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Li T, Li Y, Guo C, Hu Y. Dual-defect semiconductor photocatalysts for solar-to-chemical conversion: advances and challenges. Chem Commun (Camb) 2024; 60:2320-2348. [PMID: 38314591 DOI: 10.1039/d3cc06102g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
Among the renewable energy technologies to deal with increasing energy crisis and environmental concerns, solar-to-chemical conversion via photocatalysis holds great promise for sustainable energy supply. To date, a variety of modification strategies with different types of semiconducting materials have been proposed to boost photocatalytic efficiency. Recently, dual-defect semiconductor photocatalysts have emerged as an advantageous candidate with superior performance in improving photocatalytic activity compared to their defect-free or single-defect counterparts. In this review, focus is laid on the advances of dual-defect semiconductor photocatalysts for energy photocatalysis. Possible schemes for two different defects within a single semiconductor are firstly sorted based on the types of defects, and synthesis strategies to achieve various defect schemes as well as techniques to characterize different defects are then introduced. In particular, the effect of different defects on photocatalytic performance is emphasized, and the advances in dual-defect semiconductors for solar-to-chemical conversions are summarized based on different defect schemes. Finally, the future challenges and opportunities of dual-defect semiconductors for photocatalysis are discussed. This article is expected to provide an overall insight into existing dual-defect semiconductor photocatalysts and inspire the development of new defect-rich materials for photocatalytic energy production.
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Affiliation(s)
- Tianqi Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, China.
| | - Yufeng Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, China.
| | - Changfa Guo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, China.
| | - Yong Hu
- College of Chemistry and Materials Engineering, Zhejiang A&F University, Hangzhou, 311300, China.
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2
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Liu Y, Dai X, Li J, Cheng S, Zhang J, Ma Y. Recent progress in TiO 2-biochar-based photocatalysts for water contaminants treatment: strategies to improve photocatalytic performance. RSC Adv 2024; 14:478-491. [PMID: 38173568 PMCID: PMC10759041 DOI: 10.1039/d3ra06910a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
Toxic organic pollutants in wastewater have seriously damaged human health and ecosystems. Photocatalytic degradation is a potential and efficient tactic for wastewater treatment. Among the entire carbon family, biochar has been developed for the adsorption of pollutants due to its large specific surface area, porous skeleton structure, and abundant surface functional groups. Hence, combining adsorption and photocatalytic decomposition, TiO2-biochar photocatalysts have received considerable attention and have been extensively studied. Owing to biochar's adsorption, more active sites and strong interactions between contaminants and photocatalysts can be achieved. The synergistic effect of biochar and TiO2 nanomaterials substantially improves the photocatalytic capacity for pollutant degradation. TiO2-biochar composites have numerous attractive properties and advantages, culminating in infinite applications. This review discusses the characteristics and preparation techniques of biochar, presents in situ and ex situ synthesis approaches of TiO2-biochar nanocomposites, explains the benefits of TiO2-biochar-based compounds for photocatalytic degradation, and emphasizes the strategies for enhancing the photocatalytic efficiency of TiO2-biochar-based photocatalysts. Finally, the main difficulties and future advancements of TiO2-biochar-based photocatalysis are highlighted. The review gives an exhaustive overview of recent progress in TiO2-biochar-based photocatalysts for organic contaminants removal and is expected to encourage the development of robust TiO2-biochar-based photocatalysts for sewage remediation and other environmentally friendly uses.
