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Zhang H, Bao L, Pan Y, Du J, Wang W. Interface reconstruction of MXene-Ti 3C 2 doped CeO 2 nanorods for remarked photocatalytic ammonia synthesis. J Colloid Interface Sci 2024; 675:130-138. [PMID: 38968633 DOI: 10.1016/j.jcis.2024.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2024] [Revised: 06/29/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
Prospective photocatalytic ammonia synthesis process has received more attentions but quite challenging with the low visible light utilization and weak N2 molecule absorption ability around the photocatalysts. Herein, interface reconstruction of MXene-Ti3C2/CeO2 composites with high-concentration active sites through the carbon-doped process are presented firstly, and obvious transition zones with the three-phase reaction interface are formed in the as-prepared catalysts. The optimal co-doped sample demonstrates an excellent photo response in the visible light region, the strongest chemisorption activity and the most active sites. Moreover, much more in-situ extra oxygen defects are also produced under light irradiation. It is expected that the double decorated catalyst shows a remarked ammonia production rate of above 0.76 mmol gcal-1·h-1 under visible-light illumination and a higher apparent quantum efficiency of 1.08 % at 420 nm, which is one of the most completive properties for the photocatalytic N2 fixation at present.
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Affiliation(s)
- Huaiwei Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China.
| | - Liang Bao
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Ying Pan
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Jia Du
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, PR China
| | - Wei Wang
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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2
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Zhang H, Bao L, Zhou Q, Pan Y, Ge J, Du J. Modulating band structure through introducing Cu 0/Cu xO composites for the improved visible light driven ammonia synthesis. J Colloid Interface Sci 2024; 661:271-278. [PMID: 38301465 DOI: 10.1016/j.jcis.2024.01.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 01/22/2024] [Accepted: 01/28/2024] [Indexed: 02/03/2024]
Abstract
The photocatalytic performance of ceria-based materials can be tuned by adjusting the surface structures with decorating the transition-metal, which are considered as the important active sites. Herein, cuprous oxide-metallic copper composite-doped ceria nanorods were assembled through a simple hydrothermal reduction method. The photocatalytic ammonia synthesis rates exhibit an inverted "V-shaped" trend with increasing Cu0/CuxO mole ratio. The best ammonia production rate, approximately 900 or 521 µmol·gcal-1·h-1 under full-spectra or visible light, can be achieved when the Cu0/CuxO ratio is approximately 0.16, and this value is 8 times greater than that of the original sample. The absorption edge of the as-prepared samples shifted towards visible wavelengths, and they also had appropriate ammonia synthesis levels. This research provides a strategy for designing noble metal-free photocatalysts through introducing the metal/metallic oxide compositesto the catalysts.
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Affiliation(s)
- Huaiwei Zhang
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
| | - Liang Bao
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Qingwei Zhou
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Ying Pan
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jingyuan Ge
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China.
| | - Jia Du
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
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3
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Sendeku MG, Shifa TA, Dajan FT, Ibrahim KB, Wu B, Yang Y, Moretti E, Vomiero A, Wang F. Frontiers in Photoelectrochemical Catalysis: A Focus on Valuable Product Synthesis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2308101. [PMID: 38341618 DOI: 10.1002/adma.202308101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 01/19/2024] [Indexed: 02/12/2024]
Abstract
Photoelectrochemical (PEC) catalysis provides the most promising avenue for producing value-added chemicals and consumables from renewable precursors. Over the last decades, PEC catalysis, including reduction of renewable feedstock, oxidation of organics, and activation and functionalization of C─C and C─H bonds, are extensively investigated, opening new opportunities for employing the technology in upgrading readily available resources. However, several challenges still remain unsolved, hindering the commercialization of the process. This review offers an overview of PEC catalysis targeted at the synthesis of high-value chemicals from sustainable precursors. First, the fundamentals of evaluating PEC reactions in the context of value-added product synthesis at both anode and cathode are recalled. Then, the common photoelectrode fabrication methods that have been employed to produce thin-film photoelectrodes are highlighted. Next, the advancements are systematically reviewed and discussed in the PEC conversion of various feedstocks to produce highly valued chemicals. Finally, the challenges and prospects in the field are presented. This review aims at facilitating further development of PEC technology for upgrading several renewable precursors to value-added products and other pharmaceuticals.
