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Li Y, Chen S, Duan W, Nan Y, Ding D, Xiao G. Research progress of vanadium pentoxide photocatalytic materials. RSC Adv 2023; 13:22945-22957. [PMID: 37529363 PMCID: PMC10387825 DOI: 10.1039/d3ra03648k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 07/15/2023] [Indexed: 08/03/2023] Open
Abstract
Photocatalytic reactions convert solar energy into chemical energy through a clean and green reaction process. Photocatalytic technology based on semiconductor materials provides us with a new idea in energy utilization and environmental governance. It was found that vanadium pentoxide (V2O5) has a narrow band gap, wide response range in the visible region, high oxygen density in the V2O5 lattice, high oxidation state of V5+, small energy requirement, and superior catalytic activity in partial oxidation. Therefore, the utilization rate of sunlight and photocatalytic oxidation can be greatly improved using V2O5 materials. However, the narrow band gap of V2O5 also makes it easier for the photogenerated electrons and holes to recombine in the excited state, and the stored energy is instantly consumed by carrier recombination. Therefore, how to promote the carrier separation of V2O5 and improve the photocatalytic efficiency are the key problems to be solved. Herein, several methods to improve the photocatalytic performance of V2O5 are reviewed, including metallic ion doping, non-metallic ion doping, semiconductor recombination, and noble metal deposition. Finally, it is suggested that future research directions should focus on a variety of modification methods simultaneously to promote photocatalytic efficiency and lower the cost, which will enable V2O5 to have a broad development prospect in the field of photocatalysis.
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Affiliation(s)
- Yanlin Li
- School of Materials Science and Engineering, Xi'an University of Architecture & Technology Xi'an 710055 China
| | - Shenghua Chen
- School of Materials Science and Engineering, Xi'an University of Architecture & Technology Xi'an 710055 China
| | - Wenyuan Duan
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, Xijing University Xi'an 710123 China
| | - Yanli Nan
- School of Materials Science and Engineering, Xi'an University of Architecture & Technology Xi'an 710055 China
| | - Donghai Ding
- School of Materials Science and Engineering, Xi'an University of Architecture & Technology Xi'an 710055 China
| | - Guoqing Xiao
- School of Materials Science and Engineering, Xi'an University of Architecture & Technology Xi'an 710055 China
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Hu P, Hu P, Vu TD, Li M, Wang S, Ke Y, Zeng X, Mai L, Long Y. Vanadium Oxide: Phase Diagrams, Structures, Synthesis, and Applications. Chem Rev 2023; 123:4353-4415. [PMID: 36972332 PMCID: PMC10141335 DOI: 10.1021/acs.chemrev.2c00546] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Vanadium oxides with multioxidation states and various crystalline structures offer unique electrical, optical, optoelectronic and magnetic properties, which could be manipulated for various applications. For the past 30 years, significant efforts have been made to study the fundamental science and explore the potential for vanadium oxide materials in ion batteries, water splitting, smart windows, supercapacitors, sensors, and so on. This review focuses on the most recent progress in synthesis methods and applications of some thermodynamically stable and metastable vanadium oxides, including but not limited to V2O3, V3O5, VO2, V3O7, V2O5, V2O2, V6O13, and V4O9. We begin with a tutorial on the phase diagram of the V-O system. The second part is a detailed review covering the crystal structure, the synthesis protocols, and the applications of each vanadium oxide, especially in batteries, catalysts, smart windows, and supercapacitors. We conclude with a brief perspective on how material and device improvements can address current deficiencies. This comprehensive review could accelerate the development of novel vanadium oxide structures in related applications.
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Wei N, Zhao C, Hu X, Tong Z, Yun J, Jiang X, Liu C, Wang K, Zou Y, Chen Z. Elucidating the facet-dependent reactivity of CrMn catalyst for selective catalytic reduction of NO x with NH 3. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 855:158881. [PMID: 36411606 DOI: 10.1016/j.scitotenv.2022.158881] [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: 07/14/2022] [Revised: 09/15/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
The facet-dependent reactivity of CrMn catalysts was still unclear, hindering the further enhancement of their low-temperature SCR performance. Herein, the facet-dependent reactivity of CrMn1.5O4 catalyst for NH3-SCR of NOx was innovatively illustrated by numerous characterizations and density functional theory (DFT) calculations. Exposed (100) facet of CrMn1.5O4 catalyst exhibited best low-temperature SCR activity with ≥90 % NO conversion within 148-296 °C and 2.86 × 10-3 mol/(g·s) reaction rate within 160-240 °C. The characterizations revealed that (100) facet could induce the increase of BET specific area, electron transfer, concentration of Mn4+ and Oα, surface acidity, redox ability, NH3 and NOx adsorption/activation capacity. Subsequently, DFT calculations demonstrated that (100) facet exhibited the strongest affinity for NH3 and NO due to its unique 3O3c-Mn5c-2O4c bond and abundant charges transfer near the active adsorption sites, and Brønsted acid and oxygen vacancies were most easily formed on (100) facet. Furthermore, H2O formation as the rate determining step easily occurred on (100) facet. Eventually, we successfully improved the low-temperature SCR activity of CrMn1.5O4 catalyst by further tailoring highly active (100) facet from 0.754 to 0.865. This work provides the deeper understanding of facet-dependent reactivity and a good strategy to improve the catalytic activity of the catalysts.
