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Kundale SS, Kamble GU, Patil PP, Patil SL, Rokade KA, Khot AC, Nirmal KA, Kamat RK, Kim KH, An HM, Dongale TD, Kim TG. Review of Electrochemically Synthesized Resistive Switching Devices: Memory Storage, Neuromorphic Computing, and Sensing Applications. Nanomaterials (Basel) 2023; 13:1879. [PMID: 37368309 DOI: 10.3390/nano13121879] [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: 04/03/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023]
Abstract
Resistive-switching-based memory devices meet most of the requirements for use in next-generation information and communication technology applications, including standalone memory devices, neuromorphic hardware, and embedded sensing devices with on-chip storage, due to their low cost, excellent memory retention, compatibility with 3D integration, in-memory computing capabilities, and ease of fabrication. Electrochemical synthesis is the most widespread technique for the fabrication of state-of-the-art memory devices. The present review article summarizes the electrochemical approaches that have been proposed for the fabrication of switching, memristor, and memristive devices for memory storage, neuromorphic computing, and sensing applications, highlighting their various advantages and performance metrics. We also present the challenges and future research directions for this field in the concluding section.
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Affiliation(s)
- Somnath S Kundale
- Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India
| | - Girish U Kamble
- Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India
| | - Pradnya P Patil
- Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India
| | - Snehal L Patil
- Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India
| | - Kasturi A Rokade
- Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India
| | - Atul C Khot
- School of Electrical Engineering, Korea University, Anam-dong, Seoul 02841, Republic of Korea
| | - Kiran A Nirmal
- School of Electrical Engineering, Korea University, Anam-dong, Seoul 02841, Republic of Korea
| | - Rajanish K Kamat
- Department of Electronics, Shivaji University, Kolhapur 416004, India
- Department of Physics, Dr. Homi Bhabha State University, 15, Madam Cama Road, Mumbai 400032, India
| | - Kyeong Heon Kim
- Department of Convergence Electronic Engineering, Gyeongsang National University, Jinjudae-ro 501, Jinju 52828, Republic of Korea
| | - Ho-Myoung An
- Department of Electronics, Osan University, 45, Cheonghak-ro, Osan-si 18119, Republic of Korea
| | - Tukaram D Dongale
- Computational Electronics and Nanoscience Research Laboratory, School of Nanoscience and Biotechnology, Shivaji University, Kolhapur 416004, India
- School of Electrical Engineering, Korea University, Anam-dong, Seoul 02841, Republic of Korea
| | - Tae Geun Kim
- School of Electrical Engineering, Korea University, Anam-dong, Seoul 02841, Republic of Korea
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Quiñones Vélez G, Soto Nieves D, Castro Vázquez A, López-Mejías V. Polymorphic control in titanium dioxide particles. Nanoscale Adv 2023; 5:425-434. [PMID: 36756264 PMCID: PMC9846715 DOI: 10.1039/d2na00390b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 11/22/2022] [Indexed: 06/18/2023]
Abstract
The hydrolysis-condensation reaction of TiO2 was adapted to the phase inversion temperature (PIT)-nano-emulsion method as a low energy approach to gain control over the size and phase purity of the resulting metal oxide particles. Three different PIT-nano-emulsion syntheses were designed, each one intended to isolate high purity rutile, anatase, and brookite phase particles. Three different emulsion systems were prepared, with a pH of either strongly acidic (H2O : HNO3, pH ∼0.5), moderately acidic (H2O : isopropanol, pH ∼4.5), or alkaline (H2O : NaOH, pH ∼12). PIT-nano-emulsion syntheses of the amorphous TiO2 particles were conducted under these conditions, resulting in average particle diameter distributions of ∼140 d nm (strongly acidic), ∼60 d nm (moderately acidic), and ∼460 d nm (alkaline). Different thermal treatments were performed on the amorphous particles obtained from the PIT-nano-emulsion syntheses. Raman spectroscopy and powder X-ray diffraction (PXRD) were employed to corroborate that the thermally treated particles under H2O : HNO3 (at 850 °C), H2O : NaOH (at 400 °C), and H2O : isopropanol (at 200 °C) yielded highly-pure rutile, anatase, and brookite phases, respectively. Herein, an experimental approach based on the PIT-nano-emulsion method is demonstrated to synthesize phase-controlled TiO2 particles with high purity employing fewer toxic compounds, reducing the quantity of starting materials, and with a minimum energy input, particularly for the almost elusive brookite phase.
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Affiliation(s)
- Gabriel Quiñones Vélez
- Department of Chemistry, University of Puerto Rico Río Piedras San Juan Puerto Rico 00931 USA
- Crystallization Design Institute, Molecular Sciences Research Center, University of Puerto Rico San Juan 00926 Puerto Rico USA
| | - Diego Soto Nieves
- Department of Chemistry, University of Puerto Rico Río Piedras San Juan Puerto Rico 00931 USA
- Crystallization Design Institute, Molecular Sciences Research Center, University of Puerto Rico San Juan 00926 Puerto Rico USA
| | - Anushka Castro Vázquez
- Crystallization Design Institute, Molecular Sciences Research Center, University of Puerto Rico San Juan 00926 Puerto Rico USA
- Department of Accounting, University of Puerto Rico Río Piedras San Juan Puerto Rico 00931 USA
| | - Vilmalí López-Mejías
- Department of Chemistry, University of Puerto Rico Río Piedras San Juan Puerto Rico 00931 USA
- Crystallization Design Institute, Molecular Sciences Research Center, University of Puerto Rico San Juan 00926 Puerto Rico USA
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Chai YD, Pang YL, Lim S, Chong WC, Lai CW, Abdullah AZ. Recent Progress on Tailoring the Biomass-Derived Cellulose Hybrid Composite Photocatalysts. Polymers (Basel) 2022; 14:polym14235244. [PMID: 36501638 PMCID: PMC9736154 DOI: 10.3390/polym14235244] [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] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 12/03/2022] Open
Abstract
Biomass-derived cellulose hybrid composite materials are promising for application in the field of photocatalysis due to their excellent properties. The excellent properties between biomass-derived cellulose and photocatalyst materials was induced by biocompatibility and high hydrophilicity of the cellulose components. Biomass-derived cellulose exhibited huge amount of electron-rich hydroxyl group which could promote superior interaction with the photocatalyst. Hence, the original sources and types of cellulose, synthesizing methods, and fabrication cellulose composites together with applications are reviewed in this paper. Different types of biomasses such as biochar, activated carbon (AC), cellulose, chitosan, and chitin were discussed. Cellulose is categorized as plant cellulose, bacterial cellulose, algae cellulose, and tunicate cellulose. The extraction and purification steps of cellulose were explained in detail. Next, the common photocatalyst nanomaterials including titanium dioxide (TiO2), zinc oxide (ZnO), graphitic carbon nitride (g-C3N4), and graphene, were introduced based on their distinct structures, advantages, and limitations in water treatment applications. The synthesizing method of TiO2-based photocatalyst includes hydrothermal synthesis, sol-gel synthesis, and chemical vapor deposition synthesis. Different synthesizing methods contribute toward different TiO2 forms in terms of structural phases and surface morphology. The fabrication and performance of cellulose composite catalysts give readers a better understanding of the incorporation of cellulose in the development of sustainable and robust photocatalysts. The modifications including metal doping, non-metal doping, and metal-organic frameworks (MOFs) showed improvements on the degradation performance of cellulose composite catalysts. The information and evidence on the fabrication techniques of biomass-derived cellulose hybrid photocatalyst and its recent application in the field of water treatment were reviewed thoroughly in this review paper.
