摘要
传统光催化是光照射半导体催化剂时经表面光电耦合产生的载流子对有机污染物降解。这种外通光光催化模式使得光的利用率低、催化剂易失效、回收利用困难、难以实现连续水处理,制约了其在环保中的应用。本研究提出利用光的波导传输与界面耦合原理,通过在非晶光导纤维表面组装四氧化三锡纳米片,实现光的收集、传输及向纳米晶中注入,和内通光模式的光催化,从根本上解决上述问题。实验证明了四氧化三锡/光导纤维具有增强的光催化性能。这一研究首次提出光催化为目的非相干光波导传输和内通光光催化,拓宽了光波导理论并提出新的光催化反应机制,具有重要理论价值和巨大的工业应用前景。
The mechanism of conventional photocatalysis is based on photodegradation effect of photo-induced carrier when the surface of photocatalyst nanoparticles is irradiated by light.For this photocatalysis technique with outside-light-supply mode,a light utilization efficiency is rather low,the catalyst is often out-of-work,and recycle cast is high,which restrict its practical application in environmental protection.To solve the problems above,a photocatalytic system was prepared via the construction of a non-crystal fiber-Sn_(3)O_(4)nanosheet.The results show that Sn_(3)O_(4)/optical fiber in the photocslayst can enhance the photocatalytic performance.In addition,the wave guide of incoherent light targeted to photocatalysis and the inner-light-supply photocatalysis were also proposed for the development of optical wave guide theory,and this photocatalyst with Sn_(3)O_(4)/optical fiber could have a promising potential in water treatment application.
作者
杨钟炜
刘琳
于欣
刘宏
YANG Zhongwei;LIU Lin;YU Xin;LIU Hong(Institute for Advanced Interdisciplinary Research,University of Jinan,Jinan 250022,China;State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,China)
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2022年第2期290-297,共8页
Journal of The Chinese Ceramic Society
基金
国家自然科学基金重点项目(51732007)。
关键词
光催化
四氧化三锡
光导纤维
降解
通光模式
photocatalysis
tin oxide
optical fiber
photodegradation
light pass mode
