Direct Amorphous-structure Analysis: How are Surface/Bulk Structure and Activity of Titania Photocatalyst Particles Changed by Milling?

被引：16

作者：

Chen, Guangyi ^{[1
]}

Takashima, Mai ^{[1
,2
]}

Ohtani, Bunsho ^{[1
,2
]}

机构：

[1] Hokkaido Univ, Grad Sch Environm Sci, Sapporo, Hokkaido 0600810, Japan

[2] Hokkaido Univ, Inst Catalysis, Sapporo, Hokkaido 0010021, Japan

来源：

CHEMISTRY LETTERS | 2021年 / 50卷 / 04期

关键词：

Rutile titania; Braying-calcination treatment; Surface amorphization;

D O I：

10.1246/cl.200825

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Changes in surface and bulk structures of rutile titania particles induced by braying up to 10 d and post calcination in air at 773 K were analyzed by reversed double-beam photoacoustic spectroscopy. The observed energy-resolved distribution of electron traps indicated that the surface was amorphized by braying to give rutile-core amorphous-shell structure and the amorphous layer was partly recrystallized by post-calcination leaving grain boundaries in the surface layers, both of which may cause the observed markedly decreased photocatalytic activities.

引用

页码：644 / 648

页数：5

共 36 条

[1] EXPERIMENTAL METHODS FOR GRINDING STUDIES IN LABORATORY MILLS [J].

AUSTIN, LG ;

BHATIA, VK .

POWDER TECHNOLOGY, 1972, 5 (05) :261-&

[2] 'All-inclusive' imaging of the rutile TiO2(110) surface using NC-AFM [J].

Bechstein, Ralf ;

Gonzalez, Cesar ;

Schuette, Jens ;

Jelinek, Pavel ;

Perez, Ruben ;

Kuehnle, Angelika .

NANOTECHNOLOGY, 2009, 20 (50)

[3]

Chen G., CATALYSTS

[4] Energy-resolved distribution of electron traps for O/S-doped carbon nitrides by reversed double-beam photoacoustic spectroscopy and the photocatalytic reduction of Cr(vi) [J].

Chuaicham, Chitiphon ;

Karthikeyan, Sekar ;

Pawar, Radheshyam R. ;

Xiong, Yihuang ;

Dabo, Ismaila ;

Ohtani, Bunsho ;

Kim, Yoonyoung ;

Song, Jun Tae ;

Ishihara, Tatsumi ;

Sasaki, Keiko .

CHEMICAL COMMUNICATIONS, 2020, 56 (26) :3793-3796

[5] Growth of micro flower rutile TiO2 films by chemical bath deposition technique: Study on the properties of structural, surface morphological, vibrational, optical and compositional [J].

Dhandayuthapani, T. ;

Sivakumar, R. ;

Ilangovan, R. .

SURFACES AND INTERFACES, 2016, 4 :59-68

[6] Combined AFM, SEM and crystal plasticity analysis of grain boundary sliding in titanium at room temperature [J].

Doquet, V. ;

Barkia, B. .

MECHANICS OF MATERIALS, 2016, 103 :18-27

[7] Combined NC-AFM and DFT study of the adsorption geometry of trimesic acid on rutile TiO2(110) [J].

Greuling, Andreas ;

Rahe, Philipp ;

Kaczmarski, Marcin ;

Kuehnle, Angelika ;

Rohlfing, Michael .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2010, 22 (34)

[8] Quantitative analysis of defective sites in titanium(IV) oxide photocatalyst powders [J].

Ikeda, S ;

Sugiyama, N ;

Murakami, S ;

Kominami, H ;

Kera, Y ;

Noguchi, H ;

Uosaki, K ;

Torimoto, T ;

Ohtani, B .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (04) :778-783

[9] XPS and FTIR investigation of the surface properties of different prepared titania nano-powders [J].

Jensen, H ;

Soloviev, A ;

Li, ZS ;

Sogaard, EG .

APPLIED SURFACE SCIENCE, 2005, 246 (1-3) :239-249

[10]

Joshi M.B., 2008, Indian J Fibre Text Res, V33

← 1 2 3 4 →