Integrating Overall Water Splitting with Advanced Oxidation for Wastewater Treatment Using a Bifunctional Medium-Entropy Amorphous AlloyOA
Hydrogen energy is regarded as a clean and reliable approach for storing intermittent energy sources.However,stringent water quality requirements remain critical challenges.The development of a bifunctional catalyst capable of simultaneously driving overall water splitting and degrading pollutants in wastewater can substantially enhance energy utilization efficiency and enable resource recycling.Nevertheless,the mismatch in the optimal pH conditions and the difficulty in balancing degradation efficiency and electrolysis performance remain notable obstacles.In this study,(FeCoNi)80B20 medium-entropy amorphous alloy(MEAA)fibers were prepared using a low-cost melt-extraction method.Owing to the crystalline–amorphous heterostructure,the fibers achieved complete decolorization within 90 s,while remaining effective across a wide p H range.In addition,the(FeCoNi)_(80)B_(20)delivered overpotentials of 275 and 220 mV for the oxygen evolution reaction and hydrogen evolution reaction,respectively.By synchronizing both catalytic reactions,the(FeCoNi)_(80)B_(20)enabled direct water splitting in reclaimed water,achieving complete decolorization while preserving electrocatalytic stability in an anion-exchange-membrane electrolyzer for 100 h under highly alkaline conditions(pH=13.6).Moderate OH^(*)adsorption endowed(FeCoNi)_(80)B_(20)with excellent ability.This bifunctional catalyst addresses the coupled challenges of energy storage and water scarcity and offers a promising foundation for industrial implementation.
Yifan Cui;Yonghui Wang;Bo Li;Jiaqi Huang;Le Bo;Hengqi Liu;Mahlanyane Kenneth Mathe;Murodjon Samadiy;Shengfeng Guo;Hongxian Shen;Jianfei Sun;Sida Jiang
School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China Laboratory for Space Environment and Physical Sciences,Harbin Institute of Technology,Harbin 150001,People’s Republic of China Frontier Science Center for Interaction Between Space Environment and Matter,and National Key Laboratory of Space Environment and Matter Behaviors,Harbin,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Physics,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Physics,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaDepartment of Chemistry,University of South Africa,Johannesburg 1709,South AfricaDepartment of Chemical Engineering and Biotechnology,Karshi State Technical University,180100 Karshi,UzbekistanSchool of Materials and Energy,Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies,Southwest University,Chongqing 400715,People’s Republic of ChinaSchool of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of ChinaSchool of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,People’s Republic of China Laboratory for Space Environment and Physical Sciences,Harbin Institute of Technology,Harbin 150001,People’s Republic of China Frontier Science Center for Interaction Between Space Environment and Matter,and National Key Laboratory of Space Environment and Matter Behaviors,Harbin,People’s Republic of China National Key Laboratory for Precision Hot Forming,Harbin Institute of Technology,Harbin 150001,People’s Republic of China
资源环境
Medium-entropy amorphous alloyCrystalline-amorphous heterostructureWater splittingWater remediationWater–energy nexus strategy
《Nano-Micro Letters》 2026 (9)
P.1159-1176,18
supported by the National Natural Science Foundation of China(Grant No.52271028)the Key Research and Development Program of Heilongjiang Province(2024ZX02C24)the support from the National Natural Science Foundation of China(Grant No.52571184)。
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