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Turkish Journal of Chemistry

Abstract

Bimetal nanocatalysts hold significant application potential in catalytic reactions due to their compositions, morphologies, and electronic structures. In the present work, a series of AuPd alloy dendrites were successfully prepared using sodium formate, without surfactants or templates. A systematic investigation was then conducted to analyze the composition of the AuPd bimetallic dendrites and the effects of preparation conditions on their structure and catalytic performance. The AuPd alloy dendrites were characterized through various techniques, including scanning electron microscopy, transmission electron microscopy, X-ray energy scattering spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The results showed that the Au:Pd ratio in the AuPd alloy dendrites closely matched the initial feeding ratio. The catalytic activity and stability of the AuPd alloy dendrites towards 4-nitrophenol reduction were remarkably higher compared to those of the single metal Au and Pd nanocatalysts. Specifically, the Au1Pd1 alloy dendrites exhibited the highest catalytic reduction activity for 4-nitrophenol, with a reaction rate constant of 1.05 × 10⁻². Moreover, the stability of the Au1Pd1 alloy dendrites was also examined. The results demonstrated that the catalytic stability of the Au1Pd1 alloy dendrites did not experience a significant decrease even after five cycles of operation.

Author ORCID Identifier

JUN LIU: 0000-0002-1772-5118

XUANYAN LIU: 0000-0002-8874-9803

HONGGUANG LIAO: 0000-0002-0169-4046

DOI

10.55730/1300-0527.3721

Keywords

Heterogeneous catalyst, AuPd bimetallic dendrites, agglomerated structure, catalytic reduction, 4-nitrophenol

First Page

191

Last Page

203

Publisher

Scientific and Technological Research Council of Türkiye (TUBITAK)

Creative Commons License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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