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Oliveira EM, Rodrigues A, Santos JS, Trivinho-Strixino F, Dalla Costa da Rocha R, Sikora MS. Effluent toxicity study using biomarkers for ciprofloxacin photoelectrocatalytic degradation by bismuth-doped titanium dioxide nanotubes. ENVIRONMENTAL TECHNOLOGY 2023:1-13. [PMID: 38158753 DOI: 10.1080/09593330.2023.2298664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 12/15/2023] [Indexed: 01/03/2024]
Abstract
Ciprofloxacin hydrochloride (CIP) is a broad-spectrum synthetic antibiotic often found in domestic sewage and industrial waste due to the inefficiency of conventional treatments. Given the potential risk of drug accumulation, this study presents coatings of titanium dioxide nanotubes (TiO2) doped with different bismuth (Bi) concentrations to degrade CIP through photocatalytic and photoelectrochemical processes. Characterization studies revealed that bismuth (Bi) doping affected the morphology of the materials, with concentrations of 0.01 and 0.05 mol L-1, resulting in collapsed materials with a smaller active surface area. Photocatalysis tests for all the materials exhibited a similar degree of efficiency to photolysis, approximately 33%. Ecotoxicity tests using the biomarkers Lactuca sativa L., Lemna minor, and Artemia salina indicated that, although they were similar to photolysis in terms of efficiency, the effluents generated when employing the doped catalysts showed lower levels of toxicity, with the best results achieved for the material doped with 0.005 mol L-1 of Bi, with a toxicity level approximately 40% lower. Photoelectrocatalysis proved to be the most efficient CIP degradation technique. The highest degradation rate was observed for materials doped with 0.005 mol L-1 of Bi, with an efficiency of 46%, which is 1.4 times more efficient than photolysis. These results demonstrate that materials doped with low amounts of Bi can be effectively used as photoanodes for drug degradation, as their performance is superior, and the final product generated exhibits low toxicity to living organisms.
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Affiliation(s)
- E M Oliveira
- Department of Chemistry, Federal University of Technology - Paraná (UTFPR), Pato Branco, Brazil
- Midwestern Parana State University (UNICENTRO), Guarapuava, Brazil
| | - A Rodrigues
- Department of Physics, Chemistry, and Mathematics, Federal University of São Carlos (UFSCar), Sorocaba, Brazil
| | - J S Santos
- Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
| | - F Trivinho-Strixino
- Department of Physics, Chemistry, and Mathematics, Federal University of São Carlos (UFSCar), Sorocaba, Brazil
| | - R Dalla Costa da Rocha
- Department of Chemistry, Federal University of Technology - Paraná (UTFPR), Pato Branco, Brazil
| | - M S Sikora
- Department of Chemistry, Federal University of Technology - Paraná (UTFPR), Pato Branco, Brazil
- Midwestern Parana State University (UNICENTRO), Guarapuava, Brazil
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2
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Awoke YA, Tsai MC, Adam DB, Ayele AA, Yang SC, Huang WH, Chen JL, Pao CW, Mou CY, Su WN, Hwang BJ. The synergistic effect Pt1-W dual sites as a highly active and durable catalyst for electrochemical methanol oxidation. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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A High-Performing Nanostructured Ir Doped-TiO2 for Efficient Photocatalytic Degradation of Gaseous Toluene. INORGANICS 2022. [DOI: 10.3390/inorganics10030029] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
TiO2-based photocatalysts still have some limitations such as large bandgap and low surface area, leading to low efficiency in the photocatalytic degradation of VOCs and limiting it to use in sunlight. Here we report that the nanostructured Ir-doped TiO2 as an efficient photocatalyst generates an excellent risk-reduction material of gaseous toluene. We have succeeded in developing a nanostructured Ir-doped TiO2 and initially found that excellent efficient photocatalytic VOC decomposition can be achieved in our materials The nanostructured Ir-doped TiO2 was synthesized by a one pot, low temperature hydrothermal process with different ratios of Ir doped into the TiO2. It exhibited a high surface area, uniformly spherical morphology of 10–15 nm. Its activity for the photocatalytic degradation of gaseous toluene exhibited up to 97.5% under UV light. This enhancement could be explained by iridium doping which created a high concentration oxygen vacancy and changed the recombination rate of the photogenerated charge carriers. More generally, our study indicates a strategic way to develop the novel nanostructured material for numerous applications.
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Subramaniam MN, Goh PS, Kanakaraju D, Lim JW, Lau WJ, Ismail AF. Photocatalytic membranes: a new perspective for persistent organic pollutants removal. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:12506-12530. [PMID: 34101123 DOI: 10.1007/s11356-021-14676-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 05/27/2021] [Indexed: 06/12/2023]
Abstract
The presence of conventional and emerging pollutants infiltrating into our water bodies is a course of concern as they have seriously threatened water security. Established techniques such as photocatalysis and membrane technology have proven to be promising in removing various persistent organic pollutants (POP) from wastewaters. The emergence of hybrid photocatalytic membrane which incorporates both photocatalysis and membrane technology has shown greater potential in treating POP laden wastewater based on their synergistic effects. This article provides an in-depth review on the roles of both photocatalysis and membrane technology in hybrid photocatalytic membranes for the treatment of POP containing wastewaters. A concise introduction on POP's in terms of examples, their origins and their effect on a multitude of organisms are critically reviewed. The fundamentals of photocatalytic mechanism, current directions in photocatalyst design and their employment to treat POP's are also discussed. Finally, the challenges and future direction in this field are presented.