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Affiliation(s)
- Marshet Getaye Sendeku
- Ocean Hydrogen Energy R&D Center, Research Institute of Tsinghua University in Shenzhen, Shenzhen, 518057, P. R. China
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Tofik Ahmed Shifa
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, 30172, Italy
| | - Fekadu Tsegaye Dajan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Kassa Belay Ibrahim
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, 30172, Italy
| | - Binglan Wu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Ying Yang
- Shaanxi Provincial Key Laboratory of Electroanalytical Chemistry, Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P. R. China
| | - Elisa Moretti
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, 30172, Italy
| | - Alberto Vomiero
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, Venezia Mestre, 30172, Italy
- Department of Engineering Sciences and Mathematics, Division of Materials Science, Luleå University of Technology, Luleå, 97187, Sweden
| | - Fengmei Wang
- State Key Laboratory of Chemical Resource Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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4
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Liang H, Zhao Y, Liu T, Li R, Li R, Zhu Y, Fang F. Zn-Doped MnCO 3/CS Composite Photocatalyst for Visible-Light-Driven Decomposition of Organic Pollutants. Molecules 2024; 29:1094. [PMID: 38474608 DOI: 10.3390/molecules29051094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 02/22/2024] [Accepted: 02/26/2024] [Indexed: 03/14/2024] Open
Abstract
Zn-doped MnCO3/carbon sphere (Zn-doped MnCO3/CS) composites were synthesized using a simple hydrothermal procedure. Among various samples (ZM-50, ZM-05, and ZMC-0), the ternary Zn-doped MnCO3/CS (ZMC-2) catalyst demonstrated excellent visible light-induced photocatalytic activity. This improvement comes from the Zn addition and the conductive CS, which facilitate electron movement and charge transport. The catalyst exhibited efficient degradation of methylene blue (MB) over a wide pH range, achieving a removal efficiency of 99.6% under visible light. Radical trapping experiments suggested that •OH and •O2- played essential roles in the mechanism of organic pollutant degradation. Moreover, the catalyst maintained good degradation performance after five cycles. This study offers valuable perspectives into the fabrication of carbon-based composites with promising photocatalytic activity.
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Affiliation(s)
- Hui Liang
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yongxin Zhao
- College of Chemistry and Material Science, Shandong Agricultural University, Taian 271018, China
| | - Tongjin Liu
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Ruijuan Li
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Rumei Li
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Yuxiao Zhu
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
| | - Feng Fang
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China
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5
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Bai H, Wang F, Ding Q, Xie W, Li H, Zheng G, Fan W. Construction of Frustrated Lewis Pair Sites in CeO 2-C/BiVO 4 for Photoelectrochemical Nitrate Reduction. Inorg Chem 2023; 62:2394-2403. [PMID: 36690351 DOI: 10.1021/acs.inorgchem.2c04208] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Photoelectrochemical nitrate reduction reaction (PEC NIRR) could convert the harmful pollutant nitrate (NO3-) to high-value-added ammonia (NH3) under mild conditions. However, the catalysts are currently hindered by the low catalytic activity and slow kinetics. Here, we reported a heterostructure composed of CeO2 and BiVO4, and the "frustrated Lewis pairs (FLPs)" concept was introduced for understanding the role of Lewis acids and Lewis bases on PEC NIRR. The electron density difference maps indicated that FLPs were significantly active for the adsorption and activation of NO3-. Furthermore, carbon (C) improved the carrier transport ability and kinetics, contributing to the NH3 yield of 21.81 μg h-1 cm-2. The conversion process of NO3- to NH3 was tracked by 15NO3- and 14NO3- isotopic labeling. Therefore, this study demonstrated the potential of CeO2-C/BiVO4 for efficient PEC NIRR and provided a unique mechanism for the adsorption and activation of NO3- over FLPs.
