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Fu X, Tao J, Zhao Z, Sun S, Zhao L, He Z, Gao Y, Xia Y. Interfacial S-O bonds specifically boost Z-scheme charge separation in a CuInS 2/In 2O 3 heterojunction for efficient photocatalytic activity. RSC Adv 2023; 13:8227-8237. [PMID: 36922941 PMCID: PMC10009657 DOI: 10.1039/d3ra00043e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 03/06/2023] [Indexed: 03/14/2023] Open
Abstract
Reducing the recombination rate of photoexcited electron-hole pairs is always a great challenging work for the photocatalytic technique. In response to this issue, herein, a novel Z-scheme CuInS2/In2O3 with interfacial S-O linkages was synthesized by a hydrothermal and subsequently annealing method. The Fourier transform infrared (FT-IR) and X-ray photoelectron spectrometer (XPS) measurements confirmed the formation of covalent S-O bonds between CuInS2 and In2O3. The quenching and electron spin resonance (ESR) tests revealed the Z-scheme transfer route of photogenerated carriers over the CuInS2/In2O3 heterojunctions, which was further verified theoretically via density functional theory (DFT) calculations. As expected, the CuInS2/In2O3 heterojunctions showed significantly boosted photocatalytic activities for lomefloxacin degradation and Cr(vi) reduction under visible light illumination compared with the bare materials. Accordingly, a synergistic photocatalytic mechanism of Z-scheme heterostructures and interfacial S-O bonding was proposed, in which the S-O linkage could act as a specific bridge to modify the Z-scheme manner for accelerating the interfacial charge transmission. Furthermore, the CuInS2/In2O3 heterojunction also exhibited excellent performance perceived in the stability and reusability tests. This work provides a new approach for designing and fabricating novel Z-scheme heterostructures with a high-efficiency charge transfer route.
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Affiliation(s)
- Xiaofei Fu
- School of Resources and Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Junwu Tao
- School of Resources and Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Zizhou Zhao
- School of Resources and Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Siwen Sun
- School of Resources and Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Lin Zhao
- School of Resources and Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Zuming He
- School of Microelectronics and Control Engineering, Changzhou University Changzhou 213164 China
| | - Yong Gao
- School of Resources and Environmental Engineering, Jiangsu University of Technology Changzhou 213001 China
| | - Yongmei Xia
- School of Materials and Engineering, Jiangsu University of Technology Changzhou 213001 China
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2
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Xiong J, Li H, Zhou J, Di J. Recent progress of indium-based photocatalysts: Classification, regulation and diversified applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Sun N, Zhou M, Ma X, Cheng Z, Wu J, Qi Y, Sun Y, Zhou F, Shen Y, Lu S. Self-assembled spherical In2O3/BiOI heterojunctions for enhanced photocatalytic CO2 reduction activity. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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4
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Devi P, Verma R, Singh JP. Advancement in electrochemical, photocatalytic, and photoelectrochemical CO2 reduction: Recent progress in the role of oxygen vacancies in catalyst design. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Mai X, Lin W, Chen J, Yang Q, Gao R. Synthesis of Z-scheme (001)-TiO2/Bi5O7I heterojunctions with enhanced interfacial charge separation and photocatalytic degradation of Rhodamine B. REACTION KINETICS MECHANISMS AND CATALYSIS 2022. [DOI: 10.1007/s11144-022-02309-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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MXene-derived Anatase-TiO2/rutile-TiO2/In2O3 Heterojunctions toward Efficient Hydrogen Evolution. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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7
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Liu J, Feng C, Li Y, Zhang Y, Liang Q, Xu S, Li Z, Wang S. Photocatalytic detoxification of hazardous pymetrozine pesticide over two-dimensional covalent-organic frameworks coupling with Ag3PO4 nanospheres. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Jia T, Luo F, Wu J, Chu F, Xiao Y, Liu Q, Pan W, Li F. Nanosized Zn-In spinel-type sulfides loaded on facet-oriented CeO 2 nanorods heterostructures as Z-scheme photocatalysts for efficient elemental mercury removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 813:151865. [PMID: 34813819 DOI: 10.1016/j.scitotenv.2021.151865] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/17/2021] [Accepted: 11/17/2021] [Indexed: 06/13/2023]
Abstract
Developing of effective photocatalysts is of great significance for realizing photocatalytic environment purification. Herein, an interfacial bent bands and internal electric field modulated CeO2/ZnIn2S4 Z-scheme heterojunction for photocatalytic Hg0 oxidation. It is found that the charge transfer mechanism of Z-scheme was driven by the interfacial bent bands and internal electric field, which was confirmed by electrochemical measurements, electron spin paramagnetic resonance spectroscopy and density functional theory calculations. Moreover, the (110) dominant CeO2 nanorods partially converted Ce4+ to Ce3+ and formed oxygen vacancies, and as an electron mediator in Z-scheme systems to further facilitate charge transfer process and molecular oxygen activation. Under the strong synergistic effect between the large specific surface area, Z-scheme heterojunction and oxygen vacancies, the optimized photocatalyst exhibits 86.7% of photocatalytic removal efficiency. This work provides Z-scheme heterojunction photocatalyst design perspective for photocatalytic air purification.