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Affiliation(s)
- Mahesan Naidu Subramaniam
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Pei Sean Goh
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
| | - Devagi Kanakaraju
- Faculty of Resource and Science Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Sarawak, Malaysia
| | - Jun Wei Lim
- Department of Fundamental and Applied Sciences, HICoE-Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, Darul Ridzuan, 32610, Perak, Malaysia
| | - Woei Jye Lau
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Ahmad Fauzi Ismail
- Advanced Membrane Technology Research Center, School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
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Samiolo L, Amadelli R, Maldotti A, Molinari A. Comparative visible-light driven selective oxidation to aldehydes of phenylmethanol (benzyl alcohol) and 4-pyridinylmethanol (4-pyridinecarbinol) on N-TiO 2 and some commercial TiO 2 samples. Photochem Photobiol Sci 2021; 20:1635-1644. [PMID: 34802142 DOI: 10.1007/s43630-021-00137-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 11/08/2021] [Indexed: 10/19/2022]
Abstract
Visible light (λ > 420 nm) selective photooxidation of phenylmethanol and 4-pyridinylmethanol in CH3CN to the corresponding aldehydes on N-TiO2 is compared with homemade undoped TiO2 (U-TiO2) and commercial undoped anatase specimens (such as PC105, PC500). Significant differences observed between N-TiO2 and undoped TiO2 are neither directly related to the surface area nor to the adsorbed amount of alcohol in the dark by surface area unit. FTIR and EPR spectroscopies are used to study the surface of TiO2 samples and to deeply understand the phenomena intervening in the visible-light photocatalytic activation of the doped vs the undoped oxides. In particular, it is shown that on N-TiO2 (and also on undoped PC105) strong Lewis acid sites (LAS) exist. The favorable role of LAS on the photocatalytic activity is illustrated by the higher photooxidation of 4-pyridinylmethanol vs phenylmethanol over N-TiO2 and PC105 in contrast to the other undoped samples, whose visible light sensitivity originates from a charge transfer between the alcohol and the solid. EPR spectra of N-TiO2 point out the presence of paramagnetic centers related to nitrogen that disappear when the photocatalyst is irradiated with visible light in the presence of alcohol, which starts its oxidative process. On the basis of presented results, we propose that doping with N introduces new intraband gap states that not only contribute to LAS and adsorption of alcohol but also are directly involved in the photochemical process occurring under visible light irradiation.
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Affiliation(s)
- Luca Samiolo
- c/o Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, ISOF CNR, UoS di Ferrara, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Rossano Amadelli
- c/o Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, ISOF CNR, UoS di Ferrara, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Andrea Maldotti
- Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy
| | - Alessandra Molinari
- Dipartimento di Scienze Chimiche, Farmaceutiche ed Agrarie, Università di Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy.
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6
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Selective removal of sulfur from 3-methyl thiophene under mild conditions over NiW/Al2O3-TiO2 modified by surfactants. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.06.072] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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Zhang H, Yu H, Yuan W, Yu B, Chen Y, Deng J, He D, Zhang Y. The roles of M-TiO2 (M = Co2+ & F–) nanoparticles loaded on RGO in the denitrogenation performance of photocatalytic. J DISPER SCI TECHNOL 2020. [DOI: 10.1080/01932691.2020.1848581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Huili Zhang
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University , Daqing , China
| | - Hailin Yu
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University , Daqing , China
| | - Wen Yuan
- Daqing Oilfield Company, Daqing Oil Production Engineering Research Institute , Heilongjiang, Daqing , China
| | - Bo Yu
- Daqing Oilfield Company, Daqing Oil Production Engineering Research Institute , Heilongjiang, Daqing , China
| | - Ying Chen
- Provincial Key Laboratory of Oil & Gas Chemical Technology, College of Chemistry & Chemical Engineering, Northeast Petroleum University , Daqing , China
| | - Jinjun Deng
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University , Daqing , China
| | - Danfeng He
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University , Daqing , China
| | - Ye Zhang
- Heilongjiang Provincial Key Laboratory of Oilfield Applied Chemistry and Technology, School of Chemical Engineering, Daqing Normal University , Daqing , China
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8
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MWCNTs attached neodymium doped-ZnO photocatalysts for efficient removal of dyes from wastewater. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2805-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
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9
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Thalgaspitiya WRK, Kankanam Kapuge T, He J, Kerns P, Meguerdichian AG, Suib SL. A novel, mesoporous molybdenum doped titanium dioxide/reduced graphene oxide composite as a green, highly efficient solid acid catalyst for acetalization. Dalton Trans 2020; 49:3786-3795. [DOI: 10.1039/c9dt03633d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A novel, mesoporous molybdenum doped titanium dioxide-reduced graphene oxide composite is synthesized as a highly efficient heterogeneous solid acid catalyst.
