Synthesis, structure and photocatalytic activity of nano TiO2 and nano Ti1-𝑥M𝑥O2-𝛿 (M = Cu, Fe, Pt, Pd, V, W, Ce, Zr)

Pramana

K Nagaveni¹  Sounak Roy¹  M S Hegde1¹ 

[1] Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India$$

关键词: Titania;    nanomaterial;    photocatalysis;    three-way catalysis.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We have synthesized 5-7 nm size, highly crystalline TiO2 which absorbs radiation in the visible region of solar spectrum. The material shows higher photocatalytic activity both in UV and visible region of the solar radiation compared to commercial Degussa P25 TiO2. Transition metal ion substitution for Ti4+ creates mid-gap states which act as recombination centers for electron{hole induced by photons thus reducing photocatalytic activity. However, Pt, Pd and Cu ion substituted TiO2 are excellent CO oxidation and NO reduction catalysts at temperatures less than 100°C.

【 授权许可】

Unknown