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Affiliation(s)
- Yi Ding Chai
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Yean Ling Pang
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Correspondence: or ; Tel.: +603-9086-0288; Fax: +603-9019-8868
| | - Steven Lim
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Woon Chan Chong
- Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
- Centre for Photonics and Advanced Materials Research, Universiti Tunku Abdul Rahman, Kajang 43000, Malaysia
| | - Chin Wei Lai
- Nanotechnology & Catalysis Research Centre (NANOCAT), Institute for Advanced Studies, University of Malaya, Kuala Lumpur 50603, Malaysia
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Liaqat M, Riaz KN, Iqbal T, Nabi G, Rizwan M, Shakil M. Fabrication of novel BiVO 4/Bi 2O 3heterostructure with superior visible light induced photocatalytic properties. Nanotechnology 2022; 34:015711. [PMID: 36195011 DOI: 10.1088/1361-6528/ac9738] [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] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Heterostructure BiVO4/Bi2O3nanocomposites with enhanced visible light activity are effectively synthesized through an easiest and single step hydrothermal route, using bismuth subnitrate and ammonium meta-vanadate as main raw materials in existence of citric acid. The phase and surface structure, topography and optical properties of synthesized composites are characterized by XRD, SEM, EDX, FTIR, UV-Visible and PL spectroscopy. It was found that 5%BiVO4/Bi2O3(BOBV-5) nanocomposite exhibit excellent photocatalytic performance for rhodamine B dye degradation and tetracyclic under irradiation of visible light as compared to single component i.e. BiVO4. The increased photocatalytic activity should be ascribed for making p-n heterojunction among p-type Bi2O3and n-type BiVO4. This p-n heterojunction successfully reduce the recombination of photogenerated charge carriers. Furthermore, the BOBV-5 novel photocatalyst shows good stability in constructive five cycles and photocatalytic activity is best for conquering photo corrosion of a photocatalysts. To explain charge migration route, whole photocatalytic mechanism was described in terms of energy band structures. Furthermore, the present work is helpful effort for design of new visible light photocatalytic materials with heterojunction structures.
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Affiliation(s)
- Maira Liaqat
- Department of Physics, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan
| | | | - Tahir Iqbal
- Department of Physics, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan
| | - Ghulam Nabi
- Department of Physics, University of Gujrat, Hafiz Hayat Campus, Gujrat, 50700, Pakistan
| | - Muhammad Rizwan
- School of Physical Sciences, University of the Punjab, Lahore, Pakistan
| | - M Shakil
- Institute of Physics, The Islamia University of Bahawalpur, Pakistan
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Bonesio MDR, Nogueira FGE, Mancini DT, Ribeiro LS, Ramalho TC. A simple methodology for obtaining novel heterojunction photocatalyst NiO/δ-FeOOH: a theoretical and experimental study. J IRAN CHEM SOC 2022. [DOI: 10.1007/s13738-022-02676-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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Polyakov EV, Tsukanov RR, Buldakova LY, Kuznetsova YV, Volkov IV, Zhukov VP, Maksimova MA, Dmitriev AV, Baklanova IV, Lipina OA, Tyutyunnik AP. Chemical Bath Precipitation and Properties of β-Ni(OH)2 Films Prepared in Aqueous Ammoniac Solutions. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622060195] [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: 11/23/2022]
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Alizadeh S, Takjoo R. Preparation of nano-TiO 2 sensitized by new ruthenium complex for photocatalytic degradation of methylene blue under visible light irradiation. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2070743] [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: 10/18/2022]
Affiliation(s)
- Shabnam Alizadeh
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Reza Takjoo
- Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
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Lang J, Takahashi K, Kubo M, Shimada M. Preparation of TiO2-CNT-Ag Ternary Composite Film with Enhanced Photocatalytic Activity via Plasma-Enhanced Chemical Vapor Deposition. Catalysts 2022; 12:508. [DOI: 10.3390/catal12050508] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
In this study, a TiO2-CNT-Ag ternary composite film was successfully synthesized using the plasma-enhanced chemical vapor deposition method by simultaneously feeding a carbon nanotube (CNT)/Ag suspension and titanium tetraisopropoxide gas. The prepared TiO2-CNT-Ag film was characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and ultraviolet-visible spectroscopy. Moreover, the Ag/Ti ratio of the film was confirmed using an inductivity-coupled plasma optical emission spectrometer. The performance of the TiO2-composite film for the degradation of rhodamine 6G under simulated solar light irradiation was evaluated. The rate constant of the prepared TiO2-CNT-Ag for rhodamine 6G degradation was approximately 1.8 times greater than that of prepared TiO2. This result indicates that the addition of CNT and Ag significantly improved the photocatalytic activity of the prepared films.
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Kotbi A, Imran M, Kaja K, Rahaman A, Ressami EM, Lejeune M, Lakssir B, Jouiad M, Llobet E. Graphene and g-C3N4-Based Gas Sensors. Journal of Nanotechnology 2022; 2022:1-20. [DOI: 10.1155/2022/9671619] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The efficient monitoring of the environment is currently gaining a continuous growing interest in view of finding solutions for the global pollution issues and their associated climate change. In this sense, two-dimensional (2D) materials appear as one of highly attractive routes for the development of efficient sensing devices due, in particular, to the interesting blend of their superlative properties. For instance, graphene (Gr) and graphitic carbon nitride g-C3N4 (g-CN) have specifically attracted great attention in several domains of sensing applications owing to their excellent electronic and physical-chemical properties. Despite the high potential they offer in the development and fabrication of high-performance gas-sensing devices, an exhaustive comparison between Gr and g-CN is not well established yet regarding their electronic properties and their sensing performances such as sensitivity and selectivity. Hence, this work aims at providing a state-of-the-art overview of the latest experimental advances in the fabrication, characterization, development, and implementation of these 2D materials in gas-sensing applications. Then, the reported results are compared to our numerical simulations using density functional theory carried out on the interactions of Gr and g-CN with some selected hazardous gases’ molecules such as NO2, CO2, and HF. Our findings conform with the superior performances of the g-CN regarding HF detection, while both g-CN and Gr show comparable detection performances for the remaining considered gases. This allows suggesting an outlook regarding the future use of these 2D materials as high-performance gas sensors.
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Lie KR, Samuel AO, Hasanah AN. Molecularly imprinted mesoporous silica: potential of the materials, synthesis and application in the active compound separation from natural product. Chem Pap 2022. [DOI: 10.1007/s11696-022-02074-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Pitiphattharabun S, Sato N, Panomsuwan G, Jongprateep O. Electrocatalytic Properties of a BaTiO3/MWCNT Composite for Citric Acid Detection. Catalysts 2022; 12:49. [DOI: 10.3390/catal12010049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Although barium titanate (BaTiO3) shows prominent dielectric properties for fabricating electronic devices, its utilization in electrochemical applications is limited. Thus, this study examined the potential of a BaTiO3-based composite in the detection of a food additive, i.e., citric acid. First, a submicron-scale BaTiO3 powder was synthesized using the solution combustion method. Then, a BaTiO3/multiwalled carbon nanotube (MWCNT) composite was hydrothermally synthesized at BaTiO3:MWCNT mass ratios of 1:1 and 2:1. This composite was used as a working electrode in a nonenzymatic sensor to evaluate its electrocatalytic activity. Cyclic voltammetric measurements revealed that the BaTiO3/MWCNT composite (2:1) exhibited the highest electrocatalytic activity. Reduction reactions were observed at applied voltages of approximately 0.02 and −0.67 V, whereas oxidation reactions were detected at −0.65 and 0.47 V. With acceptable sensitivity, decent selectivity, and fair stability, the BaTiO3/MWCNT composite (2:1) showed good potential for citric acid detection.
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Abstract
Purpose
Renewable energy alternatives and nanoscale materials have gained huge attention in recent years due to the problems associated with fossil fuels. The recyclable battery is one of the recent developments to address the energy requirement issues. In this work, the development of nanoscale materials is focused on using green synthesis methods to address the energy requirements of hybrid electric vehicles.
Design/methodology/approach
The current research focuses on developing metal oxide nanoscale materials (NANO-SMs). The Zno-Aloe vera NANO-SM is prepared using the green synthesis method. The developed nanoscale materials are characterized using analysis methods like FESEM, TEM, XRD and FTIR.
Findings
The average size of ZnO-Aloe vera mono-crystalline was recorded as 60–70 nm/Hexagonal shape. The nanoscale materials are used for the detection of LPG gases. The sensitivity observed was 48%. The response time and recovery time were recorded as 8–10 s and 230–250 s, respectively. The average size of SnO2-green papaya leaves poly-crystalline was recorded as 10–20 nm/powder form.
