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Kothandam G, Singh G, Guan X, Lee JM, Ramadass K, Joseph S, Benzigar M, Karakoti A, Yi J, Kumar P, Vinu A. Recent Advances in Carbon-Based Electrodes for Energy Storage and Conversion. Adv Sci (Weinh) 2023; 10:e2301045. [PMID: 37096838 PMCID: PMC10288283 DOI: 10.1002/advs.202301045] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 03/27/2023] [Indexed: 05/03/2023]
Abstract
Carbon-based nanomaterials, including graphene, fullerenes, and carbon nanotubes, are attracting significant attention as promising materials for next-generation energy storage and conversion applications. They possess unique physicochemical properties, such as structural stability and flexibility, high porosity, and tunable physicochemical features, which render them well suited in these hot research fields. Technological advances at atomic and electronic levels are crucial for developing more efficient and durable devices. This comprehensive review provides a state-of-the-art overview of these advanced carbon-based nanomaterials for various energy storage and conversion applications, focusing on supercapacitors, lithium as well as sodium-ion batteries, and hydrogen evolution reactions. Particular emphasis is placed on the strategies employed to enhance performance through nonmetallic elemental doping of N, B, S, and P in either individual doping or codoping, as well as structural modifications such as the creation of defect sites, edge functionalization, and inter-layer distance manipulation, aiming to provide the general guidelines for designing these devices by the above approaches to achieve optimal performance. Furthermore, this review delves into the challenges and future prospects for the advancement of carbon-based electrodes in energy storage and conversion.
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Affiliation(s)
- Gopalakrishnan Kothandam
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Jang Mee Lee
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Kavitha Ramadass
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Stalin Joseph
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Mercy Benzigar
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
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2
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Guan X, Li Z, Geng X, Lei Z, Karakoti A, Wu T, Kumar P, Yi J, Vinu A. Emerging Trends of Carbon-Based Quantum Dots: Nanoarchitectonics and Applications. Small 2023; 19:e2207181. [PMID: 36693792 DOI: 10.1002/smll.202207181] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Carbon-based quantum dots (QDs) have emerged as a fascinating class of advanced materials with a unique combination of optoelectronic, biocompatible, and catalytic characteristics, apt for a plethora of applications ranging from electronic to photoelectrochemical devices. Recent research works have established carbon-based QDs for those frontline applications through improvements in materials design, processing, and device stability. This review broadly presents the recent progress in the synthesis of carbon-based QDs, including carbon QDs, graphene QDs, graphitic carbon nitride QDs and their heterostructures, as well as their salient applications. The synthesis methods of carbon-based QDs are first introduced, followed by an extensive discussion of the dependence of the device performance on the intrinsic properties and nanostructures of carbon-based QDs, aiming to present the general strategies for device designing with optimal performance. Furthermore, diverse applications of carbon-based QDs are presented, with an emphasis on the relationship between band alignment, charge transfer, and performance improvement. Among the applications discussed in this review, much focus is given to photo and electrocatalytic, energy storage and conversion, and bioapplications, which pose a grand challenge for rational materials and device designs. Finally, a summary is presented, and existing challenges and future directions are elaborated.
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Affiliation(s)
- Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
| | - Zhixuan Li
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Xun Geng
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Zhihao Lei
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Tom Wu
- School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia
- Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, 999077, P. R. China
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
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Mohanan S, Guan X, Liang M, Karakoti A, Vinu A. Stimuli-Responsive Silica Silanol Conjugates: Strategic Nanoarchitectonics in Targeted Drug Delivery. Small 2023:e2301113. [PMID: 36967548 DOI: 10.1002/smll.202301113] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/28/2023] [Indexed: 06/18/2023]
Abstract
The design of novel drug delivery systems is exceptionally critical in disease treatments. Among the existing drug delivery systems, mesoporous silica nanoparticles (MSNs) have shown profuse promise owing to their structural stability, tunable morphologies/sizes, and ability to load different payload chemistry. Significantly, the presence of surface silanol groups enables functionalization with relevant drugs, imaging, and targeting agents, promoting their utility and popularity among researchers. Stimuli-responsive silanol conjugates have been developed as a novel, more effective way to conjugate, deliver, and release therapeutic drugs on demand and precisely to the selected location. Therefore, it is urgent to summarize the current understanding and the surface silanols' role in making MSN a versatile drug delivery platform. This review provides an analytical understanding of the surface silanols, chemistry, identification methods, and their property-performance correlation. The chemistry involved in converting surface silanols to a stimuli-responsive silica delivery system by endogenous/exogenous stimuli, including pH, redox potential, temperature, and hypoxia, is discussed in depth. Different chemistries for converting surface silanols to stimuli-responsive bonds are discussed in the context of drug delivery. The critical discussion is culminated by outlining the challenges in identifying silanols' role and overcoming the limitations in synthesizing stimuli-responsive mesoporous silica-based drug delivery systems.
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Affiliation(s)
- Shan Mohanan
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Mingtao Liang
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, The University of Newcastle, Callaghan, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, The School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
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Guan X, Kumar P, Li Z, Tran TKA, Chahal S, Lei Z, Huang C, Lin C, Huang J, Hu L, Chang Y, Wang L, Britto JSJ, Panneerselvan L, Chu D, Wu T, Karakoti A, Yi J, Vinu A. Borophene Embedded Cellulose Paper for Enhanced Photothermal Water Evaporation and Prompt Bacterial Killing. Adv Sci (Weinh) 2023; 10:e2205809. [PMID: 36698305 PMCID: PMC9982542 DOI: 10.1002/advs.202205809] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/19/2022] [Indexed: 05/10/2023]
Abstract
Solar-driven photothermal water evaporation is considered an elegant and sustainable technology for freshwater production. The existing systems, however, often suffer from poor stability and biofouling issues, which severely hamper their prospects in practical applications. Conventionally, photothermal materials are deposited on the membrane supports via vacuum-assisted filtration or dip-coating methods. Nevertheless, the weak inherent material-membrane interactions frequently lead to poor durability, and the photothermal material layer can be easily peeled off from the hosting substrates or partially dissolved when immersed in water. In the present article, the discovery of the incorporation of borophene into cellulose nanofibers (CNF), enabling excellent environmental stability with a high light-to-heat conversion efficiency of 91.5% and water evaporation rate of 1.45 kg m-2 h-1 under simulated sunlight is reported. It is also demonstrated that borophene papers can be employed as an excellent active photothermal material for eliminating almost 100% of both gram-positive and gram-negative bacteria within 20 min under three sun irradiations. The result opens a new direction for the design of borophene-based papers with unique photothermal properties which can be used for the effective treatment of a wide range of wastewaters.
