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Huang X, Du R, Zhang Y, Ren J, Yang Q, Wang K, Ni Y, Yao Y, Ali Soomro R, Guo L, Yang C, Wang D, Xu B, Fu F. Modulating charge oriented accumulation via interfacial chemical-bond on In 2O 3/Bi 2MoO 6 heterostructures for photocatalytic nitrogen fixation. J Colloid Interface Sci 2024; 664:33-44. [PMID: 38458053 DOI: 10.1016/j.jcis.2024.03.018] [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: 02/16/2024] [Revised: 02/29/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
Photocatalytic nitrogen fixation presents an eco-friendly approach to converting atmospheric nitrogen into ammonia (NH3), but the process faces challenges due to rapid interface charge recombination. Here, we report an innovative charge transfer and oriented accumulation strategy using an In-O-Mo bond-modulated S-scheme heterostructure composed of In2O3/Bi2MoO6 (In/BMO) synthesized using a simple electrostatic assembly. The unique interfacial arrangement with optimal photocatalyst configuration (3 % In/BMO) enabled enhanced photogenerated electron separation and transfer, leading to a remarkable nitrogen fixation rate of approximately 150.9 μmol·gcat-1·h-1 under visible light irradiation. The performance of the photocatalyst was 9-fold and 27-fold higher than that of its pristine components, Bi2MoO6 and In2O3, respectively. The experimental and theoretical evaluation deemed interfacial In-O-Mo bonds crucial for rapid transfer and charge-oriented accumulation. Whereas the generated internal electric field drove the spatial separation and transfer of photo-generated electrons and holes, significantly enhancing the photocatalytic N2-to-NH3 conversion efficiency. The proposed work lays the foundation for designing S-scheme heterostructures with highly efficient interfacial bonds, offering a promising avenue for substantial improvements in photocatalytic nitrogen fixation.
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Affiliation(s)
- Xin Huang
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Rui Du
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Yuanyuan Zhang
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Jingyu Ren
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Qisheng Yang
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Kangning Wang
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Yang Ni
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Yuqi Yao
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Razium Ali Soomro
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Li Guo
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China.
| | - Chunming Yang
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China.
| | - Danjun Wang
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China.
| | - Bin Xu
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
| | - Feng Fu
- Yan'an Key Laboratory of Green Catalysis and Quality Improvement and Utilization of Low Rank Coal, College of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, PR China
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2
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Jiang Y, Liu S, Huan Y, He Y, Cheng Q, Yuan X, Liu J, Wang M, Yan C, Qian T. Rare-Earth Lanthanum-Evoked Amorphization and Optimization to Boost Ambient Nitrogen Fixation over Single-Atom Catalysts. J Phys Chem Lett 2024; 15:5495-5500. [PMID: 38748898 DOI: 10.1021/acs.jpclett.4c00921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Single-atom catalysts (SACs) have been widely studied in a variety of electrocatalysis. However, its application in the electrocatalytic nitrogen reduction reaction (NRR) field still suffers from unsatisfactory performance, due to the sluggish mass transfer and significant kinetic barriers. Herein, a novel rare-earth-lanthanum-evoked optimization strategy is proposed to boost ambient NRR over SACs. The incorporation of La with a large atomic radius tends to break the atomic long-range order and trigger the amorphization of SACs, endowing a greater density of dangling bonds that could modify affinity for reactants and adsorbates. Moreover, with unique 5d16s2 valence-electron configurations, its presence could further enrich the electron density and enhance the intrinsic activity of single-metal center via the valence orbital coupling. As expected, the La-modified catalyst presents excellent activity toward the electrochemical NRR, delivering a maximum ammonia yield rate of 33.91 μg h-1 mg-1 and a remarkable Faradaic efficiency of 53.82%.