Originality/value
Nanoscale materials are developed using green synthesis methods for hybrid vehicle applications. The nanoscale materials are used for the detection of harmful gases in hybrid vehicles.
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Zhang J, Zhang H, Li W, Yang L, Wu H, Mao N. Photocatalytic Properties of a Novel Keratin char-TiO2 Composite Films Made through the Calcination of Wool Keratin Coatings Containing TiO2 Precursors. Catalysts 2021; 11:1366. [DOI: 10.3390/catal11111366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, the photocatalytic properties of novel keratin char-TiO2 composite films, made through the calcination of wool keratin coatings containing TiO2 precursors at 400 °C, were investigated for the photodegradation of organic contaminants under visible light irradiation. Its structural characteristics and photocatalytic performance were systematically examined. It was shown that a self-cleaning hydrophobic keratin char-TiO2 composite film containing meso- and micro-pores was formed after the keratin—TiO2 precursors coating was calcined. In comparison with calcinated TiO2 films, the keratin char-TiO2 composite films doped with the elements of C, N, and S from keratins resulted in decreased crystallinity and a larger water contact angle. The bandgap of the char-TiO2 composite films increased slightly from 3.26 to 3.32 eV, and its separation of photogenerated charge carriers was inhibited to a certain degree. However, it exhibited higher photodegradation efficiency to methyl blue (MB) effluents than the pure calcinated TiO2 films. This was mainly because of its special porous structure, large water contact angle, and high adsorption energy towards organic pollutants, confirmed by the density functional theory calculations. The main active species were 1O2 radicals in the MB photodegradation process.
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Zahid AH, Han Q. A review on the preparation, microstructure, and photocatalytic performance of Bi 2O 3 in polymorphs. Nanoscale 2021; 13:17687-17724. [PMID: 34734945 DOI: 10.1039/d1nr03187b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In recent years, the semiconductor bismuth oxide (Bi2O3) has attracted increasing attention as a potential visible-light-driven photocatalyst due to its simple composition, relatively narrow bandgap (2.2-2.8 eV), and high oxidation ability with deep valence band levels. Owing to the symmetry of its unit cell, Bi2O3 exists in more than one crystal form and exhibits phase-dependent photocatalytic properties. However, the phase-selective synthesis of Bi2O3 is a complex process, and its phase transformation usually occurs in a wide temperature range. Therefore, the development of Bi2O3 phases with a controllable microstructure and good photocatalytic properties is a great challenge. Hundreds of articles have been reported on the phase-selective synthesis and photocatalytic performance of Bi2O3. However, an interacting and critical review has rarely been reported, and thus it is essential to fill the gap in the literature. In this review, the phase-dependent photocatalytic performance of Bi2O3 is presented in detail. The phase-selective synthesis and temperature-dependent phase stability of highly active Bi2O3 are explored. The phase junction in Bi2O3 is reviewed, and the future perspective with an outlook on contemporary challenges is provided finally.
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Affiliation(s)
- Abdul Hannan Zahid
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, PR China.
| | - Qiaofeng Han
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu, PR China.
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Dell’Edera M, Lo Porto C, De Pasquale I, Petronella F, Curri ML, Agostiano A, Comparelli R. Photocatalytic TiO2-based coatings for environmental applications. Catal Today 2021. [DOI: 10.1016/j.cattod.2021.04.023] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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16
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Ahmad MS, Ab Rahim MH, Alqahtani TM, Witoon T, Lim JW, Cheng CK. A review on advances in green treatment of glycerol waste with a focus on electro-oxidation pathway. Chemosphere 2021; 276:130128. [PMID: 33714877 DOI: 10.1016/j.chemosphere.2021.130128] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 12/12/2020] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
Over the past decades, research efforts are being devoted into utilizing the biomass waste as a major source of green energy to maintain the economic, environmental, and social sustainability. Specifically, there is an emerging consensus on the significance of glycerol (an underutilised waste from biodiesel industry) as a cheap, non-toxic, and renewable source for valuable chemicals synthesis. There are numerous methods enacted to convert this glycerol waste to tartronic acid, mesoxalic acid, glyceraldehyde, dihydroxyacetone, oxalic acid and so on. Among these, the green electro-oxidation technique is one of the techniques that possesses potential for industrial application due to advantages such as non-toxicity process, fast response, and lower energy consumption. The current review covers the general understanding on commonly used techniques for alcohol (C1 & C2) conversion, with a specific insight on glycerol (C3) electro-oxidation (GOR). Since catalysts are the backbone of chemical reaction, they are responsible for the overall economy prospect of any processes. To this end, a comprehensive review on catalysts, which include noble metals, non-noble metals, and non-metals anchored over various supports are incorporated in this review. Moreover, a fundamental insight into the development of future electrocatalysts for glycerol oxidation along with products analysis is also presented.
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Affiliation(s)
- Muhammad Sheraz Ahmad
- Department of Chemical Engineering, College of Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300, Gambang, Pahang, Malaysia
| | - Mohd Hasbi Ab Rahim
- Faculty of Industrial Sciences and Technology, Universiti Malaysia Pahang, Malaysia
| | | | - Thongthai Witoon
- Department of Chemical Engineering, Kasetsart University, Bangkok, Thailand
| | - Jun-Wei Lim
- School of Chemical Sciences, Universiti Teknologi PETRONAS, Tronoh, Perak, Malaysia
| | - Chin Kui Cheng
- Department of Chemical Engineering, College of Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
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Shukla K, Agarwalla S, Duraiswamy S, Gupta RK. Recent advances in heterogeneous micro-photoreactors for wastewater treatment application. Chem Eng Sci 2021. [DOI: 10.1016/j.ces.2021.116511] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Davarazar M, Kamali M, Lopes I. Engineered nanomaterials for (waste)water treatment - A scientometric assessment and sustainability aspects. NanoImpact 2021; 22:100316. [PMID: 35559973 DOI: 10.1016/j.impact.2021.100316] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 10/21/2020] [Revised: 04/07/2021] [Accepted: 04/07/2021] [Indexed: 06/15/2023]
Abstract
Application of nanomaterials for the treatment of effluents originated from various industrial and non-industrial sources, has been rapidly developed in recent decades. In this situation, there is a need for conclusive studies to identify the current status of the knowledge in this field and to promote the commercialization of such technologies by providing recommendations for future studies. In the present manuscript, a scientometric assessment on the progress made in this field has been performed and the results have been organized and discussed in terms of science statistics, research hotspots and trends, as well as the relevant sustainability aspects. Based on a set of keywords, identified through a pre-literature analysis, a total of 6539 documents were retrieved from the Web of Science (WoS) database and analyzed to achieve the main goals of this study. The results demonstrate that the studies in this field have been initiated since the beginning of the 2000s but were mainly performed in lab and pilot scales. Also, China and Iran were identified as the most contributing countries in this scientific area in terms of the number of publications. Among various types of engineered nanomaterials (ENMs), there has been especial attention for the application of iron-based nanomaterials as well as carbonaceous structures (such as graphene oxide and biochar). Besides, there are not still strong collaborations formed among researchers in this area worldwide. Regarding the research hotspots, the synthesis of green and sustainable nanomaterials (e.g., biosynthesis approaches) has received attention in recent years. The results can also demonstrate that the most widely studied pathway for the removal of pollutants from (waste)waters involves the adsorption of the pollutants using ENMs. Treatment of contaminants of emerging concern (CECs) as well as exploring the mechanisms involved in the treatment of contaminated (waste)waters using ENMs and the possible by-products are considered the current trends in the literature. Regarding the sustainability aspects of ENMs for (waste)water treatment, the results achieved in this study calls for in-depth sustainability studies, which consider parameters such as economic, environmental, and social aspects of nanomaterials utilization for (waste)water treatment purposes, besides the technical parameters, to push transferring such technologies from lab and pilot scales to large and real-scale applications.
