摘要
以三聚氰胺、硝酸铈为原料,通过高温煅烧法制备了不同CeO_(2)含量的片层状g-C_(3)N_(4)/CeO_(2),通过XRD、FT-IR、XPS等对系列g-C_(3)N_(4)-CeO_(2)材料进行了表征,考察了材料在可见光(λ≥420nm)条件下降解盐酸四环素(TC)的光催化活性。与单纯的g-C_(3)N_(4)相比,g-C_(3)N_(4)/CeO_(2)-30%具有更优异的光催化性能,这是由于g-C_(3)N_(4)-CeO_(2)间的异质结作用促进了光生电子和空穴分离。自由基捕获实验证实·O_(2)^(-)在催化反应过程中起到主要作用,并提出了相应的光催化机理。
Using melamine and cerium nitrate as raw materials, lamellar g-C_(3)N_(4)/CeO_(2)with different CeO_(2)contents were prepared by high temperature calcination. The g-C_(3)N_(4)/CeO_(2)materials were characterized by XRD, FT-IR, XPS, etc. The photocatalytic activity of the material for degrading tetracycline hydrochloride(TC) under visible light(λ≥420 nm) was investigated. Compared with pure g-C_(3)N_(4), g-C_(3)N_(4)/CeO_(2)-30% has more excellent photocatalytic performance, which is due to the heterojunction between g-C_(3)N_(4)and CeO_(2)that promotes the separation of photogenerated electrons and holes. Radical trapping experiments confirmed that ·O_(2)^(-) played a major role in the catalytic reaction process, and the corresponding photocatalytic mechanism was proposed.
作者
张茜
梁海欧
李春萍
白杰
Zhang Xi;Liang Haiou;Li Chunping;Bai Jie(Collage of Chemical Engineering,Inner Mongolia University of Technology,H+ohhot,010051)
出处
《化学通报》
CAS
CSCD
北大核心
2022年第12期1475-1482,1409,共9页
Chemistry
基金
国家自然科学基金项目(51772158)资助。
