摘要
以硝酸铋、硅酸钠和尿素等为原料,采用水热合成法并辅助高温烧结手段制备了复合光催化材料g-C3N4/Bi2SiO5,用X-射线衍射光谱和固体紫外-可见漫反射光谱等手段进行了表征。实验结果表明,复合催化剂对罗丹明B的光催化降解活性明显高于单一的g-C3N4或Bi2SiO5活性,90 min光催化率达到~100%,并且具有良好的稳定性和重复使用性。该实验项目涵盖半导体的合成、掺杂复合技术、光降解技术和现代仪器分析技术等诸多知识点和实验技术,用于应用化学、材料化学和材料科学与工程等专业的综合实验教学,可以增强学生的创新意识和实验技能。
A composite photocatalytic material g-C3 N4/Bi2 SiO5 is prepared by using bismuth nitrate,sodium silicate and urea as starting materials by hydrothermal synthesis method and high temperature sintering method,and is characterized by X-ray powder diffraction and solid UV-visible diffused reflectance spectra.The results of catalytic experiments show that the photocatalytic degradation activity of Rhodamine B by the composite catalyst is significantly higher than that of g-C3 N4 and Bi2 SiO5,and the photocatalytic rate at 90 min reached^100%as well as with good stability and reusability.The experiment project covers many knowledge points and experimental technology technologies such as synthesis of semiconductor,doped composite,photocatalytic degradation and modern instrumental analyses,and have has the characteristics of comprehensiveness and operability,which is used in the comprehensive experiment teaching of applied chemistry,material chemistry,material science and engineering to enhance students’innovative consciousness and experimental skills.
作者
牛志成
陈克来
杨乐敏
周家容
NIU Zhicheng;CHEN Kelai;YANG Lemin;ZHOU Jiarong(Biochemical Engineering and Pharmaceutical Experimental Teaching Demonstration Center,College of Materials and Energy,South China Agricultural University,Guangzhou 510642,China)
出处
《实验室研究与探索》
CAS
北大核心
2020年第10期56-59,共4页
Research and Exploration In Laboratory
基金
广东省本科高校教学质量与教学改革工程建设项目(粤教高函[2017]214号)
广东省学位与研究生教育改革研究项目(2018JGXM17)。
关键词
复合材料
掺杂复合技术
光催化降解
综合实验
composite material
doped composite technology
photo catalytic degradation
comprehensive experiment
作者简介
牛志成(1993-),男,河南唐河人,硕士生,主要从事无机功能材料研究。E-mail:xrzscheng@163.com;通信作者:周家容(1965-),女,四川筠连人,硕士,教授,主要从事无机功能材料的研究和无机及分析化学的教学。E-mail:scauchem534@126.com。