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Affiliation(s)
- Mahsa Davarazar
- Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
| | - Mohammadreza Kamali
- Process and Environmental Technology Lab, Department of Chemical Engineering, KU Leuven, 2860 Sint-Katelijne-Waver, Belgium; CESAM - Center of Environmental and Marine Studies & Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
| | - Isabel Lopes
- Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; CESAM - Center of Environmental and Marine Studies & Department of Biology, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
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Lettieri S, Pavone M, Fioravanti A, Santamaria Amato L, Maddalena P. Charge Carrier Processes and Optical Properties in TiO 2 and TiO 2-Based Heterojunction Photocatalysts: A Review. Materials (Basel) 2021; 14:ma14071645. [PMID: 33801646 PMCID: PMC8036967 DOI: 10.3390/ma14071645] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [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: 02/11/2021] [Revised: 03/19/2021] [Accepted: 03/23/2021] [Indexed: 02/07/2023]
Abstract
Photocatalysis based technologies have a key role in addressing important challenges of the ecological transition, such as environment remediation and conversion of renewable energies. Photocatalysts can in fact be used in hydrogen (H2) production (e.g., via water splitting or photo-reforming of organic substrates), CO2 reduction, pollution mitigation and water or air remediation via oxidation (photodegradation) of pollutants. Titanium dioxide (TiO2) is a “benchmark” photocatalyst, thanks to many favorable characteristics. We here review the basic knowledge on the charge carrier processes that define the optical and photophysical properties of intrinsic TiO2. We describe the main characteristics and advantages of TiO2 as photocatalyst, followed by a summary of historical facts about its application. Next, the dynamics of photogenerated electrons and holes is reviewed, including energy levels and trapping states, charge separation and charge recombination. A section on optical absorption and optical properties follows, including a discussion on TiO2 photoluminescence and on the effect of molecular oxygen (O2) on radiative recombination. We next summarize the elementary photocatalytic processes in aqueous solution, including the photogeneration of reactive oxygen species (ROS) and the hydrogen evolution reaction. We pinpoint the TiO2 limitations and possible ways to overcome them by discussing some of the “hottest” research trends toward solar hydrogen production, which are classified in two categories: (1) approaches based on the use of engineered TiO2 without any cocatalysts. Discussed topics are highly-reduced “black TiO2”, grey and colored TiO2, surface-engineered anatase nanocrystals; (2) strategies based on heterojunction photocatalysts, where TiO2 is electronically coupled with a different material acting as cocatalyst or as sensitizer. Examples discussed include TiO2 composites or heterostructures with metals (e.g., Pt-TiO2, Au-TiO2), with other metal oxides (e.g., Cu2O, NiO, etc.), direct Z-scheme heterojunctions with g-C3N4 (graphitic carbon nitride) and dye-sensitized TiO2.
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Affiliation(s)
- Stefano Lettieri
- Institute of Applied Sciences and Intelligent Systems “E. Caianiello”, Consiglio Nazionale delle Ricerche (CNR-ISASI), Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy
- Correspondence: ; Tel.: +39-081676809
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
| | - Ambra Fioravanti
- Institute of Science and Technology for Sustainable Energy and Mobility, Consiglio Nazionale delle Ricerche (CNR-STEMS), Via Canal Bianco 28, 44124 Ferrara, Italy;
| | | | - Pasqualino Maddalena
- Department of Physics “E. Pancini”, University of Naples “Federico II”, Complesso Universitario di Monte S. Angelo, Via Cupa Cintia 21, 80126 Napoli, Italy;
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Yanushevska OI, Vlasenko NV, Telbis GM, Leonenko EV, Didenko OZ, Prozorovich VG, Ivanets AI, Dontsova TA. Acid–base and photocatalytic properties of TiO2-based nanomaterials. Appl Nanosci 2021. [DOI: 10.1007/s13204-021-01709-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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21
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Mahfooz-ur-Rehman, Waseem M, Rehman W, Hussain R, Hussain S, Haq S, Anis-ur-Rehman M. Evaluation of structural, electrical and magnetic properties of nanosized unary, binary and ternary particles of Fe3O4, SnO2 and TiO2. Chem Pap 2021. [DOI: 10.1007/s11696-020-01444-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Hui KC, Suhaimi H, Sambudi NS. Electrospun-based TiO 2 nanofibers for organic pollutant photodegradation: a comprehensive review. REV CHEM ENG 2020; 0:000010151520200022. [DOI: 10.1515/revce-2020-0022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Abstract
Titanium dioxide (TiO2) is commonly used as a photocatalyst in the removal of organic pollutants. However, weaknesses of TiO2 such as fast charge recombination and low visible light usage limit its industrial application. Furthermore, photocatalysts that are lost during the treatment of pollutants create the problem of secondary pollutants. Electrospun-based TiO2 fiber is a promising alternative to immobilize TiO2 and to improve its performance in photodegradation. Some strategies have been employed in fabricating the photocatalytic fibers by producing hollow fibers, porous fibers, composite TiO2 with magnetic materials, graphene oxide, as well as doping TiO2 with metal. The modification of TiO2 can improve the absorption of TiO2 to the visible light area, act as an electron acceptor, provide large surface area, and promote the phase transformation of TiO2. The improvement of TiO2 properties can enhance carrier transfer rate which reduces the recombination and promotes the generation of radicals that potentially degrade organic pollutants. The recyclability of fibers, calcination effect, photocatalytic reactors used, operation parameters involved in photodegradation as well as the commercialization potential of TiO2 fibers are also discussed in this review.
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Bu Y, Zhang L, Ma D, Zhuge F. Low-Temperature Synthesis of Micro–Mesoporous TiO2–SiO2 Composite Film Containing Fe–N Co-Doped Anatase Nanocrystals for Photocatalytic NO Removal. Catal Letters 2021. [DOI: 10.1007/s10562-020-03466-8] [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: 10/22/2022]
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Zhang X, Wang X, Meng J, Liu Y, Ren M, Guo Y, Yang Y. Robust Z-scheme g-C3N4/WO3 heterojunction photocatalysts with morphology control of WO3 for efficient degradation of phenolic pollutants. Sep Purif Technol 2021; 255:117693. [DOI: 10.1016/j.seppur.2020.117693] [Citation(s) in RCA: 27] [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: 12/27/2022]
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Mouele ESM, Ngqoloda S, Pescetelli S, Di Carlo A, Dinu M, Vladescu A, Parau AC, Agresti A, Braic M, Arendse CJ, Petrik LF. Spin Coating Immobilisation of C-N-TiO2 Co-Doped Nano Catalyst on Glass and Application for Photocatalysis or as Electron Transporting Layer for Perovskite Solar Cells. Coatings 2020; 10:1029. [DOI: 10.3390/coatings10111029] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Producing active thin films coated on supports resolves many issues of powder-based photo catalysis and energy harvesting. In this study, thin films of C-N-TiO2 were prepared by dynamic spin coating of C-N-TiO2 sol-gel on glass support. The effect of spin speed and sol gel precursor to solvent volume ratio on the film thickness was investigated. The C-N-TiO2-coated glass was annealed at 350 °C at a ramping rate of 10 °C/min with a holding time of 2 hours under a continuous flow of dry N2. The C-N-TiO2 films were characterised by profilometry analysis, light microscopy (LM), and scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS). The outcomes of this study proved that a spin coating technique followed by an annealing process to stabilise the layer could be used for immobilisation of the photo catalyst on glass. The exposure of C-N-TiO2 films to UV radiation induced photocatalytic decolouration of orange II (O.II) dye. The prepared C-N-TiO2 films showed a reasonable power conversion efficiency average (PCE of 9%) with respect to the reference device (15%). The study offers a feasible route for the engineering of C-N-TiO2 films applicable to wastewater remediation processes and energy harvesting in solar cell technologies.