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Affiliation(s)
- Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Fengfeng Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Qijia Ding
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Wanru Xie
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Hongping Li
- School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, PR China
| | - Guoli Zheng
- Department Key Laboratory of Catalysis, South-Central University for Nationalities, Wuhan 430074, China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.,Jiangsu Province and Education Ministry Co-Sponsored Synergistic Innovation Center of Modern Agricultural Equipment, Zhenjiang 212013, Jiangsu, PR China
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6
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Zhang S, Lu Y, Ding Q, Yu Y, Huo P, Shi W, Xu D. MOF derived NiO thin film formed p-n heterojunction with BiVO4 photoelectrode for enhancement of PEC performance. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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7
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Bai H, Wang F, Liu Y, Ma C, Ding J, Fan W. Decoration of Ni on Cu2O with kinetic improvement for photoelectrochemical nitrogen reduction. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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8
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Lv C, Liu J, Lee C, Zhu Q, Xu J, Pan H, Xue C, Yan Q. Emerging p-Block-Element-Based Electrocatalysts for Sustainable Nitrogen Conversion. ACS NANO 2022; 16:15512-15527. [PMID: 36240028 DOI: 10.1021/acsnano.2c07260] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Artificial nitrogen conversion reactions, such as the production of ammonia via dinitrogen or nitrate reduction and the synthesis of organonitrogen compounds via C-N coupling, play a pivotal role in the modern life. As alternatives to the traditional industrial processes that are energy- and carbon-emission-intensive, electrocatalytic nitrogen conversion reactions under mild conditions have attracted significant research interests. However, the electrosynthesis process still suffers from low product yield and Faradaic efficiency, which highlight the importance of developing efficient catalysts. In contrast to the transition-metal-based catalysts that have been widely studied, the p-block-element-based catalysts have recently shown promising performance because of their intriguing physiochemical properties and intrinsically poor hydrogen adsorption ability. In this Perspective, we summarize the latest breakthroughs in the development of p-block-element-based electrocatalysts toward nitrogen conversion applications, including ammonia electrosynthesis from N2 reduction and nitrate reduction and urea electrosynthesis using nitrogen-containing feedstocks and carbon dioxide. The catalyst design strategies and the underlying reaction mechanisms are discussed. Finally, major challenges and opportunities in future research directions are also proposed.
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Affiliation(s)
- Chade Lv
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jiawei Liu
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| | - Carmen Lee
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| | - Qiang Zhu
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, #08-03, 138634 Singapore
| | - Jianwei Xu
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, #08-03, 138634 Singapore
- Institute of Sustainability for Chemicals, Energy and Environment, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, 627833 Singapore
| | - Hongge Pan
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an 710021, China
| | - Can Xue
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
| | - Qingyu Yan
- School of Materials Science and Engineering, Nanyang Technological University, 639798 Singapore
- Institute of Materials Research and Engineering, A*STAR, 2 Fusionopolis Way, Innovis, #08-03, 138634 Singapore
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9
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Sriram B, Baby JN, Hsu YF, Wang SF, George M. In Situ Synthesis of a Bismuth Vanadate/Molybdenum Disulfide Composite: An Electrochemical Tool for 3-Nitro-l-Tyrosine Analysis. Inorg Chem 2022; 61:14046-14057. [PMID: 35998644 DOI: 10.1021/acs.inorgchem.2c02037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The quantification of 3-nitro-l-tyrosine (NO2-Tyr), an in vivo biomarker of nitrosative stress, is indispensable for the clinical intervention of various inflammatory disorders caused by nitrosative stress. By integrating the unique features of BiVO4 and MoS2 with matching bandgap energies, electrode materials with amplified response signals can be developed. In this regard, we introduce a hydrothermally synthesized bismuth vanadate sheathed molybdenum disulfide (MoS2@BiVO4) heterojunction as a highly sensitive electrode material for the determination of NO2-Tyr. Excellent electrochemical behavior perceived for the MoS2@BiVO4 augments the performance of the sensor and allows the