摘要
通过原位沉积法合成了一种光催化活性强、稳定性高的MoSe2/Ag3PO4复合材料。MoSe2/Ag3PO4形成的异质结构能有效分离光生电子-空穴对,从而提高光催化活性。光生电子从Ag3PO4表面向MoSe2的转移降低了Ag+向金属Ag的可能性。当MoSe2和Ag3PO4的质量分数为1∶5(最优组合)时,MoSe2/Ag3PO4在可见光照射下30 min内降解RhB效率达98%,并且经过4次重复试验,其可见光照射下RhB降解效率仍可达到89%。通过液相色谱/质谱(LC/MS)技术测定光催化过程中产物的变化,提出了MoSe2/Ag3PO4光催化降解RhB的途径。
The as‑prepared MoSe2/Ag3PO4 by in⁃situ deposition showed favorable photocatalytic activity and stability.Heterostructure of MoSe2/Ag3PO4 had efficient separation of photogenerated electron‑hole pairs that led to the elevated photocatalytic activity.The transfer of photogenerated electrons from the surface of Ag3PO4 to MoSe2 reduced the possibility of Ag+to metallic Ag.When the mass ratio of MoSe2 and Ag3PO4 was 1∶5(champion combination),the obtained MoSe2/Ag3PO4 could reach to 98%for RhB degradation under visible light irradiation within 30 min.In addition,MoSe2/Ag3PO4 still achieved 89%of the degradation under visible light irradiation after four regenerations.Eventually,the photocatalytic degradation of RhB by MoSe2/Ag3PO4 was revealed by liquid chromatography/mass spectrometry(LC/MS).
作者
王新刚
刘凯
朱晖
李翀煜
林雷雷
郭峰
代洪亮
WANG Xin‑Gang;LIU Kai;ZHU Hui;LI Chong‑Yu;LIN Lei‑Lei;GUO Feng;DAI Hong‑Liang(School of Environmental and Chemical Engineering,Jiangsu University of Science and Technology,Zhenjiang,Jiangsu 212003,China;Marine Equipment and Technology Institute,Jiangsu University of Science and Technology,Zhenjiang,Jiangsu 212003,China;School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2021年第2期327-339,共13页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金项目(No.51908252)
中国博士后基金面上项目(No.2019M652274)
江西省博士后基金择优资助项目(No.2019KY17)
江苏省研究生科研与实践创新项目(No.SJCX19_1198)
镇江社会发展项目(No.2016014)
江苏省高校青年骨干教师青蓝工程项目和江苏科技大学海洋装备与技术研究院项目(No.HZ20190004)资助。
关键词
光催化
染料
硒化钼
磷酸银
光降解
photocatalysis
dyes
MoSe2
Ag3PO4
photodegradation
