In situ synthesis and photocatalytic hydrogen production of plate‐like Cu‐doped TiO2 polycrystal with crystal‐axis orientation. (1st August 2020)

• Record Type: Journal Article
• Authors: Lei, Ji; Wang, Xing; Zhou, Jinhong; Kong, Xingang
• Is Part Of: Micro & nano letters. Volume 15:Number 9(2020)
• Page Start: 624
• Page End: 626
• Publication Date: 2020-08-01
• Subjects: copper -- hydrogen production -- nanofabrication -- titanium compounds -- nanoparticles -- visible spectra -- photocatalysis -- wide band gap semiconductors -- semiconductor growth -- heat treatment; HTO plate‐like particles -- crystal‐axis orientation -- [111]‐crystal‐axis direction -- Cu‐doped TiO2 plate‐like particle -- in situ synthesis -- visible photocatalytic hydrogen production activity -- plate‐like Cu‐doped TiO2 polycrystal -- layered plate‐like particle -- nanocrystals -- copper acetate solution -- heat‐treatment -- acid washing -- visible light region -- wavelength 400.0 nm to 800.0 nm -- TiO2:Cu; Nanotechnology -- Periodicals; Nanostructures -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1049/mnl.2019.0503
• Languages: English
• ISSNs: 1750-0443

Abstract

Abstract : The Cu‐doped TiO2 plate‐like particle was synthesised via using the layered H1.07 Ti1.73 O4 ·H2 O (HTO) plate‐like particle as a precursor. The Cu‐doped TiO2 particle consists of nanocrystals and holes, and these nanocrystals are oriented at [ 1 ¯ 1 ¯ 1 ]‐crystal‐axis direction. Firstly, the HTO particle was treated in a copper acetate solution, forming Cu 2+ ‐exchanged HTO plate‐like particles. And then Cu 2+ ‐exchanged HTO in situ transformed into Cu‐doped TiO2 via heat‐treating and further acid washing. The Cu‐doped TiO2 particle has a stronger absorption in the visible light region of 400–800 nm and the visible photocatalytic H2 production activity.