1
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Chen D, Gong K, Xu X, Huang C, Lei P. Enhancing the adsorption-photocatalytic efficiency of BiOBr for Congo red degradation by tuning the surface charge and bandgap via an Y 3+-I - co-doping strategy. Phys Chem Chem Phys 2024; 26:17155-17170. [PMID: 38847473 DOI: 10.1039/d4cp00876f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Metal-ion doping and halogen substitution have been largely applied to tune the bandgap of bismuth oxybromide (BiOBr) to upgrade its photodegradation capacity. In this work, the adsorption capacity and photocatalytic behavior of solvothermally synthesized BiOBr photocatalysts can be optimized via the synergistic effect of Y3+- and I--doping. After an adsorption reaction in the dark and exposure for another 80 min to visible light, pure BiOBr can remove 46.5% of Congo red (CR) from water with an initial CR concentration of 50 mg L-1. Meanwhile, Bi0.8Y0.20OBr0.97I0.03, the co-doped catalyst, displays total degradation rates exceeding 98% and 92% with CR dosages of 50 and 100 mg L-1, respectively, demonstrating a doubled degradation capacity. With the co-doping solution, the negative charges on the catalysts reduce, more oxygen vacancies are generated, the bandgap remarkably narrows, and the photoabsorption range broadens for derivation of photoinduced electron-hole pairs. The mechanism for optimized photodegradation behavior and dramatically increased adsorption capacity are discussed based on analyses of the structural evolution, surface properties including the chemical state and surface charge, electrochemical performance and the yield/type of photogenerated species. Density functional theory (DFT) simulations were conducted to investigate the structural state, density of states (DOS) and electrostatic potential.
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Affiliation(s)
- Dongsheng Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
| | - Keqian Gong
- State Key Laboratory of New Ceramics and Fine Processing, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084, China
| | - Xiangyang Xu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
- Hunan Key Laboratory of Mineral Materials and Applications, Changsha 410083, China
| | - Chenyu Huang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
| | - Pengtao Lei
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
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2
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Yang S, Zhang W, Pan G, Chen J, Deng J, Chen K, Xie X, Han D, Dai M, Niu L. Photocatalytic Co-Reduction of N 2 and CO 2 with CeO 2 Catalyst for Urea Synthesis. Angew Chem Int Ed Engl 2023; 62:e202312076. [PMID: 37667537 DOI: 10.1002/anie.202312076] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/03/2023] [Accepted: 09/04/2023] [Indexed: 09/06/2023]
Abstract
The effective conversion of carbon dioxide (CO2 ) and nitrogen (N2 ) into urea by photocatalytic reaction under mild conditions is considered to be a more environmentally friendly and promising alternative strategies. However, the weak adsorption and activation ability of inert gas on photocatalysts has become the main challenge that hinder the advancement of this technique. Herein, we have successfully established mesoporous CeO2-x nanorods with adjustable oxygen vacancy concentration by heat treatment in Ar/H2 (90 % : 10 %) atmosphere, enhancing the targeted adsorption and activation of N2 and CO2 by introducing oxygen vacancies. Particularly, CeO2 -500 (CeO2 nanorods heated treatment at 500 °C) revealed high photocatalytic activity toward the C-N coupling reaction for urea synthesis with a remarkable urea yield rate of 15.5 μg/h. Besides, both aberration corrected transmission electron microscopy (AC-TEM) and Fourier transform infrared (FT-IR) spectroscopy were used to research the atomic surface structure of CeO2 -500 at high resolution and to monitor the key intermediate precursors generated. The reaction mechanism of photocatalytic C-N coupling was studied in detail by combining Density Functional Theory (DFT) with specific experiments. We hope this work provides important inspiration and guiding significance towards highly efficient photocatalytic synthesis of urea.