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Affiliation(s)
- Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
- Department of PhysicsIndian Institute of Technology PatnaBihta CampusPatna801106India
| | - Zhixuan Li
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Thi Kim Anh Tran
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Sumit Chahal
- Department of PhysicsIndian Institute of Technology PatnaBihta CampusPatna801106India
| | - Zhihao Lei
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Chien‐Yu Huang
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Chun‐Ho Lin
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Jing‐Kai Huang
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Long Hu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Yuan‐Chih Chang
- School of Photovoltaic and Renewable Engineeringthe University of New South WalesSydneyNSW2052Australia
| | - Li Wang
- School of Photovoltaic and Renewable Engineeringthe University of New South WalesSydneyNSW2052Australia
| | - Jolitta S. J. Britto
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Logeshwaran Panneerselvan
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Dewei Chu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
| | - Tom Wu
- School of Materials Science and EngineeringUniversity of New South Wales (UNSW)SydneyNSW2052Australia
- Department of Applied PhysicsThe Hong Kong Polytechnic UniversityHung HomHong Kong999077China
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of Engineering, Science and Environment (CESE)The University of NewcastleCallaghanNSW2308Australia
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Radhakrishnan D, Mohanan S, Choi G, Choy JH, Tiburcius S, Trinh HT, Bolan S, Verrills N, Tanwar P, Karakoti A, Vinu A. The emergence of nanoporous materials in lung cancer therapy. Sci Technol Adv Mater 2022; 23:225-274. [PMID: 35875329 PMCID: PMC9307116 DOI: 10.1080/14686996.2022.2052181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 01/31/2022] [Accepted: 03/08/2022] [Indexed: 06/15/2023]
Abstract
Lung cancer is one of the most common cancers, affecting more than 2.1 million people across the globe every year. A very high occurrence and mortality rate of lung cancer have prompted active research in this area with both conventional and novel forms of therapies including the use of nanomaterials based drug delivery agents. Specifically, the unique physico-chemical and biological properties of porous nanomaterials have gained significant momentum as drug delivery agents for delivering a combination of drugs or merging diagnosis with targeted therapy for cancer treatment. This review focuses on the emergence of nano-porous materials for drug delivery in lung cancer. The review analyses the currently used nanoporous materials, including inorganic, organic and hybrid porous materials for delivering drugs for various types of therapies, including chemo, radio and phototherapy. It also analyses the selected research on stimuli-responsive nanoporous materials for drug delivery in lung cancer before summarizing the various findings and projecting the future of emerging trends. This review provides a strong foundation for the current status of the research on nanoporous materials, their limitations and the potential for improving their design to overcome the unique challenges of delivering drugs for the treatment of lung cancer.
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Affiliation(s)
- Deepika Radhakrishnan
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Shan Mohanan
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Goeun Choi
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan31116, Republic of Korea
- College of Science and Technology, Dankook University, Cheonan31116, Republic of Korea
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan31116, Korea
| | - Jin-Ho Choy
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan31116, Republic of Korea
- Course, College of Medicine, Dankook UniversityDepartment of Pre-medical, Cheonan31116, Korea
- Tokyo Tech World Research Hub Initiative (WRHI), Institute of Innovative Research, Tokyo Institute of Technology, Yokohama226-8503, Japan
| | - Steffi Tiburcius
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Hoang Trung Trinh
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Shankar Bolan
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Nikki Verrills
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellness, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Pradeep Tanwar
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
- School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellness, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering, Science and Environment, School of Engineering, The University of Newcastle, Callaghan, NSW, 2308, Australia
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6
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Tiburcius S, Krishnan K, Jose L, Patel V, Ghosh A, Sathish CI, Weidenhofer J, Yang JH, Verrills NM, Karakoti A, Vinu A. Egg-yolk core-shell mesoporous silica nanoparticles for high doxorubicin loading and delivery to prostate cancer cells. Nanoscale 2022; 14:6830-6845. [PMID: 35441642 DOI: 10.1039/d2nr00783e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mesoporous silica-based nanoparticles (MSNs) have gained rapid interest as a drug delivery system (DDS) and demonstrated their versatility in delivering drugs for the treatment of various cancers. However, the drug loading efficiency of MSNs is low and is usually improved by improving textural properties through complicated synthesis methods or by post synthesis modification of the surface that can result in the loss of surface area and modify its drug release properties. In this study, we report a direct single-step synthesis of MSNs with a unique egg-yolk core-shell morphology, large pore volume and a hydrophilic surface, decorated with nitrogen rich surface functionalities for increasing its drug loading capacity. This combination of excellent textural properties and surface functionalisation was achieved by a simple soft templating method using dual surfactants and the silica sources assisted by employing either triethylamine (TEA) or triethanolamine (TEO) as the hydrolysis agent. The morphology and well-ordered mesoporous structure can simply be tuned by changing the pH of the synthesis medium that affects the self-assembly mechanism of the micelles. HRTEM image of samples clearly revealed an egg-yolk core-shell morphology with a thin mesoporous silica shell. The optimised MSN samples synthesized at a pH of 11 using either TEA or TEO depicted a higher doxorubicin (Dox) loading capacity of 425 μg mg-1 and 481 μg mg-1 respectively, as compared to only 347 μg mg-1 for MSN samples due to the uniform distribution of nitrogen functionalities. The anticancer activity of Dox loaded MSNs evaluated in two different prostate cancer cell lines (PC-3 and LNCaP) showed a higher cytotoxicity of the drug loaded on optimised MSN samples as compared to pristine MSNs without affecting the cellular uptake of the particles. These results suggest that the unique single-step synthesis and functionalisation method resulted in successfully achieving higher drug loading in egg-yolk core-shell nitrogen functionalised MSNs and could be implemented as an effective carrier of chemotherapeutic drugs.
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Affiliation(s)
- Steffi Tiburcius
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Kannan Krishnan
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Linta Jose
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Vaishwik Patel
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Arnab Ghosh
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, The University of Newcastle, Callaghan, 2308, NSW, Australia
| | - C I Sathish
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Judith Weidenhofer
- Hunter Medical Research Institute (HMRI), New Lambton Heights, 2305, NSW, Australia
| | - Jae-Hun Yang
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Nicole M Verrills
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, The University of Newcastle, Callaghan, 2308, NSW, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, 2308, NSW, Australia.