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Affiliation(s)
- Yunfang Liu
- School of Sciences, Beihua University Jilin 132013 China
| | - Xiaowei Dai
- Department of Reproductive Medicine Center, The Second Norman Bethune Hospital of Jilin University Changchun 130041 China
| | - Jia Li
- School of Sciences, Beihua University Jilin 132013 China
| | - Shaoheng Cheng
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University Changchun 130012 China
| | - Jian Zhang
- School of Sciences, Beihua University Jilin 132013 China
| | - Yibo Ma
- School of Sciences, Beihua University Jilin 132013 China
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3
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Varghese D, Joe Raja Ruban M, Joselene Suzan Jennifer P, AnnieCanisius D, Chakko S, Muthupandi S, Madhavan J, Victor Antony Raj M. Comprehensive analysis of NiFe 2O 4/MWCNTs nanocomposite to degrade a healthcare waste - tetracycline. RSC Adv 2023; 13:28339-28361. [PMID: 37767116 PMCID: PMC10520693 DOI: 10.1039/d3ra05398a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 09/18/2023] [Indexed: 09/29/2023] Open
Abstract
Tetracycline (TC), a commonly used antibiotic for studying bacterial illnesses in living organisms, poses a significant risk to the aquatic environment. Despite various conventional methods having been attempted to remove TC antibiotics from water solutions, they have not proven effective. Consequently, the focus of the research is on the photocatalytic degradation of TC. According to the research, MWCNTs were successfully incorporated into NiFe2O4 nanoparticles, which reduced the pace at which charge carriers recombined after joining with MWCNTs. Subsequently, the catalyst's efficacy was assessed in a batch reactor by analyzing the weight percentage change of the nanocomposite, the initial concentration of TC antibiotics, the effects of pH and contact time. The identical operational parameters were employed to investigate the degradation of TC using NiFe2O4 and MWCNTs as individual pure materials. The findings indicated that the photocatalytic process using NiFe2O4/MWCNTs achieved a degradation efficiency of 95.8% for TC at a pH value of 9. This result was obtained after a reaction time of 120 minutes, the concentration of TC solution was 10 mg L-1, with a nanocomposite dose of 0.6 g L-1 of TN 04 and 120 W m-2. The pseudo-first-order approach was used to estimate the rate at which TC degrades. After four consecutive uses, it was observed that the photocatalysts maintained their original properties, with only a slight decrease of approximately 2.4% in the removal efficiency. The study demonstrated that the NiFe2O4/MWCNTs nanocomposite exhibited considerable efficiency in degrading TC. Due to its simple manufacture and useful recovery, it has the potential to function well as a catalyst for the removal and degradation of pharmaceutical organic contaminants.
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Affiliation(s)
- Davis Varghese
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
- Loyola Institute of Frontier Energy, Loyola College Chennai 600034 India
| | - M Joe Raja Ruban
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
- Loyola Institute of Frontier Energy, Loyola College Chennai 600034 India
| | - P Joselene Suzan Jennifer
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
- Loyola Institute of Frontier Energy, Loyola College Chennai 600034 India
| | - D AnnieCanisius
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
- Loyola Institute of Frontier Energy, Loyola College Chennai 600034 India
| | - Seena Chakko
- PG and Research Department of Chemistry, Christ College Irinjalakuda 680125 India
| | - S Muthupandi
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
| | - J Madhavan
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
| | - M Victor Antony Raj
- Department of Physics, Loyola College, Affiliated to the University of Madras Chennai 600034 India
- Loyola Institute of Frontier Energy, Loyola College Chennai 600034 India
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Bio-Inspired C/N/TiO2 Hybrid Composite Heterostructure: Enhanced Photocatalytic Activity under Visible Light. JOURNAL OF NANOTECHNOLOGY 2022. [DOI: 10.1155/2022/5816063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The hydrothermal treatment was used to create a natural hierarchical bio-inspired carbon and nitrogen-doped C/N/TiO2 hybrid composite. It is the goal of this work to investigate the photocatalytic activity of bio-inspired C/N/TiO2 hybrid composite. Techniques such as X-ray powder diffraction, scanning electron microscopy, UV-Vis absorption spectroscopy, FTIR, Raman, and photoluminescence spectroscopy were used to explore the structural, morphological, and photocatalysis characteristics of the bio-inspired C/N/TiO2 hybrid composite. By doping carbon and nitrogen, TiO2 nanotubes were able to improve the photocatalyst properties of the C/N/TiO2 hybrid composite, decrease the energy band gap (∼2.55 eV), and result in increased electron transfer efficiency when compared to pure TiO2. The photocatalytic degradation of pollutants (rhodamine B (RhB)) is made possible by the use of a bio-inspired C/N/TiO2 hybrid composite that has high interconnectivity and an easily accessible surface.