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Affiliation(s)
- Shuyi Yang
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Wensheng Zhang
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Guoliang Pan
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Jiaying Chen
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Jiayi Deng
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Ke Chen
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Xianglun Xie
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
| | - Dongxue Han
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
- Guangdong Provincial Key Laboratory of Psychoactive Substances Monitoring and Safety, Anti-Drug Technology Center of Guangdong Province, Guangzhou, 510230, P. R. China
| | - Mengjiao Dai
- State Key Laboratory of Electroanalytical Chemistry, c/o Engineering Laboratory for Modern Analytical Techniques, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Li Niu
- Guangzhou Key Laboratory of Sensing Materials & Devices, Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, P. R. China
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P. R. China
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3
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Yang X, Wu L, Zhang B, Li J, Shen Y, Liu Y, Hu Y. Fabrication of a P-Si/ZnO heterojunction based on galvanic cell driven and the complete degradation of RhB via fast charge transfer. NANOSCALE 2023; 15:16323-16332. [PMID: 37796041 DOI: 10.1039/d3nr04078j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Semiconductor heterojunctions can significantly enhance photocatalytic degradation efficiency by facilitating rapid interfacial charge transfer. This article is based on the galvanic-cell driven principle; porous silicon (P-Si) was prepared by the carbon-catalytic etching method, and ZnO was loaded on its surface via electroless chemical deposition technology to form a P-Si/ZnO heterojunction, which was applied to the degradation of Rhodamine B (RhB). At a deposition temperature of 90 °C, a flawless 1D hexagonal prism structure of ZnO was formed, allowing the P-Si/ZnO heterojunction to completely degrade RhB within 2 hours with a degradation rate of 100%. Compared with a single P-Si material, the degradation performance is improved by 1.7 times. The formation of the built-in electric field and the rapid charge transfer at the heterojunction interface realized the complete degradation of RhB organic pollutants. After 20 cycles of use, the photocatalytic degradation rate remains above 70%, demonstrating excellent stability and recyclability.
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Affiliation(s)
- Xiaoyu Yang
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Lin Wu
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
- Academy of Green Manufacturing Engineering, Wuhan University of science and technology, Wuhan 430081, China
| | - Baoguo Zhang
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Jingwang Li
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Yifan Shen
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Ying Liu
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
| | - Ya Hu
- Key Laboratory of Hubei Province for Coal Conversion and New Carbon Materials, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
- Academy of Green Manufacturing Engineering, Wuhan University of science and technology, Wuhan 430081, China
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4
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Mao Z, Hao W, Wang W, Ma F, Ma C, Chen S. BiOI@CeO 2@Ti 3C 2 MXene composite S-scheme photocatalyst with excellent bacteriostatic properties. J Colloid Interface Sci 2023; 633:836-850. [PMID: 36495806 DOI: 10.1016/j.jcis.2022.11.140] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/23/2022] [Accepted: 11/27/2022] [Indexed: 11/30/2022]
Abstract
As an influential antifouling material, photocatalytic materials have drawn attention increasingly over recent years owing to their potential bacteriostatic property in the domain of marine antifouling. Herein, a flower-like BiOI@CeO2@Ti3C2 S-scheme photocatalyst was contrived and prepared by hydrothermal method. The innovative combination of Ti3C2 and narrow band gap semiconductor BiOI was implemented to modify CeO2 and the photocatalytic bacteriostatic mechanism of BiOI@CeO2@Ti3C2 was elucidated. Schottky junction was formed between CeO2 and Ti3C2, and a p-n junction was formed between CeO2 and BiOI. By photoelectrochemical characterization, BCT-10 exhibits the best photoelectrochemical performance of which photogenerated carrier transport can be performed more readily at 10 % CeO2@Ti3C2 addition. 99.76 % and 99.89 % of photocatalytic bacteriostatic efficiency of BCT-10 against Escherichia coli and Staphylococcus aureus were implemented respectively, which were 2.98 and 3.07 times higher than that of pure CeO2. The ternary heterojunction can suppress photogenerated electron-hole complexes more effectively and enhance the photocatalytic bacteriostatic effect of CeO2, which also provided a new concept to the further broadened application of CeO2 in the marine bacteriostatic and antifouling field.
