辽宁石油化工大学学报2025，Vol.45Issue(2)：38-45,8.DOI:10.12422/j.issn.1672-6952.2025.02.005
载体空心微珠Ag掺杂TiO2光催化剂性能及第一性原理分析
Performance of Carrier Hollow Microsphere Silver Doped Titanium Dioxide Photocatalyst and First-Principles Analysis
摘要
Abstract
Silver-doped powders with n(Ag+)/n(Ti4+)of 0.001、0.003、0.005、0.010、0.030 and 0.050 and ceramic hollow microspheres loaded with titanium dioxide photocatalyst were prepared by sol-gel method.The prepared catalysts were characterized by SEM,XRD and Uv-Vis DRS,and their photocatalytic properties were tested under xenon lamp light source.The doping mechanism was analyzed using first-principles calculations.The results show that the degradation rate of 0.005Ag-TiO2 powder after photocatalytic degradation of 10 mg/L methylene blue for 90 min is 76%.It is concluded that n(Ag+)/n(Ti4+)=0.005 is the best doping amount,and the degradation rate of ceramic hollow microsphere supported catalyst for 90 min is 97%.Ag doping can introduce impurity energy levels in the TiO2 system,so that the valence band electrons can reach the conduction band by hierarchical transition.The calculation results are consistent with the experimental results.关键词
TiO2/空心微珠/光催化/Ag掺杂/可见光/第一性原理Key words
TiO2/Hollow microspheres/Photocatalytic/Silver doped/Visible light/First principle分类
化学引用本文复制引用
郝国栋,孙浩轩,李聪..载体空心微珠Ag掺杂TiO2光催化剂性能及第一性原理分析[J].辽宁石油化工大学学报,2025,45(2):38-45,8.基金项目
国家自然科学基金项目(51672120) （51672120）
双一流学科协同创新成果建设项目(LJGXCG2022-132) （LJGXCG2022-132）
黑龙江省教育厅科研平台专项项目(1453PT006) （1453PT006）
黑龙江省自然科学基金项目(LH2023E101) （LH2023E101）
牡丹江师范学院教学改革项目(SJGYB2024687). （SJGYB2024687）