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Varnagiris S, Urbonavicius M, Sakalauskaite S, Daugelavicius R, Pranevicius L, Lelis M, Milcius D. Floating TiO 2 photocatalyst for efficient inactivation of E. coli and decomposition of methylene blue solution. Sci Total Environ 2020; 720:137600. [PMID: 32135289 DOI: 10.1016/j.scitotenv.2020.137600] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [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: 12/05/2019] [Revised: 02/14/2020] [Accepted: 02/25/2020] [Indexed: 06/10/2023]
Abstract
The anatase phase TiO2 films with nanocrystalline structure were successfully deposited on a water-floating non-expanded polystyrene (PS) beads via magnetron sputtering. The combination of UVB light and PS beads with TiO2 film was used for decomposition of methylene blue as well as inactivation tests for intact and EDTA-treated Escherichia coli bacteria. Crystal structure, elemental composition, elemental mapping, surface morphology and chemical bonds of TiO2 film were investigated. E. coli inactivation experiments showed that such floating photocatalyst could destroy >90% bacteria in 45 min under UVB irradiation. Results demonstrated that combination of TiO2 and UVB light leads to disruption of the outer membrane which causes effective inactivation of E. coli bacteria.
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Affiliation(s)
- Sarunas Varnagiris
- Center for Hydrogen Energy Technologies, Lithuanian Energy Institute, Kaunas, Lithuania.
| | - Marius Urbonavicius
- Center for Hydrogen Energy Technologies, Lithuanian Energy Institute, Kaunas, Lithuania
| | - Sandra Sakalauskaite
- Department of Biochemistry, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | - Rimantas Daugelavicius
- Department of Biochemistry, Faculty of Natural Sciences, Vytautas Magnus University, Kaunas, Lithuania
| | | | - Martynas Lelis
- Center for Hydrogen Energy Technologies, Lithuanian Energy Institute, Kaunas, Lithuania
| | - Darius Milcius
- Center for Hydrogen Energy Technologies, Lithuanian Energy Institute, Kaunas, Lithuania
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27
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Pant, Park, Park. Recent Advances in TiO2 Films Prepared by Sol-gel Methods for Photocatalytic Degradation of Organic Pollutants and Antibacterial Activities. Coatings 2019; 9:613. [DOI: 10.3390/coatings9100613] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Photocatalysis has recently emerged as an advanced, green, and eco-friendly process for the treatment of wastewater and air, and antimicrobial disinfection applications. In this context, TiO2 nanostructures have been shown to be the prominent photocatalyst candidates due to their low cost, non-toxicity, and ease of fabrication. This review highlights the investigation and development of TiO2 photocatalyst film by sol-gel method with special emphasis on the photodecolorization of synthetic dyes and antibacterial activities. Furthermore, various synthesis methods for the preparation of TiO2 films and their advantages, as well as limitations, are summarized. Finally, recent advances in TiO2 films by sol-gel method for dye degradation and antibacterial activities, challenges, and future perspective are discussed.
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Vahl A, Dittmann J, Jetter J, Veziroglu S, Shree S, Ababii N, Lupan O, Aktas OC, Strunskus T, Quandt E, Adelung R, Sharma SK, Faupel F. The impact of O 2/Ar ratio on morphology and functional properties in reactive sputtering of metal oxide thin films. Nanotechnology 2019; 30:235603. [PMID: 30780141 DOI: 10.1088/1361-6528/ab0837] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Morphology is a critical parameter for various thin film applications, influencing properties like wetting, catalytic performance and sensing efficiency. In this work, we report on the impact of oxygen partial flow on the morphology of ceramic thin films deposited by pulsed DC reactive magnetron sputtering. The influence of O2/Ar ratio was studied on three different model systems, namely Al2O3, CuO and TiO2. The availability of oxygen during reactive sputtering is a key parameter for a versatile tailoring of thin film morphology over a broad range of nanostructures. TiO2 thin films with high photocatalytic performance (up to 95% conversion in 7 h) were prepared, exhibiting a network of nanoscopic cracks between columnar anatase structures. In contrast, amorphous thin films without such crack networks and with high resiliency to crystallization even up to 950 °C were obtained for Al2O3. Finally, we report on CuO thin films with well aligned crystalline nanocolumns and outstanding gas sensing performance for volatile organic compounds as well as hydrogen gas, showing gas responses up to 35% and fast response in the range of a few seconds.
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Affiliation(s)
- A Vahl
- Institute for Materials Science-Chair for Multicomponent Materials, Faculty of Engineering, Kiel University, Kaiserstraße 2, D-24143 Kiel, Germany
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29
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Zhao Y, Wang Y, Xiao G, Su H. Fabrication of biomaterial/TiO2 composite photocatalysts for the selective removal of trace environmental pollutants. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2019.02.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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30
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Marien CBD, Le Pivert M, Azaïs A, M'Bra IC, Drogui P, Dirany A, Robert D. Kinetics and mechanism of Paraquat's degradation: UV-C photolysis vs UV-C photocatalysis with TiO 2/SiC foams. J Hazard Mater 2019; 370:164-171. [PMID: 29910037 DOI: 10.1016/j.jhazmat.2018.06.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 05/28/2018] [Accepted: 06/03/2018] [Indexed: 06/08/2023]
Abstract
In this study, the photolytic and photocatalytic removal of the herbicide paraquat is investigated under UV-C (254 nm). For photocatalytic experiments, SiC foams were used with P25-TiO2 nanoparticles deposited by dip-coating. The foams were characterized by scanning electron microscopy and paraquat's degradation under UV-C photolysis or photocatalysis, followed by UV-vis spectroscopy, total organic carbon analyzer, LC-MS and ion chromatography. After 3 h of reactions by photolysis and photocatalysis, 4% and 91% of TOC removal were observed. An analysis of degradation by-products showed a similar degradation pathway with pyridinium ions observed by LC/MS and carboxylic acids (succinate, acetate, oxalate and formate) detected by ion chromatography. In conclusion, these two different photo-degradation processes are able to remove paraquat and produce similar by-products. However, the kinetics of degradation is rather slow during photolysis and it is recommended to combine the UV-C lightning with a TiO2 photocatalyst to improve the mineralization rate.
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Affiliation(s)
- Cédric B D Marien
- Institut national de la recherche scientifique (INRS - Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec city, G1K 9A9, QC, Canada; Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS-UMR7515-University of Strasbourg, Saint-Avold Antenna, Université de Lorraine, 12 rue Victor Demange, 57500, Saint-Avold, France
| | - Marie Le Pivert
- Institut national de la recherche scientifique (INRS - Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec city, G1K 9A9, QC, Canada
| | - Antonin Azaïs
- Institut national de la recherche scientifique (INRS - Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec city, G1K 9A9, QC, Canada
| | - Ignace Christian M'Bra
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS-UMR7515-University of Strasbourg, Saint-Avold Antenna, Université de Lorraine, 12 rue Victor Demange, 57500, Saint-Avold, France
| | - Patrick Drogui
- Institut national de la recherche scientifique (INRS - Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec city, G1K 9A9, QC, Canada
| | - Ahmad Dirany
- Institut national de la recherche scientifique (INRS - Eau, Terre et Environnement), Université du Québec, 490 rue de la Couronne, Québec city, G1K 9A9, QC, Canada
| | - Didier Robert
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), CNRS-UMR7515-University of Strasbourg, Saint-Avold Antenna, Université de Lorraine, 12 rue Victor Demange, 57500, Saint-Avold, France.
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Abstract
Lewis acid-base pair chemistry has been placed on a new level with the discovery that adduct formation between an electron donor (Lewis base) and acceptor (Lewis acid) can be inhibited by the introduction of steric demand, thus preserving the reactivity of both Lewis centers, resulting in highly unusual chemistry. Some of these highly versatile frustrated Lewis pairs (FLP) are capable of splitting a variety of small molecules, such as dihydrogen, in a heterolytic and even catalytic manner. This is in sharp contrast to classical reactions where the inert substrate must be activated by a metal-based catalyst. Very recently, research has emerged combining the two concepts, namely the formation of FLPs in which a metal compound represents the Lewis base, allowing for novel chemistry by using the heterolytic splitting power of both together with the redox reactivity of the metal. Such reactivity is not restricted to the metal center itself being a Lewis acid or base, also ancillary ligands can be used as part of the Lewis pair, still with the benefit of the redox-active metal center nearby. This Minireview is designed to highlight the novel reactions arising from the combination of metal oxido transition-metal or rare-earth-metal compounds with the Lewis acid B(C6 F5 )3 . It covers a wide area of chemistry including small molecule activation, hydrogenation and hydrosilylation catalysis, and olefin metathesis, substantiating the broad influence of the novel concept. Future goals of this young and exciting area are briefly discussed.
