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Open AccessArticle

A Comparison Study of Functional Groups (Amine vs. Thiol) for Immobilizing AuNPs on Zeolite Surface

Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, School of Materials and Energy, Southwest University, Chongqing 400715, China
Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing 400715, China
Jiangsu Key Laboratory for Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
Centre National de la Recherche Scientifique CNRS, Sorbonne Université, Physico-chimie des Electrolytes et Nanosystèmes InterfaciauX, Phenix, F-75005 Paris, France
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(7), 1034;
Received: 2 June 2019 / Revised: 14 July 2019 / Accepted: 16 July 2019 / Published: 19 July 2019
(This article belongs to the Special Issue Plasmonic Nanostructures and Related Applications)
Immobilization of gold nanoparticles (AuNPs) on the surface of zeolite has received a great interest due to [email protected]’s unique characteristics and high performance for catalysis. In this work we studied the grafting of two different functional molecules; one having an amine group (3-aminopropyl)triethoxysilane (APTES) and the second having a thiol group (3-mercaptopropyl)trimethoxysilane (MPTES) on the surface of zeolite using the same wet chemistry method. The modified zeolite surfaces were characterized using zeta potential measurements; diffuse reflectance infrared fourier transform (DRIFT) and X-ray photoelectron spectroscopy (XPS). The results confirmed a successful deposition of both functional groups at the topmost surface of the zeolite. Furthermore; transmission electron microscopy (TEM), ultraviolet-visible (UV-Vis) spectroscopy and XPS results clearly evidenced that APTES provided a better AuNPs immobilization than MPTES as a result of; (1) less active functions obtained after MPTES deposition, and (2) the better attaching ability of thiol to the gold surface. View Full-Text
Keywords: AuNPs; zeolite; immobilization; functional group AuNPs; zeolite; immobilization; functional group
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MDPI and ACS Style

Rao, X.; Tatoulian, M.; Guyon, C.; Ognier, S.; Chu, C.; Abou Hassan, A. A Comparison Study of Functional Groups (Amine vs. Thiol) for Immobilizing AuNPs on Zeolite Surface. Nanomaterials 2019, 9, 1034.

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