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7
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Kansara K, Bolan S, Radhakrishnan D, Palanisami T, Al-Muhtaseb AH, Bolan N, Vinu A, Kumar A, Karakoti A. A critical review on the role of abiotic factors on the transformation, environmental identity and toxicity of engineered nanomaterials in aquatic environment. Environ Pollut 2022; 296:118726. [PMID: 34953948 DOI: 10.1016/j.envpol.2021.118726] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 09/02/2021] [Revised: 12/08/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Engineered nanomaterials (ENMs) are at the forefront of many technological breakthroughs in science and engineering. The extensive use of ENMs in several consumer products has resulted in their release to the aquatic environment. ENMs entering the aquatic ecosystem undergo a dynamic transformation as they interact with organic and inorganic constituents present in aquatic environment, specifically abiotic factors such as NOM and clay minerals, and attain an environmental identity. Thus, a greater understanding of ENM-abiotic factors interactions is required for an improved risk assessment and sustainable management of ENMs contamination in the aquatic environment. This review integrates fundamental aspects of ENMs transformation in aquatic environment as impacted by abiotic factors, and delineates the recent advances in bioavailability and ecotoxicity of ENMs in relation to risk assessment for ENMs-contaminated aquatic ecosystem. It specifically discusses the mechanism of transformation of different ENMs (metals, metal oxides and carbon based nanomaterials) following their interaction with the two most common abiotic factors NOM and clay minerals present within the aquatic ecosystem. The review critically discusses the impact of these mechanisms on the altered ecotoxicity of ENMs including the impact of such transformation at the genomic level. Finally, it identifies the gaps in our current understanding of the role of abiotic factors on the transformation of ENMs and paves the way for the future research areas.
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Affiliation(s)
- Krupa Kansara
- Biological and Life Sciences, School of Arts and Science, Ahmedabad University, Navrangpura, Ahmedabad, Gujarat, - 380009, India
| | - Shiv Bolan
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering, College of Engineering Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Deepika Radhakrishnan
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering, College of Engineering Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Thava Palanisami
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering, College of Engineering Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ala'a H Al-Muhtaseb
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman
| | - Nanthi Bolan
- School of Agriculture and Environment, Institute of Agriculture, University of Western Australia, Perth, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering, College of Engineering Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ashutosh Kumar
- Biological and Life Sciences, School of Arts and Science, Ahmedabad University, Navrangpura, Ahmedabad, Gujarat, - 380009, India
| | - Ajay Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering, College of Engineering Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
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Tiburcius S, Krishnan K, Patel V, Netherton J, Sathish C, Weidenhofer J, Yang JH, Verrills NM, Karakoti A, Vinu A. Triple Surfactant Assisted Synthesis of Novel Core-shell Mesoporous Silica Nanoparticles with High Surface Area for Drug Delivery for the Prostate Cancer. BCSJ 2022. [DOI: 10.1246/bcsj.20210428] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Steffi Tiburcius
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
| | - Kannan Krishnan
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
| | - Vaishwik Patel
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
| | - Jacob Netherton
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, The University of Newcastle, Callaghan, 2308, NSW, Australia
| | - C.I. Sathish
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
| | - Judith Weidenhofer
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, The University of Newcastle, Callaghan, 2308, NSW, Australia
| | - Jae-Hun Yang
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
| | - Nicole M Verrills
- School of Biomedical Sciences and Pharmacy, College of Health Medicine and Wellbeing, The University of Newcastle, Callaghan, 2308, NSW, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, College of Engineering Science and Environment
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Gujral HS, Singh G, Baskar AV, Guan X, Geng X, Kotkondawar AV, Rayalu S, Kumar P, Karakoti A, Vinu A. Metal nitride-based nanostructures for electrochemical and photocatalytic hydrogen production. Sci Technol Adv Mater 2022; 23:76-119. [PMID: 35309252 PMCID: PMC8928826 DOI: 10.1080/14686996.2022.2029686] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/10/2022] [Accepted: 01/12/2022] [Indexed: 05/19/2023]
Abstract
The over-dependence on fossil fuels is one of the critical issues to be addressed for combating greenhouse gas emissions. Hydrogen, one of the promising alternatives to fossil fuels, is renewable, carbon-free, and non-polluting gas. The complete utilization of hydrogen in every sector ranging from small to large scale could hugely benefit in mitigating climate change. One of the key aspects of the hydrogen sector is its production via cost-effective and safe ways. Electrolysis and photocatalysis are well-known processes for hydrogen production and their efficiency relies on electrocatalysts, which are generally noble metals. The usage of noble metals as catalysts makes these processes costly and their scarcity is also a limiting factor. Metal nitrides and their porous counterparts have drawn considerable attention from researchers due to their good promise for hydrogen production. Their properties such as active metal centres, nitrogen functionalities, and porous features such as surface area, pore-volume, and tunable pore size could play an important role in electrochemical and photocatalytic hydrogen production. This review focuses on the recent developments in metal nitrides from their synthesis methods point of view. Much attention is given to the emergence of new synthesis techniques, methods, and processes of synthesizing the metal nitride nanostructures. The applications of electrochemical and photocatalytic hydrogen production are summarized. Overall, this review will provide useful information to researchers working in the field of metal nitrides and their application for hydrogen production.
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Affiliation(s)
- Harpreet Singh Gujral
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
- CONTACT Gurwinder Singh ; Ajayan Vinu Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Arun V. Baskar
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Xinwei Guan
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Xun Geng
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Abhay V. Kotkondawar
- Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, India
| | - Sadhana Rayalu
- Environmental Materials Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur, 440020, India
| | - Prashant Kumar
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN), College of Engineering, Science and Environment (CESE), School of Engineering, The University of Newcastle, University Drive, Callaghan, 2308, Australia
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10
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Sathish CI, Premkumar S, Chu X, Yu X, Breese MBH, Al‐Abri M, Al‐Muhtaseb AH, Karakoti A, Yi J, Vinu A. Microporous Carbon Nitride (C
3
N
5.4
) with Tetrazine based Molecular Structure for Efficient Adsorption of CO
2
and Water. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202108605] [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)
- CI Sathish
- Global Innovative Center for Advanced Nanomaterials (GICAN) College of Engineering, Science, and Environment The University of Newcastle Callaghan New South Wales 2308 Australia
| | - S. Premkumar
- Global Innovative Center for Advanced Nanomaterials (GICAN) College of Engineering, Science, and Environment The University of Newcastle Callaghan New South Wales 2308 Australia
| | - Xueze Chu
- Global Innovative Center for Advanced Nanomaterials (GICAN) College of Engineering, Science, and Environment The University of Newcastle Callaghan New South Wales 2308 Australia
| | - Xiaojiang Yu
- Singapore Synchrotron Light Source National University of Singapore Singapore 117603 Singapore
| | - Mark B. H. Breese
- Singapore Synchrotron Light Source National University of Singapore Singapore 117603 Singapore
- Department of Physics National University of Singapore Singapore 119260 Singapore
| | - Mohammed Al‐Abri
- Department of Petroleum and Chemical Engineering College of Engineering Sultan Qaboos University Muscat Oman
| | - Ala'a H. Al‐Muhtaseb
- Department of Petroleum and Chemical Engineering College of Engineering Sultan Qaboos University Muscat Oman
| | - Ajay Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN) College of Engineering, Science, and Environment The University of Newcastle Callaghan New South Wales 2308 Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials (GICAN) College of Engineering, Science, and Environment The University of Newcastle Callaghan New South Wales 2308 Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN) College of Engineering, Science, and Environment The University of Newcastle Callaghan New South Wales 2308 Australia
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11
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Sathish CI, Premkumar S, Chu X, Yu X, Breese MBH, Al-Abri M, Al-Muhtaseb AH, Karakoti A, Yi J, Vinu A. Microporous Carbon Nitride (C 3 N 5.4 ) with Tetrazine based Molecular Structure for Efficient Adsorption of CO 2 and Water. Angew Chem Int Ed Engl 2021; 60:21242-21249. [PMID: 34378296 DOI: 10.1002/anie.202108605] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/27/2021] [Indexed: 11/11/2022]
Abstract
Mesoporous carbon nitrides with C3 N5 and C3 N6 stoichiometries created a new momentum in the field of organic metal-free semiconductors owing to their unique band structures and high basicity. Here, we report on the preparation of a novel graphitic microporous carbon nitride with a tetrazine based chemical structure and the composition of C3 N5.4 using ultra-stable Y zeolite as the template and aminoguanidine hydrochloride, a high nitrogen-containing molecule, as the CN precursor. Spectroscopic characterization and density functional theory calculations reveal that the prepared material exhibits a new molecular structure, which comprises two tetrazines and one triazine rings in the unit cell and is thermodynamically stable. The resultant carbon nitride shows an outstanding surface area of 130.4 m2 g-1 and demonstrates excellent CO2 adsorption per unit surface area of 47.54 μmol m-2 , which is due to the existence of abundant free NH2 groups, basic sites and microporosity. The material also exhibits highly selective sensing over water molecules (151.1 mmol g-1 ) and aliphatic hydrocarbons due to its unique microporous structure with a high amount of hydrophilic nitrogen moieties and recognizing ability towards small molecules.