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Affiliation(s)
- Zhipeng Mao
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, P. R. China
| | - Wei Hao
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, P. R. China
| | - Wei Wang
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, P. R. China.
| | - Fubin Ma
- Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), 168 Wenhai Middle Road, Qingdao, 266237, P. R. China; Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266000, P. R. China
| | - Chengcheng Ma
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, P. R. China
| | - Shougang Chen
- School of Materials Science and Engineering, Ocean University of China, Qingdao, 266100, P. R. China.
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5
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Zhou Y, Zhou Y, Chen A, Zhang J. Enhanced Photocatalytic Degradation of RhB by Plasmonic Type‐II Ag/Ag
2
MoO
4
/BiOI Heterojunction. ChemistrySelect 2022. [DOI: 10.1002/slct.202202310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yi Zhou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation School of Chemistry and Chemical Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Yinghong Zhou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation School of Chemistry and Chemical Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Anna Chen
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation School of Chemistry and Chemical Engineering Changsha University of Science and Technology Changsha 410114 China
| | - Jin Zhang
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation School of Chemistry and Chemical Engineering Changsha University of Science and Technology Changsha 410114 China
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6
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Gong X, Li Z, Yu M, Yu H, Wang S, Shao H, Cheng Y, Dou M, Li D, Li S, Chen Y. Construction of Three‐Dimensional In‐Zn‐Cd‐S Composite Materials and Their Visible‐Light Catalytic Performance. ChemistrySelect 2022. [DOI: 10.1002/slct.202200705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xiaoyu Gong
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Zhiqiang Li
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Minghui Yu
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Hao Yu
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Shuang Wang
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Hongyu Shao
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Yuye Cheng
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Minghao Dou
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Danni Li
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Shenjie Li
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
| | - Yanyan Chen
- School of Chemistry and Chemical Engineering Hefei University of Technology Hefei, Anhui 230009 People's Republic of China
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7
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Gao Q, Sun K, Cui Y, Wang S, Liu C, Liu B. In situ growth of 2D/3D Bi2MoO6/CeO2 heterostructures toward enhanced photodegradation and Cr(VI) reduction. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120312] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Zhang S, Wang C, Wu T, Fan D, Hu L, Wang H, Wei Q, Wu D. A sandwiched photoelectrochemical biosensing platform for detecting Cytokeratin-19 fragments based on Ag 2S-sensitized BiOI/Bi 2S 3 heterostructure amplified by sulfur and nitrogen co-doped carbon quantum dots. Biosens Bioelectron 2022; 196:113703. [PMID: 34656853 DOI: 10.1016/j.bios.2021.113703] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 10/09/2021] [Indexed: 01/20/2023]
Abstract
A sandwiched photoelectrochemical (PEC) immunosensor based on BiOI/Bi2S3/Ag2S was designed for the quantitative detection of cytokeratin-19 fragments (CYFRA21-1) in serum. In this work, due to the intervention of the narrow band gap Bi2S3, the absorption of the light source by the BiOI/Bi2S3 heterostructure has been significantly enhanced. Meanwhile, the matched band structure of BiOI, Bi2S3 and Ag2S promoted the rapid transfer of electrons between the conduction bands and effectively inhibited the recombination of electron-hole pairs, thus enhanced the photoelectric signals. Sulfur and nitrogen co-doped carbon quantum dots (S,N-CQDs) with up-conversion luminescence properties provided more light energy for the base materials. On the other hand, S,N-CQDs were combined with Ab2 through polydopamine (PDA), as secondary antibody labels, further enhanced the sensitivity of the sensor. Herein, the linear range of the sensor was from 0.001 to 100 ng mL-1 and the detection limit was 1.72 pg mL-1. In addition, the sensor provides a feasible way for the detection of tumor markers due to its excellent selectivity, repeatability and good stability.
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Affiliation(s)
- Shitao Zhang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Chao Wang
- Department of Rehabilitation, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, 250021, Shandong, China
| | - Tingting Wu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Dawei Fan
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Lihua Hu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Huan Wang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Dan Wu
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, Shandong, China.
