γ-辐照法合成的Ag/TiO2在可见光下降解甲基红

2016 3rd International Conference on Green Technology and Sustainable Development (GTSD) Pub Date : 2016-11-01 DOI:10.1109/GTSD.2016.66

Vo Thi Thu Nhu, N. Q. Hien

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引用次数: 1

摘要

采用γ辐照法制备了金属银纳米粒子掺杂的商用TiO2 (P25)。透射电镜(TEM)测定银纳米颗粒(AgNPs)的尺寸为1 ~ 2 nm。在可见光下对偶氮染料meyl Red (MR)在TiO2和Ag/TiO2水悬浮液中的光催化降解性能进行了研究。结果表明，Ag/TiO2对甲基红的光降解效率(72%)高于商用P25-TiO2(23%)。因此，在可见光下，γ-辐照法制备了具有高光催化活性的掺杂银纳米粒子的TiO2光催化剂。

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Photodegradation of Methyl Red under Visible Light Using Ag/TiO2 Synthesized by γ- Irradiation Method

Commercial TiO₂ (P25) doped with metallic silver nanoparticles was prepared by γ-irradiation method. The size of silver nanoparticles (AgNPs) was determined by transmission electron microscopy (TEM) to be of 1-2 nm. The photo-catalytic degradation of azo dye Metyl Red (MR) in the aqueous suspensions of TiO₂ and Ag/TiO₂ under visible light was carried out to evaluate the photo-catalytic activity. Results showed that Ag/TiO₂ was found to enhance higher photo-degradation efficiency of Metyl Red (72%) than those of commercial P25-TiO₂ (23%). Thus, γ-irradiation method can be suitably applied to prepare photo-catalyst of TiO₂ doped with siver nanoparticles with highly photo-catalytic activity under visible light.

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2016 3rd International Conference on Green Technology and Sustainable Development (GTSD)

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