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Affiliation(s)
| | | | - Junkai He
- Institute of Materials Science
- University of Connecticut
- Storrs
- USA
| | | | | | - Steven L. Suib
- Department of Chemistry
- Storrs
- USA
- Institute of Materials Science
- University of Connecticut
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10
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Preparation and Application of Ordered Mesoporous Metal Oxide Catalytic Materials. CATALYSIS SURVEYS FROM ASIA 2019. [DOI: 10.1007/s10563-019-09288-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Wang X, Wang LL, Guo D, Ma LL, Zhu BL, Wang P, Wang GC, Zhang SM, Huang WP. Fabrication and photocatalytic performance of C, N, F-tridoped TiO2 nanotubes. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.05.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Karthik K, Vijayalakshmi S, Phuruangrat A, Revathi V, Verma U. Multifunctional Applications of Microwave-Assisted Biogenic TiO2 Nanoparticles. J CLUST SCI 2019. [DOI: 10.1007/s10876-019-01556-1] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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13
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14
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A facile coating method to construct uniform porous α-Fe2O3@TiO2 core-shell nanostructures with enhanced solar light photocatalytic activity. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.01.067] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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15
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Gao X, Fei J, Dai Y, Fu F. Hydrothermal synthesis of series Cu-doped Bi 2 WO 6 and its application in photo-degradative removal of phenol in wastewater with enhanced efficiency. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.02.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Yuan X, Xu Y, Meng H, Han Y, Wu J, Xu J, Zhang X. Fabrication of ternary polyaniline-graphene oxide-TiO2 hybrid films with enhanced activity for photoelectrocatalytic hydrogen production. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2017.10.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Chen H, Wang L, Guan L, Ren H, Zhang Y, Tao J. Tungsten and nitrogen co-doped TiO2
nanobelts with significant visible light photoactivity. SURF INTERFACE ANAL 2017. [DOI: 10.1002/sia.6351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongjian Chen
- Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering; Hebei University of Technology; Tianjin 300130 China
| | - Longxuan Wang
- Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering; Hebei University of Technology; Tianjin 300130 China
| | - Lixiu Guan
- School of Science; Hebei University of Technology; Tianjin 300401 China
| | - Hui Ren
- Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering; Hebei University of Technology; Tianjin 300130 China
| | - Yingxin Zhang
- Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering; Hebei University of Technology; Tianjin 300130 China
| | - Junguang Tao
- Key Laboratory for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering; Hebei University of Technology; Tianjin 300130 China
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18
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Fabrication of polyaniline sensitized grey-TiO 2 nanocomposites and enhanced photocatalytic activity. Sep Purif Technol 2017. [DOI: 10.1016/j.seppur.2017.04.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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19
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Dang C, Zhang Q, Xu M, Ruan X, Xu P, Yan J, Li J. One-pot solvothermal preparation of mesoporous Cu(II)Porphyrin-TiO 2 composites with enhanced photocatalytic activity and stability. INORG NANO-MET CHEM 2017. [DOI: 10.1080/15533174.2016.1186092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Chong Dang
- School of Information Science and Technology, Northwest University, Xi'an, China
| | - Qiongwen Zhang
- School of Information Science and Technology, Northwest University, Xi'an, China
| | - Manzhang Xu
- School of Information Science and Technology, Northwest University, Xi'an, China
| | - Xiongfei Ruan
- School of Information Science and Technology, Northwest University, Xi'an, China
| | - Panpan Xu
- School of Information Science and Technology, Northwest University, Xi'an, China
| | - Junfeng Yan
- School of Information Science and Technology, Northwest University, Xi'an, China
| | - Jun Li
- College of Chemistry and Materials Science, Northwest University, Xi'an, China
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20
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Belver C, Han C, Rodriguez J, Dionysiou D. Innovative W-doped titanium dioxide anchored on clay for photocatalytic removal of atrazine. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.04.029] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Tran TS, Yu J, Li C, Guo F, Zhang Y, Xu G. Structure and performance of a V2O5–WO3/TiO2–SiO2 catalyst derived from blast furnace slag (BFS) for DeNOx. RSC Adv 2017. [DOI: 10.1039/c7ra01252g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The excellent DeNOx performances for a slag-based catalyst derived from its presence of proper amounts of Al2O3/Fe2O3/SO42− as the catalyst dopants or impurities from processing Ti-bearing BFS in making the catalyst.
