Synthesis, characterization, redox and photocatalytic properties of Ce1-xPdxVO4 (0 ≤ x ≤ 0.1)

被引：31

作者：

Bellakki, Manjunath B. ^{[2
]}

Baidya, Tinku ^{[2
]}

Shivakumara, C. ^{[2
]}

Vasanthacharya, N. Y. ^{[2
]}

Hegde, M. S. ^{[2
]}

Madras, Giridhar ^{[1
]}

机构：

[1] Indian Inst Sci, Dept Chem Engn, Bangalore 560012, Karnataka, India

[2] Indian Inst Sci, Solid State & Struct Chem Unit, Bangalore 560012, Karnataka, India

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2008年 / 84卷 / 3-4期

关键词：

Combustion synthesis; Ce0.98Pd0.02VO4; H-2/TPR; NO reduction; CO oxidation; Photocatalysis;

D O I：

10.1016/j.apcatb.2008.05.001

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：

Zircon-type CeVO4 and Ce1-xPdxVO4 (0.02 <= x <= 0.1) were synthesized by a single step solution combustion method. The materials were characterized by powder X-ray diffraction, magnetic measurement and temperature-programmed reduction (TPR) with H-2. The redox properties of CeVO4 and Ce0.98Pd0.02VO4 have been investigated by temperature-programmed reduction. The gas-phase and liquid-phase catalytic properties of CeVO4 and Ce0.98Pd0.02VO4 were investigated. Ce0.98Pd0.02VO4 shows better catalytic activity than CeVO4 towards CO oxidation by O-2, NO reduction by CO and the photocatalytic degradation of various dyes. This higher catalytic activity of Ce0.98Pd0.02VO4 can be attributed to the lattice labile oxygen and high surface area compared to that of CeVO4. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：474 / 481

页数：8

共 46 条

[1] Modification of the photocatalytic activity of Pd/TiO2 and Zn/TiO2 systems through different oxidative and reductive calcination treatments [J].

Aramendia, M. A. ;

Borau, V. ;

Colmenares, J. C. ;

Marinas, A. ;

Marinas, J. M. ;

Navio, J. A. ;

Urbano, F. J. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 80 (1-2) :88-97

[2] CO oxidation on Pd/CeO2-ZrO2 catalysts [J].

Bekyarova, E ;

Fornasiero, P ;

Kaspar, J ;

Graziani, M .

CATALYSIS TODAY, 1998, 45 (1-4) :179-183

[3]

BRIGGS D, 1984, PRACTICAL SURFACE AN

[4] STEADY-STATE OXIDATION OF CARBON-MONOXIDE OVER SUPPORTED NOBLE-METALS WITH PARTICULAR REFERENCE TO PLATINUM [J].

CANT, NW ;

HICKS, PC ;

LENNON, BS .

JOURNAL OF CATALYSIS, 1978, 54 (03) :372-383

[5] CRYSTAL-STRUCTURE REFINEMENTS OF ZIRCON-TYPE MVO4 (M=SC, Y, CE, PR, ND, TB, HO, ER, TM, YB, LU) [J].

CHAKOUMAKOS, BC ;

ABRAHAM, MM ;

BOATNER, LA .

JOURNAL OF SOLID STATE CHEMISTRY, 1994, 109 (01) :197-202

[6] Synthesis, characterization and photocatalytic activity of different metal-doped titania systems [J].

Colmenares, J. C. ;

Aramendia, M. A. ;

Marinas, A. ;

Marinas, J. M. ;

Urbano, F. J. .

APPLIED CATALYSIS A-GENERAL, 2006, 306 (120-127) :120-127

[7] Pd/Ce0.6Zr0.4O2/Al2O3 as advanced materials for three-way catalysts -: Part 1.: Catalyst characterisation, thermal stability and catalytic activity in the reduction of NO by CO [J].

Di Monte, R ;

Fornasiero, P ;

Kaspar, J ;

Rumori, P ;

Gubitosa, G ;

Graziani, M .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2000, 24 (3-4) :157-167

[8] NO reduction with CO on alumina-modified silica-supported palladium and molybdenum-palladium catalysts [J].

Diaz Consul, Julia Maria ;

Costilla, Ignacio ;

Gigola, Carlos Eugenio ;

Baibich, Ione Maluf .

APPLIED CATALYSIS A-GENERAL, 2008, 339 (02) :151-158

[9] Origin of enhanced reducibility/oxygen storage capacity of Ce1-xTixO2 compared to CeO2 or TiO2 [J].

Dutta, Gargi ;

Waghmare, Umesh V. ;

Baidya, Tinku ;

Hegde, M. S. ;

Priolkar, K. R. ;

Sarode, P. R. .

CHEMISTRY OF MATERIALS, 2006, 18 (14) :3249-3256

[10] Abatement of CO from relatively simple and complex mixtures -: III.: Oxidation on Pd-CeO2/C and CeO2/C catalysts [J].

Dyakonov, Alexander J. ;

Little, Christine A. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 67 (1-2) :52-59

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