CdS/In2O3/g-C3N4复合材料的制备及光催化性能研究
Synthesis of CdS/In2O3/g-C3N4 composite and study on its photocatalytic performance
朱蓓蓓 1周杰 2张海滨 2刁国旺3
作者信息
- 1. 南通职业大学药品与环境工程学院,江苏 南通 226007;扬州大学化学化工学院,江苏 扬州 225002
- 2. 南通职业大学药品与环境工程学院,江苏 南通 226007
- 3. 扬州大学化学化工学院,江苏 扬州 225002
- 折叠
摘要
采用溶剂热法成功合成了一种新型的Z型CdS/In2O3/g-C3N4 三元复合光催化材料.通过XRD、SEM、TEM、XPS和紫外-可见漫反射光谱仪对光催化材料的相结构、形貌、原子价态和光响应性能等进行表征,通过可见光降解苯酚评价其光催化活性.结果表明,具有零维结构的CdS、一维结构的In2O3 和三维结构的g-C3N4 形成了 0D/1D/3D三元复合材料,该材料在180 min可有效降解90%的苯酚,降解速率是CdS的 2.9 倍、g-C3N4 的 6 倍,且具有较高的稳定性.复合材料光催化能力的增强主要归因于三维多孔g-C3N4 与CdS和In2O3 形成的三维空间电场.三维多孔结构不仅有利于污染物的高效吸附,而且为光催化反应提供活性位点,三维空间和网络互连结构有利于光生电荷的定向迁移,增加载流子寿命.
Abstract
A novel Z-type CdS/In2O3/g-C3N4 ternary composite photocatalytic material is successfully synthesized via solvothermal method,and its phase structure,morphology,atomic valence state and light response performance are characterized by means of XRD,SEM,TEM,XPS and UV-visible diffuse reflection spectroscopy.Its photocatalytic activity is evaluated through visible photodegradation of phenol.Results show that CdS with zero dimensional structure,In2O3 with one-dimensional structure,and g-C3N4 with three-dimensional structure together form the 0D/1D/3D ternary composite material.The material has effectively degraded 90%of phenol in 180 minutes,delivering a phenol degradation rate 2.9 times that by CdS and 6 times that by g-C3N4,and showing a high stability.The enhancement of the photocatalytic ability of composite material is mainly attributed to the three-dimensional spatial electric field formed by three-dimensional porous g-C3N4,CdS and In2O3.Such a three-dimensional porous structure is conducive to the efficient adsorption of pollutants,and also provides an active site for the photocatalytic reaction.Three-dimensional space and network interconnection structure are helpful to directional migration of photogenerated charges and can help prolong the life of carrier.
关键词
CdS/In2O3/g-C3N4/光催化/苯酚Key words
CdS/In2O3/g-C3N4/photocatalysis/phenol引用本文复制引用
基金项目
国家自然科学基金(21773203)
江苏省"333人才培养工程"()
江苏省"青蓝工程"资助项目(苏教师函[2024]14号)
南通市科技局市级计划项目(MS2023042)
南通职业大学重点课题(23ZK01)
出版年
2024
NETL
NSTL
万方数据