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Affiliation(s)
- Tuyet-Suong Tran
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Jian Yu
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Changming Li
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Feng Guo
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Yusheng Zhang
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
| | - Guangwen Xu
- State Key Laboratory of Multi-phase Complex Systems
- Institute of Process Engineering
- Chinese Academy of Sciences
- Beijing 100190
- China
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22
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Bian G, Jiang P, Zhao H, Jiang K, Hu L, Dong Y, Zhang W. 3D Macro-Mesoporous TiO2-Graphene Oxide (GO) Composite with Enhanced Catalytic Performance in the Epoxidation of Styrene and its Derivatives. ChemistrySelect 2016. [DOI: 10.1002/slct.201600387] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gang Bian
- The Key Laboratory of Food Colloids and Biotechnology; School of Chemical and Material Engineering; Jiangnan University.; Wuxi 214122 P.R. China
| | - Pingping Jiang
- The Key Laboratory of Food Colloids and Biotechnology; School of Chemical and Material Engineering; Jiangnan University.; Wuxi 214122 P.R. China
| | - Hui Zhao
- The Key Laboratory of Food Colloids and Biotechnology; School of Chemical and Material Engineering; Jiangnan University.; Wuxi 214122 P.R. China
| | - Kelei Jiang
- Wuxi WeiFu Lida Catalytic Converter CO., LTD.; Wuxi 214177 P.R. China
| | - Ling Hu
- The Key Laboratory of Food Colloids and Biotechnology; School of Chemical and Material Engineering; Jiangnan University.; Wuxi 214122 P.R. China
| | - Yuming Dong
- The Key Laboratory of Food Colloids and Biotechnology; School of Chemical and Material Engineering; Jiangnan University.; Wuxi 214122 P.R. China
| | - Weijie Zhang
- The Key Laboratory of Food Colloids and Biotechnology; School of Chemical and Material Engineering; Jiangnan University.; Wuxi 214122 P.R. China
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23
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Srinivasan NR, Bandyopadhyaya R. SnxTi1−xO2 solid-solution-nanoparticle embedded mesoporous silica (SBA-15) hybrid as an engineered photocatalyst with enhanced activity. Faraday Discuss 2016; 186:353-70. [DOI: 10.1039/c5fd00126a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Synthesis of hybrids of a porous host-material (with well-dispersed embedded nanoparticles inside the pore), wherein each nanoparticle has precisely controlled properties (size and composition) poses a generic challenge. To this end, a new strategy is proposed to form SnxTi1−xO2 solid-solution-nanoparticles inside the pores of sphere-like mesoporous silica (SBA-15), with different percentages of Sn in the nanoparticle (varying from 5 to 50 at%), for enhanced photocatalysis. X-ray diffraction confirms the formation of solid-solution nanoparticles in the porous silica hybrid, while the location of nanoparticles and elemental composition are identified using electron microscopy. The hybrid with 5 at% of Sn (Sn0.05Ti0.95O2-sphere-like SBA-15) shows the maximum photocatalytic activity for degradation of rhodamine-B dye (first order rate constant for degradation, k = 1.86 h−1), compared to both pure TiO2-sphere-like SBA-15 (k = 1.38 h−1) or pure SnO2-sphere-like SBA-15 (k = 0.14 h−1) or other hybrids in this series. XPS and PL spectra suggest the formation of more oxygen vacancies during the replacement of Ti4+ with Sn4+. Electrochemical studies reveal that there is a reduction of charge transfer resistance from 910 kΩ cm−2 for TiO2-sphere-like SBA-15, to 332 kΩ cm−2 for Sn0.05Ti0.95O2-sphere-like SBA-15. These results imply that the enhancement in photocatalytic performance is as a result of delay in recombination of charge carriers. Therefore, the approach followed in the present work to form solid-solution nanoparticles inside a porous host without causing pore blockage, would be a promising route towards increasing reaction rates in catalytic applications of hybrid materials.
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Affiliation(s)
- N. R. Srinivasan
- Department of Chemical Engineering
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Rajdip Bandyopadhyaya
- Department of Chemical Engineering
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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24
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Gu L, Zhang H, Jiao Z, Li M, Wu M, Lei Y. Glucosamine-induced growth of highly distributed TiO2 nanoparticles on graphene nanosheets as high-performance photocatalysts. RSC Adv 2016. [DOI: 10.1039/c6ra15028d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ultrasmall TiO2 nanoparticles@graphene composites with superior photocatalytic activity have been designed by a facile glucosamine-assisted hydrothermal strategy.
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Affiliation(s)
- Lanbing Gu
- Institute of Nanochemistry and Nanobiology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Haijiao Zhang
- Institute of Nanochemistry and Nanobiology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Zheng Jiao
- Institute of Nanochemistry and Nanobiology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Minjie Li
- Department of Chemistry
- College of Science
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Minghong Wu
- Institute of Nanochemistry and Nanobiology
- School of Environmental and Chemical Engineering
- Shanghai University
- Shanghai 200444
- P. R. China
| | - Yong Lei
- Institute of Physics & IMN MacroNano
- Ilmenau University of Technology
- Ilmenau 98693
- Germany
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25
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Lu XX, Luo YH, Lu C, Chen X, Zhang H. Assembly of three new POM-based Ag(I) coordination polymers with antibacterial and photocatalytic properties. J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2015.09.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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26
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Shen L, Liang R, Wu L. Strategies for engineering metal-organic frameworks as efficient photocatalysts. CHINESE JOURNAL OF CATALYSIS 2015. [DOI: 10.1016/s1872-2067(15)60984-6] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Solvothermal preparation of copper(II) porphyrin-sensitized mesoporous TiO2 composites: enhanced photocatalytic activity and stability in degradation of 4-nitrophenol. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2349-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Chen Y, Tao Q, Fu W, Yang H, Zhou X, Su S, Ding D, Mu Y, Li X, Li M. Enhanced photoelectric performance of PbS/CdS quantum dot co-sensitized solar cells via hydrogenated TiO2 nanorod arrays. Chem Commun (Camb) 2015; 50:9509-12. [PMID: 25010989 DOI: 10.1039/c4cc02217c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The enhanced photoelectric performance of quantum dot sensitized solar cells via hydrogenated TiO2 is proposed. The best energy conversion efficiency is 1.5 times higher than cells without hydrogen treatment. We demonstrated that introducing oxygen vacancies by hydrogenation is an effective and feasible method for enhanced photoelectric performance.
