化工学报2025，Vol.76Issue(3)：1064-1075,12.DOI:10.11949/0438-1157.20240968
高效空穴转移助力光催化碱性甲醇-水溶液制氢
Highly efficient hole transfer for promoting photocatalytic hydrogen production from alkaline methanol aqueous solution
摘要
Abstract
Safe hydrogen storage and efficient hydrogen production are critical challenges for the large-scale application of hydrogen energy.Utilizing methanol as a hydrogen storage medium and achieving mild continuous on-site hydrogen production through photo-driven methanol-water reforming is an effective approach for utilizing hydrogen energy.However,slow hole transfer kinetics and methanol dehydrogenation oxidation rate are bottlenecks that limit the performance of photocatalytic hydrogen production from methanol aqueous solution.Herein,based on the regulation of catalyst nanostructures,we constructed one-dimensional long diameter nanorod-like Zn0.5 Cd0.5 S(ZCS-LNR)photocatalyst to accelerate the photogenerated charge carrier separation and migration efficiency.By introducing NaOH alkaline medium,the rapid activation of OH-and efficient dehydrogenation ability of·OH are harnessed to facilitate surface hole transfer and enhance the rate of methanol oxidation dehydrogenation through the OH-/·OH redox couple,thereby achieving high-performance hydrogen production from an alkaline methanol aqueous solution.Among them,the ZCS-LNR catalyst can obtain a hydrogen production rate of 54.33 mmol/(g·h)under the conditions of room temperature,1.0 W/cm2 light intensity,4 mol/L NaOH and a CH3OH/H2O volume ratio of 1:1.This study provides a novel feasible reaction pathway for achieving efficient photocatalytic hydrogen production from methanol aqueous solution.关键词
催化剂/制氢/纳米结构/甲醇-水重整/空穴转移Key words
catalyst/hydrogen production/nanostructure/methanol-water reforming/hole transfer分类
化学化工引用本文复制引用
万俊,宋佳芮,范春煌,魏乐乐,聂依娜,刘琳..高效空穴转移助力光催化碱性甲醇-水溶液制氢[J].化工学报,2025,76(3):1064-1075,12.基金项目
国家自然科学基金项目(22369023,22169021) （22369023,22169021）