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Affiliation(s)
- Tao Jia
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Fei Luo
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 201306, China
| | - Jiang Wu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China.
| | - Fenghong Chu
- College of Electronics and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Yixuan Xiao
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Qizhen Liu
- Shanghai Environment Monitoring Center, Shanghai 200030, China
| | - Weiguo Pan
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Fengting Li
- State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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9
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Ponkshe A, Thakur P. Solar light-driven photocatalytic degradation and mineralization of beta blockers propranolol and atenolol by carbon dot/TiO 2 composite. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:15614-15630. [PMID: 34628578 DOI: 10.1007/s11356-021-16796-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
Herein improved solar light-driven photocatalytic degradation and mineralization of two emerging pollutants as well as recalcitrant beta blockers propranolol (PR) and atenolol (AT) have been demonstrated by metal-free carbon dot/TiO2 (CDT) composite. Hydrothermally synthesized TiO2 has been decorated with electrochemically synthesized carbon dots (CDs) and was well characterized by various analytical techniques viz. XRD, FTIR, Raman, XPS, UV-visible DRS, FESEM, and TEM. The optimized CDT composite, 2CDT (2 mL carbon dot/TiO2), showed ~ 3.45- and ~ 1.75-fold enhancement in the photodegradation rate as compared to pristine TiO2 for PR and AT respectively in 1 hour of irradiation along with complete degradation of PR and AT after 3 hours of irradiation. 2CDT exhibited 76% and 80% mineralization of PR and AT in contrast with 62% and 47% observed by pristine TiO2. Further, the major reaction intermediates formed after degradation have been identified by HPLC/MS analysis, confirming more than 99% reduction of the parent compound for both PR and AT. Reusability of the optimized catalyst also showed successful degradation up to 3 cycles, showing reduction abilities of 97%, 95%, and 94% for 1st, 2nd, and 3rd cycle respectively. The enhanced degradation and mineralization efficiency of the 2CDT composite could be attributed to the excellent photosensitizer and electron reservoir properties of the CD along with upconverted photoluminescence behavior. The present study unlocks the possibility of using metal-free, facile CDT composite for effective degradation and mineralization of widely used beta blockers and other pharmaceuticals.
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Affiliation(s)
- Amruta Ponkshe
- Department of Environmental Sciences, Savitribai Phule Pune University, Ganeshkhind, Pune, 411007, India
| | - Pragati Thakur
- epartment of Chemistry, Savitribai Phule Pune University, Ganeshkhind, Pune , 411007, India.
