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Tran ATT, Hassan K, Tung TT, Tripathy A, Mondal A, Losic D. Graphene and metal-organic framework hybrids for high-performance sensors for lung cancer biomarker detection supported by machine learning augmentation. Nanoscale 2024. [PMID: 38644676 DOI: 10.1039/d4nr00174e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Conventional diagnostic methods for lung cancer, based on breath analysis using gas chromatography and mass spectrometry, have limitations for fast screening due to their limited availability, operational complexity, and high cost. As potential replacement, among several low-cost and portable methods, chemoresistive sensors for the detection of volatile organic compounds (VOCs) that represent biomarkers of lung cancer were explored as promising solutions, which unfortunately still face challenges. To address the key problems of these sensors, such as low sensitivity, high response time, and poor selectivity, this study presents the design of new chemoresistive sensors based on hybridised porous zeolitic imidazolate (ZIF-8) based metal-organic frameworks (MOFs) and laser-scribed graphene (LSG) structures, inspired by the architecture of the human lung. The sensing performance of the fabricated ZIF-8@LSG hybrid sensors was characterised using four dominant VOC biomarkers, including acetone, ethanol, methanol, and formaldehyde, which are identified as metabolomic signatures in lung cancer patients' exhaled breath. The results using simulated breath samples showed that the sensors exhibited excellent performance for a set of these biomarkers, including fast response (2-3 seconds), a wide detection range (0.8 ppm to 50 ppm), a low detection limit (0.8 ppm), and high selectivity, all obtained at room temperature. Intelligent machine learning (ML) recognition using the multilayer perceptron (MLP)-based classification algorithm was further employed to enhance the capability of these sensors, achieving an exceptional accuracy (approximately 96.5%) for the four targeted VOCs over the tested range (0.8-10 ppm). The developed hybridised nanomaterials, combined with the ML methodology, showcase robust identification of lung cancer biomarkers in simulated breath samples containing multiple biomarkers and a promising solution for their further improvements toward practical applications.
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Affiliation(s)
- Anh Tuan Trong Tran
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, Australia.
| | - Kamrul Hassan
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, Australia.
| | - Tran Thanh Tung
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, Australia.
| | - Ashis Tripathy
- School of Electronics Engineering (SENSE), Vellore Institute of Technology, Vandalur-Kelambakkam Road, Chennai 600127, India
| | - Ashok Mondal
- School of Electronics Engineering (SENSE), Vellore Institute of Technology, Vandalur-Kelambakkam Road, Chennai 600127, India
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia, Australia.
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2
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Xu L, Wu C, Lay Yap P, Losic D, Zhu J, Yang Y, Qiao S, Ma L, Zhang Y, Wang H. Recent advances of silk fibroin materials: From molecular modification and matrix enhancement to possible encapsulation-related functional food applications. Food Chem 2024; 438:137964. [PMID: 37976879 DOI: 10.1016/j.foodchem.2023.137964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 11/07/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
Silk fibroin materials are emergingly explored for food applications due to their inherent properties including safe oral consumption, biocompatibility, gelatinization, antioxidant performance, and mechanical properties. However, silk fibroin possesses drawbacks like brittleness owing to its inherent specific composition and structure, which limit their applications in this field. This review discusses current progress about molecular modification methods on silk fibroin such as extraction, blending, self-assembly, enzymatic catalysis, etc., to address these limitations and improve their physical/chemical properties. It also summarizes matrix enhancement strategies including freeze drying, spray drying, electrospinning/electrospraying, microfluidic spinning/wheel spinning, desolvation and supercritical fluid, to generate nano-, submicron-, micron-, or bulk-scale materials. It finally highlights the food applications of silk fibroin materials, including nutraceutical improvement, emulsions, enzyme immobilization and 3D/4D printing. This review also provides insights on potential opportunities (like safe modification, toxicity risk evaluation, and digestion conditions) and possibilities (like digital additive manufacturing) in functional food industry.
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Affiliation(s)
- Liang Xu
- College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, PR China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, PR China; Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 400715, PR China
| | - Chaoyang Wu
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Pei Lay Yap
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Juncheng Zhu
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Yuxin Yang
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Shihao Qiao
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Liang Ma
- College of Food Science, Southwest University, Chongqing 400715, PR China
| | - Yuhao Zhang
- College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, PR China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, PR China; Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 400715, PR China.
| | - Hongxia Wang
- College of Food Science, Southwest University, Chongqing 400715, PR China; Chongqing Key Laboratory of Specialty Food Co-Built by Sichuan and Chongqing, Chongqing 400715, PR China; Key Laboratory of Quality and Safety Control of Citrus Fruits, Ministry of Agriculture and Rural Affairs, Southwest University, Chongqing 400712, PR China; Key Laboratory of Luminescence Analysis and Molecular Sensing (Southwest University), Ministry of Education, Chongqing 400715, PR China; Key Laboratory of Condiment Supervision Technology for State Market Regulation, Chongqing 400715, PR China.
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Chen T, Liu J, Losic D, Wang J, Zhang H. Ionic Liquid Boosting the Electrochemical Stability of a Poly(1,3-dioxolane) Gel Electrolyte for High-voltage Solid-State Lithium Batteries. ChemSusChem 2024; 17:e202301242. [PMID: 37897222 DOI: 10.1002/cssc.202301242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/28/2023] [Accepted: 10/27/2023] [Indexed: 10/29/2023]
Abstract
Poor interfacial contact between solid-state electrolytes and electrodes limits high-voltage performance of solid-state lithium batteries. A new gel electrolyte is proposed via in-situ polymerization, incorporating fluoroethylene carbonate (FEC) solvent and ionic liquid1-butyl-1-methylpiperidinium bis(trifluoromethylsulfonyl)imide (PP14 TFSI). This combination synergistically enhances Li ion transport, achieving a transfer number of 0.58 and improved electrochemical performance. FEC protects the Al current collectors from LiPF6 corrosion and promotes a protective interfacial layer formation. PP14 TFSI improves interfacial contact and provides stable components. An interface layer of fluorine and nitrogen composites forms, preventing side reactions. LiCoO2 ||PPE||Li cell exhibits robust cycling stability at 4.45 V, retaining ~80 % capacity after 200 cycles at room temperature with 0.2 C and 1 C rates, showing increased coulombic efficiency. NCM811||PPE||Li cell also displays exceptional cycling. In-situ polymerization and FEC-ionic liquid coordination enable high-voltage solid-state lithium metal batteries for practical use.
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Affiliation(s)
- Tianhua Chen
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA-5005, Australia
- Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, P. R. China
| | - Jiaxin Liu
- Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, P. R. China
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, P. R. China
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA-5005, Australia
| | - Jian Wang
- Helmholtz Institute Ulm (HIU), 89081, Ulm, Germany
| | - Haitao Zhang
- Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, P. R. China
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Liu L, Wang Z, Yap PL, Zhang Q, Ni Y, Losic D. Inhibition of α-glucosidase activity by curcumin loaded on ZnO@rGO nanocarrier for potential treatment of diabetes mellitus. LUMINESCENCE 2024; 39:e4668. [PMID: 38286596 DOI: 10.1002/bio.4668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 10/15/2023] [Accepted: 11/22/2023] [Indexed: 01/31/2024]
Abstract
Curcumin (Cur) is an acidic polyphenol with some effects on α-glucosidase (α-Glu), but Cur has disadvantages such as being a weak target, lacking passing the blood-brain barrier and having low bioavailability. To enhance the curative effect of Cur, the hybrid composed of ZnO nanoparticles decorated on rGO was used to load Cur (ZnO@rGO-Cur). The use of the multispectral method and enzyme inhibition kinetics analysis certify the inhibitory effect and interaction mechanism of ZnO@rGO-Cur with α-Glu. The static quenching of α-Glu with both Cur and ZnO@rGO-Cur is primarily driven by hydrogen bond and van der Waals interactions. The conformation-changing ability by binding to the neighbouring phenolic hydroxyl group of Cur increased their ability to alter the secondary structure of α-Glu, resulting in the inhibition of enzyme activity. The inhibition constant (Ki, Cur > Kis,ZnO@rGO-Cur ) showed that the inhibition effect of ZnO@rGO-Cur on α-Glu was larger than that of Cur. The CCK-8 experiments proved that ZnO@rGO nanocomposites have good biocompatibility. These results suggest that the therapeutic potential of ZnO@rGO-Cur composite is an emerging nanocarrier platform for drug delivery systems for the potential treatment of diabetes mellitus.
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Affiliation(s)
- Linghong Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
| | - Zhu Wang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, Australia
| | - Qiulan Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
| | - Yongnian Ni
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, China
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, Australia
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5
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Wei Y, Yuan P, Zhou J, Liu J, Losic D, Wu H, Bu H, Tan X, Li Z. Direct Atomic-Scale Insight into the Precipitation Formation at the Lanthanum Hydroxide Nanoparticle/Solution Interface. J Phys Chem Lett 2023; 14:3995-4003. [PMID: 37083499 DOI: 10.1021/acs.jpclett.3c00336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Understanding precipitation formation at lanthanum hydroxide (La(OH)3) nanoparticle-solution interfaces plays a crucial role in catalysis, adsorption, and electrochemical energy storage applications. Liquid-phase transmission electron microscopy enables powerful visualization with high resolution. However, direct atomic-scale imaging of the interfacial metal (hydro)oxide nanostructure in solutions has been a major challenge due to their beam-driven dissolution. Combining focused ion beam and aberration-corrected high-angle annular dark-field scanning transmission electron microscopy, we present an atomic-scale study of precipitation formation at La(OH)3 nanoparticle interfaces after reaction with phosphate. The structure transformation is observed to occur at high- and low-crystalline La(OH)3 nanoparticle surfaces. Low-crystalline La(OH)3 mostly transformed and high-crystalline ones partly converted to LaPO4 precipitations on the outer surface. The long-term structure evolution shows the low transformation of high-crystalline La(OH)3 nanoparticles to LaPO4 precipitation. Because precipitation at solid-solution interfaces is common in nature and industry, these results could provide valuable references for their atomic-scale observation.