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Affiliation(s)
- C I Sathish
- Global Innovative Center for Advanced Nanomaterials (GICAN), College of Engineering, Science, and Environment, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - S Premkumar
- Global Innovative Center for Advanced Nanomaterials (GICAN), College of Engineering, Science, and Environment, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Xueze Chu
- Global Innovative Center for Advanced Nanomaterials (GICAN), College of Engineering, Science, and Environment, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Xiaojiang Yu
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 117603, Singapore
| | - Mark B H Breese
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 117603, Singapore.,Department of Physics, National University of Singapore, Singapore, 119260, Singapore
| | - Mohammed Al-Abri
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman
| | - Ala'a H Al-Muhtaseb
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat, Oman
| | - Ajay Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN), College of Engineering, Science, and Environment, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials (GICAN), College of Engineering, Science, and Environment, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), College of Engineering, Science, and Environment, The University of Newcastle, Callaghan, New South Wales, 2308, Australia
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12
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Singh G, Lee JM, Kothandam G, Palanisami T, Al-Muhtaseb AH, Karakoti A, Yi J, Bolan N, Vinu A. A Review on the Synthesis and Applications of Nanoporous Carbons for the Removal of Complex Chemical Contaminants. BCSJ 2021. [DOI: 10.1246/bcsj.20200379] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Gurwinder Singh
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jang Mee Lee
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Gopalakrishnan Kothandam
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Thavamani Palanisami
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ala'a H. Al-Muhtaseb
- Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, P.O. Box 33, Al-Khod 123, Muscat, Oman
| | - Ajay Karakoti
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Nanthi Bolan
- College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
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13
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Tiburcius S, Krishnan K, Yang JH, Hashemi F, Singh G, Radhakrishnan D, Trinh HT, Verrills NM, Karakoti A, Vinu A. Silica-Based Nanoparticles as Drug Delivery Vehicles for Prostate Cancer Treatment. CHEM REC 2020; 21:1535-1568. [PMID: 33320438 DOI: 10.1002/tcr.202000104] [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: 08/27/2020] [Accepted: 10/21/2020] [Indexed: 12/24/2022]
Abstract
Prostate cancer (PCa) is one of the most commonly diagnosed cancers and is the fifth common cause of cancer-related mortality in men. Current methods for PCa treatment are insufficient owing to the challenges related to the non-specificity, instability and side effects caused by the drugs and therapy agents. These drawbacks can be mitigated by the design of a suitable drug delivery system that can ensure targeted delivery and minimise side effects. Silica based nanoparticles (SBNPs) have emerged as one of the most versatile materials for drug delivery due to their tunable porosities, high surface area and tremendous capacity to load various sizes and chemistry of drugs. This review gives a brief overview of the diagnosis and current treatment strategies for PCa outlining their existing challenges. It critically analyzes the design, development and application of pure, modified and hybrid SBNPs based drug delivery systems in the treatment of PCa, their advantages and limitations.
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Affiliation(s)
- Steffi Tiburcius
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Kannan Krishnan
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Jae-Hun Yang
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Fatemeh Hashemi
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Deepika Radhakrishnan
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Hoang Trung Trinh
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Nicole M Verrills
- School of Biomedical Sciences and Pharmacy, Faculty of Health and Medicine, The University of Newcastle, Callaghan, 2308, NSW, Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials, Faculty of Engineering and Built Environment
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14
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Ramadass K, Sathish CI, MariaRuban S, Kothandam G, Joseph S, Singh G, Kim S, Cha W, Karakoti A, Belperio T, Yi JB, Vinu A. Carbon Nanoflakes and Nanotubes from Halloysite Nanoclays and their Superior Performance in CO 2 Capture and Energy Storage. ACS Appl Mater Interfaces 2020; 12:11922-11933. [PMID: 32067462 DOI: 10.1021/acsami.9b21510] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanoporous carbon (HNC) with a flake and nanotubular morphology and a high specific surface area is prepared by using natural halloysite nanotubes (HNTs), a low-cost and naturally available clay material with a mixture of flaky and tubular morphology. A controlled pore-filling technique is used to selectively control the porosity, morphology, and the specific surface area of the HNC. Activated nanoporous carbon (AHNC) with a high specific surface area is also prepared by using HNT together with the activation process with zinc chloride (ZnCl2). HNC exhibits flakes and tubular morphologies, which offer a high specific surface area (837 m2/g). The specific surface area of AHNC is 1646 m2/g, 74 times greater than the specific surface area of pure HNT (22.5 m2/g). These data revealed that the single-step activation combined with the nanotemplating results in creating a huge impact on the specific surface area of the HNC. Both HNC and AHNC are employed as adsorbents for CO2 adsorption at different pressures and adsorption temperatures. The CO2 adsorption capacity of AHNC is 25.7 mmol/g at 0 °C, which is found to be significantly higher than that of activated carbon (AC), mesoporous carbon (CMK-3), mesoporous carbon nitride (MCN-1), and multiwalled carbon nanotube (MWCNT). AHNC is also tested as an electroactive material and demonstrates good supercapacitance, cyclic stability, and high capacitance retention. Specific capacitance of AHNC in the aqueous electrolyte is 197 F/g at 0.3 A/g, which is higher than that of AC, MWCNT, and CMK-3. The technique adopted for the preparation of both HNC and AHNC is quite unique and simple, has the potential to replace the existing highly expensive and sophisticated mesoporous silica-based nanotemplating strategy, and could also be applied for the fabrication of series of advanced nanostructures with unique functionalities.