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N and S co-doping of TiO2@C derived from in situ oxidation of Ti3C2 MXene for efficient persulfate activation and sulfamethoxazole degradation under visible light. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121460] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Zangeneh H, Farhadian M, Zinatizadeh AA. A reusable visible driven N and C-N doped TiO 2 magnetic nanocomposites for photodegradation of direct red 16 azo dye in water and wastewater. ENVIRONMENTAL TECHNOLOGY 2022; 43:1269-1284. [PMID: 32967578 DOI: 10.1080/09593330.2020.1825530] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
The visible active N-doped TiO2/ZnFe2O4 (urea-TiO2/ZnFe2O4) and CN-codoped TiO2/ZnFe2O4 (L-asparagine-TiO2/ZnFe2O4) nanocomposites were successfully synthesized by the sol-gel-hydrothermal method for direct red 16 (DR16) photodegradation. Their properties of the prepared nanocomposites were analysed using XRD, FT-IR, FE-SEM, EDX, DRS and PL tests. The DRS and PL results confirmed a narrow band-gap energy and low recombination rate of photo-produced electron and hole pairs, respectively. The effect of adding various dopant agents (urea and L-asparagine) with different loadings and magnetic nanoparticle (ZnFe2O4) into TiO2 sol on the photodegradation of DR16 was also evaluated. As a result, the L-asparagine (2 wt. %)-TiO2/ZnFe2O4 is the best photocatalyst compared to the other modified TiO2 nanocomposites due to its narrow band gap and high quantum efficiency. The catalyst concentration (1-2 g/L), DR16 concentration (25-45 ppm), initial pH (4-10), and irradiation time (30-90 min) as numerical variables were also considered for photocatalytic process analysis and moulding by central composite design (CCD). The increase in the pH and dye concentration reduces the photodegradation efficiency while irradiation time and catalyst concentration effectively improved its photodegradation efficiency. The DR16 was completely removed at 25 ppm of DR16, initial pH of 4 and 1.5 g/L of photocatalyst after 90-min irradiation. The photoactivity test was also repeated four times by reused L-asparagine-TiO2/ZnFe2O4 photocatalyst at optimum conditions. The decrease of dye degradation and loss of photocatalyst were not significant which was approved by the good performance and high recovery capability of the prepared nanocomposite.
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Affiliation(s)
- Hadis Zangeneh
- Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
- Environmental Research Center (ERC), Department of Applied Chemistry, Razi University, Kermanshah, Iran
| | - Mehrdad Farhadian
- Department of Chemical Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Iran
| | - Ali Akbar Zinatizadeh
- Environmental Research Center (ERC), Department of Applied Chemistry, Razi University, Kermanshah, Iran
- Department of Environmental Sciences, University of South Africa, Pretoria, South Africa
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Sienkiewicz A, Rokicka-Konieczna P, Wanag A, Kusiak-Nejman E, Morawski AW. Artificial Solar Light-Driven APTES/TiO2 Photocatalysts for Methylene Blue Removal from Water. Molecules 2022; 27:molecules27030947. [PMID: 35164212 PMCID: PMC8838937 DOI: 10.3390/molecules27030947] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 02/04/2023] Open
Abstract
A visible-light photocatalytic performance of 3-aminopropyltriethoxysilane (APTES)-modified TiO2 nanomaterials obtained by solvothermal modification under elevated pressure, followed by calcination in an argon atmosphere at 800–1000 °C, is presented for the first time. The presence of silicon and carbon in the APTES/TiO2 photocatalysts contributed to the effective delay of the anatase-to-rutile phase transformation and the growth of the crystallites size of both polymorphous forms of TiO2 during heating. Thus, the calcined APTES-modified TiO2 exhibited higher pore volume and specific surface area compared with the reference materials. The change of TiO2 surface charge from positive to negative after the heat treatment increased the adsorption of the methylene blue compound. Consequently, due to the blocking of active sites on the TiO2 surface, the adsorption process negatively affected the photocatalytic properties. All calcined photocatalysts obtained after modification via APTES showed a higher dye decomposition degree than the reference samples. For all 3 modifier concentrations tested, the best photoactivity was noted for nanomaterials calcined at 900 °C due to a higher specific surface area than materials calcined at 1000 °C, and a larger number of active sites available on the TiO2 surface compared with samples annealed at 800 °C. It was found that the optimum concentration for TiO2 modification, at which the highest dye decomposition degree was noted, was 500 mM.