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Affiliation(s)
- Yanfu Wei
- National Observation and Research Station of Coastal Ecological Environments in Macao, Macao Environmental Research Institute, Macau University of Science and Technology, Taipa, Macao 999078, China
| | - Peng Yuan
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Junming Zhou
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Jing Liu
- State Key Laboratory of Lunar and Planetary Sciences, Macau University of Science and Technology, Macau 999078, China
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Honghai Wu
- School of Environment, South China Normal University, Guangzhou 510006, China
| | - Hongling Bu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xinjie Tan
- School of Environment, South China Normal University, Guangzhou 510006, China
| | - Zheng Li
- School of Environment, South China Normal University, Guangzhou 510006, China
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Yu L, Yap PL, Santos AM, Tran DN, Losic D. Lightweight polyester fabric with elastomeric bismuth titanate composite for high-performing lead-free X-ray shielding. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2022.110726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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7
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Martins de Sousa K, Linklater DP, Murdoch BJ, Al Kobaisi M, Crawford RJ, Judge R, Dashper S, Sloan AJ, Losic D, Ivanova EP. Modulation of MG-63 Osteogenic Response on Mechano-Bactericidal Micronanostructured Titanium Surfaces. ACS Appl Bio Mater 2023; 6:1054-1070. [PMID: 36880728 DOI: 10.1021/acsabm.2c00952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Despite recent advances in the development of orthopedic devices, implant-related failures that occur as a result of poor osseointegration and nosocomial infection are frequent. In this study, we developed a multiscale titanium (Ti) surface topography that promotes both osteogenic and mechano-bactericidal activity using a simple two-step fabrication approach. The response of MG-63 osteoblast-like cells and antibacterial activity toward Pseudomonas aeruginosa and Staphylococcus aureus bacteria was compared for two distinct micronanoarchitectures of differing surface roughness created by acid etching, using either hydrochloric acid (HCl) or sulfuric acid (H2SO4), followed by hydrothermal treatment, henceforth referred to as either MN-HCl or MN-H2SO4. The MN-HCl surfaces were characterized by an average surface microroughness (Sa) of 0.8 ± 0.1 μm covered by blade-like nanosheets of 10 ± 2.1 nm thickness, whereas the MN-H2SO4 surfaces exhibited a greater Sa value of 5.8 ± 0.6 μm, with a network of nanosheets of 20 ± 2.6 nm thickness. Both micronanostructured surfaces promoted enhanced MG-63 attachment and differentiation; however, cell proliferation was only significantly increased on MN-HCl surfaces. In addition, the MN-HCl surface exhibited increased levels of bactericidal activity, with only 0.6% of the P. aeruginosa cells and approximately 5% S. aureus cells remaining viable after 24 h when compared to control surfaces. Thus, we propose the modulation of surface roughness and architecture on the micro- and nanoscale to achieve efficient manipulation of osteogenic cell response combined with mechanical antibacterial activity. The outcomes of this study provide significant insight into the further development of advanced multifunctional orthopedic implant surfaces.
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Affiliation(s)
| | - Denver P Linklater
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
- Department of Biomedical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Billy J Murdoch
- RMIT Microscopy and Microanalysis Facility, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
| | - Mohammad Al Kobaisi
- School of Engineering, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
| | - Russell J Crawford
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
| | - Roy Judge
- Melbourne Dental School, Faculty of Medicine, Dentistry & Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Stuart Dashper
- Melbourne Dental School, Faculty of Medicine, Dentistry & Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Alastair J Sloan
- Melbourne Dental School, Faculty of Medicine, Dentistry & Health Sciences, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Elena P Ivanova
- School of Science, STEM College, RMIT University, Melbourne, Victoria 3000, Australia
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Yap PL, Farivar F, Jämting ÅK, Coleman VA, Gnaniah S, Mansfield E, Pu C, Landi SM, David MV, Flahaut E, Aizane M, Barnes M, Gallerneault M, Locatelli MD, Jacquinot S, Slough CG, Menzel J, Schmölzer S, Ren L, Pollard AJ, Losic D. International Interlaboratory Comparison of Thermogravimetric Analysis of Graphene-Related Two-Dimensional Materials. Anal Chem 2023; 95:5176-5186. [PMID: 36917706 DOI: 10.1021/acs.analchem.2c03575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Research on graphene-related two-dimensional (2D) materials (GR2Ms) in recent years is strongly moving from academia to industrial sectors with many new developed products and devices on the market. Characterization and quality control of the GR2Ms and their properties are critical for growing industrial translation, which requires the development of appropriate and reliable analytical methods. These challenges are recognized by International Organization for Standardization (ISO 229) and International Electrotechnical Commission (IEC 113) committees to facilitate the development of these methods and standards which are currently in progress. Toward these efforts, the aim of this study was to perform an international interlaboratory comparison (ILC), conducted under Versailles Project on Advanced Materials and Standards (VAMAS) Technical Working Area (TWA) 41 "Graphene and Related 2D Materials" to evaluate the performance (reproducibility and confidence) of the thermogravimetric analysis (TGA) method as a potential new method for chemical characterization of GR2Ms. Three different types of representative and industrially manufactured GR2Ms samples, namely, pristine few-layer graphene (FLG), graphene oxide (GO), and reduced graphene oxide (rGO), were used and supplied to ILC participants to complete the study. The TGA method performance was evaluated by a series of measurements of selected parameters of the chemical and physical properties of these GR2Ms including the number of mass loss steps, thermal stability, temperature of maximum mass change rate (Tp) for each decomposition step, and the mass contents (%) of moisture, oxygen groups, carbon, and impurities (organic and non-combustible residue). TGA measurements determining these parameters were performed using the provided optimized TGA protocol on the same GR2Ms by 12 participants across academia, industry stakeholders, and national metrology institutes. This paper presents these results with corresponding statistical analysis showing low standard deviation and statistical conformity across all participants that confirm that the TGA method can be satisfactorily used for characterization of these parameters and the chemical characterization and quality control of GR2Ms. The common measurement uncertainty for each parameter, key contribution factors were identified with explanations and recommendations for their elimination and improvements toward their implementation for the development of the ISO/IEC standard for chemical characterization of GR2Ms.
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Affiliation(s)
- Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Farzaneh Farivar
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Åsa K Jämting
- National Measurement Institute Australia (NMIA), Lindfield, Sydney, NSW 2070, Australia
| | - Victoria A Coleman
- National Measurement Institute Australia (NMIA), Lindfield, Sydney, NSW 2070, Australia
| | - Sam Gnaniah
- National Physical Laboratory, Hampton Road, Teddington TW11 0LW, U.K
| | - Elisabeth Mansfield
- National Institute of Standards and Technology (NIST), Boulder, Colorado 80305, United States
| | - Cheng Pu
- National Institute of Metrology, Chaoyang District, Beijing 100029, China
| | - Sandra Marcela Landi
- National Institute of Metrology, Quality and Technology (INMETRO), Sao Paolo, RJ CEP: 25250-020, Brazil
| | - Marcus Vinícius David
- National Institute of Metrology, Quality and Technology (INMETRO), Sao Paolo, RJ CEP: 25250-020, Brazil
| | - Emmanuel Flahaut
- CIRIMAT, CNRS-INP-UPS, Université Toulouse 3 Paul Sabatier, 118 route de Narbonne, Toulouse cedex 9 F-31062, France
| | - Mohammed Aizane
- CIRIMAT, CNRS-INP-UPS, Université Toulouse 3 Paul Sabatier, 118 route de Narbonne, Toulouse cedex 9 F-31062, France
| | - Michael Barnes
- National Research Council of Canada (NRC-CNRC), Ottawa, Ontario K1A 0R6, Canada
| | - Mary Gallerneault
- National Research Council of Canada (NRC-CNRC), Ottawa, Ontario K1A 0R6, Canada
| | | | | | | | | | | | - Lingling Ren
- National Institute of Metrology, Chaoyang District, Beijing 100029, China
| | - Andrew J Pollard
- National Physical Laboratory, Hampton Road, Teddington TW11 0LW, U.K
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
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Sagadevan S, Rahman MZ, Léonard E, Losic D, Hessel V. Sensor to Electronics Applications of Graphene Oxide through AZO Grafting. Nanomaterials (Basel) 2023; 13:846. [PMID: 36903724 PMCID: PMC10005793 DOI: 10.3390/nano13050846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 02/18/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Graphene is a two-dimensional (2D) material with a single atomic crystal structure of carbon that has the potential to create next-generation devices for photonic, optoelectronic, thermoelectric, sensing, wearable electronics, etc., owing to its excellent electron mobility, large surface-to-volume ratio, adjustable optics, and high mechanical strength. In contrast, owing to their light-induced conformations, fast response, photochemical stability, and surface-relief structures, azobenzene (AZO) polymers have been used as temperature sensors and photo-switchable molecules and are recognized as excellent candidates for a new generation of light-controllable molecular electronics. They can withstand trans-cis isomerization by conducting light irradiation or heating but have poor photon lifetime and energy density and are prone to agglomeration even at mild doping levels, reducing their optical sensitivity. Graphene derivatives, including graphene oxide (GO) and reduced graphene oxide (RGO), are an excellent platform that, combined with AZO-based polymers, could generate a new type of hybrid structure with interesting properties of ordered molecules. AZO derivatives may modify the energy density, optical responsiveness, and photon storage capacity, potentially preventing aggregation and strengthening the AZO complexes. They are potential candidates for sensors, photocatalysts, photodetectors, photocurrent switching, and other optical applications. This review aimed to provide an overview of the recent progress in graphene-related 2D materials (Gr2MS) and AZO polymer AZO-GO/RGO hybrid structures and their synthesis and applications. The review concludes with remarks based on the findings of this study.
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Affiliation(s)
- Suresh Sagadevan
- Nanotechnology & Catalysis Research Centre, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Md Zillur Rahman
- Department of Mechanical Engineering, Ahsanullah University of Science and Technology, Dhaka 1208, Bangladesh
| | - Estelle Léonard
- Research Center Royallieu, TIMR (Integrated Transformations of Renewable Matter), ESCOM, University de Technologie de Compiegne, CS 60 319, CEDEX, 60 203 Compiegne, France
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
- The ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Volker Hessel
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
- School of Engineering, University of Warwick, Library Rd, Coventry CV4 7AL, UK
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10
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Li M, Liu D, Wang S, Guo H, Losic D, Deng L, Wu S, Yuan P. Efficient removal of Cd 2+ by diatom frustules self-modified in situ with intercellular organic components. Environ Pollut 2023; 319:121005. [PMID: 36608731 DOI: 10.1016/j.envpol.2023.121005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/28/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
The organic modification of three-dimensional porous diatom frustules (biosilica) and their fossils (diatomite) is promising in heavy metal adsorption. However, the preparation of such materials involves complex processes, high costs, and environmental hazards. In this study, organic-biosilica composites based on in situ self-modification of diatoms were prepared by freeze-drying pretreatment. Freeze-drying resulted in the release of the intercellular organic components of diatoms, followed by loading on the surface of their diatom frustules. The bio-adsorbent exhibits outstanding Cd2+ adsorption capacity (up to 220.3 mg/g). The adsorption isotherms fitted the Langmuir model and the maximum adsorption capacity was 4 times greater than that of diatom biosilica (54.1 mg/g). The adsorption kinetics of Cd2+ was adequately described by a pseudo-second-order model and reached equilibrium within 30 min. By combining focused ion beam thinning with transmission electron microscopy-energy dispersive X-ray spectroscopy, the internal structure of the composite and the Cd2+ distribution were investigated. The results showed that the organic matter of the composite adsorbed approximately 10 times more Cd2+ than inorganic biosilica. The adsorption mechanism was dominated by complexation between the abundant organic functional groups (amide, carboxyl, and amino groups) on the surfaces of composite and Cd2+. The bio-adsorbent was demonstrated to have wide applicability in the presence of competitive cations (Na+, K+, Ca2+, and Mg2+) and under a wide range of pH (3-10) conditions. Thus, the self-modification of diatoms offers a promising organic-inorganic composite for heavy metal remediation.
