0D Cd-In-S固溶体的制备及其光催化降解性能研究
Preparation and photocatalytic degradation of 0D Cd-In-S solid solution
余昊 1陈艳艳 1王爽 1李智强 1李伸杰 1胡齐1
作者信息
- 1. 合肥工业大学化学与化工学院,安徽合肥 230009
- 折叠
摘要
由于含有S3p轨道,窄带隙金属硫化物的价带具有更高能级位置,能利用可见光降解有机污染物.文章通过一步法制备0D Cd-In-S三元固溶体,并考察其在可见光下催化降解甲基橙(methyl orange,MO)的性能.通过 X-射线衍射(X-ray diffraction,XRD)、透射电子显微镜(transmission electron microscope,TEM)、紫外-可见吸收光谱(UV-vis)等测试手段对固溶体纳米颗粒的结构、形貌和光学性能进行表征.研究发现,与CdS、In2S3相比,合金化后的Cd-In-S固溶体具有更为优异的性质,其中Cd0.7In0.3S1.15在60 min内对MO的降解效率可达93.47％,远高于纯CdS和In2S3;电化学研究数据表明,高降解效率来自于适宜的带隙位置和带宽以及更高的光生电子空穴对分离效率.
Abstract
Due to the S 3p orbital,the valence band of metal sulfide with narrow band gap has higher energy level position,which has aroused great interest in the field of degradation of organic pollutants by visible light.In this paper,0D Cd-In-S ternary solid solution was prepared by one-step preparation method,and its catalytic degradation of methyl orange(MO)under visible light was investigated.The structure,morphology and optical properties of the solid solution nanoparticles were characterized by X-ray diffraction(XRD),transmission electron microscope(TEM),and UV-vis spectroscopy.It is found that the alloyed Cd-In-S solid solution has better properties than CdS and In2S3.The degrada-tion efficiency of Cd0.7In0.3S1.15 to MO was up to 93.47％within 60 min,which was much higher than that of CdS and In2S3.The electrochemical data shows that the high degradation efficiency comes from the appropriate band gap position and bandwidth,as well as the higher separation efficiency of photo-generated electron-hole pair.
关键词
纳米晶/0D/Cd-In-S三元固溶体/光催化/甲基橙(MO)/可见光Key words
nanocrystals/0D Cd-In-S ternary solid solution/photocatalysis/methyl orange(MO)/vis-ible light引用本文复制引用
基金项目
国家自然科学基金青年科学基金资助项目(51502070)
安徽省自然科学基金资助项目(1808085ME111)
中央高校基本科研业务费专项资金资助项目(JZ2018YYPY0307)
中央高校基本科研业务费专项资金资助项目(JZ2019YYPY0032)
中央高校基本科研业务费专项资金资助项目(JZ2021HGTB0121)
中央高校基本科研业务费专项资金资助项目(JZ2021HGTB0099)
出版年
2024
NETL
NSTL
万方数据