Pt nanoparticles on titania nanotubes prepared by vapor-phase impregnation-decomposition method

被引：15

作者：

Encarnacion Gomez, C. ^{[1
]}

Vargas Garcia, J. R. ^{[1
]}

Toledo Antonio, J. A. ^{[2
]}

Cortes Jacome, M. A. ^{[2
]}

Angeles Chavez, C. ^{[2
]}

机构：

[1] Natl Polytech Inst, Dept Met Eng, Mexico City 07300, DF, Mexico

[2] Petr Mexican Inst, Mexico City 07730, DF, Mexico

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 495卷 / 02期

关键词：

Titania; Nanotubes; Platinum nanoparticles; PHOTOCATALYTIC ACTIVITIES; OXIDATION; CATALYSTS; GROWTH; ADSORPTION; DEPOSITION; RAMAN;

D O I：

10.1016/j.jallcom.2009.10.232

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：

Platinum (Pt) nanoparticles were prepared on mania nanotubes (TNTs) by vapor-phase impregnation-decomposition method using platinum acetylacetonate as precursor. TNTs and Pt precursor were mixed in 3 1 weight ratio before vapor-phase impregnation The mixed powders were heated at 453K for 10 min to evaporate the precursor in a horizontal tube quartz reactor at a total pressure of 66.6 kPa Then, the impregnated TNTs were moved to a higher temperature zone (673K) inside the tube reactor to achieve the precursor decomposition HAADF-STEM observations, AAS and XPS results revealed that this method allows the formation of uniformly distributed Pt nanoparticles on the surface of TNTs with a narrow distribution of particle size (2 1 nm mean size). Pt nanoparticles remain mainly as Pt(0) oxidation state with a Pt(0)/Pt(2+) atomic ratio of 3 9. (C) 2009 Elsevier B V All rights reserved

引用

页码：458 / 461

页数：4

共 26 条

[1] Electrochemical lithium storage of titania nanotubes modified with NiO nanoparticles [J].

An, L. P. ;

Gao, X. P. ;

Li, G. R. ;

Yan, T. Y. ;

Zhu, H. Y. ;

Shen, P. W. .

ELECTROCHIMICA ACTA, 2008, 53 (13) :4573-4579

[2] GROWTH AND RAMAN-SPECTROSCOPIC CHARACTERIZATION OF TIO2 ANATASE SINGLE-CRYSTALS [J].

BERGER, H ;

TANG, H ;

LEVY, F .

JOURNAL OF CRYSTAL GROWTH, 1993, 130 (1-2) :108-112

[3] Preparation and characterization of nanosized Pt/Au particles on TiO2-nanotubes [J].

Chien, SH ;

Liou, YC ;

Kuo, MC .

SYNTHETIC METALS, 2005, 152 (1-3) :333-336

[4] WOx/TiO2 catalysts via titania nanotubes for the oxidation of dibenzothiophene [J].

Cortes-Jacome, M. A. ;

Chavez, C. Angeles ;

Ramirez-Verduzco, L. F. ;

Lopez-Salinas, E. ;

Toledo-Antonio, J. A. .

CHEMISTRY OF MATERIALS, 2007, 19 (26) :6605-6614

[5] PHOTOEMISSION FROM MASS-SELECTED MONODISPERSED PT CLUSTERS [J].

EBERHARDT, W ;

FAYET, P ;

COX, DM ;

FU, Z ;

KALDOR, A ;

SHERWOOD, R ;

SONDERICKER, D .

PHYSICAL REVIEW LETTERS, 1990, 64 (07) :780-784

[6] Titania nanotubes supported platinum catalyst in CO oxidation process [J].

Grigorieva, Anastasia V. ;

Goodilin, Eugene A. ;

Derlyukova, Lyudmila E. ;

Anufrieva, Tatyana A. ;

Tarasov, Alexey B. ;

Dobrovolskii, Yuri A. ;

Tretyakov, Yuri D. .

APPLIED CATALYSIS A-GENERAL, 2009, 362 (1-2) :20-25

[7]

Hierso JC, 1998, APPL ORGANOMET CHEM, V12, P161, DOI 10.1002/(SICI)1099-0739(199803)12:3<161::AID-AOC689>3.0.CO

[8]

2-6

[9] Investigation of multielemental catalysts based on decreasing the band gap of titania for enhanced visible light photocatalysis [J].

Im, Ji Sun ;

Yun, Seok-Min ;

Lee, Young-Seak .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2009, 336 (01) :183-188

[10] ATOMIC LAYER EPITAXY (ALE) ON POROUS SUBSTRATES [J].

LAKOMAA, EL .

APPLIED SURFACE SCIENCE, 1994, 75 (1-4) :185-196

← 1 2 3 →