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Affiliation(s)
- Mengyuan Li
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Dong Liu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; State Key Laboratory of Marine Environmental Science (MEL), Xiamen University, Xiamen, 361012, China.
| | - Shun Wang
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; Neutron Science Platform, Songshan Lake Materials Laboratory, Dongguan, 523808, China
| | - Haozhe Guo
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Liangliang Deng
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Shijun Wu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China
| | - Peng Yuan
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou, 510640, China; School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, 510006, China
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11
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Yu L, Adamson P, Lay Yap P, Tung T, Makar S, Turra M, Higgins G, Losic D. From Biowaste to Lab-Bench: Low-Cost Magnetic Iron Oxide Nanoparticles for RNA Extraction and SARS-CoV-2 Diagnostics. Biosensors (Basel) 2023; 13:196. [PMID: 36831962 PMCID: PMC9953475 DOI: 10.3390/bios13020196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/12/2023] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
The gold standard for diagnostics of SARS-CoV-2 (COVID-19) virus is based on real-time polymerase chain reaction (RT-PCR) using centralized PCR facilities and commercial viral RNA extraction kits. One of the key components of these kits are magnetic beads composed of silica coated magnetic iron oxide (Fe2O3 or Fe3O4) nanoparticles, needed for the selective extraction of RNA. At the beginning of the pandemic in 2019, due to a high demand across the world there were severe shortages of many reagents and consumables, including these magnetic beads required for testing for SARS-CoV-2. Laboratories needed to source these products elsewhere, preferably at a comparable or lower cost. Here, we describe the development of a simple, low-cost and scalable preparation of magnetic nanoparticles (MNPs) from biowaste and demonstrate their successful application in viral RNA extraction and the detection of COVID-19. These MNPs have a unique nanoplatelet shape with a high surface area, which are beneficial features, expected to provide improved RNA adsorption, better dispersion and processing ability compared with commercial spherical magnetic beads. Their performance in COVID-19 RNA extraction was evaluated in comparison with commercial magnetic beads and the results presented here showed comparable results for high throughput PCR analysis. The presented magnetic nanoplatelets generated from biomass waste are safe, low-cost, simple to produce in large scale and could provide a significantly reduced cost of nucleic acid extraction for SARS-CoV-2 and other DNA and RNA viruses.
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Affiliation(s)
- Le Yu
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | | | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Tran Tung
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Shaheer Makar
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
- Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Mark Turra
- SA Pathology, Adelaide, SA 5000, Australia
| | | | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
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12
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Pham QN, Winter M, Milanova V, Young C, Condina MR, Hoffmann P, Pham NTH, Tung TT, Losic D, Thierry B. Magnetic enrichment of immuno-specific extracellular vesicles for mass spectrometry using biofilm-derived iron oxide nanowires. Nanoscale 2023; 15:1236-1247. [PMID: 36541661 DOI: 10.1039/d2nr05619d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Immuno-specific enrichment of extracellular vesicles (EVs) can provide important information into cellular pathways underpinning various pathologies and for non-invasive diagnostics, including mass spectrometry-based analyses. Herein, we report an optimised protocol for immuno-magnetic enrichment of specific EV subtypes and their subsequent processing with liquid chromatography-tandem mass spectrometry (LC-MS/MS). Specifically, we conjugated placental alkaline phosphatase (PLAP) antibodies to magnetic iron oxide nanowires (NWs) derived from bacterial biofilms and demonstrated the utility of this approach by enriching placenta-specific EVs (containing PLAP) from cell culture media. We demonstrate efficient PLAP+ve EV enrichment for both NW-PLAP and Dynabeads™-PLAP, with high PLAP protein recovery (83.7 ± 8.9% and 83.2 ± 5.9%, respectively), high particle-to-protein ratio (7.5 ± 0.7 × 109 and 7.1 ± 1.2 × 109, respectively), and low non-specific binding of non-target EVs (7 ± 3.2% and 5.4 ± 2.2%, respectively). Furthermore, our optimized EV enrichment and processing approach identified 2518 and 2545 protein groups with LC-MS/MS for NW-PLAP and Dynabead™-PLAP, respectively, with excellent reproducibility (Pearson correlation 0.986 and 0.988). These findings demonstrate that naturally occurring iron oxide NWs have comparable performance to current gold standard immune-magnetic beads. The optimized immuno-specific EV enrichment for LC-MS/MS method provides a low-cost and highly-scalable yet efficient, high-throughput approach for quality EV proteomic studies.
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Affiliation(s)
- Quang Nghia Pham
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Marnie Winter
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Valentina Milanova
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Clifford Young
- Clinical and Health Sciences, University of South Australia, City West Campus, Adelaide, South Australia 5000, Australia
| | - Mark R Condina
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
| | - Peter Hoffmann
- Clinical and Health Sciences, University of South Australia, City West Campus, Adelaide, South Australia 5000, Australia
| | - Nguyen T H Pham
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Benjamin Thierry
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, Adelaide, South Australia 5095, Australia.
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13
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Tung TT, Tran MT, Pereira AL, Cordeiro CM, Nguyen DD, Tai NH, Tran VV, Hsu CC, Joshi P, Yoshimura M, Feller JF, Castro M, Hassan K, Nine MJ, Stanley N, Losic D. Graphene woven fabric-polydimethylsiloxane piezoresistive films for smart multi-stimuli responses. Colloids Surf B Biointerfaces 2023; 221:112940. [DOI: 10.1016/j.colsurfb.2022.112940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/24/2022] [Accepted: 10/13/2022] [Indexed: 11/05/2022]
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14
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Losic D, Farivar F, Yap PL, Tung TT, Nine MJ. New insights on energetic properties of graphene oxide (GO) materials and their safety and environmental risks. Sci Total Environ 2022; 848:157743. [PMID: 35931146 DOI: 10.1016/j.scitotenv.2022.157743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/22/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Abstract
Graphene oxide (GO) has been recognized as a thermally unstable and energetic material, but surprisingly its environmental and safety risks were not fully explored, defined, and regulated. In this study, systematic explosivity and flammability characterizations of commercial GO materials were conducted to evaluate the influence of key parameters such as physical forms (paste, powders, films, and aerogels), temperature, heating rate, mass, and heating environment, as well as their potential safety and environmental impacts. Results based on thermogravimetric analysis (TGA) showed that GO in paste and powder forms have lower temperature thresholds (>180-192 °C) to initiate micro-explosions compared to GO film and aerogels (> 205 °C and 213 °C) regardless of the environment (inert, air, or oxygen). The observed explosive behavior can be explained by thermal runaway reactions as a result of thermal deoxygenation and decomposition of oxygen functional groups. Flammability rating and limiting oxygen index (LOI) results confirmed that GO films are flammable materials that can spontaneously propagate flame in a low oxygen environment (~11 %). These results provided new insights about potential safety and environmental risks of GO materials, which somehow were not considered, suggesting urgent actions to improve current safety protocols for labeling, handling, transporting, and storage practices from manufacturers to the end-users.
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Affiliation(s)
- Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Farzaneh Farivar
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Md Julker Nine
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
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15
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Ishaq S, Moussa M, Kanwal F, Ayub R, Van TN, Azhar U, Losic D. One step strategy for reduced graphene oxide/cobalt-iron oxide/polypyrrole nanocomposite preparation for high performance supercapacitor electrodes. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.140883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Wei Y, Yuan P, Liu D, Liu M, Losic D, Ma X, Jiang R, Wu N, Yang F, Zhang J. Converting Chrysotile Nanotubes into Magnesium Oxide and Hydroxide Using Lanthanum Oxycarbonate Hybridization and Alkaline Treatment for Efficient Phosphate Adsorption. Inorg Chem 2022; 61:14684-14694. [PMID: 36050289 DOI: 10.1021/acs.inorgchem.2c02052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Magnesium oxide and hydroxide nanomaterials comprise a class of promising advanced functional metal nanomaterials whose use in environmental and material applications is increasing. Several strategies to synthesize these nanomaterials have been described but are unsustainable and uneconomic. This work reports on a processing strategy that turns natural magnesium-rich chrysotile into magnesium oxide and hydroxide nanoparticles via nanoparticle hybridization and an alkaline process while enabling La-based nanoparticles to coat the chrysotile nanotube surfaces. The adsorbent's resulting hybrid nanostructure had an outstanding capacity for phosphate uptake (135.2 mg P g-1) and enhanced regeneration performance. Furthermore, the adsorbent featured wide applicability with respect to the coexistence of competitive anions and a broad range of pH conditions, and its high-performance phosphate removal from sewage effluent was also demonstrated. Spectroscopic and microscopic analyses revealed the scavenging ability of phosphate by the La-based and Mg-based nanoparticles and the multiple capture mechanisms involved, including surface complexation and ion exchange. This proposed approach expands chrysotile's potential use as a magnesium-rich nanomaterial and harbors great promise for the removal of pollutants in a variety of real-world settings.
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Affiliation(s)
- Yanfu Wei
- National Observation and Research Station of Coastal Ecological Environments in Macao, Macao Environmental Research Institute, Macau University of Science and Technology, Taipa, Macao 999078, China
| | - Peng Yuan
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Dong Liu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, CAS Center for Excellence in Deep Earth Science, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Mingxian Liu
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Xiaomin Ma
- Morlion (Zhuhai) New Material & Technology Co., Ltd., Zhuhai 519031, China
| | - Ran Jiang
- The Pearl River Hydraulic Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510640, China
| | - Nanchun Wu
- Morlion (Zhuhai) New Material & Technology Co., Ltd., Zhuhai 519031, China
| | - Fang Yang
- The Pearl River Hydraulic Research Institute, Pearl River Water Resources Commission of the Ministry of Water Resources, Guangzhou 510640, China
| | - Junxiong Zhang
- Morlion (Zhuhai) New Material & Technology Co., Ltd., Zhuhai 519031, China
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17
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Tung TT, Chien NV, Van Duy N, Van Hieu N, Nine MJ, Coghlan CJ, Tran DNH, Losic D. Corrigendum to "Magnetic iron oxide nanoparticles decorated graphene for chemoresistive gas sensing: The particle size effects" [J. Colloid Interface Sci. 539 (2019) 315-325]. J Colloid Interface Sci 2022; 612:806-807. [PMID: 35031122 DOI: 10.1016/j.jcis.2021.12.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Tran Thanh Tung
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Nguyen Viet Chien
- International Training Institute for Materials Science, Hanoi University of Science and Technology, No. 1, Dai Co Viet, Hanoi, Viet Nam
| | - Nguyen Van Duy
- International Training Institute for Materials Science, Hanoi University of Science and Technology, No. 1, Dai Co Viet, Hanoi, Viet Nam
| | - Nguyen Van Hieu
- Faculty of Electrical and Electronic Engineering, Phenikaa Institute for Advanced Study (TIAS), Phenikaa University, Yen Nghia, Ha-Dong District, Hanoi 10000, Viet Nam; Phenikaa Research and Technology Institute (PRATI), A&A Green Phoenix Group, 167 Hoang Ngan, Hanoi 10000, Viet Nam.
| | - Md Julker Nine
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Campbell J Coghlan
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Diana N H Tran
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia.