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Affiliation(s)
- Yuzhuo Jiang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Sisi Liu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Yunfei Huan
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Yanzheng He
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
- College of Energy, Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Qiyang Cheng
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
- College of Energy, Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Xiaolei Yuan
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Jie Liu
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
| | - Mengfan Wang
- College of Energy, Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
| | - Chenglin Yan
- College of Energy, Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, Soochow University, Suzhou 215006, China
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China
| | - Tao Qian
- School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China
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3
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Zhou Y, Zhang L, Zhu Z, Wang M, Li N, Qian T, Yan C, Lu J. Optimizing Intermediate Adsorption over PdM (M=Fe, Co, Ni, Cu) Bimetallene for Boosted Nitrate Electroreduction to Ammonia. Angew Chem Int Ed Engl 2024; 63:e202319029. [PMID: 38449084 DOI: 10.1002/anie.202319029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/08/2024]
Abstract
Electrochemical reduction of nitrate to ammonia (NO3RR) is a promising and eco-friendly strategy for ammonia production. However, the sluggish kinetics of the eight-electron transfer process and poor mechanistic understanding strongly impedes its application. To unveil the internal laws, herein, a library of Pd-based bimetallene with various transition metal dopants (PdM (M=Fe, Co, Ni, Cu)) are screened to learn their structure-activity relationship towards NO3RR. The ultra-thin structure of metallene greatly facilitates the exposure of active sites, and the transition metals dopants break the electronic balance and upshift its d-band center, thus optimizing intermediates adsorption. The anisotropic electronic characteristics of these transition metals make the NO3RR activity in the order of PdCu>PdCo≈PdFe>PdNi>Pd, and a record-high NH3 yield rate of 295 mg h-1 mgcat -1 along with Faradaic efficiency of 90.9 % is achieved in neutral electrolyte on PdCu bimetallene. Detailed studies further reveal that the moderate N-species (*NO3 and *NO2) adsorption ability, enhanced *NO activation, and reduced HER activity facilitate the NH3 production. We believe our results will give a systematic guidance to the future design of NO3RR catalysts.
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Affiliation(s)
- Yuanbo Zhou
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Lifang Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, P. R. China
| | - Zebin Zhu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Mengfan Wang
- Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, College of Energy, Soochow University, Suzhou, 215006, P. R. China
| | - Najun Li
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
| | - Tao Qian
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, P. R. China
| | - Chenglin Yan
- Key Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical Industry, College of Energy, Soochow University, Suzhou, 215006, P. R. China
- School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, P. R. China
| | - Jianmei Lu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Chemistry Chemical Engineering and Materials Science, Soochow University, 199 Ren'ai Road, Suzhou, 215123, P. R. China
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4
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Zhang S, Lu L, Jiang J, Liu N, Zhao B, Xu M, Cheng P, Shi W. Organizing Photosensitive and Photothermal Single-Sites Uniformly in a Trimetallic Metal-Organic Framework for Efficient Photocatalytic Hydrogen Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2403464. [PMID: 38574231 DOI: 10.1002/adma.202403464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 03/28/2024] [Indexed: 04/06/2024]
Abstract
Effective combination of the photosensitivity and photothermal property in photocatalyst is vital to achieve the maximum light utilization for superior photocatalytic efficiency. Herein, this work successfully organizes photosensitive Cd-NS single-sites and photothermal Ni-NS single-sites uniformly at a molecular level within a tailored trimetallic metal-organic framework. The optimized Ho6-Cd0.76Ni0.24-NS exhibits a superior photocatalytic hydrogen evolution rate of 40.06 mmol g-1 h-1 under visible-light irradiation and an apparent quantum efficiency of 29.37% at 420 nm without using cocatalysts or photosensitizers. A systematical mechanism study reveals that the uniformly organized photosensitive and photothermal single-sites have synergistic effect, which form ultrashort pathways for efficient transport of photoinduced electrons, suppress the recombination of photogenerated charge carriers, hence promote the hydrogen evolution activity. This work provides a promising approach for organizing dual-functional single-sites uniformly in photocatalyst for high-performance photocatalytic activity.
