Facile formation of Anatase Nanoparticles on H-Titanate Nanotubes at Low Temperature for Efficient Visible Light-Driven Degradation of Organic Pollutants

Catalysts

Lun Zhao¹  Weiwei Fu¹  Helong Bai¹  Zhiqiang Shi²  Zhiming Lu²  Feifei Lei²  Jinyu Dai²  Deguang Zhang²  Zongtao Zhang² 

[1]College of Chemistry, Changchun Normal University, Changchun 130032, China

[2]State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130012, China

关键词: in-situ formation;    anatase nanoparticles;    H-titanate nanotubes;    dual-phase;    low temperature;   

DOI  :  10.3390/catal10060695

来源: DOAJ

【 摘 要 】

Anatase nanoparticles (5–10 nm) generated on H-titanate nanotube surface (H-titanate/anatase) were prepared by an ingenious and simple method. H-titanate tubes were prepared by a hydrothermal reaction of Ti powder in concentrated NaOH solution and an ion exchange process with HNO₃ solution. After that, at a relatively low drying temperature (100 °C), a small quantity of anatase nanoparticles were in-situ formed on the H-titanate tubes surface by a surface dehydration reaction. In-situ transformation can form a strong interface coupling between H-titanate and anatase, which is conducive to accelerating charge transfer and improving its photocatalytic activity. In addition, the smaller average crystal size, the large specific surface areas (BET), the nanotubed and layered structure and the synergistic effect of dual phases would be beneficial to improving the photocatalytic efficiency.

【 授权许可】

Unknown