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Liu X, Hu L, Zhang Y, Lai H, Peng G, Li J, Zeng R, Yi Z. Carbon nitride quantum dots-modified cobalt phosphate for enhanced photocatalytic H 2 evolution. Photochem Photobiol 2024; 100:22-32. [PMID: 37057759 DOI: 10.1111/php.13811] [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: 02/09/2023] [Revised: 03/27/2023] [Accepted: 04/10/2023] [Indexed: 04/15/2023]
Abstract
In the present work, carbon nitride quantum dots (CNQDs)-modified cobalt phosphate (CoPi) composites CNQDs/CoPi-x (x = 1, 2, 3) were prepared at room temperature and characterized by FTIR, XRD, UV-Vis DRS, EIS, SEM, TEM/HR-TEM, XPS, and N2 gas adsorption. The morphologies and surface areas of CNQDs/CoPi-x have no remarkable change after modification of CNQDs, compared with pure CoPi. The obtained CNQDs/CoPi-x shows enhanced activity and stability of photocatalytic H2 evolution compared to pure CoPi using Eosin Y (EY) as a sensitizer and triethanolamine as an electron donor. The CNQDs/CoPi-2 possesses the highest hydrogen evolution rate, 234.5 μmol h-1 g-1 , upon visible light, which outshines that of CoPi by 2.4 times. It was believed that the enhanced photocatalytic performances of the CNQDs/CoPi-2 could result from the boosted electron transfer from radical EY·- to CNQDs/CoPi-2 by the employment of CNQDs; in addition, the visible-light activity of CNQDs contributes to hydrogen evolution. The mechanism of photocatalytic hydrogen production was discussed. This study may contribute toward the development of production of "green hydrogen" using solar.
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Affiliation(s)
- Xing Liu
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
- Hunan Provincial Key Laboratory of Functional Metal-Organic Compounds, Hengyang, China
- College of Hunan Province, Key Laboratory of Organometallic New Materials (Hengyang Normal University), Hengyang, China
| | - Longxin Hu
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
| | - Yujie Zhang
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
| | - Hua Lai
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
- Hunan Provincial Key Laboratory of Functional Metal-Organic Compounds, Hengyang, China
- College of Hunan Province, Key Laboratory of Organometallic New Materials (Hengyang Normal University), Hengyang, China
| | - Gang Peng
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
- Hunan Provincial Key Laboratory of Functional Metal-Organic Compounds, Hengyang, China
- College of Hunan Province, Key Laboratory of Organometallic New Materials (Hengyang Normal University), Hengyang, China
| | - Junhua Li
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
- Hunan Provincial Key Laboratory of Functional Metal-Organic Compounds, Hengyang, China
- College of Hunan Province, Key Laboratory of Organometallic New Materials (Hengyang Normal University), Hengyang, China
| | - Rongying Zeng
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
| | - Zhengji Yi
- College of Chemistry Materials, Hengyang Normal University, Hengyang, China
- Hunan Provincial Key Laboratory of Functional Metal-Organic Compounds, Hengyang, China
- College of Hunan Province, Key Laboratory of Organometallic New Materials (Hengyang Normal University), Hengyang, China
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Liang S, Ma Y, Luo H, Wu K, Chen J, Yang J. A Membrane-Free Decoupled Water Electrolyzer Operating at Simulated Fluctuating Renewables with Tri-Functional NiCo-P Electrode. Chemistry 2023; 29:e202302160. [PMID: 37434274 DOI: 10.1002/chem.202302160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 07/13/2023]
Abstract
Water electrolysis has been considered a promising technology for the conversion of renewables to hydrogen. However, preventing mixing of products (H2 and O2 ) and exploring cost-efficient electrolysis components remains challenging for conventional water electrolyzers. Herein, we designed a membrane-free decoupled water electrolysis system by using graphite felt supported nickel-cobalt phosphate (GF@Nix Coy -P) material as a tri-functional (redox mediator, hydrogen evolution reaction (HER), oxygen evolution reaction (OER)) electrode. The versatile GF@Ni1 Co1 -P electrode obtained by a one-step electrodeposition not only exhibits high specific capacity (176 mAh g-1 at 0.5 A g-1 ) and long cycle life (80 % capacity retention after 3000 cycles) as a redox mediator, but also has relatively outstanding catalytic activities for HER and OER. The excellent properties of the GF@Nix Coy -P electrode endow this decoupled system with more flexibility for H2 production by fluctuating renewable energies. This work provides guidance for multifunctional applications of transition metal compounds between energy storage and electrocatalysis.
