Flame-Made Cu/TiO2 and Cu-Pt/TiO2 Photocatalysts for Hydrogen Production

Catalysts

Maria Vittoria Dozzi¹  Gian Luca Chiarello¹  Massimo Bernareggi¹  Elena Selli¹  Luca Giacomo Bettini²  Anna Maria Ferretti³ 

[1] Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy;Dipartimento di Fisica, Università degli Studi di Milano, via Celoria 16, 20133 Milano, Italy;ISTM-CNR Lab Nanotechnology, Via Fantoli 16/15, 20138 Milano, Italy;

关键词: photocatalysis;    flame-spray pyrolysis;    TiO2 modification;    Cu and Pt nanoparticles;    photocatalytic hydrogen production;    methanol photo-steam reforming;   

DOI  :  10.3390/catal7100301

来源: DOAJ

【 摘 要 】

The effect of Cu or Cu-Pt nanoparticles in TiO2 photocatalysts prepared by flame spray pyrolysis in one step was investigated in hydrogen production from methanol photo-steam reforming. Two series of titanium dioxide photocatalysts were prepared, containing either (i) Cu nanoparticles (0.05–0.5 wt%) or (ii) both Cu (0 to 0.5 wt%) and Pt (0.5 wt%) nanoparticles. In addition, three photocatalysts obtained either by grafting copper and/or by depositing platinum by wet methods on flame-made TiO2 were also investigated. High hydrogen production rates were attained with copper-containing photocatalysts, though their photoactivity decreased with increasing Cu loading, whereas the photocatalysts containing both Cu and Pt nanoparticles exhibit a bell-shaped photoactivity trend with increasing copper content, the highest hydrogen production rate being attained with the photocatalyst containing 0.05 wt% Cu.

【 授权许可】

Unknown