可见光响应的MoS_(2)纳米花及其光催化性能研究  

Visible Light Responsive MoS_(2) Nanofl ower and Its Photocatalytic Performance Study

作　　者：许相花 林正宇 赵宇[1] 王圣康 邵宗涵 柴希娟[1] Xu Xianghua;Lin Zhengyu;Zhao Yu;Wang Shengkang;Shao Zonghan;Chai Xijuan(Yunnan Key Laboratory of Wood Adhesive and Glued Products,Southwest Forestry University,Yunnan,650224)

机构地区：[1]西南林业大学云南省木材胶黏剂及胶合制品重点实验室,云南650224

出　　处：《当代化工研究》2022年第19期24-26,共3页Modern Chemical Research

基　　金：国家自然科学基金“新型Gd-N-TiO_(2)/g-C_(3)N_(4)/木素基泡沫炭复合材料原位生长机制及应用基础研究”(项目编号:31960297);国家级大学生创新创业训练计划项目“可见光响应的新型石墨烯-MoS2基纳米复合材料光催化处理水体中难降解有机污染物的研究”(项目编号:202010677021)。

摘　　要：采用水热法制备了钴掺杂MoS_(2)纳米花,用于降解罗丹明B。研究表明,Co掺杂有利减小MoS_(2)纳米花的尺寸、提高其比表面积及暴露在外的活性位点数量,进而提高样品光催化性能。其中,Co掺杂量为3mmol样品的光催化性能最优,其一级反应动力学k为纯MoS_(2)的4.46倍。光学特性显示,掺杂Co有效提高了MoS_(2)对可见光的吸收强度及光生载流子的分离效率。Cobalt-doped MoS_(2) nanoflowers were prepared by hydrothermal method for the degradation of rhodamine B.It was shown that Co doping was beneficial to reduce the size of MoS_(2) nanoflowers,increase the specific surface area and the number of exposed active sites,and thus improve the photocatalytic performance of the samples.Among them,the optimum photocatalytic performance was obtained for the sample with Co doping of 3 mmol,and its first-order reaction kinetics k was 4.46 times higher than that of pure MoS_(2).The optical properties showed that the doped Co effectively improved the absorption intensity of visible light and the separation efficiency of photogenerated carriers by MoS_(2).

关 键 词：二硫化钼 光催化降解 掺钴 罗丹明B 

分 类 号：TQ116[化学工程—无机化工]