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Affiliation(s)
- Shiqi Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Lele Lu
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Jialong Jiang
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Ning Liu
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Bin Zhao
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Mingming Xu
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Peng Cheng
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
| | - Wei Shi
- Key Laboratory of Advanced Energy Materials Chemistry (MOE) and State Key Laboratory of Advanced Chemical Power Sources, Nankai University, Tianjin, 300071, China
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Yuan J, Feng W, Zhang Y, Xiao J, Zhang X, Wu Y, Ni W, Huang H, Dai W. Unraveling Synergistic Effect of Defects and Piezoelectric Field in Breakthrough Piezo-Photocatalytic N 2 Reduction. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2303845. [PMID: 37638643 DOI: 10.1002/adma.202303845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 08/27/2023] [Indexed: 08/29/2023]
Abstract
Piezo-photocatalysis is a frontier technology for converting mechanical and solar energies into crucial chemical substances and has emerged as a promising and sustainable strategy for N2 fixation. Here, for the first time, defects and piezoelectric field are synergized to achieve unprecedented piezo-photocatalytic nitrogen reduction reaction (NRR) activity and their collaborative catalytic mechanism is unraveled over BaTiO3 with tunable oxygen vacancies (OVs). The introduced OVs change the local dipole state to strengthen the piezoelectric polarization of BaTiO3 , resulting in a more efficient separation of photogenerated carrier. Ti3+ sites adjacent to OVs promote N2 chemisorption and activation through d-π back-donation with the help of the unpaired d-orbital electron. Furthermore, a piezoelectric polarization field could modulate the electronic structure of Ti3+ to facilitate the activation and dissociation of N2 , thereby substantially reducing the reaction barrier of the rate-limiting step. Benefitting from the synergistic reinforcement mechanism and optimized surface dynamics processes, an exceptional piezo-photocatalytic NH3 evolution rate of 106.7 µmol g-1 h-1 is delivered by BaTiO3 with moderate OVs, far surpassing that of previously reported piezocatalysts/piezo-photocatalysts. New perspectives are provided here for the rational design of an efficient piezo-photocatalytic system for the NRR.
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Affiliation(s)
- Jie Yuan
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Wenhui Feng
- Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022, P. R. China
| | - Yongfan Zhang
- College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Jianyu Xiao
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Xiaoyan Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yinting Wu
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Wenkang Ni
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P. R. China
| | - Wenxin Dai
- State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, P. R. China
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6
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Liu S, Wang M, He Y, Cheng Q, Ji H, Huan Y, Shen X, Zhou X, Qian T, Yan C. Molecular Imprinting Technology Enables Proactive Capture of Nitrogen for Boosted Ammonia Synthesis under Ambient Conditions. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303703. [PMID: 37555529 DOI: 10.1002/adma.202303703] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/26/2023] [Indexed: 08/10/2023]
Abstract
Electrochemical nitrogen reduction reaction (NRR) is a burgeoning field for green and sustainable ammonia production, in which numerous potential catalysts emerge endlessly. However, satisfactory performances are still not realized under practical applications due to the limited solubility and sluggish diffusion of nitrogen at the interface. Herein, molecular imprinting technology is adopted to construct an adlayer with abundant nitrogen imprints on the electrocatalyst, which is capable of selectively recognizing and proactively aggregating high-concentrated nitrogen at the interface while hindering the access of overwhelming water simultaneously. With this favorable microenvironment, nitrogen can preferentially occupy the active surface, and the NRR equilibrium can be positively shifted to facilitate the reaction kinetics. Approximately threefold improvements in both ammonia production rate (185.7 µg h-1 mg-1 ) and Faradaic efficiency (72.9%) are achieved by a metal-free catalyst compared with the bare one. It is believed that the molecular imprinting strategy should be a general method to find further applicability in numerous catalysts or even other reactions facing similar challenges.
