张承昕¹, 徐 昊², 王余莲¹, 安明艳¹, 王 宇¹, 袁志刚¹, 张 武¹, 李 闯¹, 郭明忠¹, 苏德生^3,4

1. 沈阳理工大学 材料科学与工程学院, 辽宁 沈阳 110159;

2. 中国兵器工业集团第五二研究所烟台事业部, 山东 烟台 264003;

3. 辽宁丹炭科技集团有限公司, 辽宁 丹东 118100;

4. 辽宁省超高功率石墨电极材料专业技术创新中心, 辽宁 丹东 118100

引用格式：张承昕, 徐昊, 王余莲, 等. 纳米金@石墨烯复合多孔材料还原4-硝基苯酚[J]. 中国粉体技术, 2023, 29(4): 80-93.

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

收稿日期：2023-02-14，修回日期：2023-03-20，在线出版时间：2023-06-07 13:24。

基金项目：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。

第一作者简介：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。

通信作者简介：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。

摘要：以负载纳米金颗粒的还原石墨烯(APR)为二维模板，采用溶剂编织法在石墨烯表面成功构建具有多孔结构的超交联聚合物(hyper-crosslinked polymer, HCP)并命名为APfR-HCP,探讨复合材料比表面积的变化及还原4-硝基苯酚(4-NP)的性能。结果表明：该新型复合材料具有较大的比表面积(568 m2/g)和丰富的孔道结构；多孔层结构的存在可以快速吸附水体中的小分子有机污染物并富集到金纳米颗粒表面，大大提升复合材料对常见有机污染物4-NP的催化性能；同时还可以有效阻止金纳米颗粒的团聚。APfR-HCP复合多孔材料可以在4 min内迅速将4-NP还原为4-氨基苯酚(4-AP),反应速率常数K可达1.10 min-1。APfR-HCP复合多孔材料的催化效率远大于模板APR(K=0.068 min-1),并且具有良好的循环利用性，循环使用5次后仍具有良好的催化性能。

关键词：纳米金催化; 石墨烯; 多孔结构; 复合材料; 4-硝基苯酚还原

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 constantKcan 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

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