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CuxOAu–ZnO nano/microstructures with various morphologies and their catalytic applications in reduction in 4-nitrophenol

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Abstract

In this paper, CuxOAu–ZnO nano-catalysts with different morphologies were synthesized by one-step replacement method. The nano-catalysts are characterized by scanning electron microscopy, energy-dispersive X-ray analysis, transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. These novel CuxOAu–ZnO nano-catalysts exhibit exceptionally high stability and superior 4-nitrophenol to 4-aminophenol hydrogenation ability. The relationship between catalytic performances and changes of composition were investigated, and the catalytic activity decreased in the following order: CuxO30Au35–ZnO > CuxO38Au35–ZnO > CuxO21Au45–ZnO. The influence of catalytic conditions for the performance of catalysts has also studied. For the CuxO30Au35–ZnO catalysts, the rate constant kapp could be up to 18.6 × 10−3 s−1, and the conversion of the 4-NP could still reach 98.66% after five cycles. The high activity of CuxO30Au35–ZnO may be attributed to the synergistic effect between Au and Cu element. The unique structure and high catalytic performance make CuxOAu–ZnO nano-catalysts for practical applications in 4-nitrophenol reduction.

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Acknowledgements

We appreciate financial support from the Natural Science Foundation of Hunan Province (Grant No. 2022JJ60043).

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Authors and Affiliations

  1. Department of Pharmaceutical and Biological Engineering, Hunan Chemical Vocational Technology College, Zhuzhou, 412000, Hunan, People’s Republic of China

    Jun Liu, Lixin Lan, Xuanyan Liu, Quan Zhou & Rong Li

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  1. Jun Liu
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  2. Lixin Lan
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  3. Xuanyan Liu
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  4. Quan Zhou
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  5. Rong Li
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Correspondence to Jun Liu.

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Liu, J., Lan, L., Liu, X. et al. CuxOAu–ZnO nano/microstructures with various morphologies and their catalytic applications in reduction in 4-nitrophenol. J IRAN CHEM SOC 20, 1145–1154 (2023). https://doi.org/10.1007/s13738-022-02741-2

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