g-C3N4/CeO2/Ag三元纳米光催化剂的制备及其光催化性能研究
Preparation of g-C3 N4/CeO2/Ag Ternary Nano-Photocatalyst and Its Photocatalytic Performance
礼峥 1徐宝彤 1邱永堃 1丁茯 1孙亚光 1高雨1
作者信息
- 1. 沈阳化工大学材料科学与工程学院,辽宁沈阳 110142
- 折叠
摘要
通过简单的水热合成和光沉积方法,设计出将耦合半导体和沉积贵金属粒子两种改性方法集于一身的g-C3N4/CeO2/Ag异质结光催化剂.通过XRD、TEM、UV-Vis DRS等对目标光催化剂进行表征,并通过其在可见光下对有机污染物(以甲基橙为例)的去除效果来评价其光催化活性.结果表明:耦合10.0％CeO2和沉积2.0％Ag的g-C3N4/10.0％CeO2/2.0％Ag异质结光催化剂的催化活性分别是纯g-C3N4和CeO2的2.91倍和2.18倍.光催化活性的提高主要归因于复合材料间异质结构的形成和Ag纳米粒子的引入.
Abstract
A series of g-C3N4/CeO2/Ag heterojunction photocatalysts were designed by combining two modification methods of coupling semiconductor and depositing precious metal particles through sim-ple hydrothermal synthesis and photo deposition.The target photocatalyst was characterized by XRD,TEM and UV-Vis DRS,etc.,and through the removal of organic pollutants(methylene orange as an exam-ple)under visible light to evaluate its photocatalytic activity.The statistical results show that the catalytic activity of g-C3N4/10.0％CeO2/2.0％Ag heterojunction photocatalyst coupled with 10.0％CeO2 and 2.0％Ag is 2.91 times and 2.18 times higher than that of pure g-C3N4 and CeO2,respectively.The im-provement of photocatalytic activity is mainly attributed to the formation of heterostructures between com-posite materials and the introduction of Ag nanoparticles.
关键词
光催化/石墨相氮化碳/稀土/Ag/异质结/降解Key words
photocatalysis/graphite phase carbon nitride/rare earth elements/Ag/heterojunc-tion/degradation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据