Environmentally effective photocatalyst CoO-TiO2 synthesized by thermal precipitation of Co in amorphous TiO2

被引：62

作者：

Savio, A. K. P. D. ^{[1
]}

Fletcher, J. ^{[1
]}

Smith, K. ^{[2
]}

Iyer, R. ^{[2
]}

Bao, J. M. ^{[3
]}

Hernandez, F. C. Robles ^{[1
]}

机构：

[1] Univ Houston, Dept Mech Engn Technol, Coll Technol, Houston, TX 77204 USA

[2] Univ Houston, Ctr Life Sci Technol, Houston, TX 77204 USA

[3] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2016年 / 182卷

关键词：

Photocatalysis; Paraoxon; Degradation; Spectroscopy; TiO2; P-NITROPHENOL; METHYL PARATHION; WATER-TREATMENT; RAMAN-SPECTRA; DEGRADATION; ANATASE; KINETICS; PARAOXON; RUTILE; BIODEGRADATION;

D O I：

10.1016/j.apcatb.2015.09.047

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the enhanced photocatalytic activity of TiO2 by the surface decoration of CoO nanoparticles to degrade paraoxon. The CoO nanoparticles are precipitated in situ during heat treatments of Co doped amorphous TiO2 and enhance the degradation by 11-24 times that of pure TiO2 or Rh2O3-TiO2 or the oxide nanoparticles under white light (natural sunlight and fluorescence light). The enhanced activity is a combined result of visible light absorption by CoO and effective electron-hole separation at the CoO-TiO2 interfaces. Published by Elsevier B.V.

引用

页码：449 / 455

页数：7

共 46 条

[1] Preparation, Characterization of Sulfur-Doped Nanosized TiO2 and Photocatalytic Degradation of Methylene Blue Under Visible Light [J].

Ang, Thiam Peng ;

Law, Jia Yan ;

Han, Yi-Fan .

CATALYSIS LETTERS, 2010, 139 (1-2) :77-84

[2] RAMAN-SPECTRA OF TITANIUM-DIOXIDE [J].

BALACHANDRAN, U ;

EROR, NG .

JOURNAL OF SOLID STATE CHEMISTRY, 1982, 42 (03) :276-282

[3] Photodegradation kinetics of 4-nitrophenol in TiO2 suspension [J].

Chen, DW ;

Ray, AK .

WATER RESEARCH, 1998, 32 (11) :3223-3234

[4] Photocatalytic degradation of commercial methyl parathion in aqueous suspension containing La-doped TiO2 nanoparticles [J].

Chen, Hao ;

Shen, Min ;

Chen, Ruiwen ;

Dai, Ke ;

Peng, Tianyou .

ENVIRONMENTAL TECHNOLOGY, 2011, 32 (13) :1515-1522

[5] THE STRUCTURES OF ANATASE AND RUTILE [J].

CROMER, DT ;

HERRINGTON, K .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1955, 77 (18) :4708-4709

[6]

Cullity B. D., 1978, ELEMENTS XRAY DIFFRA

[7] The surface science of titanium dioxide [J].

Diebold, U .

SURFACE SCIENCE REPORTS, 2003, 48 (5-8) :53-229

[8] Assessment of the toxicity of methyl parathion and its photodegradation products in water samples using conductometric enzyme biosensors [J].

Dzyadevych, SV ;

Soldatkin, AP ;

Chovelon, JM .

ANALYTICA CHIMICA ACTA, 2002, 459 (01) :33-41

[9] Raman spectra of titanium dioxide (anatase, rutile) with identified oxygen isotopes (16,17,18) [J].

Frank, Otakar ;

Zukalova, Marketa ;

Laskova, Barbora ;

Kuerti, Jenoe ;

Koltai, Janos ;

Kavan, Ladislav .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (42) :14567-14572

[10] Sonochemical synthesis of nanostructured anatase and study of the kinetics among phase transformation and coarsening as a function of heat treatment conditions [J].

Gonzalez-Reyes, Leonardo ;

Hernandez-Perez, I. ;

Hernandez, Francisco C. Robles ;

Rosales, Hector Dorantes ;

Arce-Estrada, Elsa M. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2008, 28 (08) :1585-1594

← 1 2 3 4 5 →