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Reñones P, Fresno F, Oropeza FE, de la Peña O’Shea VA. Improved Methane Production by Photocatalytic CO 2 Conversion over Ag/In 2O 3/TiO 2 Heterojunctions. MATERIALS 2022; 15:ma15030843. [PMID: 35160788 PMCID: PMC8837040 DOI: 10.3390/ma15030843] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/14/2022] [Accepted: 01/20/2022] [Indexed: 02/06/2023]
Abstract
In this work, the role of In2O3 in a heterojunction with TiO2 is studied as a way of increasing the photocatalytic activity for gas-phase CO2 reduction using water as the electron donor and UV irradiation. Depending on the nature of the employed In2O3, different behaviors appear. Thus, with the high crystallite sizes of commercial In2O3, the activity is improved with respect to TiO2, with modest improvements in the selectivity to methane. On the other hand, when In2O3 obtained in the laboratory, with low crystallite size, is employed, there is a further change in selectivity toward CH4, even if the total conversion is lower than that obtained with TiO2. The selectivity improvement in the heterojunctions is attributed to an enhancement in the charge transfer and separation with the presence of In2O3, more pronounced when smaller particles are used as in the case of laboratory-made In2O3, as confirmed by time-resolved fluorescence measurements. Ternary systems formed by these heterojunctions with silver nanoparticles reflect a drastic change in selectivity toward methane, confirming the role of silver as an electron collector that favors the charge transfer to the reaction medium.
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11
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Enhanced photocatalytic activity on elemental mercury over pink BiOIO3 nanosheets with abundant oxygen vacancies. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-021-0925-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Huang H, Zhang T, Cai X, Guo Z, Fan S, Zhang Y, Lin C, Gan T, Hu H, Huang Z. In Situ One-Pot Synthesis of C-Decorated and Cl-Doped Sea-Urchin-like Rutile Titanium Dioxide with Highly Efficient Visible-Light Photocatalytic Activity. ACS APPLIED MATERIALS & INTERFACES 2021; 13:60337-60350. [PMID: 34889099 DOI: 10.1021/acsami.1c17081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Titanium dioxide (TiO2) that offers high light-harvesting capacity and efficient charge separation holds great promise in photocatalysis. In this work, an in situ one-pot hydrothermal synthesis was explored to prepare a C-decorated and Cl-doped sea-urchin-like rutile TiO2 (Cl-TiO2/C). The growth of sea-urchin-like 3D hierarchical nanostructures was governed by a mechanism of nucleation and nuclei growth-dissolution-recrystallization growth from time-dependent morphology evolution. The crystal morphology and the content of Cl and C could be controlled by the volume ratio of HCl to TBOT. Systematic studies indicated that the 0.4Cl-TiO2/C sample (the volume ratio of HCl to TBOT was 0.4) exhibited the highest visible-light photocatalytic activity for the degradation of rhodamine B, with kinetic rate constant (k) of 0.0221 min-1, being 6.5 and 3.75 times higher than that of TiO2 and Cl-TiO2. The enhanced photocatalytic performance could be attributed to the high charge separation and transfer efficiency induced by Cl-doping and C decoration and the excellent light-harvesting capacity caused by its sea-urchin-like nanostructure. Moreover, the 0.4Cl-TiO2/C sample exhibited good reusability and excellent structural stability for five cycles. This facile one-pot approach provides new insight for the preparation of a TiO2-based photocatalyst with excellent photocatalytic performance for potential application in practical wastewater treatment.