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9
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Fauzi AA, Jalil AA, Hassan NS, Aziz FFA, Azami MS, Hussain I, Saravanan R, Vo DVN. A critical review on relationship of CeO 2-based photocatalyst towards mechanistic degradation of organic pollutant. CHEMOSPHERE 2022; 286:131651. [PMID: 34346345 DOI: 10.1016/j.chemosphere.2021.131651] [Citation(s) in RCA: 54] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 05/21/2021] [Accepted: 07/21/2021] [Indexed: 06/13/2023]
Abstract
Nanostructured photocatalysts commonly offered opportunities to solve issues scrutinized with the environmental challenges caused by steep population growth and rapid urbanization. This photocatalyst is a controllable characteristic, which can provide humans with a clean and sustainable ecosystem. Over the last decades, one of the current thriving research focuses on visible-light-driven CeO2-based photocatalysts due to their superior characteristics, including unique fluorite-type structure, rigid framework, and facile reducing oxidizing properties of cerium's tetravalent (Ce4+) and trivalent (Ce3+) valence states. Notwithstanding, owing to its inherent wide energy gap, the solar energy utilization efficiency is low, which limits its application in wastewater treatment. Numerous modifications of CeO2 have been employed to enhance photodegradation performances, such as metals and non-metals doping, adding support materials, and coupling with another semiconductor. Besides, all these doping will form a different heterojunction and show a different way of electron-hole migration. Compared to conventional heterojunction, advanced heterojunction types such as p-n heterojunction, Z-scheme, Schottky junction, and surface plasmon resonance effect exhibit superior performance for degradation owing to their excellent charge carrier separation, and the reaction occurs at a relatively higher redox potential. This review attends to providing deep insights on heterojunction mechanisms and the latest progress on photodegradation of various contaminants in wastewater using CeO2-based photocatalysts. Hence, making the CeO2 photocatalyst more foresee and promising to further development and research.
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Affiliation(s)
- A A Fauzi
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
| | - A A Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia; Centre of Hydrogen Energy, Institute of Future Energy, UTM Johor Bahru, 81310, Johor, Malaysia.
| | - N S Hassan
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
| | - F F A Aziz
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Johor, Malaysia
| | - M S Azami
- Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Malaysia
| | - I Hussain
- Faculty of Science, Universiti Teknologi Malaysia, UTM Johor Bahru, 81310, Malaysia
| | - R Saravanan
- Faculty of Engineering, Department of Mechanical Engineering, University of Tarapacá, Avda, General Velasquez, 1775 Arica, Chile
| | - D-V N Vo
- Center of Excellence for Green Energy and Environmental Nanomaterials (CE@GrEEN), Nguyen Tat Thanh University, 300A Nguyen Tat Thanh, District 4, Ho Chi Minh City, 755414, Viet Nam
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10
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Recent Advances in MnOx/CeO2-Based Ternary Composites for Selective Catalytic Reduction of NOx by NH3: A Review. Catalysts 2021. [DOI: 10.3390/catal11121519] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Recently, manganese oxides (MnOx)/cerium(IV) oxide (CeO2) composites have attracted widespread attention for the selective catalytic reduction (SCR) of nitrogen oxides (NOx) with ammonia (NH3), which exhibit outstanding catalytic performance owing to unique features, such as a large oxygen storage capacity, excellent low-temperature activity, and strong mechanical strength. The intimate contact between the components can effectively accelerate the charge transfer to enhance the electron–hole separation efficiency. Nevertheless, MnOx/CeO2 still reveals some deficiencies in the practical application process because of poor thermal stability, and a low reduction efficiency. Constructing MnOx/CeO2 with other semiconductors is the most effective strategy to further improve catalytic performance. In this article, we discuss progress in the field of MnOx/CeO2-based ternary composites with an emphasis on the SCR of NOx by NH3. Recent progress in their fabrication and application, including suitable examples from the relevant literature, are analyzed and summarized. In addition, the interaction mechanisms between MnOx/CeO2 catalysts and NOx pollutants are comprehensively dissected. Finally, the review provides basic insights into prospects and challenges for the advancement of MnOx/CeO2-based ternary catalysts.