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Affiliation(s)
- Yanli Chen
- State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, P. R. China.
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29
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Young Park S, Uk Lee H, Lee YC, Choi S, Hyun Cho D, Sik Kim H, Bang S, Seo S, Chang Lee S, Won J, Son BC, Yang M, Lee J. Eco-friendly carbon-nanodot-based fluorescent paints for advanced photocatalytic systems. Sci Rep 2015; 5:12420. [PMID: 26201431 PMCID: PMC5378878 DOI: 10.1038/srep12420] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 06/26/2015] [Indexed: 12/28/2022] Open
Abstract
Fluorescent carbon nanomaterials, especially zero-dimensional (0D) carbon nanodots (CDs), are widely used in broad biological and optoelectronic applications. CDs have unique characteristics such as strong fluorescence, biocompatibility, sun-light response, and capability of mass-production. Beyond the previous green CD obtained from harmful natural substances, we report a new type of fluid-based fluorescent CD paints (C-paints) derived from polyethylene glycol (PEG; via simple ultrasound irradiation at room temperatures) and produced in quantum yields of up to ~14%. Additionally, C-paints possess a strong, UV- and visible-light-responsive photoluminescent (PL) property. Most especially, C-paints, by incorporation into a photocatalytic system, show additional roles in the emission of fluorescent light for activation of TiO2 nanoparticles (NPs) and the resultant detoxification of most organic dyes, thus further enabling embarkation in advanced water purification.
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Affiliation(s)
- So Young Park
- Advanced Nano-Surface Research Group Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Hyun Uk Lee
- Advanced Nano-Surface Research Group Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, Gyeonggi-do 461-701, Republic of Korea
| | - Saehae Choi
- Sustainable Bioresource Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 305-806, Republic of Korea
| | - Dae Hyun Cho
- Sustainable Bioresource Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 305-806, Republic of Korea
| | - Hee Sik Kim
- Sustainable Bioresource Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 305-806, Republic of Korea
| | - Sunghee Bang
- Department of Engineering (Nanotechnology Engineering), University of Waterloo 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Soonjoo Seo
- Advanced Nano-Surface Research Group Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Soon Chang Lee
- Department of Applied Chemistry and Biological Engineering, Chungnam National University, Daejeon 305-764, Republic of Korea
| | - Jonghan Won
- Advanced Nano-Surface Research Group Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Byung-Chul Son
- Korea Advanced Institute of Science and Technology (KAIST), Research Analysis Center, Daejeon 305-701, Republic of Korea
| | - Mino Yang
- Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
| | - Jouhahn Lee
- Advanced Nano-Surface Research Group Korea Basic Science Institute (KBSI), Daejeon 305-333, Republic of Korea
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30
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Woo CH, Choi YC, Choi JS, Lee HY, Cho YW. A bilayer composite composed of TiO2-incorporated electrospun chitosan membrane and human extracellular matrix sheet as a wound dressing. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:841-54. [PMID: 26096447 DOI: 10.1080/09205063.2015.1061349] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We designed bilayer composites composed of an upper layer of titanium dioxide (TiO2)-incorporated chitosan membrane and a sub-layer of human adipose-derived extracellular matrix (ECM) sheet as a wound dressing for full-thickness wound healing. The dense and fibrous top layer, which aims to protect the wound from bacterial infection, was prepared by electrospinning of chitosan solution followed by immersion in TiO2 solution. The sponge-like sub-layer, which aims to promote new tissue regeneration, was prepared with acellular ECM derived from human adipose tissue. Using a modified drop plate method, there was a 33.9 and 69.6% reduction in viable Escherichia coli and Staphylococcus aureus on the bilayer composite, respectively. In an in vivo experiment using rats, the bilayer composites exhibited good biocompatibility and provided proper physicochemical and compositional cues at the wound site. Changes in wound size and histological examination of full-thickness wounds showed that the bilayer composites induced faster regeneration of granulation tissue and epidermis with less scar formation, than control wounds. Overall results suggest that the TiO2-incorporated chitosan/ECM bilayer composite can be a suitable candidate as a wound dressing, with an excellent inhibition of bacterial penetration and wound healing acceleration effects.
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Affiliation(s)
- Chang Hee Woo
- a Department of Chemical Engineering , Hanyang University , Ansan , Gyeonggi-do 426-791 , Republic of Korea
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31
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Singh R, Pal B. Preparation, Surface and Crystal Structure, Band Energetics, Optoelectronic, and Photocatalytic Properties of AuxCd1−xS Nanorods. Chempluschem 2015; 80:851-858. [DOI: 10.1002/cplu.201402388] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 01/30/2015] [Indexed: 11/07/2022]
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32
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Li F, Tian F, Liu C, Wang Z, Du Z, Li R, Zhang L. One-step synthesis of nanohybrid carbon dots and TiO2 composites with enhanced ultraviolet light active photocatalysis. RSC Adv 2015. [DOI: 10.1039/c4ra14865g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Nano-hybrid composites of carbon dots (CDs) and titanium dioxide (TiO2) were fabricated by a designed one-step solvothermal method.