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Affiliation(s)
- Kavitha Ramadass
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - C I Sathish
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Sujanya MariaRuban
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Gopalakrishnan Kothandam
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Stalin Joseph
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Gurwinder Singh
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Sungho Kim
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Wangsoo Cha
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Ajay Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Tony Belperio
- Minotaur Exploration Pty Limited, Adelaide, South Australia 5067, Australia
| | - Jia Bao Yi
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, New South Wales 2308, Australia
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15
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Karakoti A, Yi J, Vinu A. Emerging Advanced Nanomaterials and their Applications. Small 2020; 16:e2001287. [PMID: 32220003 DOI: 10.1002/smll.202001287] [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] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Affiliation(s)
- Ajay Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering Faculty of Engineering and Built Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia
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16
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Vallabani NVS, Vinu A, Singh S, Karakoti A. Tuning the ATP-triggered pro-oxidant activity of iron oxide-based nanozyme towards an efficient antibacterial strategy. J Colloid Interface Sci 2020; 567:154-164. [PMID: 32045737 DOI: 10.1016/j.jcis.2020.01.099] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 01/28/2023]
Abstract
An alarming increase in bacterial resistance towards various types of antibiotics makes it imperative to design alternate or combinational therapies to treat stubborn bacterial infections. In this perspective, emerging tools like nanozymes, nanomaterials with biological enzyme like characteristics, are being utilised to control infections caused by bacterial pathogens. Among several nanozymes used for antibacterial applications, Fe3O4 nanoparticles (NP) received great attention due to their effective peroxidase like activity. The pH dependent peroxidase activity of Fe3O4 NP results in generation of OH radical via the unique Fenton chemistry of iron. However, their pH dependent activity is restricted to acidic environment and dramatic loss in antibacterial activity is observed at near neutral pH. Here we describe a novel strategy to overcome the pH lacunae of citrate coated Fe3O4 NP by utilizing adenosine triphosphate disodium salt (ATP) as a synergistic agent to accelerate the OH radical production and restore its antibacterial activity over a wide range of pH. This synergistic combination (30 µg/mL Fe3O4 NP and 2.5 mM ATP) shows a high bactericidal activity against both gram positive (B. subtilis) and gram negative (E. coli) bacterial strains, in presence of H2O2, at neutral pH. The synergistic effect (Fe3O4 NP + ATP) is determined from the viability assessment and membrane damage studies and is further confirmed by comparing the concentration of generated OH radicals. Over all, this study illustrates ATP assisted and OH-mediated bactericidal activity of Fe3O4 nanozyme at near neutral pH.
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Affiliation(s)
- N V Srikanth Vallabani
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, New South Wales 2308, Australia
| | - Sanjay Singh
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India.
| | - Ajay Karakoti
- Biological and Life Sciences, School of Arts and Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India; Global Innovative Center for Advanced Nanomaterials (GICAN), Faculty of Engineering and Built Environment (FEBE), The University of Newcastle, Callaghan, New South Wales 2308, Australia.
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17
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Singh G, Lee J, Karakoti A, Bahadur R, Yi J, Zhao D, AlBahily K, Vinu A. Emerging trends in porous materials for CO2 capture and conversion. Chem Soc Rev 2020; 49:4360-4404. [DOI: 10.1039/d0cs00075b] [Citation(s) in RCA: 255] [Impact Index Per Article: 63.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This review highlights the recent progress in porous materials (MOFs, zeolites, POPs, nanoporous carbons, and mesoporous materials) for CO2 capture and conversion.
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Affiliation(s)
- Gurwinder Singh
- Global Innovative Centre for Advanced Nanomaterials
- Faculty of Engineering & Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - Jangmee Lee
- Global Innovative Centre for Advanced Nanomaterials
- Faculty of Engineering & Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - Ajay Karakoti
- Global Innovative Centre for Advanced Nanomaterials
- Faculty of Engineering & Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - Rohan Bahadur
- Global Innovative Centre for Advanced Nanomaterials
- Faculty of Engineering & Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials
- Faculty of Engineering & Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - Dongyuan Zhao
- Department of Chemistry
- Laboratory of Advanced Nanomaterials
- iChEM (Collaborative Innovation Center of Chemistry for Energy materials)
- Fudan University
- Shanghai 200433
| | - Khalid AlBahily
- SABIC Corporate Research and Development Centre at KAUST
- Saudi Basic Industries Corporation
- Thuwal
- Saudi Arabia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials
- Faculty of Engineering & Built Environment
- University of Newcastle
- Callaghan
- Australia
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18
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Pandya A, Tripathi A, Purohit R, Singh S, Nandasiri MI, Karakoti A, Singh SP, Shanker R. Fluorescent magnesium nanocomplex in a protein scaffold for cell nuclei imaging applications. RSC Adv 2015. [DOI: 10.1039/c5ra18450a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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] Open
Abstract
For the first time, we report a facile strategy for the synthesis of ultra-fine blue-green emitting fluorescent magnesium nanoparticles–protein complex (MgNC) which shows excellent photo stability and also stain cell nuclei with high specificity.
