ZHANG Chengxin¹, XU Hao², WANG Yulian¹, AN Mingyan¹, WANG Yu¹, YUAN Zhigang¹,ZHANG Wu¹, LI Chuang¹, GUO Mingzhong¹, SU Desheng^3,4

(1. School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110159, China;2. Yantai Division of the 52nd Research Institute of China North Industries Group, Yantai 264003, China;3. Liaoning Dan Carbon Group Corporation Limited, Dandong 118100, China;4. Liaoning Province Ultra-high Power Graphite Electrode Material Professional Technology Innovation Center, Dandong 118100, China)

Abstract：Using reduced graphene loaded with gold nanoparticles (APR) as two-dimensional template, hyper-crosslinked polymer (HCP) porous layer with abundant pore structure was successfully constructed on the surface of graphene by solvent knitting method and named APfR-HCP. The change of specific surface area of the composite and its performance for reducing 4-nitrophenol (4-NP) were discussed. The results show that this novel composite material represents a high specific surface area (568 m²/g) and abundant pore structure. The porous layer structure can quickly absorb small molecular organic pollutants in water and concentrate on the surface of gold nanoparticles, which greatly improving the catalytic performance of the composite material for the common organic pollutant 4-NP. Meanwhile, the porous layer can effectively prevent the aggregation of gold nanoparticles. The APfR-HCP composite porous material can rapidly reduce 4-NP to 4-aminophenol (4-AP) within 4 minutes, the reaction rate constant K can be up to 1.10 min^-1. The catalytic efficiency of APfR-HCP composite porous material is much higher than that of the template APR (K=0.068 min^-1). Moreover, the material represents good recyclability, which can still maintain good catalytic performance after 5 cycles.

Keywords：nano-gold catalysis; graphene; porous structure; composite material; 4-nitrophenol reduction

Get Citation：ZHANG C X, XU H, WANG Y L, et al. Reduction of 4-nitrophenol with nano-gold@graphene composite porous material[J]. China Powder Science and Technology, 2023, 29(4): 80-93.

DOI：10.13732/j.issn.1008-5548.2023.04.008

Received：2023-02-14,Revised：2023-03-20,Online：2023-06-07 13:24。

Funding Project：国家自然科学基金项目,编号:51804200; 辽宁省教育厅科学研究青年人才项目,编号:LJKZ0246;辽宁省科技厅应用基础研究计划项目,编号:2022JH2/101300111; 沈阳市科技计划项目, 编号: 22-322-3-03;沈阳理工大学2021年引进高层次人才科研支持经费项目,编号:1010147001011。

First Author：张承昕(1989—),男,讲师,博士,研究方向为有机多孔材料制备及应用。E-mail: zhcx1989@sylu.edu.cn。

Corresponding Author：王余莲(1986—),女,教授,博士,硕士生导师,研究方向为功能矿物材料制备及应用。E-mail: ylwang0908@163.com。