Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction
Abstract Rhenium dichalcogenides (ReX2, X = S or Se) are catalysts that have great promise for the photoenhanced hydrogen evolution reaction (PE‐HER) because of their unique physiochemical properties. However, the catalytic performance is still restricted by their low concentration of electrocatalyt...
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| Format: | Article |
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Wiley
2020-05-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202000216 |
| _version_ | 1819225383775502336 |
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| author | Ran Wang Jiecai Han Ping Xu Tangling Gao Jun Zhong Xianjie Wang Xinghong Zhang Zhijun Li Lingling Xu Bo Song |
| author_facet | Ran Wang Jiecai Han Ping Xu Tangling Gao Jun Zhong Xianjie Wang Xinghong Zhang Zhijun Li Lingling Xu Bo Song |
| author_sort | Ran Wang |
| collection | DOAJ |
| description | Abstract Rhenium dichalcogenides (ReX2, X = S or Se) are catalysts that have great promise for the photoenhanced hydrogen evolution reaction (PE‐HER) because of their unique physiochemical properties. However, the catalytic performance is still restricted by their low concentration of electrocatalytic activity sites and poor injection of hot electrons. Herein, dual‐enhancement in ReSe2 nanosheets (NSs) with high concentration of active sites and efficient use of hot electrons is simultaneously achieved with moderate Mo doping. Contributions from exposed catalytically active sites, improved electrical conductivity, and enhanced solar spectral response are systematically investigated. Superior PE‐HER catalytical performance is obtained in Re0.94Mo0.06Se2, which has more catalytically active sites and optimized band structure than other Re1−xMoxSe2 samples. Here, it is demonstrated that only doping can reduce the overpotential (η10) from 239 to 174 mV at −10 mA cm−2 (Δ1η10 = 65 mV). Then, η10 is further improved to 137 mV under simulated AM 1.5 sun illumination (Δ2η10 = 37 mV). The total improvement (Δη10) toward PE‐HER is 102 mV (Δ1η10 + Δ2η10 = 102 mV) in optimal Re0.94Mo0.06Se2. This work presents a new perspective for researching high‐efficiency photoenhanced HER ReSe2‐based electrocatalysts and other layered transition metal dichalcogenides. |
| first_indexed | 2024-12-23T10:08:44Z |
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| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-23T10:08:44Z |
| publishDate | 2020-05-01 |
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| series | Advanced Science |
| spelling | doaj.art-fc4daeebb732439ba77ae7db0727a0ec2022-12-21T17:51:01ZengWileyAdvanced Science2198-38442020-05-0179n/an/a10.1002/advs.202000216Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution ReactionRan Wang0Jiecai Han1Ping Xu2Tangling Gao3Jun Zhong4Xianjie Wang5Xinghong Zhang6Zhijun Li7Lingling Xu8Bo Song9National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 ChinaSchool of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 ChinaInstitute of Petrochemistry Heilongjiang Academy of Sciences Harbin 150040 ChinaInstitute of Functional Nano and Soft Materials Soochow University Suzhou Jiangsu 215123 ChinaDepartment of Physics Harbin Institute of Technology Harbin 150001 ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 ChinaShanghai Synchrotron Radiation Facility Shanghai Institute of Applied Physics Shanghai 201800 ChinaKey Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education School of Physics and Electronic Engineering Harbin Normal University Harbin 150025 ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 ChinaAbstract Rhenium dichalcogenides (ReX2, X = S or Se) are catalysts that have great promise for the photoenhanced hydrogen evolution reaction (PE‐HER) because of their unique physiochemical properties. However, the catalytic performance is still restricted by their low concentration of electrocatalytic activity sites and poor injection of hot electrons. Herein, dual‐enhancement in ReSe2 nanosheets (NSs) with high concentration of active sites and efficient use of hot electrons is simultaneously achieved with moderate Mo doping. Contributions from exposed catalytically active sites, improved electrical conductivity, and enhanced solar spectral response are systematically investigated. Superior PE‐HER catalytical performance is obtained in Re0.94Mo0.06Se2, which has more catalytically active sites and optimized band structure than other Re1−xMoxSe2 samples. Here, it is demonstrated that only doping can reduce the overpotential (η10) from 239 to 174 mV at −10 mA cm−2 (Δ1η10 = 65 mV). Then, η10 is further improved to 137 mV under simulated AM 1.5 sun illumination (Δ2η10 = 37 mV). The total improvement (Δη10) toward PE‐HER is 102 mV (Δ1η10 + Δ2η10 = 102 mV) in optimal Re0.94Mo0.06Se2. This work presents a new perspective for researching high‐efficiency photoenhanced HER ReSe2‐based electrocatalysts and other layered transition metal dichalcogenides.https://doi.org/10.1002/advs.202000216dual‐enhanced dopingphotoenhanced hydrogen evolution reaction (PE‐HER)ReSe 2 nanosheets |
| spellingShingle | Ran Wang Jiecai Han Ping Xu Tangling Gao Jun Zhong Xianjie Wang Xinghong Zhang Zhijun Li Lingling Xu Bo Song Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction Advanced Science dual‐enhanced doping photoenhanced hydrogen evolution reaction (PE‐HER) ReSe 2 nanosheets |
| title | Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction |
| title_full | Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction |
| title_fullStr | Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction |
| title_full_unstemmed | Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction |
| title_short | Dual‐Enhanced Doping in ReSe2 for Efficiently Photoenhanced Hydrogen Evolution Reaction |
| title_sort | dual enhanced doping in rese2 for efficiently photoenhanced hydrogen evolution reaction |
| topic | dual‐enhanced doping photoenhanced hydrogen evolution reaction (PE‐HER) ReSe 2 nanosheets |
| url | https://doi.org/10.1002/advs.202000216 |
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