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Affiliation(s)
- Alok Pandya
- Institute of Life Sciences
- School of Science and Technology
- Ahmedabad University
- Ahmedabad-380009
- India
| | - Apritam Tripathi
- Institute of Life Sciences
- School of Science and Technology
- Ahmedabad University
- Ahmedabad-380009
- India
| | - Rahul Purohit
- Institute of Life Sciences
- School of Science and Technology
- Ahmedabad University
- Ahmedabad-380009
- India
| | - Sanjay Singh
- Institute of Life Sciences
- School of Science and Technology
- Ahmedabad University
- Ahmedabad-380009
- India
| | | | - Ajay Karakoti
- Institute of Life Sciences
- School of Science and Technology
- Ahmedabad University
- Ahmedabad-380009
- India
| | | | - Rishi Shanker
- Institute of Life Sciences
- School of Science and Technology
- Ahmedabad University
- Ahmedabad-380009
- India
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19
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Baer DR, Engelhard MH, Johnson GE, Laskin J, Lai J, Mueller K, Munusamy P, Thevuthasan S, Wang H, Washton N, Elder A, Baisch BL, Karakoti A, Kuchibhatla SVNT, Moon D. Surface characterization of nanomaterials and nanoparticles: Important needs and challenging opportunities. J Vac Sci Technol A 2013; 31:50820. [PMID: 24482557 PMCID: PMC3869349 DOI: 10.1116/1.4818423] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Accepted: 07/25/2013] [Indexed: 05/17/2023]
Abstract
This review examines characterization challenges inherently associated with understanding nanomaterials and the roles surface and interface characterization methods can play in meeting some of the challenges. In parts of the research community, there is growing recognition that studies and published reports on the properties and behaviors of nanomaterials often have reported inadequate or incomplete characterization. As a consequence, the true value of the data in these reports is, at best, uncertain. With the increasing importance of nanomaterials in fundamental research and technological applications, it is desirable that researchers from the wide variety of disciplines involved recognize the nature of these often unexpected challenges associated with reproducible synthesis and characterization of nanomaterials, including the difficulties of maintaining desired materials properties during handling and processing due to their dynamic nature. It is equally valuable for researchers to understand how characterization approaches (surface and otherwise) can help to minimize synthesis surprises and to determine how (and how quickly) materials and properties change in different environments. Appropriate application of traditional surface sensitive analysis methods (including x-ray photoelectron and Auger electron spectroscopies, scanning probe microscopy, and secondary ion mass spectroscopy) can provide information that helps address several of the analysis needs. In many circumstances, extensions of traditional data analysis can provide considerably more information than normally obtained from the data collected. Less common or evolving methods with surface selectivity (e.g., some variations of nuclear magnetic resonance, sum frequency generation, and low and medium energy ion scattering) can provide information about surfaces or interfaces in working environments (operando or in situ) or information not provided by more traditional methods. Although these methods may require instrumentation or expertise not generally available, they can be particularly useful in addressing specific questions, and examples of their use in nanomaterial research are presented.
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Affiliation(s)
- Donald R Baer
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Mark H Engelhard
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Grant E Johnson
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Julia Laskin
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Jinfeng Lai
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Karl Mueller
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Prabhakaran Munusamy
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | | | - Hongfei Wang
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Nancy Washton
- Pacific Northwest National Laboratory, EMSL, P.O. Box 999, Richland, Washington 99352
| | - Alison Elder
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - Brittany L Baisch
- Department of Environmental Medicine, University of Rochester, Rochester, New York
| | - Ajay Karakoti
- Battelle Science and Technology India, Pune, Maharashtra, India
| | | | - Daewon Moon
- Daegu Gyeongbuk Institute of Science and Technology, Daeju, Korea
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20
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Hirst SM, Karakoti A, Singh S, Self W, Tyler R, Seal S, Reilly CM. Bio-distribution and in vivo antioxidant effects of cerium oxide nanoparticles in mice. Environ Toxicol 2013; 28:107-118. [PMID: 21618676 DOI: 10.1002/tox.20704] [Citation(s) in RCA: 191] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 01/19/2011] [Accepted: 01/20/2011] [Indexed: 05/30/2023]
Abstract
Cerium oxide nanoparticles have oxygen defects in their lattice structure that enables them to act as a regenerative free radical scavenger in a physiological environment. We performed a comprehensive in vivo analysis of the biological distribution and antioxidant capabilities of nanoceria administered to mice perorally (PO), intravenously (IV), or intraperitoneally (IP) by dosing animals weekly for 2 or 5 weeks with 0.5 mg kg(-1) nanoceria. Next, we examined if nanoceria administration would decrease ROS production in mice treated with carbon tetrachloride (CCl(4)). Our results showed that the most extensive and cumulative nano-deposition was via IV and IP administered while PO administration showed mice excreted greater than 95% of their nanoceria within 24 h. Organ deposition for IV and IP mice was greatest in the spleen followed by the liver, lungs, and kidneys. Elimination for all administration routes was through feces. Nanoceria administration showed no overt toxicity, however, WBC counts were elevated with IV and IP administration. Our in vivo studies show that nanoceria administration to mice with induced liver toxicity (by CCl(4)) showed similar findings to mice treated with N-acetyl cystine (NAC), a common therapeutic to reduce oxidative stress. Taken together, our studies show that nanoceria remains deposited in tissues and may decrease ROS, thereby suggesting that cerium oxide nanoparticles may be a useful antioxidant treatment for oxidative stress.
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Affiliation(s)
- Suzanne Marie Hirst
- Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
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21
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Giri S, Karakoti A, Graham RP, Maguire JL, Reilly CM, Seal S, Rattan R, Shridhar V. Nanoceria: a rare-earth nanoparticle as a novel anti-angiogenic therapeutic agent in ovarian cancer. PLoS One 2013; 8:e54578. [PMID: 23382918 PMCID: PMC3561344 DOI: 10.1371/journal.pone.0054578] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 12/13/2012] [Indexed: 12/27/2022] Open
Abstract
Ovarian cancer (OvCa) is the fifth most common cause of death from all cancers among women in United Sates and the leading cause of death from gynecological malignancies. While most OvCa patients initially respond to surgical debulking and chemotherapy, 75% of patients later succumb to the disease. Thus, there is an urgent need to test novel therapeutic agents to counteract the high mortality rate associated with OvCa. In this context, we have developed and engineered Nanoceria (NCe), nanoparticles of cerium oxide, possessing anti-oxidant properties, to be used as a therapeutic agent in OvCa. We show for the first time that NCe significantly inhibited production of reactive oxygen species (ROS) in A2780 cells, attenuated growth factor (SDF1, HB-EGF, VEGF165 and HGF) mediated cell migration and invasion of SKOV3 cells, without affecting the cell proliferation. NCe treatment also inhibited VEGF165 induced proliferation, capillary tube formation, activation of VEGFR2 and MMP2 in human umbilical vascular endothelial cells (HUVEC). NCe (0.1 mg/kg body weigh) treatment of A2780 ovarian cancer cells injected intra-peritoneally in nude mice showed significant reduction (p<0.002) in tumor growth accompanied by decreased tumor cell proliferation as evident from reduced tumor size and Ki67 staining. Accumulation of NCe was found in tumors isolated from treated group using transmission electron microscopy (TEM) and inductively coupled plasma mass spectroscopy (ICP-MS). Reduction of the tumor mass was accompanied by attenuation of angiogenesis, as observed by reduced CD31 staining and specific apoptosis of vascular endothelial cells. Collectively, these results indicate that cerium oxide based NCe is a novel nanoparticle that can potentially be used as an anti-angiogenic therapeutic agent in ovarian cancer.
