物理化学学报2026，Vol.42Issue(7)：80-95,16.DOI:10.1016/j.actphy.2025.100211
范德华S型异质结赋予快速电荷转移助力光催化活性提升
Rapid charge transfer endowed by van der Waals S-scheme heterojunction for boosting photocatalytic activity
摘要
Abstract
The rational design of efficient step-scheme(S-scheme)heterojunctions is a significant breakthrough in photocatalysis,holding great potential to enhance eco-friendly environmental restoration and energy conversion technologies.However,conventional S-scheme heterojunctions frequently suffer from lattice mismatch issues,which severely compromise the efficacy of built-in electric fields in charge separation.To address this limitation,we developed an innovative in situ deposition strategy to construct van der Waals S-scheme heterojunctions within Bi2O2S-BiOBr composites.This approach effectively mitigates lattice mismatch and ensures intimate interfacial contact,enabling the formation of a strong internal electric field that facilitates efficient carrier migration.The Bi2O2S-BiOBr composites exhibit an extended light absorption range exceeding 700 nm,allowing for broad-spectrum photocatalytic activity.Under Xenon lamp irradiation,the Bi2O2S-BiOBr composites demonstrated outstanding photocatalytic efficiency in the degradation of ciprofloxacin(CIP).Notably,the 20%Bi2O2S-BiOBr composite achieved 93%CIP removal within 15 min,outperforming all other tested composites.The notable enhancement in performance stems from the van der Waals S-scheme heterojunction,which facilitates highly efficient separation of photogenerated carriers.This work provides valuable insights for the strategic design of advanced van der Waals heterostructures with S-scheme charge transfer mechanisms.关键词
S型异质结/范德华力/光催化降解/电荷分离/Bi2O2S-BiOBr复合材料Key words
S-scheme heterojunction/Van der Waals/Photocatalytic degradation/Charge separation/Bi2O2S-BiOBr composite分类
化学化工引用本文复制引用
许凯强,于佳,夏伟,张建军,韩生..范德华S型异质结赋予快速电荷转移助力光催化活性提升[J].物理化学学报,2026,42(7):80-95,16.基金项目
本研究得到环境光催化应用技术湖南省重点实验室开放项目(2214505) （2214505）
上海应用技术大学引进人才科研启动项目(YJ2023-7) （YJ2023-7）
国家自然科学基金(22278269) （22278269）
教育部联合基金(8091B02052304) （8091B02052304）
新疆生产建设兵团引导计划项目(2024ZD013) （2024ZD013）
上海市教育委员会科研项目(2023ZKZD54) （2023ZKZD54）
上海市产业协同创新项目(XTCX-KJ-2022-70)的资助 （XTCX-KJ-2022-70）