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Affiliation(s)
- Niklas Zwettler
- Institute of Chemistry/Inorganic Chemistry, University of Graz, Schubertstrasse 1, 8010, Graz, Austria
| | - Nadia C Mösch-Zanetti
- Institute of Chemistry/Inorganic Chemistry, University of Graz, Schubertstrasse 1, 8010, Graz, Austria
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Kamali M, Persson KM, Costa ME, Capela I. Sustainability criteria for assessing nanotechnology applicability in industrial wastewater treatment: Current status and future outlook. Environ Int 2019; 125:261-276. [PMID: 30731376 DOI: 10.1016/j.envint.2019.01.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 10/11/2018] [Revised: 01/19/2019] [Accepted: 01/19/2019] [Indexed: 06/09/2023]
Abstract
Application of engineered nanomaterials for the treatment of industrial effluents and to deal with recalcitrant pollutants has been noticeably promoted in recent years. Laboratory, pilot and full-scale studies emphasize the potential of this technology to offer promising treatment options to meet the future needs for clean water resources and to comply with stringent environmental regulations. The technology is now in the stage of being transferred to the real applications. Therefore, the assessment of its performance according to sustainability criteria and their incorporation into the decision-making process is a key task to ensure that long term benefits are achieved from the nano-treatment technologies. In this study, the importance of sustainability criteria for the conventional and novel technologies for the treatment of industrial effluents was determined in a general approach assisted by a fuzzy-Delphi method. The criteria were categorized in technical, economic, environmental and social branches and the current situation of the nanotechnology regarding the criteria was critically discussed. The results indicate that the efficiency and safety are the most important parameters to make sustainable choices for the treatment of industrial effluents. Also, in addition to the need for scaling-up the nanotechnology in various stages, the study on their environmental footprint must continue in deeper scales under expected environmental conditions, in particular the synthesis of engineered nanomaterials and the development of reactors with the ability of recovery and reuse the nanomaterials. This paper will aid to select the most sustainable types of nanomaterials for the real applications and to guide the future studies in this field.
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Affiliation(s)
- Mohammadreza Kamali
- Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal; Department of Materials and Ceramics Engineering, Aveiro Institute of Materials, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Kenneth M Persson
- Department of Building and Environmental Technology/Water Resources Engineering, Lund University, PO Box 118, SE-221 00 Lund, Sweden
| | - Maria Elisabete Costa
- Department of Materials and Ceramics Engineering, Aveiro Institute of Materials, CICECO, University of Aveiro, 3810-193 Aveiro, Portugal.
| | - Isabel Capela
- Department of Environment and Planning, Center for Environmental and Marine Studies, CESAM, University of Aveiro, 3810-193 Aveiro, Portugal
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Cuevas-Arteaga C, Escarcega Cuevas O, Rosales I. Synthesis of TiO2 nanotubular arrays and their electrochemical and photoelectrochemical properties to determine their use in photodegradation processes. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.02.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Dundar I, Krichevskaya M, Katerski A, Acik IO. TiO 2 thin films by ultrasonic spray pyrolysis as photocatalytic material for air purification. R Soc Open Sci 2019; 6:181578. [PMID: 30891278 PMCID: PMC6408371 DOI: 10.1098/rsos.181578] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/21/2019] [Indexed: 05/12/2023]
Abstract
In this study, we showed that the TiO2 thin films deposited onto window glass are practicable for air purification and self-cleaning applications. TiO2 films were deposited onto window glass by ultrasonic spray pyrolysis method. Different deposition temperatures were used in the range of 250-450°C. The structural, morphological, optical properties and surface chemical composition were investigated to understand probable factors affecting photocatalytic performance and wettability of the TiO2 thin films. The TiO2 thin films were smooth, compacted and adhered adequately on the substrate with a thickness in the range of 100-240 nm. X-ray diffraction patterns revealed that all the TiO2 thin films consisted of anatase phase structure with the mean crystallite size in the range of 13-35 nm. The optical measurements showed that the deposited films were highly transparent (approx. 85%). The wettability test results showed that the TiO2 thin films sprayed at 350°C and 450°C and annealed at 500°C for 1 h were superhydrophilic. The photocatalytic activity of the films was tested for the degradation of methyl tert-butyl ether (MTBE) in multi-section plug-flow reactor. The TiO2 film deposited at 350°C exhibited the highest amount of conversion of MTBE, approximately 80%.
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Affiliation(s)
- Ibrahim Dundar
- Department of Materials and Environmental Technology, Laboratory of Thin Film Chemical Technologies, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Marina Krichevskaya
- Department of Materials and Environmental Technology, Laboratory of Environmental Technology, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Atanas Katerski
- Department of Materials and Environmental Technology, Laboratory of Thin Film Chemical Technologies, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
| | - Ilona Oja Acik
- Department of Materials and Environmental Technology, Laboratory of Thin Film Chemical Technologies, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia
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Sidaraviciute R, Buivydiene D, Krugly E, Valatka E, Martuzevicius D. A composite microfibre-supported short-nanofibre photocatalyst for environmental pollutant decomposition. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2018.09.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Poorkarimi A, Karimi-Jashni A, Javadpour S. Optimization of toluene removal over W-doped TiO 2 nano-photocatalyst under visible light irradiation. Environ Technol 2018; 39:3135-3148. [PMID: 28868967 DOI: 10.1080/09593330.2017.1375021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 12/19/2016] [Accepted: 08/25/2017] [Indexed: 06/07/2023]
Abstract
This study outlines the optimization of photocatalytic degradation of toluene by W-doped TiO2 nanoparticles under visible light irradiation. Experiments were carried out based on the central composite design (CCD) methodology. W-TiO2 nanoparticles were synthesized with various tungsten contents at different calcination temperatures by the sol-gel method. The nanoparticles' characteristics were determined using appropriate techniques such as field emission scanning electron microscopy, particle size analysis, X-ray diffraction and energy-dispersive spectroscopy. The effect of different operational conditions of coating mass, initial toluene concentration, and exposure time on the toluene removal efficiency was investigated. Result showed that tungsten has a fundamental role in improving the photocatalytic activity of TiO2 under visible light, as well as improving its photoactivity under UV irradiation by decreasing the rate of electron/hole charge recombination. Analysis of the obtained data on toluene removal with a CCD approach illustrated that the quadratic model can effectively predict the toluene removal with coefficient of determination of R2 = 0.862. Tungsten content and exposure time affect the toluene removal efficiency more than other factors. Results showed that maximum toluene removal efficiency slightly depends on the initial concentration of toluene. At the initial toluene concentration of 4000 ppm, the optimum values of the calcination temperature, tungsten content, coating mass, and exposure time were 500°C, 0.52 wt%, 11.7 g/m2, and 8 h, respectively, with 59% removal of toluene.
