阎鑫,高强,惠小艳,闫从祥,艾涛,王振军,孙国栋,苏兴华,赵鹏.g-C3N4/MoS2纳米片异质复合物的球磨法制备及可见光催化性能研究[J].稀有金属材料与工程,2018,47(10):3015~3020.[Yan Xin,Gao Qiang,Hui Xiaoyan,Yan Congxiang,AiTao,WangZhenjun,Sun Guodong,Su Xinghua,Zhao Peng.A facile ball milling method for fabricating g-C3N4/MoS2 nanosheets heterojunction and its visible light photocatalytic performances[J].Rare Metal Materials and Engineering,2018,47(10):3015~3020.]
g-C3N4/MoS2纳米片异质复合物的球磨法制备及可见光催化性能研究
投稿时间:2017-03-17  修订日期:2018-08-15
中文关键词:  MoS2纳米片  石墨相氮化碳  异质复合物  球磨  可见光催化
基金项目:陕西省自然基础科学基金 (2015JM2070);国家基金委自然基础科学基金(51402024) ;中央高校基本科研资助项目(300102318402)
中文摘要:
      采用球磨法制备g-C3N4/MoS2纳米片异质复合物,运用X-射线衍射仪、高分辨透射电镜、紫外可见漫反射光谱和荧光发射光谱对异质复合物的结构和形貌进行了表征。结果表明:MoS2纳米片可进入g-C3N4的层间形成异质复合物。以罗丹明B为模拟污染物,在可见光照射下考察了复合物的光催化特性。结果显示,含有2%的MoS2纳米片与g-C3N4形成的异质复合物在120min内对罗丹明B降解率为98%,其降解动力学常数是体相g-C3N4为的4.3倍。g-C3N4/MoS2纳米片异质复合物具有十分优良的光催化特性。其催化活性的提高主要归因于光生电子和空穴的有效分离和传输,并根据光捕获实验提出复合物可能的光催化机理。
A facile ball milling method for fabricating g-C3N4/MoS2 nanosheets heterojunction and its visible light photocatalytic performances
英文关键词:MoS2 nanosheets  graphite phase carbon nitride  heterojunction  ball milling  visible light photocatalysis
英文摘要:
      The g-C3N4/MoS2 nanosheets were prepared via a facile ball milling method. The composite photocatalysts were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV–vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The results indicated that MoS2 nanosheets were successfully coupled into the g- C3N4 to form C3N4/ MoS2 heterojunction. The photocatalytic activities were evaluated by degradation of organic Rhodamine B (RhB) under visible light irradiation. The kinetic constant of RhB degradation with g-C3N4/MoS2 nanosheets-2 wt % heterojunction (0.0368 min?1) is about 4.3 as high as that of the bulk g-C3N4 (0.00840 min?1). The enhanced photocatalytic activities can be mainly ascribed to the efficient separation and transportation of photo-induced electron-hole pairs. The possible photocatalytic mechanism of composites was proposed according to the light trapping experiment.
作者单位E-mail
阎鑫 长安大学材料科学与工程学院 xinyan@chd.edu.cn 
高强 长安大学材料科学与工程学院  
惠小艳 长安大学材料科学与工程学院  
闫从祥 长安大学材料科学与工程学院  
艾涛 长安大学材料科学与工程学院  
王振军 长安大学材料科学与工程学院  
孙国栋 长安大学材料科学与工程学院  
苏兴华 长安大学材料科学与工程学院  
赵鹏 长安大学材料科学与工程学院  
摘要点击次数: 22
全文下载次数: 8
查看全文  查看/发表评论  下载PDF阅读器
关闭