Porous TiO2 Assembled from Monodispersed Nanoparticles

Xu Liu; Weijie Duan; Yan Chen; Shihui Jiao; Yue Zhao; Yutang Kang; Lu Li; Zhenxing Fang; Wei Xu; Guangsheng Pang

doi:10.1186/s11671-016-1372-2

Porous TiO2 Assembled from Monodispersed Nanoparticles

Nanoscale Res Lett. 2016 Dec;11(1):159. doi: 10.1186/s11671-016-1372-2. Epub 2016 Mar 22.

Authors

Xu Liu¹, Weijie Duan¹, Yan Chen¹, Shihui Jiao¹, Yue Zhao¹, Yutang Kang¹, Lu Li¹, Zhenxing Fang¹, Wei Xu¹, Guangsheng Pang²

Affiliations

¹ State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, Jilin, 130012, People's Republic of China.
² State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, Jilin, 130012, People's Republic of China. panggs@jlu.edu.cn.

Abstract

Porous TiO2 were assembled by evaporating or refluxing TiO2 colloid, which was obtained by dispersing the TiO2 nanoparticles with a crystallite size (d XRD) of 3.2 nm into water or ethanol without any additives. Porous transparent bulk TiO2 was obtained by evaporating the TiO2-C2H5OH colloid at room temperature for 2 weeks, while porous TiO2 nanospheres were assembled by refluxing the TiO2-H2O colloid at 80 °C for 36 h. Both of the porous TiO2 architectures were pore-size-adjustable depending on the further treating temperature. Porous TiO2 nanospheres exhibited enhanced photocatalysis activity compared to the nanoparticles.

Keywords: Assemblies; Photodegradation; Porous TiO2; TiO2 nanoparticles.