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Affiliation(s)
- Ali Poorkarimi
- a Department of Civil and Environmental Engineering , School of Engineering, Shiraz University , Shiraz , Iran
| | - Ayoub Karimi-Jashni
- a Department of Civil and Environmental Engineering , School of Engineering, Shiraz University , Shiraz , Iran
| | - Sirus Javadpour
- b Department of Materials Science and Engineering , School of Engineering, Shiraz University , Shiraz , Iran
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Lang J, Matějová L, Matěj Z, Čapek L, Svoboda L. Crystallization of Zr0.1Ti0.9On mixed oxide by pressurized hot water and its effect on microstructural properties and photoactivity. J Supercrit Fluids 2018; 141:39-48. [DOI: 10.1016/j.supflu.2018.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Chen Y, Gao Q, Chen W, Wu F, Yang Y, Werner D, Tao S, Wang X. A mechanistic study of stable dispersion of titanium oxide nanoparticles by humic acid. Water Res 2018; 135:85-94. [PMID: 29454925 DOI: 10.1016/j.watres.2018.02.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 09/22/2017] [Revised: 12/18/2017] [Accepted: 02/07/2018] [Indexed: 06/08/2023]
Abstract
Stable dispersion of nanoparticles with environmentally-friendly materials is important for their various applications including environmental remediation. In this study, we systematically examined the mechanisms of stable dispersion of two types of TiO2 nanoparticles (TNPs) with anatase and rutile crystalline structures by naturally occurring dissolved organic matter (humic acid) at different pHs, including at, below and above the Point of Zero Charge (PZC). The results showed that stable dispersion of TNPs by humic acid (HA) at all pHs tested can only be achieved with the assistance of ultra-sonication. The dispersion of TNPs by HA differed at the three pHs tested. Generally, HA greatly decreased the hydrodynamic diameters of TNPs at a very low concentration. The dispersion of TNPs became relatively stable when the HA concentration exceeded 5 mg/L, indicating that this HA concentration is required for stable dispersion of TNPs. The mechanisms involved in dispersion of TNPs by HA included electrostatic repulsion, steric hindrance and hydrophobic interaction. Electrostatic repulsion was identified to be the dominant mechanism. The dispersion of TNPs was enhanced when HA was added before ultra-sonication to avoid the partly irreversible re-aggregation of TNPs after sonication. The crystalline phases and concentrations of TNPs were also found to influence their stable dispersion. The findings from this work enhance understanding of the combined effects of HA, pH, ultra-sonication and crystalline structures of TNPs on their stable dispersion. The mechanisms identified can improve applications of TNPs in environmental water pollution control.
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Affiliation(s)
- Yin Chen
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Qian Gao
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Weixiao Chen
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Fan Wu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Yu Yang
- Department of Civil and Environmental Engineering, University of Nevada, Reno, NV 89557, USA
| | - David Werner
- School of Engineering, Newcastle University, Newcastle upon Tyne, UK
| | - Shu Tao
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Xilong Wang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China.
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Colmenares JC, Nair V, Kuna E, Łomot D. Development of photocatalyst coated fluoropolymer based microreactor using ultrasound for water remediation. Ultrason Sonochem 2018; 41:297-302. [PMID: 29137755 DOI: 10.1016/j.ultsonch.2017.09.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 09/28/2017] [Accepted: 09/29/2017] [Indexed: 06/07/2023]
Abstract
Formation of thin layers of photocatalyst in photo-microreactor is a challenging work considering the properties of both catalyst and the microchannel material. The deposition of semiconductor materials on fluoropolymer based microcapillary requires the use of economical methods which are also less energy dependent. The current work introduces a new method for depositing nanoparticles of TiO2 on the inner walls of a hexafluoropropylene tetrafluoroethylene microtube under mild conditions using ultrasound technique. During the ultrasonication process, changes in the polymer surface were observed and characterized using Attenuated Total Reflectance spectroscopy, Scanning Electron Microscopy and Confocal Microscopy. The rough patches form sites for catalyst deposition resulting in the formation of thin layer of TiO2 nanoparticles in the inner walls of the microtube. The photocatalytic activity of the TiO2 coated fluoropolymer based microcapillary was evaluated for removal of phenol present in water.
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Affiliation(s)
- Juan Carlos Colmenares
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland.
| | - Vaishakh Nair
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Ewelina Kuna
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Dariusz Łomot
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
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40
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Henkel B, Vahl A, Aktas OC, Strunskus T, Faupel F. Self-organized nanocrack networks: a pathway to enlarge catalytic surface area in sputtered ceramic thin films, showcased for photocatalytic TiO 2. Nanotechnology 2018; 29:035703. [PMID: 29176058 DOI: 10.1088/1361-6528/aa9d35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Sputter deposited photocatalytic thin films offer high adherence and mechanical stability, but typically are outperformed in their photocatalytic properties by colloidal TiO2 nanostructures, which in turn typically suffer from problematic removal. Here we report on thermally controlled nanocrack formation as a feasible and batch applicable approach to enhance the photocatalytic performance of well adhering, reactively sputtered TiO2 thin films. Networks of nanoscopic cracks were induced into tailored columnar TiO2 thin films by thermal annealing. These deep trenches are separating small bundles of TiO2 columns, adding their flanks to the overall catalytically active surface area. The variation of thin film thickness reveals a critical layer thickness for initial nanocrack network formation, which was found to be about 400 nm in case of TiO2. The columnar morphology of the as deposited TiO2 layer with weak bonds between respective columns and with strong bonds to the substrate is of crucial importance for the formation of nanocrack networks. A beneficial effect of nanocracking on the photocatalytic performance was experimentally observed. It was correlated by a simple geometric model for explaining the positive impact of the crack induced enlargement of active surface area on photocatalytic efficiency. The presented method of nanocrack network formation is principally not limited to TiO2 and is therefore seen as a promising candidate for utilizing increased surface area by controlled crack formation in ceramic thin films in general.
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Yin C, Zhao W, Liu R, Liu R, Wang Z, Zhu L, Chen W, Liu S. TiO 2 particles in seafood and surimi products: Attention should be paid to their exposure and uptake through foods. Chemosphere 2017; 188:541-547. [PMID: 28910729 DOI: 10.1016/j.chemosphere.2017.08.168] [Citation(s) in RCA: 21] [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: 07/03/2017] [Revised: 08/22/2017] [Accepted: 08/30/2017] [Indexed: 06/07/2023]
Abstract
The sustainable development of nanotechnology requires a thorough understanding of the life cycle of synthesized nanomaterials, including environmental release, deposition, exposure, and potential health risks. Titanium dioxide (TiO2) materials containing nanosized TiO2 (nTiO2) are commonly used as food additives. Thus, dietary intake through foods is the most important route for the exposure of TiO2 materials. Given the toxic effects of nTiO2 on the gastrointestinal tract and other tissues, it is imperative to investigate their sources and concentrations in popular foods. Therefore, we conducted a survey on TiO2 particles in white-colored seafood and surimi products in Beijing. Our data indicated that the total Ti levels reached 6-12 μg/g (dry weight) in some white-colored seafood products, such as squid and cuttlefish, whereas relatively low concentrations were observed in jellyfish at approximately 1-3 μg/g (dry weight). For the locally favorite surimi-based food products in the market, the Ti concentrations ranged from 2 to 81 μg/g (dry weight). The exposure assessment showed that the average daily intake of TiO2 particles through foods varied from 0.02 to 3.09 μg TiO2/kgbw/day, reflected by the Ti concentrations in this study, and that young people of age 20-30 showed the highest exposure level. Together, these results show relatively high concentrations of TiO2 particles in some seafood and surimi products available in the market, and our findings therefore call for attention on TiO2 particle exposure and uptake through daily foods.
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Affiliation(s)
- Chunyang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weilu Zhao
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Rui Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rong Liu
- Center for the Environmental Implications of Nanotechnology, California Nanosystems Institute, University of California, Los Angeles, CA 90095, United States
| | - Zhe Wang
- School of Public Health, Xinxiang Medical University, Xinxiang, Henan Province 453003, China
| | - Lingyan Zhu
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China
| | - Wei Chen
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, 38 Tongyan Road, Tianjin 300350, China.