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Effect of Calcination Conditions on the Properties and Photoactivity of TiO2 Modified with Biuret. Catalysts 2021. [DOI: 10.3390/catal11121546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A simple wet impregnation-calcination method was used to obtain a series of novel non-metal doped TiO2 photocatalysts. Biuret was applied as C and N source, while raw titanium dioxide derived from sulfate technology process was used as TiO2 and S source. The influence of the modification with biuret and the effect of the atmosphere (air or argon) and temperature (500–800 °C) of calcination on the physicochemical properties and photocatalytic activity of the photocatalysts towards ketoprofen decomposition under simulated solar light was investigated. Moreover, selected photocatalysts were applied for ketoprofen photodecomposition under visible and UV irradiation. Crucial features affecting the photocatalytic activity were the anatase to rutile phase ratio, anatase crystallites size and non-metals content. The obtained photocatalysts revealed improved activity in the photocatalytic ketoprofen decomposition compared to the crude TiO2. The best photoactivity under all irradiation types exhibited the photocatalyst calcined in the air atmosphere at 600 °C, composed of 96.4% of anatase with 23 nm crystallites, and containing 0.11 wt% of C, 0.05 wt% of N and 0.77 wt% of S.
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Fang M, Tan X, Liu Z, Hu B, Wang X. Recent Progress on Metal-Enhanced Photocatalysis: A Review on the Mechanism. RESEARCH 2021; 2021:9794329. [PMID: 34223177 PMCID: PMC8214360 DOI: 10.34133/2021/9794329] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 05/21/2021] [Indexed: 12/13/2022]
Abstract
Metal-enhanced photocatalysis has recently received increasing interest, mainly due to the ability of metal to directly or indirectly degrade pollutants. In this review, we briefly review the recent breakthroughs in metal-enhanced photocatalysis. We discussed the recent progress of surface plasmon resonance (SPR) effect and small size effect of metal nanoparticles on photocatalysis; in particular, we focus on elucidating the mechanism of energy transfer and hot electron injection/transfer effect of metal nanoparticles and clusters while as photocatalysts or as cophotocatalysts. Finally, we discuss the potential applications of metal-enhanced photocatalysis, and we also offer some perspectives for further investigations.
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Affiliation(s)
- Ming Fang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.,School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Xiaoli Tan
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhixin Liu
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Baowei Hu
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Xiangke Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.,School of Life Science, Shaoxing University, Shaoxing 312000, China
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Le TTT, Tran DT, Danh TH. Remarkable enhancement of visible light driven photocatalytic performance of TiO2 by simultaneously doping with C, N, and S. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111144] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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12
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Abstract
This article presents an overview of the reports on the doping of TiO2 with carbon, nitrogen, and sulfur, including single, co-, and tri-doping. A comparison of the properties of the photocatalysts synthesized from various precursors of TiO2 and C, N, or S dopants is summarized. Selected methods of synthesis of the non-metal doped TiO2 are also described. Furthermore, the influence of the preparation conditions on the doping mode (interstitial or substitutional) with reference to various types of the modified TiO2 is summarized. The mechanisms of photocatalysis for the different modes of the non-metal doping are also discussed. Moreover, selected applications of the non-metal doped TiO2 photocatalysts are shown, including the removal of organic compounds from water/wastewater, air purification, production of hydrogen, lithium storage, inactivation of bacteria, or carbon dioxide reduction.