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Affiliation(s)
- Shailendra Giri
- Department of Experimental Pathology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ajay Karakoti
- Mechanical Materials Aerospace Eng, Advanced Materials Processing Analysis Center, Nanoscience Technology Center, University of Central Florida, Orlando, Florida, United States of America
| | - Rondell P. Graham
- Anatomic/Clinical Pathology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Jacie L. Maguire
- Department of Experimental Pathology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Christopher M. Reilly
- Via Virginia College of Osteopathic Medicine and Virginia-Maryland Regional College of Veterinary Medicine Virginia Tech, Blacksburg Virginia, United States of America
| | - Sudipta Seal
- Mechanical Materials Aerospace Eng, Advanced Materials Processing Analysis Center, Nanoscience Technology Center, University of Central Florida, Orlando, Florida, United States of America
- * E-mail: (VS); (RR); (SS)
| | - Ramandeep Rattan
- Women’s Health Services, Henry Ford Health System, Detroit, Michigan, United States of America
- * E-mail: (VS); (RR); (SS)
| | - Viji Shridhar
- Department of Experimental Pathology, Mayo Clinic College of Medicine, Mayo Clinic, Rochester, Minnesota, United States of America
- * E-mail: (VS); (RR); (SS)
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22
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Shah V, Shah S, Shah H, Rispoli FJ, McDonnell KT, Workeneh S, Karakoti A, Kumar A, Seal S. Antibacterial activity of polymer coated cerium oxide nanoparticles. PLoS One 2012; 7:e47827. [PMID: 23110109 PMCID: PMC3482233 DOI: 10.1371/journal.pone.0047827] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 09/17/2012] [Indexed: 01/19/2023] Open
Abstract
Cerium oxide nanoparticles have found numerous applications in the biomedical industry due to their strong antioxidant properties. In the current study, we report the influence of nine different physical and chemical parameters: pH, aeration and, concentrations of MgSO4, CaCl2, KCl, natural organic matter, fructose, nanoparticles and Escherichia coli, on the antibacterial activity of dextran coated cerium oxide nanoparticles. A least-squares quadratic regression model was developed to understand the collective influence of the tested parameters on the anti-bacterial activity and subsequently a computer-based, interactive visualization tool was developed. The visualization allows us to elucidate the effect of each of the parameters in combination with other parameters, on the antibacterial activity of nanoparticles. The results indicate that the toxicity of CeO2 NPs depend on the physical and chemical environment; and in a majority of the possible combinations of the nine parameters, non-lethal to the bacteria. In fact, the cerium oxide nanoparticles can decrease the anti-bacterial activity exerted by magnesium and potassium salts.
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Affiliation(s)
- Vishal Shah
- Department of Biology, Dowling College, Oakdake, New York, United States of America
- * E-mail: (VS); (S. Seal)
| | - Shreya Shah
- Department of Biology, Dowling College, Oakdake, New York, United States of America
| | - Hirsh Shah
- Department of Biology, Dowling College, Oakdake, New York, United States of America
| | - Fred J. Rispoli
- Department of Mathematics and Computer Science, Dowling College, Oakdale, New York, United States of America
| | - Kevin T. McDonnell
- Department of Mathematics and Computer Science, Dowling College, Oakdale, New York, United States of America
| | - Selam Workeneh
- Department of Biology, Southern University at New Orleans, New Orleans, Louisiana, United States of America
| | - Ajay Karakoti
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, Mechanical Materials Aerospace Eng, University of Central Florida, Orlando, Florida, United States of America
| | - Amit Kumar
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, Mechanical Materials Aerospace Eng, University of Central Florida, Orlando, Florida, United States of America
| | - Sudipta Seal
- Advanced Materials Processing Analysis Center, Nanoscience Technology Center, Mechanical Materials Aerospace Eng, University of Central Florida, Orlando, Florida, United States of America
- * E-mail: (VS); (S. Seal)
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23
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Sayle TXT, Inkson BJ, Karakoti A, Kumar A, Molinari M, Möbus G, Parker SC, Seal S, Sayle DC. Mechanical properties of ceria nanorods and nanochains; the effect of dislocations, grain-boundaries and oriented attachment. Nanoscale 2011; 3:1823-1837. [PMID: 21409243 DOI: 10.1039/c0nr00980f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We predict that the presence of extended defects can reduce the mechanical strength of a ceria nanorod by 70%. Conversely, the pristine material can deform near its theoretical strength limit. Specifically, atomistic models of ceria nanorods have been generated with full microstructure, including: growth direction, morphology, surface roughening (steps, edges, corners), point defects, dislocations and grain-boundaries. The models were then used to calculate the mechanical strength as a function of microstructure. Our simulations reveal that the compressive yield strengths of ceria nanorods, ca. 10 nm in diameter and without extended defects, are 46 and 36 GPa for rods oriented along [211] and [110] respectively, which represents almost 10% of the bulk elastic modulus and are associated with yield strains of about 0.09. Tensile yield strengths were calculated to be about 50% lower with associated yield strains of about 0.06. For both nanorods, plastic deformation was found to proceed via slip in the {001} plane with direction <110>--a primary slip system for crystals with the fluorite structure. Dislocation evolution for the nanorod oriented along [110] was nucleated via a cerium vacancy present at the surface. A nanorod oriented along [321] and comprising twin-grain boundaries with {111} interfacial planes was calculated to have a yield strength of about 10 GPa (compression and tension) with the grain boundary providing the vehicle for plastic deformation, which slipped in the plane of the grain boundary, with an associated <110> slip direction. We also predict, using a combination of atomistic simulation and DFT, that rutile-structured ceria is feasible when the crystal is placed under tension. The mechanical properties of nanochains, comprising individual ceria nanoparticles with oriented attachment and generated using simulated self-assembly, were found to be similar to those of the nanorod with grain-boundary. Images of the atom positions during tension and compression are shown, together with animations, revealing the mechanisms underpinning plastic deformation. For the nanochain, our simulations help further our understanding of how a crystallising ice front can be used to 'sculpt' ceria nanoparticles into nanorods via oriented attachment.
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Affiliation(s)
- Thi X T Sayle
- Dept. Engineering and Applied Science, Cranfield University, Defence Academy of the United Kingdom, Shrivenham, SN6 8LA, UK.
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Shirato N, Strader J, Kumar A, Vincent A, Zhang P, Karakoti A, Nacchimuthu P, Cho HJ, Seal S, Kalyanaraman R. Thickness dependent self limiting 1-D tin oxide nanowire arrays by nanosecond pulsed laser irradiation. Nanoscale 2011; 3:1090-1101. [PMID: 21180769 DOI: 10.1039/c0nr00689k] [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: 05/30/2023]
Abstract
Fast, sensitive and discriminating detection of hydrogen at room temperature is crucial for storage, transportation, and distribution of hydrogen as an energy source. One dimensional nanowires of SnO2 are potential candidates for improved H2 sensor performance. The single directional conducting continuous nanowires can decrease electrical noise, and their large active surface area could improve the response and recovery time of the sensor. In this work we discuss synthesis and characterization of nanowire arrays made using nanosecond ultraviolet wavelength (266 nm) laser interference processing of ultrathin SnO2 films on SiO2 substrates. The laser energy was chosen to be above the melting point of the films. The results show that the final nanowire formation is dominated by preferential evaporation as compared to thermocapillary flow. The nanowire height (and hence wire aspect ratio) increased with increasing initial film thickness h0 and with increasing laser energy density Eo. Furthermore, a self-limiting effect was observed where-in the wire formation ceased at a specific final remaining thickness of SnO2 that was almost independent of h0 for a given Eo. To understand these effects, finite element modeling of the nanoscale laser heating was performed. This showed that the temperature rise under laser heating was a strong non-monotonic function of film thickness. As a result, the preferential evaporation rate varies as wire formation occurs, eventually leading to a shut-off of evaporation at a characteristic thickness. This results in the stoppage of wire formation. This combination of nanosecond pulsed laser experiments and thermal modeling shows that several unique synthesis approaches can be utilized to control the nanowire characteristics.