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Affiliation(s)
- Hongmiao Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
- School of Pharmacy, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Tongtong Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Xiunan Cai
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Zhanjing Guo
- School of Pharmacy, Guangxi University of Chinese Medicine, Nanning, Guangxi 530200, China
| | - Songlin Fan
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Yanjuan Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Cuiwu Lin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Tao Gan
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Huayu Hu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
| | - Zuqiang Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China
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13
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Sun J, Li B, Wang Q, Zhang P, Zhang Y, Gao L, Li X. Preparation of phosphorus-doped tungsten trioxide nanomaterials and their photocatalytic performances. ENVIRONMENTAL TECHNOLOGY 2021; 42:4104-4114. [PMID: 32194007 DOI: 10.1080/09593330.2020.1745292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 03/14/2020] [Indexed: 06/10/2023]
Abstract
In this study, a highly efficient and stable phosphorus-doped Tungsten trioxide (P-WO3) photocatalyst was successfully synthesized using a combination of hydrothermal and post-calcination method. The microstructures, morphologies and optical properties of the obtained WO3 and P-WO3 samples were characterized. The results showed that P was uniformly doped into the WO3 lattice in a pentavalent-oxidation state (P5+). The charge carrier traps were also formed, which could accept the photoelectrons. Furthermore, the band gap energy was reduced from 2.4 to 2.33 ev. The photocatalytic performance of the obtained P-WO3 samples with different P concentrations were then tested by photocatalytic degradation of methyl blue (MB). It was found that the 6%-P-WO3 sample exhibited the highest photocatalytic activity, with 96% of MB being able to be degraded within 120 min, which was more than four times higher than that of the pure WO3. The practicality of the prepared P-WO3 was also evaluated using samples from two domestic wastewater treatment plants. The P-WO3 had a high photodegradation performance in treating low concentration of organic matters from real wastewater. The photocatalysis of P-WO3 could be mainly initiated by the production of hydroxyl radical (·OH) and photogenerated hole (h+).
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Affiliation(s)
- Jiayu Sun
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Bihan Li
- College of Life Science, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Qi Wang
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Ping Zhang
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Yulei Zhang
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, People's Republic of China
| | - Li Gao
- Future Water Strategy Group, South East Water, Melbourne, Australia
| | - Xiaochen Li
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, People's Republic of China
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Guan Y, Liu Y, Lv Q, Wu J. Bismuth-based photocatalyst for photocatalytic oxidation of flue gas mercury removal: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126280. [PMID: 34102357 DOI: 10.1016/j.jhazmat.2021.126280] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 05/06/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
Photocatalytic oxidation method is a promising technology for solving flue gas mercury (Hg) pollution from industrial plants. Semiconductor photocatalysts have been widely applied in energy conversion and environmental remediation. However, key issues such as low light absorption capacity, wide energy band gap, and poor physicochemical stability severely limit the application of photocatalysts in practical industrial plants. In recent years, bismuth-based (Bi-based) photocatalysts, including bismuth oxide halide BiOX (X = Cl, Br or I), bismuth salt oxymetal BiVO4, and BiOIO3 etc., have increasingly aroused scientists' attention due to their peculiar crystalline geometric structures, tunable electronic structure and high photocatalytic performance. In present review, we firstly review the photocatalytic reaction mechanism and main photocatalytic oxidation mechanism of mercury. Secondly, the synthetic methods of Bi-based photocatalysts are summarized. Then, according to the mechanism of mercury removal, the experimental modifying approaches including heterojunction making, external atoms doping, defect creating, and crystal face regulating to promote the photocatalytic oxidation of mercury removal are summarized, as well as the determination of the band gap and electronic density of states (DOS) of Bi-based photocatalysts to elucidate the photocatalytic oxidation mechanism via density functional theory (DFT) calculation. Furthermore, constructing electronic transmission channels is an efficient way to improve the photocatalytic activity. Finally, challenges and perspectives of Bi-based photocatalyst for photocatalytic oxidation of mercury removal are presented. In addition, the excellent performance photocatalysts and efficient pollution removal equipment for mercury removal in industrial plants are still required in-depth study.
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Affiliation(s)
- Yu Guan
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China; College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
| | - Yinhe Liu
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Qiang Lv
- State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiang Wu
- College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China.
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Liang Q, Zhao S, Li Z, Wu Z, Shi H, Huang H, Kang Z. Converting Organic Wastewater into CO Using MOFs-Derived Co/In 2O 3 Double-Shell Photocatalyst. ACS APPLIED MATERIALS & INTERFACES 2021; 13:40754-40765. [PMID: 34423971 DOI: 10.1021/acsami.1c12800] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The photocatalytic conversion of organic wastewater into value-added chemicals is a promising strategy to solve the environmental issue and energy crisis. Herein, Co/In2O3 nanotubes with a double-shell structure, as a highly efficient photocatalyst, are synthesized by a one-step calcination method. The Co/In2O3 heterostructure shows an outstanding photocatalytic CO2 reduction performance of 4902 μmol h-1 g-1. Notably, these Co/In2O3 photocatalysts also achieve CO2 self-generation and in situ reduction conversion in acid organic wastewater (phenol solution), in which the high CO2 (47.5 μmol h-1 g-1) and CO (0.9 μmol h-1 g-1) evolution rates are demonstrated under solar irradiation. Transient photovoltage (TPV) tests demonstrate that Co nanoparticles on Co/In2O3 double-shell heterostructure serve as the CO2 reduction sites for the effective capture and stabilization of the photogenerated electrons.