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Chen W, Zhang H, Chen T, Yang L, Wu H, Tong Z, Mao N. TiO 2 modified orthocortical and paracortical cells having enhanced photocatalytic degradation and photoreduction properties. NANOTECHNOLOGY 2021; 32:025714. [PMID: 32992295 DOI: 10.1088/1361-6528/abbcab] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, cortical cells resultant from wool fibers were loaded with TiO2 nanoparticles in a hydrothermal process and were then engineered as organic-nonorganic hybrid composite photocatalysts for both photodegradation of organic dyes and photoreduction of heavy metal ions. The microstructure and photocatalytic properties of TiO2 modified cortical cells (i.e. both orthocortical and paracortical cells) were systematically characterized using a series of analytical techniques including FESEM, TEM, element analysis, Mott-Schottky curve, BET specific surface area, Zeta potentials, as well as XRD, FTIR, XPS, DRS, PL, UPS, EDS and ESR spectra. Their photocatalytic performance and trapping experiments of the TiO2 modified cortical cells were measured in the photodegradation of methylene blue (MB) dye and Congo Red (CR) dye as well as the photoreduction of Cr(VI) ions under visible light irradiation. It was found that anatase TiO2 nanoparticles were chemically grafted on the surface of the two cortical cells via O-Ti4+/O-Ti3+ bonds, and that TiO2 nanoparticles were formed inside the orthocortical cells in the hydrothermal process. The TiO2 modified orthocortical and paracortical cells possessed much higher photocatalytic efficiency than the commercially available TiO2 nanoparticle powder, Degussa P25, in the photodegradation of cationic MB dye and photoreduction of Cr(VI) ions, while their photocatalytic efficiency in the photodegradation of anionic CR dye is smaller because of their greater negative Zeta potentials and photogenerated holes as the main reactive radical species. In comparison with the TiO2 modified paracortical cells, the higher photocatalytic efficiency of the TiO2 modified orthocortical cells was demonstrated in the photodegradation of MB dye solution and this might be due to both the S-doped TiO2 nanoparticles infiltrated into the naturally hydrophilic orthocortical cells and the primary reactive radical species of photogenerated holes being trapped in the cells.
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Affiliation(s)
- Wendou Chen
- Research Centre for Functional Textile Materials, School of Textile Science & Engineering, Xi'an Polytechnic University, Xi'an 710048, People's Republic of China
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, Shaanxi 710048, People's Republic of China
| | - Hui Zhang
- Research Centre for Functional Textile Materials, School of Textile Science & Engineering, Xi'an Polytechnic University, Xi'an 710048, People's Republic of China
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, Shaanxi 710048, People's Republic of China
| | - Tianyu Chen
- Research Centre for Functional Textile Materials, School of Textile Science & Engineering, Xi'an Polytechnic University, Xi'an 710048, People's Republic of China
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, Shaanxi 710048, People's Republic of China
| | - Limeng Yang
- Research Centre for Functional Textile Materials, School of Textile Science & Engineering, Xi'an Polytechnic University, Xi'an 710048, People's Republic of China
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, Shaanxi 710048, People's Republic of China
| | - Hailiang Wu
- Key Laboratory of Functional Textile Material and Product (Xi'an Polytechnic University), Ministry of Education, Xi'an, Shaanxi 710048, People's Republic of China
| | - Zhi Tong
- School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, People's Republic of China
| | - Ningtao Mao
- School of Design, University of Leeds, Leeds, LS2 9JT, United Kingdom
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Fang M, Tan X, Liu Z, Hu B, Wang X. Recent Progress on Metal-Enhanced Photocatalysis: A Review on the Mechanism. RESEARCH 2021; 2021. [DOI: doi.org/10.34133/2021/9794329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/25/2023]
Abstract
Metal-enhanced photocatalysis has recently received increasing interest, mainly due to the ability of metal to directly or indirectly degrade pollutants. In this review, we briefly review the recent breakthroughs in metal-enhanced photocatalysis. We discussed the recent progress of surface plasmon resonance (SPR) effect and small size effect of metal nanoparticles on photocatalysis; in particular, we focus on elucidating the mechanism of energy transfer and hot electron injection/transfer effect of metal nanoparticles and clusters while as photocatalysts or as cophotocatalysts. Finally, we discuss the potential applications of metal-enhanced photocatalysis, and we also offer some perspectives for further investigations.