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18
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Zhong X, Yuan P, Wei Y, Liu D, Losic D, Li M. Coupling Natural Halloysite Nanotubes and Bimetallic Pt-Au Alloy Nanoparticles for Highly Efficient and Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid. ACS Appl Mater Interfaces 2022; 14:3949-3960. [PMID: 35015494 DOI: 10.1021/acsami.1c18788] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The aerobic oxidation of 5-hydroxymethylfurfural (HMF), a key platform compound derived from biomass, to 2,5-furandicarboxylic acid (FDCA) is a highly important reaction in the production of green and sustainable chemicals. Here, we developed a highly efficient and stable halloysite-supported Pt-Au alloy catalyst for the selective oxidation of HMF to FDCA. The catalyst was synthesized through the organosilane functionalization of halloysite nanotubes, followed by the in situ formation and dispersion of Pt-Au alloy nanoparticles on the internal and external surfaces of nanotubes. The composition, morphology, and structure of the prepared catalyst were characterized. The catalyst with the optimal composition of Pt/Au molar ratio of 1/4 and metal loading of 1.5 wt % exhibited outstanding catalytic activity for the oxidation of HMF to FDCA using O2 as an oxidant with 100% conversion of HMF and 99% selectivity of FDCA. This excellent catalytic performance is mainly attributed to the high dispersion and alloying effects of bimetallic nanoparticles, which promoted the activation of reactants or intermediates and further improved FDCA selectivity. Furthermore, the halloysite-supported Pt/Au bimetallic catalyst showed high stability and reusability. This study provides a promising strategy by combining clay mineral halloysite and bimetallic alloys for developing efficient catalysts with high FDCA selectivity and stability for the oxidation of HMF to FDCA.
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Affiliation(s)
- Xuemin Zhong
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Yuan
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Yanfu Wei
- Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment, School of Environment, South China Normal University, Guangzhou 510006, China
| | - Dong Liu
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Mengyuan Li
- CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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19
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Maher S, Linklater D, Rastin H, Le Yap P, Ivanova EP, Losic D. Front Cover: Tailoring Additively Manufactured Titanium Implants for Short‐Time Pediatric Implantations with Enhanced Bactericidal Activity (ChemMedChem 2/2022). ChemMedChem 2022. [DOI: 10.1002/cmdc.202100781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide SA 5005 Australia
- Faculty of Pharmacy Assiut University Assiut 71526 Egypt
| | - Denver Linklater
- College of STEM School of Science RMIT University Melbourne VIC 3000 Australia
| | - Hadi Rastin
- School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide SA 5005 Australia
| | - Pei Le Yap
- School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide SA 5005 Australia
| | - Elena P. Ivanova
- College of STEM School of Science RMIT University Melbourne VIC 3000 Australia
- Australian Research Council (ARC) Training Centre in Surface Engineering for Advanced Materials (SEAM) Swinburne University of Technology Hawthorn VIC 3122 Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials The University of Adelaide Adelaide SA 5005 Australia
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20
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Maher S, Linklater D, Rastin H, Liao STY, Martins de Sousa K, Lima-Marques L, Kingshott P, Thissen H, Ivanova EP, Losic D. Advancing of 3D-Printed Titanium Implants with Combined Antibacterial Protection Using Ultrasharp Nanostructured Surface and Gallium-Releasing Agents. ACS Biomater Sci Eng 2021; 8:314-327. [PMID: 34963288 DOI: 10.1021/acsbiomaterials.1c01030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This paper presents the development of advanced Ti implants with enhanced antibacterial activity. The implants were engineered using additive manufacturing three-dimensional (3D) printing technology followed by surface modification with electrochemical anodization and hydrothermal etching, to create unique hierarchical micro/nanosurface topographies of microspheres covered with sharp nanopillars that can mechanically kill bacteria in contact with the surface. To achieve enhanced antibacterial performance, fabricated Ti implant models were loaded with gallium nitrate as an antibacterial agent. The antibacterial efficacy of the fabricated substrates with the combined action of sharp nanopillars and locally releasing gallium ions (Ga3+) was evaluated toward Staphylococcus aureus and Pseudomonas aeruginosa. Results confirm the significant antibacterial performance of Ga3+-loaded substrates with a 100% eradication of bacteria. The nanopillars significantly reduced bacterial attachment and prevented biofilm formation while also killing any bacteria remaining on the surface. Furthermore, 3D-printed surfaces with microspheres of diameter 5-30 μm and interspaces of 12-35 μm favored the attachment of osteoblast-like MG-63 cells, as confirmed via the assessment of their attachment, proliferation, and viability. This study provides important progress toward engineering of next-generation 3D-printed implants, that combine surface chemistry and structure to achieve a highly efficacious antibacterial surface with dual cytocompatibility to overcome the limitations of conventional Ti implants.
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Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Denver Linklater
- College of STEM, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Sandy Tzu-Ying Liao
- College of STEM, School of Science, RMIT University, Melbourne, VIC 3000, Australia.,Department of Chemistry and Biotechnology, School of Science, Swinburne University of Technology, Hawthorn, VIC 3022, Australia.,Australian Research Council (ARC) Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | | | - Luis Lima-Marques
- The Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Peter Kingshott
- Department of Chemistry and Biotechnology, School of Science, Swinburne University of Technology, Hawthorn, VIC 3022, Australia.,Australian Research Council (ARC) Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Helmut Thissen
- Australian Research Council (ARC) Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, VIC 3122, Australia.,CSIRO Manufacturing, Clayton, VIC 3168, Australia
| | - Elena P Ivanova
- College of STEM, School of Science, RMIT University, Melbourne, VIC 3000, Australia.,Australian Research Council (ARC) Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
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21
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Rastin H, Mansouri N, Tung TT, Hassan K, Mazinani A, Ramezanpour M, Yap PL, Yu L, Vreugde S, Losic D. Converging 2D Nanomaterials and 3D Bioprinting Technology: State‐of‐the‐Art, Challenges, and Potential Outlook in Biomedical Applications (Adv. Healthcare Mater. 22/2021). Adv Healthc Mater 2021. [DOI: 10.1002/adhm.202170107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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22
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Rastin H, Mansouri N, Tung TT, Hassan K, Mazinani A, Ramezanpour M, Yap PL, Yu L, Vreugde S, Losic D. Converging 2D Nanomaterials and 3D Bioprinting Technology: State-of-the-Art, Challenges, and Potential Outlook in Biomedical Applications. Adv Healthc Mater 2021; 10:e2101439. [PMID: 34468088 DOI: 10.1002/adhm.202101439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Indexed: 12/17/2022]
Abstract
The development of next-generation of bioinks aims to fabricate anatomical size 3D scaffold with high printability and biocompatibility. Along with the progress in 3D bioprinting, 2D nanomaterials (2D NMs) prove to be emerging frontiers in the development of advanced materials owing to their extraordinary properties. Harnessing the properties of 2D NMs in 3D bioprinting technologies can revolutionize the development of bioinks by endowing new functionalities to the current bioinks. First the main contributions of 2D NMS in 3D bioprinting technologies are categorized here into six main classes: 1) reinforcement effect, 2) delivery of bioactive molecules, 3) improved electrical conductivity, 4) enhanced tissue formation, 5) photothermal effect, 6) and stronger antibacterial properties. Next, the recent advances in the use of each certain 2D NMs (1) graphene, 2) nanosilicate, 3) black phosphorus, 4) MXene, 5) transition metal dichalcogenides, 6) hexagonal boron nitride, and 7) metal-organic frameworks) in 3D bioprinting technology are critically summarized and evaluated thoroughly. Third, the role of physicochemical properties of 2D NMSs on their cytotoxicity is uncovered, with several representative examples of each studied 2D NMs. Finally, current challenges, opportunities, and outlook for the development of nanocomposite bioinks are discussed thoroughly.
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Affiliation(s)
- Hadi Rastin
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
| | - Negar Mansouri
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- School of Electrical and Electronic Engineering The University of Adelaide South Australia 5005 Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
| | - Kamrul Hassan
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
| | - Arash Mazinani
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
| | - Mahnaz Ramezanpour
- Department of Surgery‐Otolaryngology Head and Neck Surgery The University of Adelaide Woodville South 5011 Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
| | - Le Yu
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
| | - Sarah Vreugde
- Department of Surgery‐Otolaryngology Head and Neck Surgery The University of Adelaide Woodville South 5011 Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials The University of Adelaide South Australia 5005 Australia
- ARC Research Hub for Graphene Enabled Industry Transformation The University of Adelaide South Australia 5005 Australia
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23
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Abstract
The rapid advancement of internet of things (IoT)-enabled applications along with connected automation in sensing technologies is the heart of future intelligent systems. The probable applications have significant implications, from chemical process monitoring to agriculture, mining, space, wearable electronics, industrial manufacturing, smart cities, and point-of-care (PoC) diagnostics. Advancing sensor performance such as sensitivity to detect trace amounts (ppb-ppm) of analytes (gas/VOCs), selectivity, portability, and low cost is critical for many of these applications. These advancements are mainly achieved by selecting and optimizing sensing materials by their surface functionalization and/or structural optimization to achieve favorable transport characteristics or chemical binding/reaction sites. Surprisingly, the sensor geometry, shapes, and patterns were not considered as critical parameters, and most of these sensors were designed by following simple planar and interdigitated electrode geometry. In this study, we introduce a new bioinspired fractal approach to design chemoresistive sensors with fractal geometry, which grasp the architecture of fern leaves represented by the geometric group of space-filling curves of fractal patterns. These fractal sensors were printed by an extrusion process on a flexible substrate (PET) using specially formulated graphene ink as a sensing material, which provided significant enhancement of the active surface area to volume ratio and allowed high-resolution fractal patterning along with a reduced current transportation path. To demonstrate the advantages and influence of fractal geometry on sensor performance, here, three different kinds of sensors were fabricated based on different fractal geometrics (Sierpinski, Peano, and Hilbert), and the sensing performance was explored toward different VOC analytes (e.g., ethanol, methanol, and acetone). Among all these fractal-designed sensors including interdigitate sensors, the Hilbert-designed printed sensor shows enhanced sensing properties in terms of fast response time (6 s for 30 ppm), response value (14%), enhanced detection range (5-100 ppm), high selectivity, and low interference to humidity (up to RH 80%) for ethanol at room temperature (20 °C). Moreover, a significant improvement of this sensor performance was observed by applying the mechanical deformation (positive bending) technique. The practical application of this sensor was successfully demonstrated by monitoring food spoilage using a commercial box of strawberries as a model. Based on these presented results, this biofractal biomimetic VOC sensor is demonstrated for a prospective application in food monitoring.
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Affiliation(s)
- Kamrul Hassan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Nathan Stanley
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Md. Julker Nine
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, South Australia 5005, Australia
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24
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Maher S, Linklater D, Rastin H, Le Yap P, Ivanova EP, Losic D. Tailoring Additively Manufactured Titanium Implants for Short-Time Pediatric Implantations with Enhanced Bactericidal Activity. ChemMedChem 2021; 17:e202100580. [PMID: 34606176 DOI: 10.1002/cmdc.202100580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 09/29/2021] [Indexed: 01/01/2023]
Abstract
Paediatric titanium (Ti) implants are used for the short-term fixation of fractures, after which they are removed. However, bone overgrowth on the implant surface can complicate their removal. The current Ti implants research focuses on improving their osseointegration and antibacterial properties for long-term use while overlooking the requirements of temporary implants. This paper presents the engineering of additively manufactured Ti implants with antibacterial properties and prevention of bone cell overgrowth. 3D-printed implants were fabricated followed by electrochemical anodization to generate vertically aligned titania nanotubes (TNTs) on the surface with specific diameters (∼100 nm) to reduce cell attachment and proliferation. To achieve enhanced antibacterial performance, TNTs were coated with gallium nitrate as antibacterial agent. The physicochemical characteristics of these implants assessed by the attachment, growth and viability of osteoblastic MG-63 cells showed significantly reduced cell attachment and proliferation, confirming the ability of TNTs surface to avoid cell overgrowth. Gallium coated TNTs showed strong antibacterial activity against S. aureus and P. aeruginosa with reduced bacterial attachment and high rates of bacterial death. Thus a new approach for the engineering of temporary Ti implants with enhanced bactericidal properties with reduced bone cell attachment is demonstrated as a new strategy toward a new generation of short-term implants in paediatrics.