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Affiliation(s)
- Qian Liang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Shuang Zhao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Zhongyu Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Zhenyu Wu
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Hong Shi
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Hui Huang
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
| | - Zhenhui Kang
- Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China
- Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Taipa 999078, Macau SAR, China
- Institute of Advanced Materials, Northeast Normal University, Changchun 130024, China
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16
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Li J, Liu L, Liang Q, Zhou M, Yao C, Xu S, Li Z. Core-shell ZIF-8@MIL-68(In) derived ZnO nanoparticles-embedded In 2O 3 hollow tubular with oxygen vacancy for photocatalytic degradation of antibiotic pollutant. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125395. [PMID: 33652218 DOI: 10.1016/j.jhazmat.2021.125395] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/21/2020] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
Developing a novel core-multishelled metal oxide hollow tube with rich oxygen vacancy is highly attractive in photocatalytic degradation of antibiotic pollutant. Herein, ZnO@In2O3 core-shell hollow microtubes were synthesized via one-step calcination of ZIF-8@MIL-68(In) formed by an in-situ self-assembly. TEM images demonstrate that 0D ZnO quantum dots (QDs) shell with 0.2 µm were well coated on the surface of 1D In2O3 hollow tube as the core with 1.2 µm. The synthesized heterostructure indicates the enhanced photocatalytic performance in tetracycline (TC) degradation compared with single ZIF-derived ZnO and MIL-68(In)-derived In2O3 under simulated solar irradiation. Besides, organic pollutants including malachite green (MG), methylene blue (MB) and rhodamine B (RhB) are further used to evaluate the photocatalytic activity of ZnO@In2O3, and the effect of weight ratios between ZnO and In2O3 on degradation efficiency is also studies. The ZnO@In2O3 heterojunction can provide higher specific surface area, expose more active sites, possess appropriate number of oxygen vacancies, enhance light absorption and further effectively boost the transfer and separation of photoinduced charge carriers. In addition, the proposed photocatalytic mechanism and degradation pathway are discussed in detail based on active species trapping test, electron spin resonance (ESR) and LCMS.
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Affiliation(s)
- Juxin Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China
| | - Lijuan Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China
| | - Qian Liang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China.
| | - Man Zhou
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China
| | - Chao Yao
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China
| | - Song Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China
| | - Zhongyu Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China; School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, PR China.
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Elavarasan M, Uma K, Yang TCK. Nanocubes phase adaptation of In2O3/TiO2 heterojunction photocatalysts for the dye degradation and tracing of adsorbed species during photo-oxidation of ethanol. J Taiwan Inst Chem Eng 2021. [DOI: 10.1016/j.jtice.2021.03.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Visible light induced selective photocatalytic reduction of CO2 to CH4 on In2O3-rGO nanocomposites. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2020.101376] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Abstract
TiO2 has been widely used as a photocatalyst and an electrode material toward the photodegradation of organic pollutants and electrochemical applications, respectively. However, the properties of TiO2 are not enough up to meet practical needs because of its intrinsic disadvantages such as a wide bandgap and low conductivity. Incorporation of carbon into the TiO2 lattice is a promising tool to overcome these limitations because carbon has metal-like conductivity, high separation efficiency of photogenerated electron/hole pairs, and strong visible-light absorption. This review would describe and discuss a variety of strategies to develop carbon-doped TiO2 with enhanced photoelectrochemical performances in environmental, energy, and catalytic fields. Emphasis is given to highlight current techniques and recent progress in C-doped TiO2-based materials. Meanwhile, how to tackle the challenges we are currently facing is also discussed. This understanding will allow the process to continue to evolve and provide facile and feasible techniques for the design and development of carbon-doped TiO2 materials.
