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A Robust Wood-inspired Catalytic System for Highly Efficient Reduction of 4-Nitrophenol

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Chemical Research in Chinese Universities Aims and scope

Abstract

Porous solid scaffolds play key roles in preventing nanocatalysts from agglomeration, greatly maintaining the catalytic efficiency and stability of nanocatalysts. However, facile preparation of robust scaffolds with high mass transfer efficiency for loading nanocatalysts remains a major challenge. Here, we fabricate a wood-inspired shape-memory chitosan scaffold for loading Au nanoparticles to reduce 4-nitrophenol via a simple “freeze-casting and dip-adsorption” approach. The obtained catalytic scaffold highly resembles the unidirectional microchannel structure of natural wood, resulting in robust mechanical properties and outstanding water absorption capacity. Additionally, Au nanoparticles can be firmly and uniformly anchored on the inner surface of these microchannels via electrostatic interaction, forming numerous microreactors. This catalytic system exhibits a high 4-nitrophenol conversion rate of 99% in 5 s and impressive catalytic stability even after continuously treating with more than 3 L of highly concentrated 4-nitrophenol solution(1 mmol/L). Therefore, the wood-like catalytic system presented here demonstrates the potential to be applied in the field of water treatment and environmental protection.

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Acknowledgements

This work was supported by the National Key Research and Development Program of China(No.2021YFA0715700), the National Natural Science Foundation of China(Nos.1732011, U1932213, 21975241), and the University Synergy Innovation Program of Anhui Province, China(No.GXXT-2019-028).

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Authors and Affiliations

  1. Department of Chemistry, Institute of Biomimetic Materials and Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials and Chemistry, Hefei National Research Center for Physical Sciences at the Microscale Institute of Energy, Hefei Comprehensive National Science Center, University of Science and Technology of China, Hefei, 230026, P. R. China

    Zeyu Wang, Fei Long, Huailing Gao & Shuhong Yu

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  1. Zeyu Wang
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  2. Fei Long
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  3. Huailing Gao
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  4. Shuhong Yu
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Correspondence to Huailing Gao or Shuhong Yu.

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Wang, Z., Long, F., Gao, H. et al. A Robust Wood-inspired Catalytic System for Highly Efficient Reduction of 4-Nitrophenol. Chem. Res. Chin. Univ. 39, 109–114 (2023). https://doi.org/10.1007/s40242-023-2338-4

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  • DOI: https://doi.org/10.1007/s40242-023-2338-4

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