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Affiliation(s)
- Fan Li
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
| | - Feng Tian
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
| | - Changjun Liu
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
| | - Zheng Wang
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
| | - Zhenjie Du
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
| | - Ruixin Li
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
| | - Li Zhang
- Institute of Medical Equipment
- Academy of Military Medical Sciences
- Tianjin 300161
- PR China
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33
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Xue J, Ma S, Zhou Y, Zhang Z. Facile synthesis of ZnO–C nanocomposites with enhanced photocatalytic activity. NEW J CHEM 2015. [DOI: 10.1039/c4nj02004a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ZnO–C nanocomposites exhibit excellent photocatalytic activity towards methylene blue degradation.
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Affiliation(s)
- Jinjuan Xue
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P. R. China
| | - Shuaishuai Ma
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P. R. China
| | - Yuming Zhou
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P. R. China
| | - Zewu Zhang
- School of Chemistry and Chemical Engineering
- Southeast University
- Nanjing 211189
- P. R. China
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34
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Wang H, Fu Y, Han T, Wan J, Zheng X. Adsorption and photocatalytic behavior of titanate nanotubes sensitized with zinc tetra(4-carboxyphenyl) porphyrin. RSC Adv 2015. [DOI: 10.1039/c5ra01330e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effect of calcination temperature and ZnTCPP sensitizer on the morphology of ZnTCPP–TNTS.
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Affiliation(s)
- Huigang Wang
- Department of Chemistry and Engineering Research Center for Eco-dyeing and Finishing of Textiles
- MOE
- Zhejiang Sci-Tech University
- State Key Laboratory of ATMMT(MOE)
- Hangzhou 310018
| | - Ying Fu
- Department of Chemistry and Engineering Research Center for Eco-dyeing and Finishing of Textiles
- MOE
- Zhejiang Sci-Tech University
- State Key Laboratory of ATMMT(MOE)
- Hangzhou 310018
| | - Tiehu Han
- Department of Chemistry and Engineering Research Center for Eco-dyeing and Finishing of Textiles
- MOE
- Zhejiang Sci-Tech University
- State Key Laboratory of ATMMT(MOE)
- Hangzhou 310018
| | - Junmin Wan
- Department of Chemistry and Engineering Research Center for Eco-dyeing and Finishing of Textiles
- MOE
- Zhejiang Sci-Tech University
- State Key Laboratory of ATMMT(MOE)
- Hangzhou 310018
| | - Xuming Zheng
- Department of Chemistry and Engineering Research Center for Eco-dyeing and Finishing of Textiles
- MOE
- Zhejiang Sci-Tech University
- State Key Laboratory of ATMMT(MOE)
- Hangzhou 310018
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35
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Ran L, Zhao D, Gao X, Yin L. Highly crystalline Ti-doped SnO2 hollow structured photocatalyst with enhanced photocatalytic activity for degradation of organic dyes. CrystEngComm 2015. [DOI: 10.1039/c5ce00184f] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a facile infiltration route for synthesizing hollow-structured SnO2 with an adjustable Ti doping content using SiO2 microspheres as hard templates via an improved Stober method.
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Affiliation(s)
- Lei Ran
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Shandong University
- Jinan 250061, PR China
| | - Danyang Zhao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Shandong University
- Jinan 250061, PR China
| | - Xueping Gao
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Shandong University
- Jinan 250061, PR China
| | - Longwei Yin
- Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials
- Ministry of Education
- School of Materials Science and Engineering
- Shandong University
- Jinan 250061, PR China
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36
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Ansari MO, Khan MM, Ansari SA, Cho MH. Electrically conductive polyaniline sensitized defective-TiO2 for improved visible light photocatalytic and photoelectrochemical performance: a synergistic effect. NEW J CHEM 2015. [DOI: 10.1039/c5nj01127b] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A proposed scheme for the synthesis of s-Pani@m-TiO2 nanocomposites.
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Affiliation(s)
- Mohd Omaish Ansari
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si
- South Korea
| | | | - Sajid Ali Ansari
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si
- South Korea
| | - Moo Hwan Cho
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan-si
- South Korea
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37
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Wang W, Xiao Y, Wang X, Liu B, Cao M. In situ encapsulation of germanium clusters in carbon nanofibers: high-performance anodes for lithium-ion batteries. CHEMSUSCHEM 2014; 7:2914-2922. [PMID: 25154731 DOI: 10.1002/cssc.201402304] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 06/15/2014] [Indexed: 06/03/2023]
Abstract
Alloyed anode materials for lithium-ion batteries (LIBs) usually suffer from considerable capacity losses during charge-discharge process. Herein, in situ-grown germanium clusters are homogeneously encapsulated into porous nitrogen-doped carbon nanofibers (N-CNFs) to form Ge/N-CNFs hybrids, using a facile electrospinning method followed by thermal treatment. When used as anode in LIBs, the Ge/N-CNFs hybrids exhibit excellent lithium storage performance in terms of specific capacity, cycling stability, and rate capability. The excellent electrochemical properties can be attributed to the unique structural features: the distribution of the germanium clusters, porous carbon nanofibers, and GeN chemical bonds all contribute to alleviating the large volume changes of germanium during the discharge-charge process, while at same time the unique porous N-CNFs not only increase the contact area between the electrode and the electrolyte, but also the conductivity of the hybrid.