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Xin F, Ma S, Yang J, Zhao Y, Zhang J, Zheng C. Photocatalytic removal of elemental mercury via Ce-doped TiO 2 catalyst coupling with a novel optical fiber monolith reactor. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:21281-21291. [PMID: 32270458 DOI: 10.1007/s11356-020-08477-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 03/16/2020] [Indexed: 05/11/2023]
Abstract
Reduction of mercury emission from coal combustion is a serious task for public health and environmental societies. Herein, Ce-doped TiO2 (Ce/TiO2) catalyst coupling with a novel optical fiber monolith reactor was applied to efficiently remove elemental mercury (Hg0) from coal-fired flue gas. Under the optimal operation condition (i.e., 1.5 mW/cm2 UV light, 90 °C), above 95% of Hg0 removal efficiency was attained over the optical fiber monolith reactor coating with 3.40 g/m2 Ce/TiO2 catalyst. The effects of flue gas compositions on Hg0 removal performance were clarified systematically. Gaseous O2 replenished the surface oxygen, hence maintaining the production of free radicals and promoting the removal of Hg0. SO2, HCl, and NO inhibited Hg0 removal in the absence of O2 due to the competitive adsorption and consumption of free radicals. However, SO2 and HCl significantly enhanced Hg0 removal with the participation of O2, while NO exhibited obviously inhibitory effect even with the assistance of O2. H2O also decreased the Hg0 oxidation capacity owing to the competitive adsorption and reduction of HgO. The optical fiber monolith reactor exhibited much superior Hg0 removal capacity than the powder reactor. Utilization of Ce/TiO2 catalyst coupling with an optical fiber monolith reactor provides a cost-effective method for removing Hg0 from coal-fired flue gas.
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Affiliation(s)
- Feng Xin
- School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha, 410076, China
| | - Siming Ma
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Jianping Yang
- School of Energy Science and Engineering, Central South University, Changsha, 410083, China
| | - Yongchun Zhao
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Junying Zhang
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chuguang Zheng
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China
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Abstract
Some co-catalyst nanoparticles can enhance the activity of photocatalysts due to prolonging the charge separation lifetime by promoting the electron or hole transfer. CuO particles were prepared from an aqueous solution of copper (II) nitrate at 351 K on a TiO2 surface by a photocatalytic reaction and heating at 573 or 673 K. The amount and size of the particles deposited during the photocatalytic reaction can be controlled by changing the amount of the irradiated photons. The CuO crystals with about 50−250 nm-sized particles were formed. Nitrate ions were reduced to nitrite ions in the solution by the photocatalytic activity of the TiO2, and water was simultaneously transformed into hydroxide ions. An increase in the basicity on the TiO2 surface induced formation of a copper hydroxide. The copper hydroxide was subsequently dehydrated and transformed into CuO by heating. The TiO2 loading of a small amount of CuO demonstrated a higher photocatalytic activity for methylene blue degradation compared to the original TiO2 due to the electron transfer from the TiO2 conduction bands to the CuO conduction band.