measurement of NO2-Tyr in biological media without any time-consuming pretreatments. The synergistic interactions between BiVO4 and MoS2 heterojunctions contribute to low resistance charge transfer (Rct = 159.13 Ω·cm2), a reduction potential Epc = -0.58 V (vs Ag/AgCl), and a good response range (0.001-526.3 μM) with a lower limit of detection (0.94 nM) toward the detection of NO2-Tyr. An improved active surface area, reduced charge recombination, and high analyte adsorption contribute to the high loading of the biomarker for improved selectivity (in the presence of 10 interfering compounds), operational stability (1000 s), and reproducibility (six various modified electrodes). The proposed sensor was successfully utilized for the real-time determination of NO2-Tyr in water, urine, and saliva samples with good recovery values (±98.94-99.98%), ascertaining the reliability of the method. It is noteworthy that the electrochemical activity remains unaffected by other redox interferons, thus leading to targeted sensing applications.
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Affiliation(s)
- Balasubramanian Sriram
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Jeena N Baby
- Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai, Tamil Nadu 600086, India.,Department of Chemistry, St. Mary's College, Sulthan Bathery, Wayanad, Kerala 673592, India
| | - Yung-Fu Hsu
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Sea-Fue Wang
- Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Mary George
- Department of Chemistry, Stella Maris College, Affiliated to the University of Madras, Chennai, Tamil Nadu 600086, India
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10
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Hui X, Wang L, Yao Z, Hao L, Sun Z. Recent progress of photocatalysts based on tungsten and related metals for nitrogen reduction to ammonia. Front Chem 2022; 10:978078. [PMID: 36072702 PMCID: PMC9441816 DOI: 10.3389/fchem.2022.978078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 07/15/2022] [Indexed: 11/22/2022] Open
Abstract
Photocatalytic nitrogen reduction reaction (NRR) to ammonia holds a great promise for substituting the traditional energy-intensive Haber–Bosch process, which entails sunlight as an inexhaustible resource and water as a hydrogen source under mild conditions. Remarkable progress has been achieved regarding the activation and solar conversion of N2 to NH3 with the rapid development of emerging photocatalysts, but it still suffers from low efficiency. A comprehensive review on photocatalysts covering tungsten and related metals as well as their broad ranges of alloys and compounds is lacking. This article aims to summarize recent advances in this regard, focusing on the strategies to enhance the photocatalytic performance of tungsten and related metal semiconductors for the NRR. The fundamentals of solar-to-NH3 photocatalysis, reaction pathways, and NH3 quantification methods are presented, and the concomitant challenges are also revealed. Finally, we cast insights into the future development of sustainable NH3 production, and highlight some potential directions for further research in this vibrant field.
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Affiliation(s)
| | | | | | | | - Zhenyu Sun
- *Correspondence: Leiduan Hao, ; Zhenyu Sun,
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11
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Photoelectrochemical nitrogen reduction: A step toward achieving sustainable ammonia synthesis. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)64001-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Double quantum dots decorated layer structure CeCO3OH for improved N2 photo-fixation. J Catal 2022. [DOI: 10.1016/j.jcat.2022.06.004] [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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13
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Tu W, Liu Y, Chen M, Zhou Y, Xie Z, Ma L, Li L, Yang B. Carbon nitride coupled with Ti3C2-Mxene derived amorphous Ti-peroxo heterojunction for photocatalytic degradation of rhodamine B and tetracycline. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128448] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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14
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ZnS/g-C3N4 heterojunction with Zn-vacancy for efficient hydrogen evolution in water splitting driven by visible light. CATAL COMMUN 2022. [DOI: 10.1016/j.catcom.2022.106422] [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] Open
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15
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Wang F, Ding Q, Bai Y, Bai H, Wang S, Fan W. Fabrication of an amorphous metal oxide/p-BiVO4 photocathode: understanding the role of entropy for reducing nitrate to ammonia. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01472b] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Entropy regulation makes an amorphous metal oxide/p-BiVO4 heterostructure a desirable catalyst for the NO3− reduction reaction in a photoelectrochemical system.