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11
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Efficient hydrogen generation of vector Z-scheme CaTiO 3/Cu/TiO 2 photocatalyst assisted by cocatalyst Cu nanoparticles. J Colloid Interface Sci 2021; 605:373-384. [PMID: 34332411 DOI: 10.1016/j.jcis.2021.07.106] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/18/2021] [Accepted: 07/19/2021] [Indexed: 12/23/2022]
Abstract
Herein, the CaTiO3/Cu/TiO2 all-solid-state Z-scheme heterojunction is successfully designed via Cu nanoparticles situating at the interface between CaTiO3 and TiO2 with a new synthesis route. Interestingly, TiO2 nanosheets are generated in-situ on the surface of CaTiO3 in the second step hydrothermal reaction. The lifetimes of photoexcited carriers, photoluminescence emission spectra and transient photocurrent response tests have confirmed that the efficient Z-scheme charge transmission path of the CaTiO3/Cu/TiO2 is beneficial to facilitate the separation of photogenerated carriers and reduce their recombination efficiency. As expected, the hydrogen generation rate of CaTiO3/Cu/TiO2 is increased to 23.550 mmol g-1h-1 with the appropriate amount of copper loading, which is about 981 times and 93 times higher than that of pristine CaTiO3 (0.024 mmol g-1h-1) and CaTiO3/TiO2 (0.253 mmol g-1h-1), respectively. Furthermore, the CaTiO3/Cu/TiO2 sample shows good stability in cycle experiments. Particularly, experimental results show that the non-noble metal Cu nanoparticles can be an effective electron mediator. And these merits strongly demonstrate that the CaTiO3/Cu/TiO2 composites have potential application in photocatalytic field. This study can provide fundamental guidance for designing rationally efficient non-noble metal vector Z-scheme system photocatalysts with outstanding photocatalytic H2 generation performance.
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12
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Defect Engineering Enhances the Charge Separation of CeO 2 Nanorods toward Photocatalytic Methyl Blue Oxidation. NANOMATERIALS 2020; 10:nano10112307. [PMID: 33233419 PMCID: PMC7700514 DOI: 10.3390/nano10112307] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 11/17/2020] [Accepted: 11/18/2020] [Indexed: 12/23/2022]
Abstract
Defect-rich photocatalytic materials with excellent charge transfer properties are very popular. Herein, Sm-doped CeO2 nanorods were annealed in a N2 atmosphere to obtain the defective Sm-doped CeO2 photocatalysts (Vo–Sm–CeO2). The morphology and structure of Vo–Sm–CeO2 were systematically characterized. The Vo–Sm–CeO2 nanorods demonstrated an excellent photodegradation performance of methyl blue under visible light irradiation compared to CeO2 nanorods and Sm–CeO2. Reactive oxygen species including OH, ·O2−, and h+ were confirmed to play a pivotal role in the removal of pollutants via electron spin resonance spectroscopy. Doping Sm enhances the conductivity of CeO2 nanorods, benefiting photogenerated electrons being removed from the surface reactive sites, resulting in the superior performance.
