核-壳光催化剂Cu-CdS@C3N4的制备及其性能研究  

Preparation of Core-Shell Photocatalyst Cu-CdS@C_3N_4 and Study on Its Performance

作　　者：江珍珍[1] 郑晋生[1] 王晟[1] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2017年第1期24-30,共7页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：国家自然科学基金项目(51372227)

摘　　要：以商业CdS粉末为原料,以硝酸铜(CuNO3)为铜源,在NaOH溶液的溶剂中通过水热法合成Cu^(2+)掺杂六方相CdS微米棒,并在其表面包覆一层C_3N_4以制备得到一种具有核壳结构的光催化剂Cu-CdS@C_3N_4。利用SEM、TEM、XRD、UV-Vis、FT-IR等测试手段对其形貌结构及相关性能进行表征,并使用亚甲基蓝(MB)溶液作为目标污染物,通过改变Cu^(2+)的掺杂量和包覆C_3N_4的比率,研究Cu-CdS@C_3N_4光催化性能。实验结果表明:当Cu^(2+)掺杂量为10wt%,包覆的C_3N_4量为20wt%时,可得到形貌规整且光催化性能最佳的可见光催化剂。Cu^2＋-doped CdS microrods （Cu-CdS） were prepared via hydrothermal method by using CdS and Cu（NO3）2 as raw material and copper source respectively in NaOH solution. Then, Cu-CdS was coated with a layer of C3N4 to produce a visible-light photocatalyst with core-shell structure Cu-CdS@ C3N4. The morphology, structure and relevant performance of Cu-CdS @ C3N4 composites were characterized by SEM, TEM, XRD, UV-Vis and FT-IR. Besides, methylene blue （MB） solution was used as the target pollutant to study photocatalytic performance of Cu-CdS@C3 N4 by changing doping content of Cu2＋ and the ratio of coated C3N4. The experimental results reveal that the visible-light photocatalysis with regular morphology and optimal photocatalytic performance could be gained under the following conditions： doping content of Cu2＋ 10 wt% and amount of coated C3N4 20 wt%.

关 键 词：可见光催化 水热法 Cu^2+掺杂 核一壳光催化剂 

分 类 号：O611.2[理学—无机化学]