烟台大学学报（自然科学与工程版）2026，Vol.39Issue(2)：233-239,7.DOI:10.13951/j.cnki.37-1213/n.250407
Co掺杂ZnO材料的发光特性与光催化性能
Luminescence Properties and Photocatalytic Performance of Co Doped ZnO Materials
摘要
Abstract
ZnO composite photocatalysts doped with different concentrations of cobalt(Co)were prepared using the microwave hydrothermal synthesis method.Their crystal structure,micromorphology,and luminescence characteris-tics were characterized,and their photocatalytic performance was investigated.The results showed that the Co-doped ZnO samples retained a hexagonal bipyramidal structure.With increasing Co concentration,the crystallinity gradually improved while the crystallite size decreased.This reduction in size increased the specific surface area of the samples,providing more active sites for surface photocatalytic reactions.Furthmore,Co doping induced a blue shift in the ultraviolet emission peak and a red shift in the visible emission peak,while the overall photolumines-cence intensity initially decreased and then increased.These changes not only expanded the light absorption range,but also optimized the separation efficiency of photogenerated charge carriers.Using the degradation of methylene blue(MB)as a model reaction,experiments confirmed that the photocatalytic performance of the Co-ZnO compos-ites was significantly superior to that of pure ZnO.This enhancement is attributed to the suppression of electron-hole pair recombination by Co2+incorporation.Notably,the sample with a Co doping ratio(nCo/nZn)of 4%exhibited the optimal photocatalytic performance,achieving the highest MB degradation rate.关键词
Co掺杂/ZnO/光致发光/光催化Key words
Co doping/ZnO/photoluminescence/photocatalysis分类
通用工业技术引用本文复制引用
杨莹莹,李开,苑金艺,庞鲁羿,何涛,孙元平..Co掺杂ZnO材料的发光特性与光催化性能[J].烟台大学学报（自然科学与工程版）,2026,39(2):233-239,7.基金项目
国家自然科学基金资助项目(12374031). （12374031）
