日用化学工业（中英文）2025，Vol.55Issue(5)：573-580,8.DOI:10.3969/j.issn.2097-2806.2025.05.005
CdS/g-C3N4复合材料的制备及对刚果红的光催化降解
Preparation of a CdS/g-C3N4 composite and its performance in photocatalytic degradation of congo red
摘要
Abstract
A CdS/g-C3N4 composite was prepared by hydrothermal method using cadmium sulfide(CdS)and graphitic carbon nitride(g-C3N4)as precursors.This CdS/g-C3N4 composite material had high specific surface area and rich mesoporous structure.The average grain size was 11.0 nm and the band gap energy was 2.43 eV.The UV-visible diffuse reflectance spectrum showed a significant red shift,and the spectral absorption range became wider.The typical emission peak intensity in fluorescence spectrum was significantly lower than that of the pure-phase material,which realized the efficient photoelectron-hole separation.Congo red(CR)dye was used as the target pollutant to carry out photocatalytic experiments.When 30 mg CdS/g-C3N4 composite was added to 100 mL of CR dye solution with a mass concentration of 20 mg/L at pH of 7.0,the removal percentage of CR was 95.99%,and the CdS/g-C3N4 composite material showed good stability.Mechanism analysis showed that the efficient degradation of CR dye was achieved under the synergistic effect of electric field and highly active superoxide anion radicals(·O2-)in the S-scheme charge transfer mechanism.关键词
CdS/g-C3N4/复合材料/光催化/刚果红/异质结Key words
CdS/g-C3N4/composite material/photocatalysis/congo red/heterojunction分类
化学引用本文复制引用
朱砚,李薇,邱小燕..CdS/g-C3N4复合材料的制备及对刚果红的光催化降解[J].日用化学工业（中英文）,2025,55(5):573-580,8.基金项目
江苏省高等学校基础科学(自然科学)研究项目面上项目(23KJD220003) （自然科学）