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13
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Wang G, Ma X, Liu J, Qin L, Li B, Hu Y, Cheng H. Design and performance of a novel direct Z-scheme NiGa 2O 4/CeO 2 nanocomposite with enhanced sonocatalytic activity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 741:140192. [PMID: 32590130 DOI: 10.1016/j.scitotenv.2020.140192] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/05/2020] [Accepted: 06/11/2020] [Indexed: 05/26/2023]
Abstract
A novel direct Z-scheme NiGa2O4/CeO2 nanocomposite was designed and prepared via simple sol-hydrothermal and calcination methods, and its sonocatalytic activity was tested by studying the degradation of a model antimicrobial agent, malachite green (MG), under ultrasonic irradiation. Near complete (96.2%) degradation of MG (at 10 mg/L) could be achieved by the NiGa2O4/CeO2 nanocomposite (at 1.0 g/L) after ultrasonic irradiation (40 kHz, 300 W) for 60 min at 25 °C. Under the same conditions, only 51.2 and 72.0% of the MG degraded in the presence of NiGa2O4 and CeO2 (at 1.0 g/L), respectively. These results demonstrate that the direct Z-scheme NiGa2O4/CeO2 nanocomposite has excellent sonocatalytic activity, which is attributed to the matching band-gaps between NiGa2O4 and CeO2. The sonocatalytic activity of NiGa2O4/CeO2 nanocomposite decreased by 17% after four cycles of reuse, which is indicative of relatively good reusability. Scavenging experiments revealed that sonocatalytic degradation of MG results from the combined action of hydroxyl radicals (OH) and holes (h+), with the latter having a greater contribution. The pathways and mechanism of MG degradation were proposed based on the degradation intermediates detected. The results demonstrate that the prepared direct Z-scheme NiGa2O4/CeO2 nanocomposite worked as designed and exhibited high and stable sonocatalytic activity during MG degradation, and could thus serve as a promising candidate in sonocatalytic treatment of other organic pollutants in wastewaters. The findings also provide new insights on the mechanism of sonocatalytic degradation and the design of efficient Z-scheme sonocatalysts.
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Affiliation(s)
- Guowei Wang
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Xue Ma
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Jue Liu
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Lifan Qin
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China
| | - Bing Li
- MOE Laboratory of Groundwater Circulation and Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, PR China
| | - Yuanan Hu
- MOE Laboratory of Groundwater Circulation and Evolution, School of Water Resources and Environment, China University of Geosciences (Beijing), Beijing 100083, PR China
| | - Hefa Cheng
- MOE Key Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, PR China.
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14
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Duresa LW, Kuo DH, Huang HN. Room-temperature synthesized In-BiOBr 1-xI x nanosheets with visible-light-driven superior photocatalytic activity: Degradation of dye/non-dye organic pollutants for environmental remediation. CHEMOSPHERE 2020; 258:127374. [PMID: 32554021 DOI: 10.1016/j.chemosphere.2020.127374] [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: 04/18/2020] [Revised: 06/07/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
Photocatalysis is extensively investigated as a green, efficient and promising technique for environmental remediation. In this study, a series of template free In-doped BiOBrxI1-x photocatalysts have been successfully prepared at room temperature and characterized by various methods. Complete degradation of negatively charged methyl Orange, positively charged Rhodamine B and Methylene Blue organic dyes, and neutral and colorless non-dye organic compound of furfural was attained. The flat band potential offered the possibility of reduction of dissolved O2 to O2.- in the conduction band while the trapping experiment identified the (O2.-)is the main radical species followed by h+ for the photodegradation. In-BiOBrI-0.4 had an excellent photocatalytic degradation activity which could be due to the synergetic effect between metal ion doping and solid solution formation. It further promotes visible light-harvesting ability and photoinduced charge carrier separation efficiency. The order of the reaction rate was determined and the mechanism was proposed. This work can lay a base for the design of effective photocatalyst toward environmental remediation.
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Affiliation(s)
- Lalisa Wakjira Duresa
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan
| | - Dong-Hau Kuo
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, No.43, Sec. 4, Keelung Road, Taipei, 10607, Taiwan.
