Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 532-539 |
| Number of pages | 8 |
| Journal | Chemistry - An Asian Journal |
| Volume | 11 |
| Issue number | 4 |
| Early online date | 2 Dec 2015 |
| DOIs | |
| Publication status | Published - 18 Feb 2016 |
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Keywords
- gold
- nanoclusters
- oxidation
- S ligands
- synthetic methods
Cite this
Soft, oxidative stripping of alkyl thiolate ligands from hydroxyapatite-supported gold nanoclusters for oxidation reactions. / Zhang, Bin; Fang, Jun; Li, Jingguo; Lau, Jun Jie; Mattia, Davide; Zhong, Ziyi; Xie, Jianping; Yan, Ning.
In: Chemistry - An Asian Journal, Vol. 11, No. 4, 18.02.2016, p. 532-539.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Soft, oxidative stripping of alkyl thiolate ligands from hydroxyapatite-supported gold nanoclusters for oxidation reactions
AU - Zhang, Bin
AU - Fang, Jun
AU - Li, Jingguo
AU - Lau, Jun Jie
AU - Mattia, Davide
AU - Zhong, Ziyi
AU - Xie, Jianping
AU - Yan, Ning
PY - 2016/2/18
Y1 - 2016/2/18
N2 - 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.
AB - 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.
KW - gold
KW - nanoclusters
KW - oxidation
KW - S ligands
KW - synthetic methods
UR - http://www.scopus.com/inward/record.url?scp=84959576782&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1002/asia.201501074
U2 - 10.1002/asia.201501074
DO - 10.1002/asia.201501074
M3 - Article
VL - 11
SP - 532
EP - 539
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
SN - 1861-4728
IS - 4
ER -