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Type: Journal article
Title: Coupling Natural Halloysite Nanotubes and Bimetallic Pt-Au Alloy Nanoparticles for Highly Efficient and Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid
Author: Zhong, X.
Yuan, P.
Wei, Y.
Liu, D.
Losic, D.
Li, M.
Citation: ACS Applied Materials and Interfaces, 2022; 14(3):3949-3960
Publisher: American Chemical Society
Issue Date: 2022
ISSN: 1944-8244
Statement of
Xuemin Zhong, Peng Yuan, Yanfu Wei, Dong Liu, Dusan Losic, and Mengyuan Li
Abstract: The aerobic oxidation of 5-hydroxymethylfurfural (HMF), a key platform compound derived from biomass, to 2,5-furandicarboxylic acid (FDCA) is a highly important reaction in the production of green and sustainable chemicals. Here, we developed a highly efficient and stable halloysite-supported Pt-Au alloy catalyst for the selective oxidation of HMF to FDCA. The catalyst was synthesized through the organosilane functionalization of halloysite nanotubes, followed by the in situ formation and dispersion of Pt-Au alloy nanoparticles on the internal and external surfaces of nanotubes. The composition, morphology, and structure of the prepared catalyst were characterized. The catalyst with the optimal composition of Pt/Au molar ratio of 1/4 and metal loading of 1.5 wt % exhibited outstanding catalytic activity for the oxidation of HMF to FDCA using O2 as an oxidant with 100% conversion of HMF and 99% selectivity of FDCA. This excellent catalytic performance is mainly attributed to the high dispersion and alloying effects of bimetallic nanoparticles, which promoted the activation of reactants or intermediates and further improved FDCA selectivity. Furthermore, the halloysite-supported Pt/Au bimetallic catalyst showed high stability and reusability. This study provides a promising strategy by combining clay mineral halloysite and bimetallic alloys for developing efficient catalysts with high FDCA selectivity and stability for the oxidation of HMF to FDCA.
Keywords: biomass
2,5-furandicarboxylic acid
halloysite nanotubes
bimetallic alloys
Description: Published: January 11, 2022
Rights: © 2022 American Chemical Society
DOI: 10.1021/acsami.1c18788
Appears in Collections:ARC Research Hub for Graphene Enabled Industry Transformation publications
Chemical Engineering publications

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