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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。
Abstract：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-Sn3 O4 nanosheet. The results show that Sn3 O4/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 Sn3 O4/optical fiber could have a promising potential in water treatment application.
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基本信息:
DOI：10.14062/j.issn.0454-5648.20210856
中图分类号:O643.36;O644.1
引用信息:
[1]杨钟炜,刘琳,于欣,等.Sn_3O_4/光导纤维复合结构的制备及其光催化性能[J].硅酸盐学报,2022,50(02):290-297.DOI:10.14062/j.issn.0454-5648.20210856.
基金信息:
国家自然科学基金重点项目(51732007)
2022-01-20
2022-01-20
2022-01-20