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Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
| | - Denver Linklater
- College of STEM, School of Science, RMIT University, Melbourne, VIC 3000, Australia
| | - Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Le Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Elena P Ivanova
- College of STEM, School of Science, RMIT University, Melbourne, VIC 3000, Australia.,Australian Research Council (ARC) Training Centre in Surface Engineering for Advanced Materials (SEAM), Swinburne University of Technology, Hawthorn, VIC 3122, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
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25
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Mazinani A, Rastin H, Nine MJ, Lee J, Tikhomirova A, Tung TT, Ghomashchi R, Kidd S, Vreugde S, Losic D. Comparative antibacterial activity of 2D materials coated on porous-titania. J Mater Chem B 2021; 9:6412-6424. [PMID: 34323241 DOI: 10.1039/d1tb01122g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Plasma electrolytic oxidation (PEO) is a well-established technique for the treatment of titanium-based materials. The formed titania-PEO surface can improve the osseointegration properties of titanium implants. Nevertheless, it can not address bacterial infection problems associated with bone implants. Recently, 2-dimensional (2D) materials such as graphene oxide (GO), MXene, and hexagonal boron nitride (hBN) have received considerable attention for surface modifications showing their antibacterial properties. In this paper, a comparative study on the effect of partial deposition of these three materials over PEO titania substrates on the antibacterial efficiency and bioactivity is presented. Their partial deposition through drop-casting instead of continuous film coating is propsed to simultaneously address both antibacterial and osseointegration abilities. Our results demonstrate the dose-dependent nature of the deposited antibacterial agent on the PEO substrate. GO-PEO and MXene-PEO samples showed the highest antibacterial activity with 70 (±2) % and 97 (±0.5) % inactivation of S. aureus colonies in the low concentration group, respectively. Furthermore, only samples in the higher concentration group were effective against E. coli bacteria with 18 (±2) % and 17 (±4) % decrease in numbers of colonies for hBN-PEO and GO-PEO samples, respectively. Moreover, all antibacterial samples demonstrated acceptable bioactivity and good biocompatibility, making them a considerable candidates for the next generation of antibacterial titanium implants.
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Affiliation(s)
- Arash Mazinani
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
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26
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Losic D, Farivar F, Yap PL, Karami A. Accounting Carbonaceous Counterfeits in Graphene Materials Using the Thermogravimetric Analysis (TGA) Approach. Anal Chem 2021; 93:11859-11867. [PMID: 34319694 DOI: 10.1021/acs.analchem.1c02662] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Counterfeits in the supply chain of high-value advanced materials such as graphene and their derivatives have become a concerning problem with a potential negative impact on this growing and emerging industry. Recent studies have revealed alarming facts that a large percentage of manufactured graphene materials on market are not graphene, raising considerable concerns for the end users. The common and recommended methods for the characterization of graphene materials, such as transmission electron microscopy (TEM), atomic force microscopy (AFM), and Raman spectroscopy based on spot analysis and probing properties of individual graphene particles, are limited to provide the determination of the properties of "bulk" graphene powders at a large scale and the identification of non-graphene components or purposely included additives. These limitations are creating counterfeit opportunities by adding low-cost black carbonaceous materials into manufactured graphene powders. To address this problem, it is critical to have reliable characterization methods, which can probe the specific properties of graphene powders at bulk scale, confirm their typical graphene signature, and detect the presence of unwanted additional compounds, where the thermogravimetric analysis (TGA) method is one of the most promising methods to perform this challenging task. This paper presents the evaluation of the TGA method and its ability to detect low-cost carbon additives such as graphite, carbon black, biochar, and activated carbon as potential counterfeiting materials to graphene materials and their derivatives such as graphene oxide (GO) and reduced GO. The superior performance of the TGA method is demonstrated here, showing its excellent capability to successfully detect these additives when mixed with graphene materials, which is not possible by two other comparative methods (Raman spectroscopy and powder X-ray diffraction (XRD)), which are used as the common characterization methods for graphene materials.
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Affiliation(s)
- Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Farzaneh Farivar
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.,ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Afshin Karami
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
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27
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Mansouri N, Al-Sarawi S, Losic D, Mazumdar J, Clark J, Gronthos S, O'Hare Doig R. Biodegradable and biocompatible graphene-based scaffolds for functional neural tissue engineering: A strategy approach using dental pulp stem cells and biomaterials. Biotechnol Bioeng 2021; 118:4217-4230. [PMID: 34264518 DOI: 10.1002/bit.27891] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 12/15/2022]
Abstract
Neural tissue engineering aims to restore the function of nervous system tissues using biocompatible cell-seeded scaffolds. Graphene-based scaffolds combined with stem cells deserve special attention to enhance tissue regeneration in a controlled manner. However, it is believed that minor changes in scaffold biomaterial composition, internal porous structure, and physicochemical properties can impact cellular growth and adhesion. The current work aims to investigate in vitro biological effects of three-dimensional (3D) graphene oxide (GO)/sodium alginate (GOSA) and reduced GOSA (RGOSA) scaffolds on dental pulp stem cells (DPSCs) in terms of cell viability and cytotoxicity. Herein, the effects of the 3D scaffolds, coating conditions, and serum supplementation on DPSCs functions are explored extensively. Biodegradation analysis revealed that the addition of GO enhanced the degradation rate of composite scaffolds. Compared to the 2D surface, the cell viability of 3D scaffolds was higher (p < 0.0001), highlighting the optimal initial cell adhesion to the scaffold surface and cell migration through pores. Moreover, the cytotoxicity study indicated that the incorporation of graphene supported higher DPSCs viability. It is also shown that when the mean pore size of the scaffold increases, DPSCs activity decreases. In terms of coating conditions, poly- l-lysine was the most robust coating reagent that improved cell-scaffold adherence and DPSCs metabolism activity. The cytotoxicity of GO-based scaffolds showed that DPSCs can be seeded in serum-free media without cytotoxic effects. This is critical for human translation as cellular transplants are typically serum-free. These findings suggest that proposed 3D GO-based scaffolds have favorable effects on the biological responses of DPSCs.
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Affiliation(s)
- Negar Mansouri
- School of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, Australia.,ARC Research Hub for Graphene-Enabled Industry Transformation, The University of Adelaide, Adelaide, Australia
| | - Said Al-Sarawi
- School of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, Australia
| | - Dusan Losic
- ARC Research Hub for Graphene-Enabled Industry Transformation, The University of Adelaide, Adelaide, Australia.,School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, Australia
| | - Jagan Mazumdar
- School of Electrical and Electronic Engineering, The University of Adelaide, Adelaide, Australia
| | - Jillian Clark
- Centre for Orthopaedics and Trauma Research, Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia.,South Australian Spinal Cord Injury Research Centre, Hampstead Rehabilitation Centre, Lightsview, Adelaide, Australia
| | - Stan Gronthos
- Mesenchymal Stem Cell Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia.,Precision Medicine Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Ryan O'Hare Doig
- Neil Sachse Centre for Spinal Cord Research, Lifelong Health Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Adelaide Medical School, Faculty of Health and Medical Sciences, The University of Adelaide, Adelaide, Australia
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28
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Yu L, Yap PL, Tran DNH, Santos AMC, Losic D. High-yield preparation of edge-functionalized and water dispersible few-layers of hexagonal boron nitride (hBN) by direct wet chemical exfoliation. Nanotechnology 2021; 32:405601. [PMID: 34102628 DOI: 10.1088/1361-6528/ac0931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/08/2021] [Indexed: 06/12/2023]
Abstract
Owing to many fascinating properties including high thermal and chemical stability, excellent electrical insulation, fire-retardant and antibacterial properties, hexagonal boron nitride (hBN) has emerged as a prominent 2D material for broad applications. However, the production of high quality of hBN by chemical exfoliation from its precursor is still challenging. This paper presents a high-yield (+83%), low-cost and energy-efficient wet chemical exfoliation strategy, which produces few-layers (FL, 3-6 layers) of edge-functionalized (OH) hBN nanosheets with uniform size (486 ± 51 nm). This optimized preparation is established based on a comprehensive investigation on the key exfoliation parameters such as exfoliation temperature, time and amount of the oxidant (potassium permanganate). High quality of FL-hBN was confirmed by various characterization techniques including scanning electron microscopy coupled with energy dispersive X-ray, transmission electron microscopy, Raman, Fourier transform infrared spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy analyses. The outcome of this study paves a promising pathway to effectively produce hBN through a cost-efficient exfoliation approach, which has a significant impact on industrial applications.
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Affiliation(s)
- Le Yu
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Diana N H Tran
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Alexandre M C Santos
- School of Physical Sciences, The University of Adelaide, Adelaide, South Australia 5005, Australia
- Department of Medical Physics, Royal Adelaide Hospital, Adelaide, South Australia 5000, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
- ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
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29
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Farivar F, Lay Yap P, Tung TT, Losic D. Highly Water Dispersible Functionalized Graphene by Thermal Thiol-Ene Click Chemistry. Materials (Basel) 2021; 14:ma14112830. [PMID: 34070648 PMCID: PMC8198566 DOI: 10.3390/ma14112830] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/20/2021] [Accepted: 05/24/2021] [Indexed: 11/29/2022]
Abstract
Functionalization of pristine graphene to achieve high water dispersibility remains as a key obstacle owing to the high hydrophobicity and absence of reactive functional groups on the graphene surface. Herein, a green and simple modification approach to prepare highly dispersible functionalized graphene via thermal thiol-ene click reaction was successfully demonstrated on pristine graphene. Specific chemical functionalities (–COO, –NH2 and –S) on the thiol precursor (L-cysteine ethyl ester) were clicked directly on the sp2 carbon of graphene framework with grafting density of 1 unit L-cysteine per 113 carbon atoms on graphene. This functionalized graphene was confirmed with high atomic content of S (4.79 at % S) as well as the presence of C–S–C and N–H species on the L-cysteine functionalized graphene (FG-CYS). Raman spectroscopy evidently corroborated the modification of graphene to FG-CYS with an increased intensity ratio of D and G band, ID/IG ratio (0.3 to 0.7), full-width at half-maximum of G band, FWHM [G] (20.3 to 35.5) and FWHM [2D] (64.8 to 90.1). The use of ethanol as the reaction solvent instead of common organic solvents minimizes the chemical hazards exposure to humans and the environment. This direct attachment of multifunctional groups on the surface of pristine graphene is highly demanded for graphene ink formulations, coatings, adsorbents, sensors and supercapacitor applications.
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Affiliation(s)
- Farzaneh Farivar
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; (F.F.); (P.L.Y.); (T.T.T.)
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; (F.F.); (P.L.Y.); (T.T.T.)
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; (F.F.); (P.L.Y.); (T.T.T.)
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia; (F.F.); (P.L.Y.); (T.T.T.)
- ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
- Correspondence:
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30
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Abstract
Introduction:Titanium (Ti) and their alloys are used as main implant materials in orthopedics and dentistry for decades having superior mechanical properties, chemical stability and biocompatibility. Their rejections due lack of biointegration and bacterial infection are concerning with considerable healthcare costs and impacts on patients. To address these limitations, conventional Ti implants need improvements where the use of surface nanoengineering approaches and the development of a new generation of implants are recognized as promising strategies.Areas covered:This review presents an overview of recent progress on the application of surface engineering methods to advance Ti implants enable to address their key limitations. Several promising surface engineering strategies are presented and critically discussed to generate advanced surface properties and nano-topographies (tubular, porous, pillars) able not only to improve their biointegration, antibacterial performances, but also to provide multiple functions such as drug delivery, therapy, sensing, communication and health monitoring underpinning the development of new generation and smart medical implants.Expert opinion:Recent advances in cell biology, materials science, nanotechnology and additive manufacturing has progressively influencing improvements of conventional Ti implants toward the development of the next generation of implants with improved performances and multifunctionality. Current research and development are in early stage, but progressing with promising results and examples of moving into in-vivo studies an translation into real applications.
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Affiliation(s)
- Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Engineering North Building, Adelaide, SA, Australia.,ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Engineering North Building, Adelaide, SA, Australia
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31
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Bhat MP, Kurkuri M, Losic D, Kigga M, Altalhi T. New optofluidic based lab-on-a-chip device for the real-time fluoride analysis. Anal Chim Acta 2021; 1159:338439. [PMID: 33867030 DOI: 10.1016/j.aca.2021.338439] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 03/02/2021] [Accepted: 03/18/2021] [Indexed: 10/21/2022]
Abstract
A PDMS (Polydimethylsiloxane) microfluidic channel coupled with UV-vis fibre-optic spectrometer and new synthesized colorimetric probe was integrated into an optofluidic based Lab-on-a-chip device for highly sensitive and real-time quantitative measurements of fluoride ions (F¯). An 'S' shaped microchannel in a microfluidic device was designed to act as microreactor to facilitate the continuous reaction between synthetized colorimetric probe (sensor) and F¯ ions. Following this reaction, the UV-vis optical probe in the downstream detection zone of the microfluidic device was used to capture their spectrum and present as F¯ concentration in real-time conditions. An initial study of the developed colorimetric probe with multi-colour change with several binding and chromophore groups such as -OH, -NH and -NO2 groups confirmed its high sensitivity and selectivity for F¯ ions with a detection limit of 0.79 ppm. The performance of the developed optofluidic device was evaluated for the selective, sensitive detection of F¯ ions including real samples out-performing conventional methods. The technology has advantages such as low sample consumption, rapid analysis, high sensitivity and portability. Presented new Lab-on-a-chip device provides many competitive advantages for the real-time analysis of F¯ ions needed across broad sectors.
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Affiliation(s)
- Mahesh P Bhat
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Mahaveer Kurkuri
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India.
| | - Dusan Losic
- School of Chemical Engineering, ARC Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA, 5005, Australia.
| | - Madhuprasad Kigga
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Bengaluru, 562112, Karnataka, India
| | - Tariq Altalhi
- Department of Chemistry, Faculty of Science, Taif University, Taif, Saudi Arabia
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32
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Zhu Z, Zhang Q, Lay Yap P, Ni Y, Losic D. Magnetic reduced graphene oxide as a nano-vehicle for loading and delivery of curcumin. Spectrochim Acta A Mol Biomol Spectrosc 2021; 252:119471. [PMID: 33524822 DOI: 10.1016/j.saa.2021.119471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/20/2020] [Accepted: 01/10/2021] [Indexed: 06/12/2023]
Abstract
Magnetic nanoparticles have been widely used in the field of nanomedicine as drug delivery vehicles for targeted imaging-guided and controlled drug uptake and release actions. In this work, the loading of curcumin on Fe3O4/rGO nanocomposites and their interaction mechanism were investigated by multispectral methods including resonance light scattering (RLS), atomic force microscopy (AFM), circular dichroism (CD) and Fourier transform infrared (FT-IR). Results revealed that the drug loading was a complex process which is not governed by a simple adsorption. The interactions of vitro human serum albumin (HSA) with free curcumin and/or curcumin-Fe3O4/rGO complex have been studied. Outcomes from the fluorescence quenching showed that the binding constant of curcumin to HSA increased significantly in the presence of Fe3O4/rGO, confirming the enhanced effect of Fe3O4/rGO besides its low toxicity towards HSA. Findings from this work verified that Fe3O4/rGO nanocomposite has a promising potential as a good drug loading carrier that can be used and broad range of therapies.
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Affiliation(s)
- Zhi Zhu
- School of Chemistry, Nanchang University, Nanchang 330031, China
| | - Qiulan Zhang
- School of Chemistry, Nanchang University, Nanchang 330031, China; Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang 330031, China; State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha 410082, China.
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Yongnian Ni
- School of Chemistry, Nanchang University, Nanchang 330031, China
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
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33
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Rastin H, Ramezanpour M, Hassan K, Mazinani A, Tung TT, Vreugde S, Losic D. 3D bioprinting of a cell-laden antibacterial polysaccharide hydrogel composite. Carbohydr Polym 2021; 264:117989. [PMID: 33910727 DOI: 10.1016/j.carbpol.2021.117989] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/22/2021] [Accepted: 03/23/2021] [Indexed: 12/17/2022]
Abstract
Bioink with inherent antibacterial activity is of particular interest for tissue engineering application due to the growing number of bacterial infections associated with impaired wound healing or bone implants. However, the development of cell-laden bioink with potent antibacterial activity while supporting tissue regeneration proved to be challenging. Here, we introduced a cell-laden antibacterial bioink based on Methylcellulose/Alginate (MC/Alg) hydrogel for skin tissue engineering via elimination of the risks associated with a bacterial infection. The key feature of the bioink is the use of gallium (Ga+3) in the design of bioink formulation with dual functions. First, Ga+3 stabilized the hydrogel bioink by the formation of ionic crosslinking with Alg chains. Second, the gallium-crosslinked bioink exhibited potent antibacterial activity toward both Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa) bacteria with a bactericidal rate of 99.99 %. In addition, it was found that the developed bioink supported encapsulated fibroblast cellular functions.
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Affiliation(s)
- Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, South Australia, 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, South Australia, 5005, Australia
| | - Mahnaz Ramezanpour
- Department of Surgery-Otolaryngology Head and Neck Surgery, The University of Adelaide, Woodville South, Australia
| | - Kamrul Hassan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, South Australia, 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, South Australia, 5005, Australia
| | - Arash Mazinani
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, South Australia, 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, South Australia, 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, South Australia, 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, South Australia, 5005, Australia
| | - Sarah Vreugde
- Department of Surgery-Otolaryngology Head and Neck Surgery, The University of Adelaide, Woodville South, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, South Australia, 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, South Australia, 5005, Australia.
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Thanh Tung T, Chen SJ, Fumeaux C, Kim T, Losic D. N-doped reduced graphene oxide-PEDOT nanocomposites for implementation of a flexible wideband antenna for wearable wireless communication applications. Nanotechnology 2021; 32:245711. [PMID: 33690186 DOI: 10.1088/1361-6528/abed04] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 03/09/2021] [Indexed: 06/12/2023]
Abstract
We report a flexible and highly efficient wideband slot antenna based on a highly conductive composite of poly(3,4-ethylenedioxythiophene) (PEDOT) and N-doped reduced graphene oxide (N-doped rGO) for wearable applications. The high conductivity of this hybrid material with low sheet resistance of 0.56 Ω/square, substantial thickness of 55μm, and excellent mechanical resilience (<5.5% resistance change after 1000 bending cycles) confirmed this composite to be a suitable antenna conductor. The antenna achieved an estimated conduction efficiency close to 80% over a bandwidth from 3 to 8 GHz. Moreover, the successful operation of a realized antenna prototype has been demonstrated in free space and as part of a wearable camera system. The read range of the system was measured to be 271.2 m, which is 23 m longer than that of the original monopole antennas provided by the supplier. The synergistic effects between the dual conjugated structures of N-doped rGO and PEDOT in a single composite with fine distribution and interfacial interactions are critical to the demonstrated material performance. The N-doped rGO sheet reinforces the mechanical stability whereas the PEDOT functions as additive and/or binder, leading to an improved electrical and mechanical performance compared to that of the graphene and PEDOT alone. This high-performing nanocomposite material meets requirements for antenna design and opens the door for diverse future non-metallic flexible electronic device developments.
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Affiliation(s)
- Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia
| | - Shengjian Jammy Chen
- School of Electrical and Electronic Engineering, The University of Adelaide, Australia
| | - Christophe Fumeaux
- School of Electrical and Electronic Engineering, The University of Adelaide, Australia
| | - TaeYoung Kim
- Department of Materials Science and Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia
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Hassan K, Tung TT, Stanley N, Yap PL, Farivar F, Rastin H, Nine MJ, Losic D. Graphene ink for 3D extrusion micro printing of chemo-resistive sensing devices for volatile organic compound detection. Nanoscale 2021; 13:5356-5368. [PMID: 33660735 DOI: 10.1039/d1nr00150g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Printed electronic sensors offer a breakthrough in the availability of low-cost sensor devices for improving the quality of human life. Conductive ink is the core of printing technology and also one of the fastest growing sector among all ink industries. Among many developed conductive inks, graphene-based inks are especially recognized as very promising for future fabrication of devices due to their low cost, unique properties, and compatibility with various platforms such as plastics, textiles, and paper. The development of graphene ink formulations for achieving high conductivity and high resolution printing is highly realized in 2D inkjet printing. Unfortunately, the ongoing development of graphene inks is possibly hampered by the non-uniform particle size and structures (e.g., different shapes and number of layers), which adversely affect printing resolution, conductivity, adhesion, and structural integrity. This study presents an environmentally sustainable route to produce graphene inks specifically designed for 3D extrusion-printing. The application of the prepared ink is demonstrated by mask-free automatic patterning of sensing devices for the detection of volatile organic compounds (VOCs). The sensing devices fabricated with this new ink display high-resolution patterning (average height/thickness of ∼12 μm) and a 10-fold improvement in the surface area/volume (SA/V) ratio compared to a conventional drop casting method. The extrusion printed sensors show enhanced sensing characteristics in terms of sensitivity and selectivity towards trace amount of VOC (e.g. 5 ppm ethanol) at room temperature (20 °C), which highlights that our method has highly promising potential in graphene printing technology for sensing applications.
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Affiliation(s)
- Kamrul Hassan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Nathan Stanley
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Farzaneh Farivar
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Md Julker Nine
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
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Maher S, Wijenayaka AR, Lima-Marques L, Yang D, Atkins GJ, Losic D. Advancing of Additive-Manufactured Titanium Implants with Bioinspired Micro- to Nanotopographies. ACS Biomater Sci Eng 2021; 7:441-450. [PMID: 33492936 DOI: 10.1021/acsbiomaterials.0c01210] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
There is an increasing demand for low-cost and more efficient titanium (Ti) medical implants that will provide improved osseointegration and at the same time reduce the likelihood of infection. In the past decade, additive manufacturing (AM) using metal selective laser melting (SLM) or three-dimensional (3D) printing techniques has emerged to enable novel implant geometries or properties to overcome such potential challenges. This study presents a new surface engineering approach to create bioinspired multistructured surfaces on SLM-printed Ti alloy (Ti6Al4V) implants by combining SLM technology, electrochemical anodization, and hydrothermal (HT) processes. The resulting implants display unique surfaces with a distinctive dual micro- to nano-topography composed of micron-sized spherical features, fabricated by SLM and vertically aligned nanoscale pillar structures as a result of combining anodization and HT treatment. The fabricated implants enhanced hydroxyapatite-like mineral deposition from simulated body fluid (SBF) compared to control. In addition, normal human osteoblast-like cells (NHBCs) showed strong adhesion to the nano-/microstructures and displayed greater propensity to mineralize compared to control surfaces. This engineering approach and the resulting nature-inspired multiscale-structured surface offers desired features for improving osseointegration and antibacterial performance toward the development of next-generation orthopedic and dental implants.