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Affiliation(s)
- Wei Wang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic Electrophotonic, Conversion Materials, Department of Chemistry, Beijing Institute of Technology, Beijing 100081 (PR China)
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38
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Xie Z, Liu X, Wang W, Liu C, Li Z, Zhang Z. Enhanced photoelectrochemical properties of TiO 2 nanorod arrays decorated with CdS nanoparticles. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2014; 15:055006. [PMID: 27877718 PMCID: PMC5099679 DOI: 10.1088/1468-6996/15/5/055006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2014] [Accepted: 09/02/2014] [Indexed: 06/01/2023]
Abstract
TiO2 nanorod arrays (TiO2 NRAs) sensitized with CdS nanoparticles were fabricated via successive ion layer adsorption and reaction (SILAR), and TiO2 NRAs were obtained by oxidizing Ti NRAs obtained through oblique angle deposition. The TiO2 NRAs decorated with CdS nanoparticles exhibited excellent photoelectrochemical and photocatalytic properties under visible light, and the one decorated with 20 SILAR cycles CdS nanoparticles shows the best performance. This can be attributed to the enhanced separation of electrons and holes by forming heterojunctions of CdS nanoparticles and TiO2 NRAs. This provides a promising way to fabricate the material for solar energy conversion and wastewater degradation.
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Affiliation(s)
- Zheng Xie
- The State Key Laboratory for New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
- High-Tech Institute of Xi’an, Shannxi 710025, People’s Republic of China
| | - Xiangxuan Liu
- High-Tech Institute of Xi’an, Shannxi 710025, People’s Republic of China
| | - Weipeng Wang
- The State Key Laboratory for New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Can Liu
- The State Key Laboratory for New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Zhengcao Li
- The State Key Laboratory for New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
| | - Zhengjun Zhang
- Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
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39
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Kapilashrami M, Zhang Y, Liu YS, Hagfeldt A, Guo J. Probing the Optical Property and Electronic Structure of TiO2 Nanomaterials for Renewable Energy Applications. Chem Rev 2014; 114:9662-707. [DOI: 10.1021/cr5000893] [Citation(s) in RCA: 379] [Impact Index Per Article: 37.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Mukes Kapilashrami
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Yanfeng Zhang
- College
of Chemistry and Material Science, Hebei Normal University, Shijiazhuang, Hebei 050024, People’s Republic of China
| | - Yi-Sheng Liu
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Anders Hagfeldt
- Physical
Chemistry, Department of Chemistry−Ångström Laboratory, Uppsala University, 751 20 Uppsala, Sweden
| | - Jinghua Guo
- Advanced
Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
- Department
of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
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40
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Wang D, Zhang H, Guo J, Xu H, Zhu X, Jiao Z. Template-free fabrication of rattle-type TiO2hollow microspheres with superior photocatalytic performance. RSC Adv 2014. [DOI: 10.1039/c4ra04075a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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41
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Synergistic effect on the visible light activity of Ti3+ doped TiO2 nanorods/boron doped graphene composite. Sci Rep 2014; 4:5493. [PMID: 24974890 PMCID: PMC4074785 DOI: 10.1038/srep05493] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 06/11/2014] [Indexed: 01/20/2023] Open
Abstract
TiO2/graphene (TiO2-x/GR) composites, which are Ti(3+) self-doped TiO2 nanorods decorated on boron doped graphene sheets, were synthesized via a simple one-step hydrothermal method using low-cost NaBH4 as both a reducing agent and a boron dopant on graphene. The resulting TiO2 nanorods were about 200 nm in length with exposed (100) and (010) facets. The samples were characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy, X-band electron paramagnetic resonance (EPR), X-ray photoelectron spectra (XPS), transmission electron microscope (TEM), Raman, and Fourier-transform infrared spectroscopy (FTIR). The XRD results suggest that the prepared samples have an anatase crystalline structure. All of the composites tested exhibited improved photocatalytic activities as measured by the degradation of methylene blue and phenol under visible light irradiation. This improvement was attributed to the synergistic effect of Ti(3+) self-doping on TiO2 nanorods and boron doping on graphene.
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42
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He Z, Que W, He Y. Enhanced photocatalytic performance of sensitized mesoporous TiO2nanoparticles by carbon mesostructures. RSC Adv 2014. [DOI: 10.1039/c3ra46389c] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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43
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Wang B, Lu XY, Yu LK, Xuan J, Leung MKH, Guo H. Facile synthesis of TiO2 hollow spheres composed of high percentage of reactive facets for enhanced photocatalytic activity. CrystEngComm 2014. [DOI: 10.1039/c4ce00826j] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In this study, facile synthesis of hollow TiO2 spheres composed of a high percentage of reactive facets (~85%) is successfully prepared with TiOSO4 and HBF4 by the hydrothermal method.