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Affiliation(s)
- N Shirato
- Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA
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25
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Singh S, Kumar A, Karakoti A, Seal S, Self WT. Unveiling the mechanism of uptake and sub-cellular distribution of cerium oxide nanoparticles. Mol Biosyst 2010; 6:1813-20. [PMID: 20697616 DOI: 10.1039/c0mb00014k] [Citation(s) in RCA: 131] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cerium oxide nanoparticles (CNPs) have been recently studied for their potent superoxide scavenging properties in both cell and animal model systems. Data from these model systems have shown that exposure of cells to CNPs results in the protection against reactive oxygen species (ROS). Despite these exciting findings, very little is known regarding the uptake or subcellular distribution of these nanomaterials inside cells. In this study we utilized fluorophore (carboxyfluorescein) conjugated cerium oxide NPs (CCNPs) to study the mechanism of uptake and to elucidate the subcellular localization of CNPs using a keratinocyte model system. We observed rapid uptake (within 3 h) of CCNPs that was governed by energy-dependent, clathrin-mediated and caveolae-mediated endocytic pathways. We found CCNPs co-localized with mitochondria, lysosomes and endoplasmic reticulum as well as being abundant in the cytoplasm and the nucleus. Given the radical scavenging properties of cerium oxide and the widespread cellular disposition we observed, CNPs likely act as cellular antioxidants in multiple compartments of the cell imparting protection against a variety of oxidant injuries.
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Affiliation(s)
- Sanjay Singh
- Burnett School of Biomedical Science, College of Medicine, University of Central Florida, USA
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26
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Hirst S, Karakoti A, Tyler R, Sriranganathan N, Seal S, Reilly C. Bio-distribution and in vivo antioxidant properties of cerium oxide nanoparticles (87.26). The Journal of Immunology 2010. [DOI: 10.4049/jimmunol.184.supp.87.26] [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: 01/03/2023]
Abstract
Abstract
Cerium oxide nanoparticles have oxygen defects in their lattice structure that enable them to scavenge oxygen radicals. Recent reports have shown nanoceria to act a regenerative free radical scavenger in a physiological environment. The goal of our study was to perform a comprehensive analysis of the biological distribution and in vivo antioxidant capabilities of nanoceria. We examined three peroral (PO), intravenous (IV), and intraperitoneal (IP) administration routes along with deposition, clearance, histology and WBC counts in nanoceria administered mice. We also examined if nanoceria would decrease ROS production in mice treated with carbon tetrachloride (CCl4). As determined by inductively coupled plasma-mass spectrometry (ICP-MS), nanoceria organ deposition for IV and IP mice was greatest in the spleen followed by the liver, lungs, and kidneys. Elimination for all administration routes was through feces. Nanoceria distribution was confirmed with IVIS in vivo imaging, and deposition was confirmed with transmission electron microscopy (TEM). Nanoceria administration did not induce histopathology, however it did raise WBC counts. Nanoceria administration to mice with induced liver toxicity reduced liver 8-isoprostane, urine 8-OHdG, and plasma MDA levels markers of oxidative stress. Our studies show that nanoceria remains deposited in tissues and decreases ROS, suggesting that cerium oxide nanoparticles may be a useful antioxidant treatment for oxidative stress.
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Affiliation(s)
- Suzanne Hirst
- 1Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA
| | | | - Rom Tyler
- 1Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA
| | | | | | - Christopher Reilly
- 1Biomedical Sciences and Pathobiology, Virginia Tech, Blacksburg, VA
- 3Virgina College of Osteopathic Medicine, Blacksburg, VA
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Giri S, Rattan R, Karakoti A, Seal S, Shridhar V. Abstract C48: Antiangiogenic properties of rare earth nanoparticles: Implications in ovarian cancer. Cancer Res 2009. [DOI: 10.1158/0008-5472.fbcr09-c48] [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: 11/16/2022]
Abstract
Abstract
A substantial body of evidence suggests an association between vascular endothelial growth factor (VEGF) and the neovascularization that occurs with ovarian carcinogenesis. VEGF expression has been directly related to ascites accumulation. Phase II clinical trials in ovarian cancer using single-agent bevacizumab (a monoclonal antibody directed against VEGF) showed promising results, clearly highlighting the importance of anti-angiogenesis based-targeted therapies in ovarian cancer. One of the ways that VEGF mediates angiogenesis is by activating NADPH oxidase-ROS pathway. We have developed and engineered nanoparticles (NP) of cerium oxide (Nanoceria, NCe), a rare earth oxides, which have been tested for their ability to serve as free-radical scavengers to provide protection against chemical, biological, and radiological insults that promote the production of free radicals. Here we show for the first time that treatment of human umbilical vascular endothelial cells (HUVECs) with NCe resulted in inhibition of proliferation, capillary tube formation and VEGF165 induced activation of VEGFR2 and MMP2. Additionally, NCe treatment inhibited growth factor induced migration and invasion of ovarian cancer cells. Collectively, these results indicate that cerium oxide based NP could potentially be used as an antiangiogenic therapeutic agent in ovarian cancer.
Citation Information: Cancer Res 2009;69(23 Suppl):C48.
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29
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Deshpande S, Karakoti A, Londe G, Cho HJ, Seal S. Room temperature hydrogen detection using 1-D nanostructured tin oxide sensor. J Nanosci Nanotechnol 2007; 7:3354-3357. [PMID: 18019176 DOI: 10.1166/jnn.2007.872] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Room temperature sensing of hydrogen using randomly oriented tin oxide nanowires has been demonstrated successfully. The role of surface functionalization of nanowires with platinum catalyst in rapid hydrogen detection is also studied. These nanowires were successfully incorporated into a micro-electro-mechanical (MEMS) device. The device can successfully detect hydrogen gas (as low as 500 ppm) with response time as low as 10 sec. Effect of aspect ratio of the nanowires on diffusion of hydrogen molecules in the tin oxide nanowires is elucidated in detail.
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Affiliation(s)
- S Deshpande
- Advanced Materials Processing and Analysis Center, 4000, Central Florida Boulevard, Orlando, Fl 32816, USA
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