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Affiliation(s)
- Shaheer Maher
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Asiri R Wijenayaka
- Centre for Orthopaedic and Trauma Research, Adelaide Medical School, Discipline of Orthopaedics and Trauma, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Luis Lima-Marques
- The Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Dongqing Yang
- Centre for Orthopaedic and Trauma Research, Adelaide Medical School, Discipline of Orthopaedics and Trauma, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Gerald J Atkins
- Centre for Orthopaedic and Trauma Research, Adelaide Medical School, Discipline of Orthopaedics and Trauma, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
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Nijhuis J, Tran QD, Tran NN, Dinh T, Phan HP, Nguyen NT, Tran T, Losic D, Hessel V. Toward on-board microchip synthesis of CdSe vs. PbSe nanocrystalline quantum dots as a spectral decoy for protecting space assets. REACT CHEM ENG 2021. [DOI: 10.1039/d0re00327a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fabrication of the reaction chamber using silicon carbide. (A) A schematic sketch of the fabrication flow; (B) a photograph of a transparent 6 inch SiC-on-glass wafer; (C) the surface morphology of the SiC film.
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Affiliation(s)
- Job Nijhuis
- School of Chemical Engineering and Advanced Materials
- University of Adelaide
- Australia
- Department of Chemical Engineering and Chemistry
- Eindhoven University of Technology
| | - Quy Don Tran
- School of Chemical Engineering and Advanced Materials
- University of Adelaide
- Australia
| | - Nam Nghiep Tran
- School of Chemical Engineering and Advanced Materials
- University of Adelaide
- Australia
- Department of Chemical Engineering
- Can Tho University
| | - Toan Dinh
- Department of Mechanical Engineering
- University of Southern Queensland
- Australia
- Queensland Micro and Nanotechnology Centre
- Griffith University
| | - Hoang-Phuong Phan
- Queensland Micro and Nanotechnology Centre
- Griffith University
- Australia
| | - Nam Trung Nguyen
- Queensland Micro and Nanotechnology Centre
- Griffith University
- Australia
| | - Tung Tran
- School of Chemical Engineering and Advanced Materials
- University of Adelaide
- Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials
- University of Adelaide
- Australia
| | - Volker Hessel
- School of Chemical Engineering and Advanced Materials
- University of Adelaide
- Australia
- School of Engineering
- University of Warwick
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Krebsz M, Pasinszki T, Tung TT, Nine MJ, Losic D. Multiple applications of bio-graphene foam for efficient chromate ion removal and oil-water separation. Chemosphere 2021; 263:127790. [PMID: 32854003 DOI: 10.1016/j.chemosphere.2020.127790] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/20/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
This paper presents the synthesis of bio-graphene foams (bGFs) from renewable sources, and the application of bGFs as new adsorbents in removal of chromate ions and oil contaminants from waste water. A two-step synthetic method was developed to produce bGFs with unique porous architecture and high specific surface area (up to 805 m2 g-1) that is highly desirable for environmental applications. The adsorption performance of prepared bGFs for removal of chromate ions from water was studied in relation to CrO42- concentration, adsorbent load, pH, and contact time to confirm adsorption capacity, kinetics and pH dependence. The adsorption isotherms of chromate ions were consistent with the Langmuir model, revealing an outstanding adsorption capacity of 245 mg of Cr(VI)/g bGFs (pH∼7). bGFs were capable of reducing Cr(VI) in water below the maximum permissible level (0.050 mg dm-3) for human consumption (WHO). In a second application, our results convincingly showed excellent performance of bGFs in separating organic solvents and oils from water in a continuous oil-water separation process showing 99.1% and 98.8% separation efficiency for toluene and petroleum, respectively. Our findings confirm that the outstanding performance of bGFs, and suggest their use as efficient adsorbents for environmental remediation.
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Affiliation(s)
- Melinda Krebsz
- School of Chemical Engineering, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia
| | - Tibor Pasinszki
- Fiji National University, Department of Chemistry, School of Pure Sciences, College of Engineering, Science & Technology, P.O.Box 7222, Nasinu, Fiji.
| | - Tran Thanh Tung
- School of Chemical Engineering, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia.
| | - Md Julker Nine
- School of Chemical Engineering, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, 5005, North Terrace, South Australia, Australia.
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Karunagaran R, Tran D, Tung TT, Shearer C, Losic D. A Unique Synthesis of Macroporous N-Doped Carbon Composite Catalyst for Oxygen Reduction Reaction. Nanomaterials (Basel) 2020; 11:nano11010043. [PMID: 33375351 PMCID: PMC7824199 DOI: 10.3390/nano11010043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 12/17/2022]
Abstract
Macroporous carbon materials (MCMs) are used extensively for many electrocatalytic applications, particularly as catalysts for oxygen reduction reactions (ORRs)—for example, in fuel cells. However, complex processes are currently required for synthesis of MCMs. We present a rapid and facile synthetic approach to produce tailored MCMs efficiently via pyrolysis of sulfonated aniline oligomers (SAOs). Thermal decomposition of SAO releases SO2 gas which acts as a blowing agent to form the macroporous structures. This process was used to synthesise three specifically tailored nitrogen (N)-doped MCM catalysts: N-SAO, N-SAO (phenol formaldehyde) (PF) and N-SAO-reduced graphene oxide (rGO). Analysis using Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) and X-ray diffraction (XRD) analysis confirmed the formation of macropores (100–350 µm). Investigation of ORR efficacy showed that N-SAOPF performed with the highest onset potential of 0.98 V (vs. RHE) and N-SAOrGO showed the highest limiting current density of 7.89 mAcm−2. The macroporous structure and ORR efficacy of the MCM catalysts synthesised using this novel process suggest that this method can be used to streamline MCM production while enabling the formation of composite materials that can be tailored for greater efficiency in many applications.
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Affiliation(s)
- Ramesh Karunagaran
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
| | - Diana Tran
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
| | - Tran Thanh Tung
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
- Institute of Research and Development, Duy Tan University, Da Nang 550000, Vietnam
- Correspondence: (T.T.T.); (D.L.)
| | - Cameron Shearer
- School of Chemistry, University of Adelaide, Adelaide, SA 5005, Australia;
| | - Dusan Losic
- ARC Graphene Research Hub, School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia; (R.K.); (D.T.)
- Correspondence: (T.T.T.); (D.L.)
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Uthappa U, Arvind O, Sriram G, Losic D, Ho-Young-Jung, Kigga M, Kurkuri MD. Nanodiamonds and their surface modification strategies for drug delivery applications. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101993] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Ho VD, Ng CT, Ozbakkaloglu T, Karunagaran RU, Farivar F, Goodwin A, Guckin CM, Ho VD, Losic D. Investigating the reinforcing mechanism and optimized dosage of pristine graphene for enhancing mechanical strengths of cementitious composites. RSC Adv 2020; 10:42777-42789. [PMID: 35514922 PMCID: PMC9057986 DOI: 10.1039/d0ra07639b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 11/08/2020] [Indexed: 11/21/2022] Open
Abstract
The proposed reinforcing mechanism and optimized dosage of pristine graphene (PRG) for enhancing mechanical, physicochemical and microstructural properties of cementitious mortar composites are presented. Five concentrations of PRG and two particle sizes are explored in this study. The results confirmed that the strength of the mortars depends on the dosage of PRG. The PRG sizes have a significant influence on the enhancement rate of mechanical strengths of the mortars, whereas they do not have a significant influence on the optimized PRG dosage for mechanical strengths. The PRG dosage of 0.07% is identified as the optimized content of PRG for enhancing mechanical strengths. The reinforcing mechanism of PRG for cement-based composites is mostly attributed to adhesion friction forces between PRG sheets and cementitious gels, which highly depends on the surface area of PRG sheets. The larger surface area of PRG sheets has a larger friction area associated with cementitious gels suggested to be one of favorable parameters for enhancing mechanical strengths with graphene additives. The proposed reinforcing mechanism and optimized dosage of pristine graphene (PRG) for enhancing mechanical, physicochemical and microstructural properties of cementitious mortar composites are presented.![]()
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Affiliation(s)
- Van Dac Ho
- School of Civil, Environmental and Mining Engineering, The University of Adelaide Australia .,School of Chemical Engineering, The University of Adelaide Australia .,ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide Australia
| | - Ching-Tai Ng
- School of Civil, Environmental and Mining Engineering, The University of Adelaide Australia
| | | | - Ramesh U Karunagaran
- School of Chemical Engineering, The University of Adelaide Australia .,ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide Australia
| | - Farzaneh Farivar
- School of Chemical Engineering, The University of Adelaide Australia .,ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide Australia
| | - Andy Goodwin
- First Graphene Ltd Suite 3, 9 Hampden Road Nedlands WA 6009 Australia
| | - Craig Mc Guckin
- First Graphene Ltd Suite 3, 9 Hampden Road Nedlands WA 6009 Australia
| | - Van Duong Ho
- University of Architecture Ho Chi Minh City Vietnam
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide Australia .,ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide Australia
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Hassan K, Nine MJ, Tung TT, Stanley N, Yap PL, Rastin H, Yu L, Losic D. Functional inks and extrusion-based 3D printing of 2D materials: a review of current research and applications. Nanoscale 2020; 12:19007-19042. [PMID: 32945332 DOI: 10.1039/d0nr04933f] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Graphene and related 2D materials offer an ideal platform for next generation disruptive technologies and in particular the potential to produce printed electronic devices with low cost and high throughput. Interest in the use of 2D materials to create functional inks has exponentially increased in recent years with the development of new ink formulations linked with effective printing techniques, including screen, gravure, inkjet and extrusion-based printing towards low-cost device manufacturing. Exfoliated, solution-processed 2D materials formulated into inks permits additive patterning onto both rigid and conformable substrates for printed device design with high-speed, large-scale and cost-effective manufacturing. Each printing technique has some sort of clear advantages over others that requires characteristic ink formulations according to their individual operational principles. Among them, the extrusion-based 3D printing technique has attracted heightened interest due to its ability to create three-dimensional (3D) architectures with increased surface area facilitating the design of a new generation of 3D devices suitable for a wide variety of applications. There still remain several challenges in the development of 2D material ink technologies for extrusion printing which must be resolved prior to their translation into large-scale device production. This comprehensive review presents the current progress on ink formulations with 2D materials and their broad practical applications for printed energy storage devices and sensors. Finally, an outline of the challenges and outlook for extrusion-based 3D printing inks and their place in the future printed devices ecosystem is presented.
