Catalytic performance of gold nanoparticles using different crystallinity HAP as carrier materials

被引：24

作者：

Wang, Jian-Dong ^{[1
]}

Liu, Jin-Ku ^{[1
]}

Lu, Yi ^{[1
]}

Hong, Dan-Jing ^{[1
]}

Yang, Xiao-Hong ^{[2
]}

机构：

[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China

[2] Chizhou Univ, Dept Chem, Chizhou 247000, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2014年 / 55卷

基金：

中国国家自然科学基金;

关键词：

Nanostructures; Inorganic compounds; Metals; Crystal structure; Catalytic properties; LOW-TEMPERATURE OXIDATION; CO OXIDATION; HYDROXYAPATITE; MECHANISM; METHANE; TIO2;

D O I：

10.1016/j.materresbull.2014.04.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gold (Au) was loaded on hydroxyapatite (HAP) supports with three different degree of crystallinity by deposition-precipitation method. Amorphous HAP and higher crystalline HAP nanoparticles were synthesized respectively by a direct precipitation process of which the aging time was 12 h or hydrothermal treatment at 180 degrees C. CO oxidation reaction was used to evaluate the behavior of catalysts. The physical properties of the catalysts were characterized by BET and TEM. The result found the catalyst with the lowest specific surface area had the highest initial activity. Patterns of XRD and XPS revealed that the HAP supports with higher crystallinity could produce more Au degrees over their surface which resulted in higher initial activity. This study suggested that the crystallinity of HAP supporter was another main factor to improve catalytic activity despite of specific surface area of the Au/HAP nanocatalysts. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：190 / U266

页数：8

共 43 条

[1] Promotion by sulfur of gold catalysts for crotyl alcohol formation from crotonaldehyde hydrogenation [J].

Bailie, JE ;

Hutchings, GJ .

CHEMICAL COMMUNICATIONS, 1999, (21) :2151-2152

[2] Gold-catalysed oxidation of carbon monoxide [J].

Bond, GC ;

Thompson, DT .

GOLD BULLETIN, 2000, 33 (02) :41-51

[3] Catalysis by gold [J].

Bond, GC ;

Thompson, DT .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 1999, 41 (3-4) :319-388

[4] Influence of dihydrogen and water vapor on the kinetics of CO oxidation over Au/Al2O3 [J].

Calla, JT ;

Davis, RJ .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2005, 44 (14) :5403-5410

[5] Nature of the active site for CO oxidation on highly active Au/γ-Al2O3 [J].

Costello, CK ;

Kung, MC ;

Oh, HS ;

Wang, Y ;

Kung, HH .

APPLIED CATALYSIS A-GENERAL, 2002, 232 (1-2) :159-168

[6] Gold/hydroxyapatite catalysts Synthesis, characterization and catalytic activity to CO oxidation [J].

Dominguez, M. I. ;

Romero-Sarria, F. ;

Centeno, M. A. ;

Odriozola, J. A. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 87 (3-4) :245-251

[7] 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

[8] Preparation of Au/TiO2 catalysts by suspension spray reaction method and their catalytic property for CO oxidation [J].

Fan, L ;

Ichikuni, N ;

Shimazu, S ;

Uematsu, T .

APPLIED CATALYSIS A-GENERAL, 2003, 246 (01) :87-95

[9] Effects of different types of γ-Al2O3 on the activity of gold nanoparticles for CO oxidation at low-temperatures [J].

Han, Yi-Fan ;

Zhong, Ziyi ;

Ramesh, Kanaparthi ;

Chen, Fengxi ;

Chen, Luwei .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (07) :3163-3170

[10] Uptake of Sr2+ and Co2+ into Biogenic Hydroxyapatite: Implications for Biomineral Ion Exchange Synthesis [J].

Handley-Sidhu, S. ;

Renshaw, J. C. ;

Moriyama, S. ;

Stolpe, B. ;

Mennan, C. ;

Bagheriasl, S. ;

Yong, P. ;

Stamboulis, A. ;

Paterson-Beedle, M. ;

Sasaki, K. ;

Pattrick, R. A. D. ;

Lead, J. R. ;

Macaskie, L. E. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2011, 45 (16) :6985-6990

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