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Affiliation(s)
- Fengfeng Wang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Qijia Ding
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Yajie Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Hongye Bai
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
| | - Song Wang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, 441053, PR China
| | - Weiqiang Fan
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, P. R. China
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16
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Hou C, Yu J, Ding J, Fan W, Bai H, Xu D, Shi W. An effective route for growth of WO3/BiVO4 heterojunction thin films with enhanced photoelectrochemical performance. J IND ENG CHEM 2021. [DOI: 10.1016/j.jiec.2021.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Ding Q, Xu D, Ding J, Fan W, Zhang X, Li Y, Shi W. ZIF-8 derived ZnO/TiO 2 heterostructure with rich oxygen vacancies for promoting photoelectrochemical water splitting. J Colloid Interface Sci 2021; 603:120-130. [PMID: 34186389 DOI: 10.1016/j.jcis.2021.06.087] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 10/25/2022]
Abstract
Due to the serious recombination of electron-hole and weak photoresponse ability, achieving highly efficient photoelectrochemical (PEC) water splitting activity for TiO2 photoelectrode has become a key issue. In this paper, we reported a new method for preparing ZnO/TiO2 photoelectrodes by electrostatic adsorption from zeolitic imidazolate framework-8 (ZIF-8) as the precursor. ZIF-8 was combined with TiO2 nanorods (NRs) through electrostatic interaction and then calcined to obtain ZnO/TiO2 heterojunction photoelectrodes with abundant oxygen vacancies (Ovac). The introduced ZnO with Ovac provides a large number of active sites which enhanced the electrical conductivity and charges separation of ZnO/TiO2 photoelectrode. The optimal photocurrent density of ZnO/TiO2 photoelectrodes at 1.23 V versus (vs.) reversible hydrogen electrode (RHE) under illumination (100 mW/cm2) has reached 1.76 mA/cm2, almost 2.75 times that of the pure TiO2. Meanwhile, the incident photon-to-electron conversion efficiency (IPCE) of the best photoelectrode has increased to 58.2% at 390 nm, the charge injection (ηinjection) and separation (ηseparation) efficiency have reached to 93.53% and 51.62% (1.23 V vs. RHE), respectively.
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Affiliation(s)
- Qijia Ding
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Dongbo Xu
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
| | - Jinrui Ding
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Weiqiang Fan
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaowu Zhang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yihuan Li
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Weidong Shi
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
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18
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Defect engineering for high-selection-performance of NO reduction to NH3 over CeO2 (111) surface: A DFT study. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.05.072] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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19
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Wang L, Li M, Wang S, Zhang T, Li F, Xu L. Enhanced photocatalytic nitrogen fixation in BiVO 4: constructing oxygen vacancies and promoting electron transfer through Ohmic contact. NEW J CHEM 2021. [DOI: 10.1039/d1nj04580f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The Ag nanoparticles deposited on the surface of BiVO4 containing oxygen vacancies are employed in photocatalytic N2 fixation. The NH3 generation rate is enhanced by constructing abundant oxygen vacancies and promoting electron transfer by Ohmic contact.
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Affiliation(s)
- Libo Wang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Mohan Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Shiyu Wang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Tingting Zhang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Fengyan Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
| | - Lin Xu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education College of Chemistry, Northeast Normal University, Changchun 130024, P. R. China
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