| | - Hsiu-Ni Huang
- Instrumentation Center, National Taiwan Normal University, No.162, Sec. 1, Heaping East Road, Taipei, 10607, Taiwan
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15
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Novel Z‐scheme In2S3/BiVO4 composites with improved visible-light photocatalytic performance and stability for glyphosate degradation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117039] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Fabrication of novel superhydrophobic ZIF-8 modified directly Z-scheme bismuth oxyiodide/cadmium sulfide melamine sponge for efficient oil/water separation and visible-light photodegradation. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124992] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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17
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Ultra-low loading of Ag2CrO4 on BiOI/CoFe2O4 microsphere with p-n heterojunction: Highly improved photocatalytic performance for Hg0 removal and mechanism insight. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112543] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Photocatalytic efficiency improvement of Z-scheme CeO2/BiOI heterostructure for RHB degradation and benzylamine oxidation under visible light irradiation. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.01.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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19
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Chen C, Li M, Jia Y, Chong R, Xu L, Liu X. Surface defect-engineered silver silicate/ceria p-n heterojunctions with a flower-like structure for boosting visible light photocatalysis with mechanistic insight. J Colloid Interface Sci 2020; 564:442-453. [DOI: 10.1016/j.jcis.2019.12.128] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 12/21/2019] [Accepted: 12/28/2019] [Indexed: 01/09/2023]
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20
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21
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Peng X, Wang C, Li Y, Ma H, Yu F, Che G, Yan J, Zhang X, Liu Y. Revisiting cocatalyst/TiO2 photocatalyst in blue light photothermalcatalysis. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.11.057] [Citation(s) in RCA: 10] [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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22
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Ma R, Zhang S, Wen T, Gu P, Li L, Zhao G, Niu F, Huang Q, Tang Z, Wang X. A critical review on visible-light-response CeO2-based photocatalysts with enhanced photooxidation of organic pollutants. Catal Today 2019. [DOI: 10.1016/j.cattod.2018.11.016] [Citation(s) in RCA: 170] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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23
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Sabzehmeidani MM, Karimi H, Ghaedi M. Visible light-induced photo-degradation of methylene blue by n–p heterojunction CeO2/CuS composite based on ribbon-like CeO2 nanofibers via electrospinning. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.05.040] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Yi J, Mo H, Zhang B, Song J, Liu D, Zhuo G. CeO2/Bi2MoO6 heterostructured microspheres with synergistic effect for accelerating photogenerated charge separation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.10.022] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Chen J, Hu C, Deng Z, Gong X, Su Y, Yang Q, Zhong J, Li J, Duan R. Insight into visible light-driven photocatalytic performance of direct Z-scheme Bi2WO6/BiOI composites constructed in -situ. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.12.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Luo J, Li R, Chen Y, Zhou X, Ning X, Zhan L, Ma L, Xu X, Xu L, Zhang L. Rational design of Z-scheme LaFeO3/SnS2 hybrid with boosted visible light photocatalytic activity towards tetracycline degradation. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.08.028] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Sridharan M, Kamaraj P, Huh YS, Devikala S, Arthanareeswari M, Selvi JA, Sundaravadivel E. Quaternary CZTS nanoparticle decorated CeO2 as a noble metal free p–n heterojunction photocatalyst for efficient hydrogen evolution. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00429g] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Practical implementation of photocatalytic hydrogen production has been required for the invention of efficient visible light absorption and low cost photocatalyst materials.
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Affiliation(s)
- M. Sridharan
- Department of Chemistry
- SRM Institute of Science and Technology
- Kattankulathur
- India
| | - P. Kamaraj
- Department of Chemistry
- SRM Institute of Science and Technology
- Kattankulathur
- India
| | - Yun Suk Huh
- Department of Biological Engineering
- College of Engineering
- INHA University
- Incheon
- Korea
| | - S. Devikala
- Department of Chemistry
- SRM Institute of Science and Technology
- Kattankulathur
- India
| | - M. Arthanareeswari
- Department of Chemistry
- SRM Institute of Science and Technology
- Kattankulathur
- India
| | - J. Arockia Selvi
- Department of Chemistry
- SRM Institute of Science and Technology
- Kattankulathur
- India
| | - E. Sundaravadivel
- Department of Chemistry
- SRM Institute of Science and Technology
- Kattankulathur
- India
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28
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Chen Y, Zhao C, Ma S, Xing P, Hu X, Wu Y, He Y. Fabrication of a Z-scheme AgBr/Bi4O5Br2 nanocomposite and its high efficiency in photocatalytic N2 fixation and dye degradation. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00782b] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Z-scheme AgBr/Bi4O5Br2 nanocomposite was synthesized via a simple ion-exchange method and firstly applied in photocatalytic N2 fixation under simulated sunlight.
