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Li L, Liu Y, He Y, Xie Q, Peng X, Wu J, Zhao M, Karimi-Maleh H, Zhong N. In Situ and Continuous Decoding Hydrogen Generation in Solar Water-Splitting Cells. Anal Chem 2024; 96:12155-12164. [PMID: 38976234 DOI: 10.1021/acs.analchem.4c02323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Photoelectrochemical (PEC) water splitting is gaining recognition as an effective method for producing green hydrogen. However, the absence of in situ, continuous decoding hydrogen generation tools hampers a detailed understanding of the physics and chemistry involved in hydrogen generation within PEC systems. In this article, we present a quantitative, spatiotemporally resolved optical sensor employing a fiber Bragg grating (FBG) to probe hydrogen formation and temperature characteristics in the PEC system. Demonstrating this principle, we observed hydrogen formation and temperature changes in a novel cappuccino cell using a BiVO4/TiO2 photoanode and a Cu2O/CuO/TiO2 photocathode. Our findings demonstrate that FBG sensors can probe dynamic hydrogen formation at 0.5 s temporal resolution; these sensors are capable of detecting hydrogen concentrations as low as 0.6 mM. We conducted in situ and continuous monitoring of hydrogen and temperature to ascertain various parameters: the rate of hydrogen production at the photocathode surface, the time to reach hydrogen saturation, the distribution of hydrogen and temperature, and the rate of hydrogen transfer in the electrolyte under both external bias and unbiased voltage conditions. These results contribute valuable insights into the design and optimization of PEC water-splitting devices, advancing the in situ comprehensive monitoring of PEC water-splitting processes.
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Affiliation(s)
- Linyang Li
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Yang Liu
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Yuanyuan He
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Quanhua Xie
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Xiaoling Peng
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Junjun Wu
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems and School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
| | - Mingfu Zhao
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology, Chengdu 611731 Sichuan, China
- School of Electrical and Electronic Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Nianbing Zhong
- Chongqing Key Laboratory of modern photoelectric detection technology and instruments, Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection, Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology, Chongqing University of Technology, Chongqing 400054, China
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He Y, Zhang R, Wang Z, Ye H, Zhao H, Lu B, Du P, Lu X. Unveiling the Influence of Sulfur Doping on Photoelectrochemical Performance in BiVO 4/FeOOH Heterostructures. Anal Chem 2024; 96:110-116. [PMID: 38150391 DOI: 10.1021/acs.analchem.3c03287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
BiVO4 is a promising photoanode for photoelectrochemical (PEC) water splitting but suffers from high charge carrier recombination and sluggish surface water oxidation kinetics that limit its efficiency. In this work, a model of sulfur-incorporated FeOOH cocatalyst-loaded BiVO4 was constructed. The composite photoanode (BiVO4/S-FeOOH) demonstrates an enhanced photocurrent density of 3.58 mA cm-2, which is 3.7 times higher than that of the pristine BiVO4 photoanode. However, the current explanations for the generation of enhanced photocurrent signals through the incorporation of elements and cocatalyst loading remain unclear and require further in-depth research. In this work, the hole transfer kinetics were investigated by using a scanning photoelectrochemical microscope (SPECM). The results suggest that the incorporation of sulfur can effectively improve the charge transfer capacity of FeOOH. Moreover, the oxygen evolution reaction model provides evidence that S-doping can induce a "fast" surface catalytic reaction at the cocatalyst/solution interface. The work not only presents a promising approach for designing a highly efficient photoanode but also offers valuable insights into the role of element doping in the PEC water-splitting system.
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Affiliation(s)
- Yaorong He
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - Rongfang Zhang
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Ze Wang
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Huiqin Ye
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Huihuan Zhao
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Bingzhang Lu
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
| | - Peiyao Du
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
- College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, People's Republic of China
| | - Xiaoquan Lu
- Key Laboratory of Water Environment Protection in Plateau Intersection (Ministry of Education), Key Laboratory of Bioelectrochemistry and Environmental Analysis of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, People's Republic of China
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Fang Y, Hou Y, Fu X, Wang X. Semiconducting Polymers for Oxygen Evolution Reaction under Light Illumination. Chem Rev 2022; 122:4204-4256. [PMID: 35025505 DOI: 10.1021/acs.chemrev.1c00686] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Sunlight-driven water splitting to produce hydrogen fuel has stimulated intensive scientific interest, as this technology has the potential to revolutionize fossil fuel-based energy systems in modern society. The oxygen evolution reaction (OER) determines the performance of overall water splitting owing to its sluggish kinetics with multielectron transfer processing. Polymeric photocatalysts have recently been developed for the OER, and substantial progress has been realized in this emerging research field. In this Review, the focus is on the photocatalytic technologies and materials of polymeric photocatalysts for the OER. Two practical systems, namely, particle suspension systems and film-based photoelectrochemical systems, form two main sections. The concept is reviewed in terms of thermodynamics and kinetics, and polymeric photocatalysts are discussed based on three key characteristics, namely, light absorption, charge separation and transfer, and surface oxidation reactions. A satisfactory OER performance by polymeric photocatalysts will eventually offer a platform to achieve overall water splitting and other advanced applications in a cost-effective, sustainable, and renewable manner using solar energy.
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Affiliation(s)
- Yuanxing Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Yidong Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
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Cirone J, Dondapati JS, Chen A. Design of bimetallic nickel-iron quantum dots with tunable compositions for enhanced electrochemical water splitting. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.139016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Kumar S, Satpati AK. Investigation of interfacial charge transfer kinetics of photocharged Co-Bi modified BiVO4 using scanning electrochemical microscopy (SECM). Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137565] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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