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Affiliation(s)
- Sisi Liu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Mengfan Wang
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Yanzheng He
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Qiyang Cheng
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Haoqing Ji
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Yunfei Huan
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
| | - Xiaowei Shen
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
| | - Xi Zhou
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
| | - Tao Qian
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
- Light Industry Institute of Electrochemical Power Sources, Suzhou, 215600, China
| | - Chenglin Yan
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
- Light Industry Institute of Electrochemical Power Sources, Suzhou, 215600, China
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7
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Gao J, Wu F, Zhao Y, Bian X, Zhou C, Tang J, Zhang T. Tuning the Interfaces of ZnO/ZnCr 2 O 4 Derived from Layered-Double-Hydroxide Precursors to Advance Nitrogen Photofixation. CHEMSUSCHEM 2023; 16:e202300944. [PMID: 37528771 DOI: 10.1002/cssc.202300944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/03/2023]
Abstract
Drawing inspiration from the enzyme nitrogenase in nature, researchers are increasingly delving into semiconductor photocatalytic nitrogen fixation due to its similar surface catalytic processes. Herein, we reported a facile and efficient approach to achieving the regulation of ZnO/ZnCr2 O4 photocatalysts with ZnCr-layered double hydroxide (ZnCr-LDH) as precursors. By optimizing the composition ratio of Zn/Cr in ZnCr-LDH to tune interfaces, we can achieve an enhanced nitrogen photofixation performance (an ammonia evolution rate of 31.7 μmol g-1 h-1 using pure water as a proton source) under ambient conditions. Further, photo-electrochemical measurements and transient surface photovoltage spectroscopy revealed that the enhanced photocatalytic activity can be ascribed to the effective carrier separation efficiency, originating from the abundant composite interfaces. This work further demonstrated a promising and viable strategy for the synthesis of nanocomposite photocatalysts for nitrogen photofixation and other challenging photocatalytic reactions.
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Affiliation(s)
- Junyu Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Fan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yunxuan Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- College of Science, Hebei University of Science and Technology, Shijiazhuang, 050018, P. R. China
| | - Xuanang Bian
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chao Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Junwang Tang
- Department of Chemical Engineering, University College London, Torrington Place, London, WC1E 7JE, United Kingdom
- Industrial Catalysis Center, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Tierui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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8
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Cheng Q, Wang M, Liu S, Zhang L, Ji H, He Y, Li N, Qian T, Yan C, Lu J. Eliminating Concentration Polarization with Cationic Covalent Organic Polymer to Promote Effective Overpotential of Nitrogen Fixation. Angew Chem Int Ed Engl 2023; 62:e202308262. [PMID: 37442810 DOI: 10.1002/anie.202308262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 07/07/2023] [Accepted: 07/13/2023] [Indexed: 07/15/2023]
Abstract
Electrocatalytic nitrogen reduction reaction offers a sustainable alternative to the conventional Haber-Bosch process. However, it is currently restricted by low effective overpotential due to the concentration polarization, which arises from accumulated products, ammonium, at the reaction interface. Here, a novel covalent organic polymer with ordered periodic cationic sites is proposed to tackle this challenge. The whole network exhibits strong positive charge and effectively repels the positively charged ammonium, enabling an ultra-low interfacial product concentration, and successfully driving the reaction equilibrium to the forward direction. With the given potential unchanged, the suppressed overpotential can be much liberated, ultimately leading to a continuous high-level reaction rate. As expected, when this tailored microenvironment is coupled with a transition metal-based catalyst, a 24-fold improvement is generated in the Faradaic efficiency (73.74 %) as compared with the bare one. The proposed strategy underscores the importance of optimizing dynamic processes as a means of improving overall performance in electrochemical syntheses.
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Affiliation(s)
- Qiyang Cheng
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Mengfan Wang
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Sisi Liu
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Lifang Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
| | - Haoqing Ji
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Yanzheng He
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Najun Li
- College of Chemistry, Chemical Engineering and materials science, Soochow University, Suzhou, 215006, China
| | - Tao Qian
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, 226019, China
| | - Chenglin Yan
- Collaborative Innovation Center of Suzhou Nano Science and Technology, College of Energy, Soochow University, Suzhou, 215006, China
| | - Jianmei Lu
- College of Chemistry, Chemical Engineering and materials science, Soochow University, Suzhou, 215006, China
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