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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López Zavala MÁ, Lozano Morales SA, Ávila-Santos M. Synthesis of stable TiO 2 nanotubes: effect of hydrothermal treatment, acid washing and annealing temperature. Heliyon 2017; 3:e00456. [PMID: 29264415 DOI: 10.1016/j.heliyon.2017.e00456] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 09/29/2017] [Accepted: 11/13/2017] [Indexed: 11/21/2022] Open
Abstract
Effect of hydrothermal treatment, acid washing and annealing temperature on the structure and morphology of TiO2 nanotubes during the formation process was assessed. X-ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy analysis were conducted to describe the formation and characterization of the structure and morphology of nanotubes. Hydrothermal treatment of TiO2 precursor nanoparticles and acid washing are fundamental to form and define the nanotubes structure. Hydrothermal treatment causes a change in the crystallinity of the precursor nanoparticles from anatase phase to a monoclinic phase, which characterizes the TiO2 nanosheets structure. The acid washing promotes the formation of high purity nanotubes due to Na+ is exchanged from the titanate structure to the hydrochloric acid (HCl) solution. The annealing temperature affects the dimensions, structure and the morphology of the nanotubes. Annealing temperatures in the range of 400 °C and 600 °C are optimum to maintain a highly stable tubular morphology of nanotubes. Additionally, nanotubes conserve the physicochemical properties of the precursor Degussa P25 nanoparticles. Temperatures greater than 600 °C alter the morphology of nanotubes from tubular to an irregular structure of nanoparticles, which are bigger than those of the precursor material, i.e., the crystallinity turn from anatase phase to rutile phase inducing the collapse of the nanotubes.
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43
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Nunes BN, Paula LF, Costa ÍA, Machado AEH, Paterno LG, Patrocinio AOT. Layer-by-layer assembled photocatalysts for environmental remediation and solar energy conversion. Journal of Photochemistry and Photobiology C: Photochemistry Reviews 2017; 32:1-20. [DOI: 10.1016/j.jphotochemrev.2017.05.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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44
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Albo Y, Shandalov E, Hayoun L, Zilbermann I, Maimon E, Meyerstein D. Homogeneous and heterogeneous electrocatalytic reduction of halo-organic compounds by (NiIILi)2+ (Li= tetraaza-macrocyclic ligand) in aqueous solutions. Inorganica Chim Acta 2017; 466:502-9. [DOI: 10.1016/j.ica.2017.06.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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Nawawi W, Zaharudin R, Zuliahani A, Shukri D, Azis T, Razali Z. Immobilized TiO2-Polyethylene Glycol: Effects of Aeration and pH of Methylene Blue Dye. Applied Sciences 2017; 7:508. [DOI: 10.3390/app7050508] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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46
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Das R, Vecitis CD, Schulze A, Cao B, Ismail AF, Lu X, Chen J, Ramakrishna S. Recent advances in nanomaterials for water protection and monitoring. Chem Soc Rev 2017; 46:6946-7020. [DOI: 10.1039/c6cs00921b] [Citation(s) in RCA: 353] [Impact Index Per Article: 50.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nanomaterials (NMs) for adsorption, catalysis, separation, and disinfection are scrutinized. NMs-based sensor technologies and environmental transformations of NMs are highlighted.
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Affiliation(s)
- Rasel Das
- Leibniz Institute of Surface Modification
- D-04318 Leipzig
- Germany
| | - Chad D. Vecitis
- School of Engineering and Applied Sciences
- Harvard University
- Cambridge
- USA
| | - Agnes Schulze
- Leibniz Institute of Surface Modification
- D-04318 Leipzig
- Germany
| | - Bin Cao
- School of Civil and Environmental Engineering
- Nanyang Technological University
- Singapore
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Centre
- Universiti Teknologi Malaysia
- 81310 Johor
- Malaysia
| | - Xianbo Lu
- CAS Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Dalian 116023
- China
| | - Jiping Chen
- CAS Key Laboratory of Separation Science for Analytical Chemistry
- Dalian Institute of Chemical Physics
- Dalian 116023
- China
| | - Seeram Ramakrishna
- Centre for Nanofibers and Nanotechnology
- Department of Mechanical Engineering
- National University of Singapore
- Singapore
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47
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Colmenares JC, Varma RS, Nair V. Selective photocatalysis of lignin-inspired chemicals by integrating hybrid nanocatalysis in microfluidic reactors. Chem Soc Rev 2017; 46:6675-6686. [DOI: 10.1039/c7cs00257b] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In an ideal symbiosis of nanophotocatalysis and microflow chemistry, this tutorial review delineates a micro-highway decorated with semiconductor-based photocatalytic thin layers for the selective transformations of lignin-based chemicals to high-value organic products.
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Affiliation(s)
| | - Rajender S. Varma
- Regional Centre of Advanced Technologies and Materials
- Faculty of Science
- Palacky University
- Olomouc
- Czech Republic
| | - Vaishakh Nair
- Institute of Physical Chemistry
- Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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48
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Arlos MJ, Liang R, Hatat-Fraile MM, Bragg LM, Zhou NY, Servos MR, Andrews SA. Photocatalytic decomposition of selected estrogens and their estrogenic activity by UV-LED irradiated TiO2 immobilized on porous titanium sheets via thermal-chemical oxidation. J Hazard Mater 2016; 318:541-550. [PMID: 27469042 DOI: 10.1016/j.jhazmat.2016.07.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 05/12/2016] [Revised: 06/21/2016] [Accepted: 07/20/2016] [Indexed: 05/24/2023]
Abstract
The removal of endocrine disrupting compounds (EDCs) remains a big challenge in water treatment. Risks associated with these compounds are not clearly defined and it is important that the water industry has additional options to increase the resiliency of water treatment systems. Titanium dioxide (TiO2) has potential applications for the removal of EDCs from water. TiO2 has been immobilized on supports using a variety of synthesis methods to increase its feasibility for water treatment. In this study, we immobilized TiO2 through the thermal-chemical oxidation of porous titania sheets. The efficiency of the material to degrade target EDCs under UV-LED irradiation was examined under a wide range of pH conditions. A yeast-estrogen screen assay was used to complement chemical analysis in assessing removal efficiency. All compounds but 17β-estradiol were degraded and followed a pseudo first-order kinetics at all pH conditions tested, with pH 4 and pH 11 showing the most and the least efficient treatments respectively. In addition, the total estrogenic activity was substantially reduced even with the inefficient degradation of 17β-estradiol. Additional studies will be required to optimize different treatment conditions, UV-LED configurations, and membrane fouling mitigation measures to make this technology a more viable option for water treatment.
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Affiliation(s)
- Maricor J Arlos
- Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Robert Liang
- Centre for Advanced Materials Joining, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Melisa M Hatat-Fraile
- Centre for Advanced Materials Joining, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Leslie M Bragg
- Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Norman Y Zhou
- Centre for Advanced Materials Joining, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada; Waterloo Institute of Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Mark R Servos
- Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Susan A Andrews
- Civil Engineering Department, University of Toronto, Toronto, Ontario M5S 1A4, Canada
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49
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Colmenares JC, Varma RS, Lisowski P. Sustainable hybrid photocatalysts: titania immobilized on carbon materials derived from renewable and biodegradable resources. Green Chem 2016; 18:10.1039/c6gc02477g. [PMID: 32665764 PMCID: PMC7359876 DOI: 10.1039/c6gc02477g] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
This review comprises the preparation, properties and heterogeneous photocatalytic applications of TiO2 immobilized on carbon materials derived from earth-abundant, renewable and biodegradable agricultural residues and sea food waste resources. The overview provides key scientific insights into widely used TiO2 supported on carbonaceous materials emanating from biopolymeric materials such as lignin, cellulose, cellulose acetate, bacterial cellulose, bamboo, wood, starch, chitosan and agricultural residues (biochar, charcoal, activated carbon and their magnetic forms, coal fly ash) or seafood wastes namely eggshell, clamshell and fish scales; materials that serve as a support/template for TiO2. Heightened awareness and future inspirational developments for the valorisation of various forms of carbonaceous functional materials is the main objective. This appraisal abridges various strategies available to upgrade renewable carbon-based feedstock via the generation of sustainable TiO2/carbon functional materials and provides remarks on their future prospects. Hopefully, this will stimulate the development of efficient and novel composite photocatalysts and engender the necessary knowledge base for further advancements in greener photocatalytic technologies.
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Affiliation(s)
- Juan Carlos Colmenares
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52, Warsaw, Poland
| | - Rajender S. Varma
- Sustainable Technology Division, National Risk Management Research Laboratory, US Environmental Protection Agency, 26 West Martin Luther King Drive, MS 443, Cincinnati, Ohio, USA
| | - Paweł Lisowski
- Institute of Physical Chemistry, Polish Academy of Sciences Kasprzaka 44/52, Warsaw, Poland
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50
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