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Affiliation(s)
- Bin Wang
- Ability R&D Energy Research Centre
- School of Energy and Environment
- City University of Hong Kong
- Hong Kong, China
- Green Energy
| | - Xiao-Ying Lu
- Faculty of Science and Technology
- Technological and Higher Education Institute of Hong Kong
- Hong Kong, China
| | - Lawrence K. Yu
- Green Energy
- Sensing & Integration Group
- Hong Kong Applied Science and Technology Research Institute Company Limited
- Hong Kong, China
- Department of Chemical and Biological Engineering
| | - Jin Xuan
- Institute of Mechanical, Process and Energy Engineering
- School of Engineering & Physical Sciences
- Heriot-Watt University
- Edinburgh EH14 4AS, UK
| | - Michael K. H. Leung
- Ability R&D Energy Research Centre
- School of Energy and Environment
- City University of Hong Kong
- Hong Kong, China
| | - Hongfan Guo
- College of Chemical Engineering
- Shenyang University of Chemical Technology
- Shenyang, China
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44
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Lü R, Zhou W, Shi K, Yang Y, Wang L, Pan K, Tian C, Ren Z, Fu H. Alumina decorated TiO2 nanotubes with ordered mesoporous walls as high sensitivity NO(x) gas sensors at room temperature. NANOSCALE 2013; 5:8569-8576. [PMID: 23892951 DOI: 10.1039/c3nr01903a] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Alumina (Al2O3) decorated anatase TiO2 nanotubes with ordered mesoporous pore walls (Al2O3/meso-TiO2 nanotubes) are successfully synthesized through vacuum pressure induction technology, and then combined with the thermal decomposition of a mesoporous TiO2 sol precursor, inside the cylindrical nanochannels of an anodic aluminium oxide (AAO) template. The decorated Al2O3 was formed by in situ deposition via direct reaction of the strong acid sol precursor and the nanochannel wall of the AAO template. The resultant Al2O3/meso-TiO2 nanotubes are characterized in detail by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, and N2 adsorption-desorption. The experimental results reveal that the Al2O3/meso-TiO2 nanotubes have a tubular structure with an average diameter of ∼200 nm and highly ordered mesopores in the tubular walls. The Al2O3 is distributed evenly on the anatase TiO2 nanotubes. Moreover, the Al2O3/meso-TiO2 nanotubes possess a large specific surface area (136 m(2) g(-1)) and narrow mesopore size distribution (∼10 nm). By using NO(x) as a probe molecule, the Al2O3/meso-TiO2 nanotube films exhibit better sensing performance than that of mesoporous TiO2 nanotubes, in terms of their high sensitivity, fast response-recovery time, and good stability in air at room temperature. The outstanding performance in the gas sensing ability of Al2O3/meso-TiO2 nanotubes is a result of their one-dimensional tubular and mesoporous nanostructures, advantageous for the adsorption and diffusion of NO(x) gas. In addition, the sensing response is greatly improved by virtue of the decorated Al2O3 on the surfaces of the TiO2 nanotubes, which acts as an energy barrier to suppress charge recombination. The structural properties of the Al2O3/meso-TiO2 nanotubes makes them a viable novel gas sensor material at room temperature.
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Affiliation(s)
- Renjiang Lü
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
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45
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Caretti I, Zamani S, Beyers E, Cool P, Van Doorslaer S. Effects of copper and vanadium deposition in multi-walled hydrogen trititanate and mixed-phase anatase/trititanate nanotubes. Dalton Trans 2013; 42:12148-56. [PMID: 23609025 DOI: 10.1039/c3dt00061c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal incorporation and doping is one of the routes commonly explored to improve visible light photocatalytic activity of titania and related materials. In this work, we explore the effect of copper and vanadium deposition and incorporation in multi-walled hydrogen trititanate and mixed-phase anatase/trititanate nanotubes. The molecular designed dispersion method is used to introduce the metals in the materials. Electron paramagnetic resonance facilitates a full characterization of the metal sites before and after calcination and allows determining the UV- and visible-light-induced formation of paramagnetic intermediates. Vanadium or copper deposition on the tubes leads to increased formation of F(+) centres under visible or UV illumination. The EPR results are linked to the activity towards rhodamine 6G photobleaching of the different materials.
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Affiliation(s)
- Ignacio Caretti
- Department of Physics, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium
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46
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Rabani J, Goldstein S. Mechanisms of Reactions Induced by Photocatalysis of Titanium Dioxide Nanoparticles. ENVIRONMENTAL PHOTOCHEMISTRY PART III 2013. [DOI: 10.1007/698_2013_248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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47
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Xia Y, Yin L. Core–shell structured α-Fe2O3@TiO2 nanocomposites with improved photocatalytic activity in the visible light region. Phys Chem Chem Phys 2013; 15:18627-34. [DOI: 10.1039/c3cp53178c] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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48
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Hahn R, Stark M, Killian MS, Schmuki P. Photocatalytic properties of in situ doped TiO2-nanotubes grown by rapid breakdown anodization. Catal Sci Technol 2013. [DOI: 10.1039/c3cy00021d] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Wu J, Yin L, Zhang L. Tuning the electronic structure, bandgap energy and photoluminescence properties of hexagonal boron nitride nanosheets via a controllable Ce3+ ions doping. RSC Adv 2013. [DOI: 10.1039/c3ra23132a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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50
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Wang X, Li Z, Li Q, Wang C, Chen A, Zhang Z, Fan R, Yin L. Ordered mesoporous SnO2 with a highly crystalline state as an anode material for lithium ion batteries with enhanced electrochemical performance. CrystEngComm 2013. [DOI: 10.1039/c3ce40087e] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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