Soft, Oxidative Stripping of Alkyl Thiolate Ligands from Hydroxyapatite-Supported Gold Nanoclusters for Oxidation Reactions

被引：54

作者：

Zhang, Bin ^{[1
]}

Fang, Jun ^{[1
,2
]}

Li, Jingguo ^{[1
]}

Lau, Jun Jie ^{[1
]}

Mattia, Davide ^{[3
]}

Zhong, Ziyi ^{[4
]}

Xie, Jianping ^{[1
]}

Yan, Ning ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Chem & Biomol Engn, 4 Engn Dr, Singapore 117585, Singapore

[2] Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, 5 Xin Mofan Rd, Nanjing 210009, Jiangsu, Peoples R China

[3] Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon, England

[4] ASTAR, Inst Chem & Engn Sci, 1 Pesek Rd, Jurong Isl 627833, Singapore

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2016年 / 11卷 / 04期

关键词：

gold; nanoclusters; oxidation; S ligands; synthetic methods; AEROBIC ALCOHOL OXIDATION; SELECTIVE OXIDATION; BENZYL ALCOHOL; PARTICLE-SIZE; AU-25; NANOCLUSTERS; CATALYTIC-ACTIVITY; AU; CLUSTERS; NANOPARTICLES; HYDROGENATION;

D O I：

10.1002/asia.201501074

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A strategy for the mild deprotection of alkyl-thiolated (6-mercaptohexanoic acid, MHA, and 3-mercaptopropanoic acid, MPA) gold nanoclusters (AuNCs) supported on hydroxyapatite (HAP) has been developed by employing a peroxide (tert-butyl hydroperoxide, TBHP, or hydrogen peroxide, H2O2) as an oxidant. The thiol ligands on the supported AuNCs were removed after oxidation, and the size and integrity of the supported clusters were well-preserved. The bare gold clusters on HAP after removal of the ligands were catalytically effective for the epoxidation of styrene and the aerobic oxidation of benzyl alcohol. These two reactions were also investigated on calcined AuNCs that were supported on HAP for comparison, and the resulting AuNCs that were prepared by using this new strategy showed superior catalytic activity.

引用

页码：532 / 539

页数：8

共 7 条

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[4] Doping Effects in the Thiolate-Protected Gold Nanoclusters from the Perspective of Balance Between Ligands and the Core
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[6] Thiolate Ligands as a Double-Edged Sword for CO Oxidation on CeO2 Supported Au25(SCH2CH2Ph)18 Nanoclusters
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[7] Gold nanoclusters prepared from an eighteenth century two-phases procedure supported on thiol-containing SBA-15 for liquid phase oxidation of cyclohexene with molecular oxygen
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