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Affiliation(s)
- Kamrul Hassan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Md Julker Nine
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Nathan Stanley
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Le Yu
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia. and ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
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Hassan K, Tung TT, Yap PL, Nine MJ, Kim HC, Losic D. Fast response hydrogen gas sensor based on Pd/Cr nanogaps fabricated by a single-step bending deformation. Anal Chim Acta 2020; 1138:49-58. [PMID: 33161984 DOI: 10.1016/j.aca.2020.09.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/31/2020] [Accepted: 09/05/2020] [Indexed: 10/23/2022]
Abstract
The development of low-cost and high performing hydrogen gas sensors is important across many sectors, including mining, energy and defense using hydrogen (H2) gas. Herein, we demonstrate a new concept of H2 sensors based on Pd/Cr nanogaps created by using a simple mechanical bending deformation technique. These nanogap sensors can selectively detect the H2 gas based on transduction of the volume expansion after H2 uptake into an electrical signal by palladium-based metal-hydrides that allows closure of nanogaps for electrons flowing or tunneling. While this break-junction architecture, according to literature, can provide several advantages with research gaps in terms of fabricating nanogap sensors with ultra-fast response (≤4 s), the size of nanogap (≤20 nm) and their relationship with time response and recovery as addressed in this paper. Based on the computational modelling outcome, the size of the nanogaps can be investigated in order to optimize the fabrication conditions. Indeed, a single nanogap with optimum width (15 nm) acts as an on-off switch for best performing hydrogen detection. Moreover, with the unique design of Pd/Cr nanogap, the developed sensing device meets major requirement of advanced H2 gas sensor including room temperature (25 °C) operation, detection of trace amounts (10-40,000 ppm), good linearity, ultra-fast response-recovery time (3/4.5 s) and high selectivity. The presented economical lithography-free fabrication method has simple circuitry, low power consumption, recyclability, and favorable aging properties that promises great potential to be used for many practical applications of H2 detection.
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Affiliation(s)
- Kamrul Hassan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, SA 5005, Australia
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, SA 5005, Australia
| | - Pei Lay Yap
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, SA 5005, Australia
| | - Md J Nine
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, SA 5005, Australia
| | - Hyeon C Kim
- School of Electrical Engineering, University of Ulsan, 93 Daehak-ro, Nam-gu, Ulsan 680-749, Republic of Korea
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, SA 5005, Australia; ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, SA 5005, Australia.
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Rastin H, Zhang B, Mazinani A, Hassan K, Bi J, Tung TT, Losic D. 3D bioprinting of cell-laden electroconductive MXene nanocomposite bioinks. Nanoscale 2020; 12:16069-16080. [PMID: 32579663 DOI: 10.1039/d0nr02581j] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
MXenes, a new family of burgeoning two-dimensional (2D) transition metal carbides/nitrides, have been extensively explored in recent years owing to their outstanding properties such as a large specific surface area, high electrical conductivity, low toxicity, and biodegradability. Numerous efforts have been devoted to exploring MXenes for various biomedical applications such as cancer therapy, bioimaging, biosensing, and drug delivery. However, the potential application of MXene nanosheets in tissue engineering has been almost overlooked despite their excellent performance in other biomedical applications. The overarching goal of this paper is to demonstrate the potential of MXene cell-laden bioinks for tissue engineering and their ability to assemble functional scaffolds to regenerate damaged tissue via 3D bioprinting. We formulate a new electroconductive cell-laden bioink composed of Ti3C2 MXene nanosheets dispersed homogeneously within hyaluronic acid/alginate (HA/Alg) hydrogels and showed its performance for extrusion-based 3D bioprinting. The prepared hydrogel bioinks with MXenes display excellent rheological properties, which allows the fabrication of multilayered 3D structures with high resolution and shape retention. Moreover, the introduction of Ti3C2 MXene nanosheets within the HA/Alg hydrogel introduces electrical conductivity to the ink, addressing the poor electrical conductivity of the current bioinks that mismatch with the physico-chemical properties of tissue. In addition, the MXene nanocomposite ink with encapsulated Human Embryonic Kidney 293 (HEK-293) cells displayed high cell viability (>95%) in both bulk hydrogel and 3D bioprinted structures. These results suggest that MXene nanocomposite bioinks and their 3D bioprinting with high electrical conductivity, biocompatibility and degradability can synergize some new applications for tissue and neural engineering.
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Affiliation(s)
- Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Bingyang Zhang
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Arash Mazinani
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Kamrul Hassan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Jingxiu Bi
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Tran Thanh Tung
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia.
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Yap PL, Tung TT, Kabiri S, Matulick N, Tran DN, Losic D. Polyamine-modified reduced graphene oxide: A new and cost-effective adsorbent for efficient removal of mercury in waters. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116441] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Markovic M, Andelkovic I, Shuster J, Janik L, Kumar A, Losic D, McLaughlin MJ. Addressing challenges in providing a reliable ecotoxicology data for graphene-oxide (GO) using an algae (Raphidocelis subcapitata), and the trophic transfer consequence of GO-algae aggregates. Chemosphere 2020; 245:125640. [PMID: 31864043 DOI: 10.1016/j.chemosphere.2019.125640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 12/09/2019] [Accepted: 12/11/2019] [Indexed: 06/10/2023]
Abstract
The graphene oxide (GO) due to its exceptional structure, physicochemical and mechanical properties is a very attractive material for industry application. Even though, the unique properties of GO (e.g. structure, size, shape, etc.) make the risk assessment of this nanomaterial very challenging in comparison with conventional ecotoxicology studies required by regulators. Thus, there is a need for standardized characterization techniques and methodology to secure a high quality/reliable data on the ecotoxicology of GO, and to establish environmentally acceptable levels. Herein, authors address the crucial quality criteria when evaluating the ecotoxicology of GO using an algae (Raphidocelis subcapitata) and a shrimp (Paratya australiensis). This study provides a detail characterization and modification of the used GO, robust quantification and a suspension stability in different media for ecotoxicology studies. It was observed that under the same exposure conditions the behavior of GO and the estimated outcomes (IC50 values) in modified algae media differed in comparison to the referent media. Further to that, the adverse effects of GO on the algae cell structure and the potential uptake of GO by the algae cells were examined using the TEM with different staining techniques to avoid artefacts. Shrimps which were exposed to GO-algae aggregates via the food intake did not indicate stress or accumulation of GO. Our work presents an important insight to necessity of establishing a benchmark ecotoxicology assays for GO (e.g. characterization techniques, choice of media, etc.) and providing a reliable data to be used by regulators in risk assessment of two-dimensional (2D) nanomaterials.
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Affiliation(s)
- Marijana Markovic
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, PMB 1, Glen Osmond, SA, 5064, Australia; CSIRO Land and Water, Waite Road, Urrbrae, South Australia, 5064, Australia; Center of Chemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia.
| | - Ivan Andelkovic
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, PMB 1, Glen Osmond, SA, 5064, Australia
| | - Jeremiah Shuster
- School of Biological Science, University of Adelaide, South Australia, 5005, Australia; CSIRO Land and Water, Waite Road, Urrbrae, South Australia, 5064, Australia
| | - Leslie Janik
- CSIRO Land and Water, Waite Road, Urrbrae, South Australia, 5064, Australia
| | - Anupama Kumar
- CSIRO Land and Water, Waite Road, Urrbrae, South Australia, 5064, Australia
| | - Dusan Losic
- School of Chemical Engineering, University of Adelaide, South Australia, 5005, Australia
| | - Michael J McLaughlin
- Soil Science, School of Agriculture Food and Wine, University of Adelaide, PMB 1, Glen Osmond, SA, 5064, Australia.
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Kabiri S, Andelkovic IB, da Silva RC, Degryse F, Baird R, Tavakkoli E, Losic D, McLaughlin MJ. Engineered Phosphate Fertilizers with Dual-Release Properties. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00403] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shervin Kabiri
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Ivan B. Andelkovic
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Rodrigo C. da Silva
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
| | - Fien Degryse
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
| | - Roslyn Baird
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
| | - Ehsan Tavakkoli
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
- NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Wagga Wagga, NSW 2650, Australia
- Graham Centre for Agricultural Innovation, Charles Sturt University, Wagga Wagga, NSW 2650, Australia
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Michael J. McLaughlin
- Fertiliser Technology Research Centre, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Waite Campus, Glen Osmond, SA 5064, Australia
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Rastin H, Ormsby RT, Atkins GJ, Losic D. 3D Bioprinting of Methylcellulose/Gelatin-Methacryloyl (MC/GelMA) Bioink with High Shape Integrity. ACS Appl Bio Mater 2020; 3:1815-1826. [DOI: 10.1021/acsabm.0c00169] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Hadi Rastin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Renee T. Ormsby
- Biomedical Orthopaedic Research Group, Centre for Orthopaedic & Trauma Research, The University of Adelaide, Adelaide, South Australia 5000, Australia
| | - Gerald J. Atkins
- Biomedical Orthopaedic Research Group, Centre for Orthopaedic & Trauma Research, The University of Adelaide, Adelaide, South Australia 5000, Australia
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
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Nine MJ, Kabiri S, Sumona AK, Tung TT, Moussa MM, Losic D. Superhydrophobic/superoleophilic natural fibres for continuous oil-water separation and interfacial dye-adsorption. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116062] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Ishaq S, Kanwal F, Atiq S, Moussa M, Azhar U, Losic D. Dielectric Properties of Graphene/Titania/Polyvinylidene Fluoride (G/TiO 2/PVDF) Nanocomposites. Materials (Basel) 2020; 13:ma13010205. [PMID: 31947781 PMCID: PMC6981582 DOI: 10.3390/ma13010205] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 12/18/2019] [Accepted: 12/31/2019] [Indexed: 12/02/2022]
Abstract
Flexible electronics have gained eminent importance in recent years due to their high mechanical strength and resistance to environmental conditions, along with their effective energy storage and energy generating abilities. In this work, graphene/ceramic/polymer based flexible dielectric nanocomposites have been prepared and their dielectric properties were characterized. The composite was formulated by combining graphene with rutile and anatase titania, and polyvinylidene fluoride in different weight ratios to achieve optimized dielectric properties and flexibility. After preparation, composites were characterized for their morphologies, structures, functional groups, thermal stability and dielectric characterizations by using scanning electron microscopy, X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, thermal gravimetric analysis and impedance spectroscopy. Dielectric results showed that prepared flexible composite exhibited dielectric constant of 70.4 with minor leakage current (tanδ) i.e., 0.39 at 100 Hz. These results were further confirmed by calculating alternating current (AC) conductivity and electric modulus which ensured that prepared material is efficient dielectric material which may be employed in electronic industry for development of next generation flexible energy storage devices.
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Affiliation(s)
- Saira Ishaq
- Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan;
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; (M.M.); (U.A.)
- The ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Farah Kanwal
- Institute of Chemistry, University of the Punjab, Lahore 54590, Pakistan;
- Correspondence: (F.K.); (D.L.); Tel.: +92-300-420-5680 (F.K.); +61-88-313-4648 (D.L.)
| | - Shahid Atiq
- Centre of Excellence in Solid State Physics, University of the Punjab, Lahore 54590, Pakistan;
| | - Mahmoud Moussa
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; (M.M.); (U.A.)
- The ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Umar Azhar
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; (M.M.); (U.A.)
| | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia; (M.M.); (U.A.)
- The ARC Research Hub for Graphene Enabled Industry Transformation, The University of Adelaide, Adelaide, SA 5005, Australia
- Correspondence: (F.K.); (D.L.); Tel.: +92-300-420-5680 (F.K.); +61-88-313-4648 (D.L.)
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