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Zhang F, Dong H, Li Y, Fu D, Yang L, Shang Y, Li Q, Shao Y, Gang W, Ding T, Chen T, Zhu W. In Situ Metal-Oxygen-Hydrogen Modified B-Tio 2 @Co 2 P-X S-Scheme Heterojunction Effectively Enhanced Charge Separation for Photo-assisted Uranium Reduction. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305439. [PMID: 38050661 PMCID: PMC10953717 DOI: 10.1002/advs.202305439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 10/27/2023] [Indexed: 12/06/2023]
Abstract
Photo-assisted uranium reduction from uranium mine wastewater is expected to overcome the competition between impurity ions and U(VI) in the traditional process. Here, B-TiO2 @Co2 P-X S-scheme heterojunction with metal-oxygen-hydrogen (M-O-H) is developed insitu modification for photo-assisted U(VI) (hexavalent uranium) reduction. Relying on the DFT calculation and Hard-Soft-Acid-Base (HSAB) theory, the introduction of metal-oxygen-hydrogen (M-O-H, hard base) metallic bonds in the B-TiO2 @Co2 P-X is found to enhance the hydrophilicity and the capture capability for uranyl ion (hard acid). Accordingly, B-TiO2 @Co2 P-500 hybrid nanosheets exhibit excellent U(VI) reduction ability (>98%) in the presence of competing ions. By self-consistent energy band calculations and in-situ KPFM spectral analysis, the formation of the internal electric field between B-TiO2 and Co2 P at the heterojunction is proven, offering a strong driving force and atomic transportation highway for accelerating the S-scheme charge carriers directed migration and promoting the photocatalytic reduction of uranium. This work provides a valuable route to explore the functionally modified photocatalyst with high-efficiency photoelectron separation for U(VI) reduction.
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Affiliation(s)
- Fucheng Zhang
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Huanhuan Dong
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Yi Li
- School of Materials and EnergyUniversity of Electronic Science and TechnologyChengdu610000P.R. China
| | - Dengjiang Fu
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Lu Yang
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Yupeng Shang
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Qiuyang Li
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Yuwen Shao
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Wu Gang
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Tao Ding
- University of Science and Technology of ChinaNational Synchrotron Radiation LaboratoryHefei230029P. R. China
| | - Tao Chen
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
| | - Wenkun Zhu
- State Key Laboratory of Environment‐friendly Energy Materials, National Co‐innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Co‐Innovation Center for New Energetic Materials, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Academy of Defense Technology, School of Life Science and EngineeringSouthwest University of Science and Technology59 Qinglong StreetMianyangSichuan621010P. R. China
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