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Affiliation(s)
- Yijing Chen
- Department of Materials Science and Engineering
- Zhejiang Normal University
- Jinhua
- China
| | - Chunran Zhao
- Department of Materials Science and Engineering
- Zhejiang Normal University
- Jinhua
- China
| | - Sanan Ma
- Department of Materials Science and Engineering
- Zhejiang Normal University
- Jinhua
- China
| | - Pingxing Xing
- Department of Materials Science and Engineering
- Zhejiang Normal University
- Jinhua
- China
| | - Xin Hu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua
- China
| | - Ying Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- Institute of Physical Chemistry
- Zhejiang Normal University
- Jinhua
- China
| | - Yiming He
- Department of Materials Science and Engineering
- Zhejiang Normal University
- Jinhua
- China
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
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29
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Nguyen TB, Huang CP, Doong RA. Photocatalytic degradation of bisphenol A over a ZnFe 2O 4/TiO 2 nanocomposite under visible light. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 646:745-756. [PMID: 30064101 DOI: 10.1016/j.scitotenv.2018.07.352] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/20/2018] [Accepted: 07/24/2018] [Indexed: 06/08/2023]
Abstract
A ZnFe2O4-TiO2 nanocomposite combining p-type ZnFe2O4 and n-type TiO2 was successfully fabricated. The ZnFe2O4-TiO2 nanocomposite greatly enhanced the bisphenol A (BPA) photodegradation under visible light irradiation at 465 ± 40 nm. Loading TiO2 with 1 wt% of ZnFe2O4 produced high photocurrent and low charge transfer resistance. The photodegradation rate of BPA by ZnFe2O4-TiO2, which was highly dependent on the water chemistry including pH, anions, and humic acid, was 20.8-21.4 times higher than that of commercial TiO2 photocatalysts. Chloride and sulfate ions enhanced BPA photodegradation mostly due to the production of more radical species; whereas nitrate, dihydrogen phosphate, and bicarbonate ions decreased the photodegradation rate of BPA due to the scavenge of hydroxyl radicals. The photoactivity and recyclability of ZnFe2O4-TiO2 in lake water was also assessed. A near complete BPA removal from lake water was observed under visible light irradiation. Furthermore, >90% of photocatalytic activity toward BPA degradation was achieved in 5 cycles of continuous addition of BPA to the lake water. The BPA degradation intermediates were identified by HPLC/MS/MS and possible reaction pathways were proposed. Results clearly demonstrate the excellent visible-light-sensitive photocatalytic degradation of BPA over ZnFe2O4-TiO2 composite which has a great application potential for the decomposition of emerging contaminants in impaired waters.
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Affiliation(s)
- Thanh Binh Nguyen
- 101, Sec. 2, Kuang Fu Road, Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - C P Huang
- Department of Civil and Environmental Engineering, University of Delaware, Newark 19716, DE, USA.
| | - Ruey-An Doong
- 101, Sec. 2, Kuang Fu Road, Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan; 1001, University Road, Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
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30
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Stolzenburg P, Lorenz T, Dietzel A, Garnweitner G. Microfluidic synthesis of metal oxide nanoparticles via the nonaqueous method. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.07.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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31
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Two-step hydrothermal synthesis of peanut-shaped molybdenum diselenide/bismuth vanadate (MoSe2/BiVO4) with enhanced visible-light photocatalytic activity for the degradation of glyphosate. J Colloid Interface Sci 2018; 532:456-463. [DOI: 10.1016/j.jcis.2018.07.142] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 07/23/2018] [Accepted: 07/31/2018] [Indexed: 11/19/2022]
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32
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Asadzadeh-Khaneghah S, Habibi-Yangjeh A, Seifzadeh D. Graphitic carbon nitride nanosheets coupled with carbon dots and BiOI nanoparticles: Boosting visible-light-driven photocatalytic activity. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.03.017] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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