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Qiu J, Liu F, Yue C, Ling C, Li A. A recyclable nanosheet of Mo/N-doped TiO 2 nanorods decorated on carbon nanofibers for organic pollutants degradation under simulated sunlight irradiation. CHEMOSPHERE 2019; 215:280-293. [PMID: 30321808 DOI: 10.1016/j.chemosphere.2018.09.182] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/19/2018] [Accepted: 09/30/2018] [Indexed: 05/25/2023]
Abstract
A novel nanosheet of Mo/N-codoped TiO2 nanorods immobilized on carbon nanofibers (MNTC nanosheet) was self-synthesized through two facile steps. The Mo/N-doped TiO2 nanorods dispersed through in situ growth on the network constructed by long and vertical carbon nanofibers (CNFs). The fabricated MNTC nanosheet displayed superb photocatalytic activity of methylene blue (MB), and the degradation ratio by the MNTC nanosheet was nearly twice than that of pure nanoparticles. The photocatalytic activities during the degradation process in the presence of environmental media such as inorganic salts and natural organic matter (NOM) were also determined. Intermediates were analyzed by ion chromatography and electrospray ionization-mass spectrometry to unravel the potential degradation pathways, and the excellent mineralization ratio for MB over MNTC nanosheet was 79.8%. The trapping active species experiments verified that h+ was the main active species in the degradation process. Notably, the recycling experiment proved that the MNTC nanosheet was more stable, and it was successfully applied in purifying practical wastewater. Lastly, the fabricated MNTC nanosheet also displayed remarkable degradation performance towards sulfamethoxazole and bisphenol A.
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Affiliation(s)
- Jinli Qiu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Fuqiang Liu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal Resource Reuse, Nanjing 210023, PR China.
| | - Cailiang Yue
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Chen Ling
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China; State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal Resource Reuse, Nanjing 210023, PR China
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23
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Zhang X, Li L, Zhou Q, Cao Y, Ma F, Li Y. Three-dimensionally ordered hollow sphere array Pt/In2O3–TiO2 with improved photocatalytic efficiency. NEW J CHEM 2019. [DOI: 10.1039/c9nj01488h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using polystyrene microspheres as the template, the three-dimensionally ordered hollow sphere array Pt/In2O3–TiO2 was established, which exhibited superior photocatalytic degradation efficiency and an enhanced activity in hydrogen evolution.
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Affiliation(s)
- Xinyue Zhang
- College of Materials Science and Engineering, Qiqihar University
- Qiqihar
- China
- College of Chemistry and Chemical Engineering, Qiqihar University
- Qiqihar
| | - Li Li
- College of Materials Science and Engineering, Qiqihar University
- Qiqihar
- China
- College of Chemistry and Chemical Engineering, Qiqihar University
- Qiqihar
| | - Qianlong Zhou
- College of Chemistry and Chemical Engineering, Qiqihar University
- Qiqihar
- China
| | - Yanzhen Cao
- College of Chemistry and Chemical Engineering, Qiqihar University
- Qiqihar
- China
| | - Fengyan Ma
- College of Chemistry and Chemical Engineering, Qiqihar University
- Qiqihar
- China
| | - Yi Li
- College of Chemistry and Chemical Engineering, Qiqihar University
- Qiqihar
- China
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24
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Enhanced photocatalytic activity of TiO2/graphene by tailoring oxidation degrees of graphene oxide for gaseous mercury removal. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0148-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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25
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Enhanced photocatalytic activity of TiO2 by micrometer-scale flower-like morphology for gaseous elemental mercury removal. CATAL COMMUN 2018. [DOI: 10.1016/j.catcom.2018.08.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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26
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Fabrication of Carbon-Modified BiOI/BiOIO3 Heterostructures With Oxygen Vacancies for Enhancing Photocatalytic Activity. Catal Letters 2018. [DOI: 10.1007/s10562-018-2558-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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27
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Wu M, Zhang J, Liu C, Gong Y, Wang R, He B, Wang H. Rational Design and Fabrication of Noble-metal-free Nix
P Cocatalyst Embedded 3D N
-TiO2
/g-C3
N4
Heterojunctions with Enhanced Photocatalytic Hydrogen Evolution. ChemCatChem 2018. [DOI: 10.1002/cctc.201800197] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mao Wu
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
| | - Jin Zhang
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
| | - Chunxiao Liu
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
| | - Yansheng Gong
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
- Engineering Research Center of Nano-Geomaterials, of Ministry of Education; China University of Geosciences; 388 Lumo Road Wuhan 430074 P.R. China
| | - Rui Wang
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
| | - Beibei He
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
| | - Huanwen Wang
- Faculty of Materials Science and Chemistry; China University of Geosciences; Wuhan 430074 P.R. China
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