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Affiliation(s)
- Ninghan Wei
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China
| | - Cheng Zhao
- Guangdong Key Lab of Water & Air Pollution Control, Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China
| | - Xiaomei Hu
- Guangdong Key Lab of Water & Air Pollution Control, Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China
| | - Zhangfa Tong
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China
| | - Junge Yun
- College of Environment and Resources, Xiangtan University, Xiangtan, 411105, PR China
| | - Xueying Jiang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China
| | - Chengxian Liu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China
| | - Keju Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China
| | - Yun Zou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, PR China.
| | - Zhihang Chen
- Guangdong Key Lab of Water & Air Pollution Control, Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou 510655, PR China; College of Environment and Resources, Xiangtan University, Xiangtan, 411105, PR China.
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Ratio of adsorptive abilities for NH3 and NOx determined SCR activity of transition-metal catalyst. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128080] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Gong Z, Wang B, Chen W, Ma S, Jiang W, Jiang X. Waste straw derived Mn-doped carbon/mesoporous silica catalyst for enhanced low-temperature SCR of NO. WASTE MANAGEMENT (NEW YORK, N.Y.) 2021; 136:28-35. [PMID: 34634568 DOI: 10.1016/j.wasman.2021.09.035] [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: 04/15/2021] [Revised: 09/04/2021] [Accepted: 09/24/2021] [Indexed: 06/13/2023]
Abstract
This work proposed a new strategy for the high value utilization of waste straw, in which a Mn-doped carbon/mesoporous silica composite catalyst was prepared by simultaneous utilization of carbon and silicon source from straw for low-temperature denitration. The results showed that the NO conversion rate reached 93% at 180℃ for the composite catalyst with Si/C mass ratio of 35% (Mn/ACMS (35%)). This was significantly higher than those of the activated carbon catalyst (Mn/AC) and mesoporous silica catalyst (Mn/MS), i.e., 58% and 50%, respectively. The SEM images showed that mesoporous silica nanoparticles were dispersed evenly on the carbon surface to form composite materials. XPS results indicated that Mn/ACMS (35%) catalyst showed higher content of chemically adsorbed oxygen (Oα) and Mn4+ (54.67% and 46.81%) than Mn/AC catalyst (34.38% and 17.49%) and Mn/MS catalyst (32.71% and 30.18%), which was responsible for the improved catalytic activity. Moreover, NH3-TPD results revealed that Mn/ACMS (35%) had high surface acidity of 6.47 mmol·g-1, significantly higher than Mn/AC catalyst of 1.51 mmol·g-1, which was beneficial for adsorbing NH3. H2-TPR results suggested that Mn/ACMS (35%) catalyst had much higher H2 consumption of 1.32 mmol·g-1 than Mn/AC and Mn/MS catalyst, suggesting better redox performance. The results demonstrated that the straw derived Mn-doped carbon/mesoporous silica composite catalyst can be a potential material for low-temperature denitration.
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Affiliation(s)
- Zheng Gong
- College of Architecture and Environment, Sichuan University, Chengdu 610065, People's Republic of China
| | - Bangda Wang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, People's Republic of China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, People's Republic of China.
| | - Wenhua Chen
- College of Architecture and Environment, Sichuan University, Chengdu 610065, People's Republic of China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, People's Republic of China
| | - Shenggui Ma
- College of Architecture and Environment, Sichuan University, Chengdu 610065, People's Republic of China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, People's Republic of China
| | - Wenju Jiang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, People's Republic of China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, People's Republic of China
| | - Xia Jiang
- College of Architecture and Environment, Sichuan University, Chengdu 610065, People's Republic of China; National Engineering Research Center for Flue Gas Desulfurization, Chengdu 610065, People's Republic of China.
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Thermal stability of CeVO4-based catalysts depending on support composition for the selective catalytic reduction of NOx by ammonia. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04614-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Yao D, Liu B, Wu F, Li Y, Hu X, Jin W, Wang X. N 2O Formation Mechanism During Low-Temperature NH 3-SCR over Cu-SSZ-13 Catalysts with Different Cu Loadings. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01514] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Dongwei Yao
- College of Energy Engineering, Zhejiang University, 38 Zheda Road,
West Lake District, Hangzhou, Zhejiang 310027, China
| | - Biao Liu
- College of Energy Engineering, Zhejiang University, 38 Zheda Road,
West Lake District, Hangzhou, Zhejiang 310027, China
| | - Feng Wu
- College of Energy Engineering, Zhejiang University, 38 Zheda Road,
West Lake District, Hangzhou, Zhejiang 310027, China
| | - Yuxi Li
- College of Energy Engineering, Zhejiang University, 38 Zheda Road,
West Lake District, Hangzhou, Zhejiang 310027, China
| | - Xiaohan Hu
- College of Energy Engineering, Zhejiang University, 38 Zheda Road,
West Lake District, Hangzhou, Zhejiang 310027, China
| | - Weiyang Jin
- Wuxi Weifu Environmental Catalysts Co., Ltd, Wuxi 214018, China
| | - Xinlei Wang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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