The non-innocent role of graphene in the formation/immobilization of ultra-small gold nanoparticles functionalized with N-heterocyclic carbene ligands

被引：19
|
作者：
Ventura-Espinosa, David [1 ]
Martin, Santiago [2 ,3 ]
Mata, Jose A. [1 ]
机构：
[1] Univ Jaume 1, Inst Adv Mat INAM, Ctr Innovac Quim Avanzada ORFEO CINCA, Avda Sos Baynat S-N, Castellon de La Plana 12006, Spain
[2] Univ Zaragoza, Fac Ciencias, Dept Quim Fis, C Pedro Cerbuna 12, E-50009 Zaragoza, Spain
[3] Univ Zaragoza, CSIC, ICMA, C Pedro Cerbuna 12, E-50009 Zaragoza, Spain
来源：
JOURNAL OF CATALYSIS | 2019年 / 375卷
关键词：
Gold nanoparticles; Supported catalysis; Graphene; Hybrid materials; Alkyne hydration; HETEROGENEOUS CATALYSIS; FACILE SYNTHESIS; COMPLEXES; SURFACE; STABILITY; HYDRATION; ALKYNES; STABILIZATION; HYDROGENATION; VERSATILE;
D O I：
10.1016/j.jcat.2019.06.009
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：
Ultra-small gold nanoparticles (AuNPs) are obtained by treatment of well-defined gold complexes with reduced graphene oxide (rGO) without any auxiliary reducing agent. The AuNPs are functionalized with N-heterocyclic carbene (NHC) ligands, which allow controlling both the size and morphology, avoiding aggregation. The AuNPs are directly immobilized on the surface of graphene yielding hybrid materials composed of metal nanoparticles and a carbonaceous support. The catalytic properties of these AuNPs immobilized onto graphene have been tested in the hydration of alkynes. The AuNPs showed superior catalytic activity vs. the parent molecular gold complexes and were recycled up to ten times. We have observed that graphene plays an important role in the stabilization of AuNPs functionalized with NHC ligands. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码：419 / 426
页数：8
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