Well-Arranged Hollow Au@Zn/Ni-MOF-2-NH2Core-Shell Nanocatalyst with Enhanced Catalytic Activity for Biomass-Derived d -Xylose Oxidation

Nianqiao Qin, Xiaoyan Wu, Xinxin Liu, Zhong Hua Xue*, Mohd Muddassir, Hiroshi Sakiyama, Chi Xia, Chunyan Zhang, Linghui Zhu, Fei Ke*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Highly base-free catalytic of biomass-derived feedstock into value-added chemical is of great interest in catalysis but remains a challenge. Herein, a hollow nanocatalyst composed of Au nanoparticles as the core and Zn/Ni bimetallic metal-organic frameworks (MOFs) functionalized with the -NH2 ligand as the shell (Au@Zn/Ni-MOF-2-NH2) is fabricated through a straightforward one-pot hydrothermal method for a highly efficient, selective, and base-free synthesis of d-xylonic acid by the catalytic oxidation of d-xylose. Experimental and theoretical results confirmed the key role of hollow core-shell Au@Zn/Ni-MOF-2-NH2 in providing in-depth synergistic effects between the Au nanoparticles and the porous MOF and further facilitating the transport of reactant and product molecules, triggering a noticeably impressive turnover frequency value of 76.53 h-1 for d-xylonic acid generation, outperforming the bare Au nanocatalyst by 306 times. The highly integrated structure of Au@Zn/Ni-MOF-2-NH2 is stable for recycled use during the oxidation process, which further demonstrates the superior availability of such a bimetallic MOF-based hollow core-shell heterogeneous nanocatalyst.

Original languageEnglish (US)
Pages (from-to)5396-5403
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Volume10
Issue number17
DOIs
StatePublished - May 2 2022

Keywords

  • core-shell
  • d-xylose oxidation
  • density functional theory
  • hollow nanostructure
  • metal-organic frameworks

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Renewable Energy, Sustainability and the Environment

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