物理化学学报2026，Vol.42Issue(2)：109-121,13.DOI:10.1016/j.actphy.2025.100143
NH2-MIL-125/Na掺杂g-C3N4复合S型异质结的构建及其光催化产过氧化氢性能
Construction of NH2-MIL-125/Na-doped g-C3N4 composite S-scheme heterojunction and its performance in photocatalytic hydrogen peroxide production
摘要
Abstract
Heterogeneous structure building has proven to be an effective strategy for achieving efficient charge separation and improving photocatalytic performance.In this study,based on the synergistic optimization strategy of elemental doping and heterostructure construction,an S-scheme heterojunction photocatalyst(x%NMT/Na-CN)composed of titanium-based metal-organic framework(NH2-MIL-125,abbreviated as NMT)and sodium-doped carbon nitride(Na-CN)was constructed by a simple impregnation method.The energy band structure of the catalysts was modulated by intra-layer doping of Na,which introduced nitrogen defects and improved the separation efficiency of photogenerated charges.In addition,the composite of Na-CN and NMT formed an S-scheme heterojunction,which further improved the photogenerated charge separation efficiency while retaining the strong redox ability of the composite catalyst.Owing to the synergistic effect of Na doping and NMT composite,the photocatalytic H2O2 production rate of 15%NMT/Na-CN in isopropanol solution was as high as 2474.6 μmol g-1 h-1,which was 38 times higher than that of unmodified bulk carbon nitride.This work offers a novel approach to realize the efficient production of H2O2 from carbon nitride-based photocatalysts based on the doping-heterojunction synergistic optimization strategy.关键词
氮化碳/MOF/过氧化氢/S型异质结/掺杂Key words
Carbon nitride/MOF/Hydrogen peroxide/S-scheme heterojunction/Doping分类
化学化工引用本文复制引用
樊凡,修浩,王宇婷,崔永朋,王雅君..NH2-MIL-125/Na掺杂g-C3N4复合S型异质结的构建及其光催化产过氧化氢性能[J].物理化学学报,2026,42(2):109-121,13.基金项目
国家重点研发计划(2021YFB4000405、2019YFC1904500)、国家自然科学基金(52270115、52236003、21777080)资助项目 （2021YFB4000405、2019YFC1904500）