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Affiliation(s)
- Shuaika Liang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yuanyuan Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Engineering Research Center of Advanced Glass Manufacturing Technology, Ministry of Education, Donghua University, Shanghai, 201620, China
| | - Hongxia Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Kangxi Wu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Jun Chen
- ARC Centre of Excellence for Electromaterials Science, Intelligent Polymer Research Institute, Australian Institute of Innovative Materials, Innovation Campus, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
- Engineering Research Center of Advanced Glass Manufacturing Technology, Ministry of Education, Donghua University, Shanghai, 201620, China
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Shang F, He H, Li P, Cai H, An B, Li X, Yang S, Sun Z, Wang B. PO 6 geometric configuration unit enhanced electrocatalytic performance of Co 3O 4 in acidic oxygen evolution. J Colloid Interface Sci 2023; 641:329-337. [PMID: 36934580 DOI: 10.1016/j.jcis.2023.03.036] [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: 01/16/2023] [Revised: 02/27/2023] [Accepted: 03/04/2023] [Indexed: 03/16/2023]
Abstract
It is challenging to develop high-efficient and stable nonprecious metal-based electrocatalyst for oxygen evolution reaction (OER) in acid for proton exchange membrane (PEM) water splitting. Herein, P atoms were introduced into the lattice of spinel Co3O4 (P-Co3O4) to replace with octahedral coordinated Co3+ via a hydrothermal process following a thermal treatment. The formation of PO6 geometric configuration unit in Co3O4 can trigger electron rearrangement around Co ions, which resulted in the high-active Co2+ site on the surface, significantly decreasing the energy barrier of rate-determining step for OER. Moreover, the weaker covalency of the Co 3d-O 2p bond and higher formation energy of oxygen vacancy around Co2+ in P-Co3O4 inhibited the participation of lattice oxygen during OER process, enabling that P-Co3O4 can work stably in acidic media. The obtained P-Co3O4 afforded satisfying stability over 30 h in a PEM electrolysis device with an overpotential of 400 mV@10 mA/cm2 in 0.1 M HClO4.
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Affiliation(s)
- Fanfan Shang
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Huijie He
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Peng Li
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Hairui Cai
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Bei An
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Xiaoqian Li
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Shengchun Yang
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China; National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China; Shaanxi Collaborative Innovation Center for Hydrogen Fuel Cell PerformanceImprovement, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China.
| | - Zhanbo Sun
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China
| | - Bin Wang
- MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter, Key Laboratory of Shaanxi for Advanced Materials and Mesoscopic Physics, State Key Laboratory for Mechanical Behavior of Materials, School of Physics, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China; National Innovation Platform (Center) for Industry-Education Integration of Energy Storage Technology, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China; Shaanxi Collaborative Innovation Center for Hydrogen Fuel Cell PerformanceImprovement, Xi'an Jiaotong University, No. 28 West Xianning Road, Xi'an 710049, China.
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Sethy SK, Majhi A, Brahma GS, Swain T. Thermal analysis of nano-crystallite phosphate containing composite paint enables for energy storage materials. INORG NANO-MET CHEM 2023. [DOI: 10.1080/24701556.2023.2165689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sisir Kumar Sethy
- Department of Chemistry, Model Degree College, Deogarh, Odisha, India
- P. G. Department of Chemistry, Fakir Mohan University, Balasore, Odisha, India;
| | | | - Gouri Sankhar Brahma
- Faculty of Science and Technology, ICFAI Foundation for Higher Education, Hyderabad, Telangana, India
| | - Trilochan Swain
- P. G. Department of Chemistry, Fakir Mohan University, Balasore, Odisha, India;
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Zhurenok AV, Markovskaya DV, Potapenko KO, Cherepanova SV, Saraev AA, Gerasimov EY, Kozlova EA. A Study of the Photocatalytic and Photovoltaic Properties of Photocatalysts Based on Carbon Nitride, Cobalt Phosphide, and Cobalt Phosphate. KINETICS AND CATALYSIS 2022. [DOI: 10.1134/s0023158422030107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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