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Affiliation(s)
- Ming Fang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Xiaoli Tan
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhixin Liu
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Baowei Hu
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Xiangke Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
- School of Life Science, Shaoxing University, Shaoxing 312000, China
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15
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Review on bimetallic-deposited TiO2: preparation methods, charge carrier transfer pathways and photocatalytic applications. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00995-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Non-metal (Oxygen, Sulphur, Nitrogen, Boron and Phosphorus)-Doped Metal Oxide Hybrid Nanostructures as Highly Efficient Photocatalysts for Water Treatment and Hydrogen Generation. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2019. [DOI: 10.1007/978-3-030-10609-6_3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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17
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Meethal BN, Swaminathan S. Bromine‐Induced Defects in Anion‐Deficient Zinc Oxide as Stable Photocatalysis Promoters. ChemistrySelect 2018. [DOI: 10.1002/slct.201802795] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sindhu Swaminathan
- Department of Nanoscience and TechnologyUniversity of Calicut Kerala-673635
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Gorle G, Bathinapatla A, Chen YZ, Ling YC. Near infrared light activatable PEI-wrapped bismuth selenide nanocomposites for photothermal/photodynamic therapy induced bacterial inactivation and dye degradation. RSC Adv 2018; 8:19827-19834. [PMID: 35540975 PMCID: PMC9080770 DOI: 10.1039/c8ra02183j] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 05/01/2018] [Indexed: 11/21/2022] Open
Abstract
Inactivation of bacteria and degradation of organic pollutants by engineered nanomaterials (NMs) are very effective approaches in producing safe and clean drinking water.
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Affiliation(s)
- Govinda Gorle
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | | | - Yi-Zhan Chen
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
| | - Yong-Chien Ling
- Department of Chemistry
- National Tsing Hua University
- Hsinchu 30013
- Taiwan
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Zhang C, Cao A, Chen L, Lv K, Wu T, Deng K. One-step topological preparation of carbon doped and coated TiO2 hollow nanocubes for synergistically enhanced visible photodegradation activity. RSC Adv 2018; 8:21431-21443. [PMID: 35539909 PMCID: PMC9080932 DOI: 10.1039/c8ra02427h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/31/2018] [Indexed: 11/21/2022] Open
Abstract
Various three-dimensional TiO2 hollow structures have attracted strong scientific and technological attention due to their excellent properties. 3D hierarchical TiO2 hollow nanocubes (TiO2-HNBs) are not good candidates for industrial photocatalytic applications due to their large energy gap which is only activated by UV light. Herein, visible-light-responsive carbon doped and coated TiO2-HNBs (C@TiO2-HNBs) with a dominant exposure of {001} facets have been prepared via a template-engaged topotactic transformation process using facile one-step solvothermal treatment and a solution containing ethanol, glucose and TiOF2. The effects of reaction time and glucose/TiOF2 mass ratio on the structure and performance of C@TiO2-HNBs were systematically studied. We found that glucose played an important role in providing H2O during the topological transformation from self-templated TiOF2 cubes into 3D hierarchical TiO2 hollow nanocubes versus dehydration reactions, where its main function was as a carbon source. Coated carbon was deposited predominantly on the surface as sp2 graphitic carbon in extended p conjugated graphite-like environments, and doped carbon mainly replaced Ti atoms in the surface lattice to form a carbonate structure. The results were confirmed using TEM SEM, EDS, XRD, FT-IR, XPS and Raman spectroscopic studies. The C@TiO2-HNBs achieved greatly improved RhB photodegradation activity under visible light irradiation. The catalyst prepared with glucose/TiOF2 at a mass ratio of 0.15 (T24-0.15) showed the highest photodegradation rate of 96% in 40 min, which is 7.0 times higher than those of the TiO2-HNBs and P25. This new synthetic approach proposes a novel way to construct carbon hybridized 3D hierarchical TiO2 hollow nanocubes by combining two modification methods, “element doped” and “surface sensitized”, at the same time. Herein, visible-light-responsive carbon doped and coated TiO2-HNBs have been prepared via a template-engaged topotactic transformation process. ![]()
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Affiliation(s)
- Chengjiang Zhang
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Amin Cao
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Lianqing Chen
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
- Department of Chemistry
| | - Kangle Lv
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
| | - Tsunghsueh Wu
- Department of Chemistry
- University of Wisconsin-Platteville
- Platteville
- USA
| | - Kejian Deng
- Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education
- South-Central University for Nationalities
- Wuhan
- P. R. China
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