摘要
三维多孔泡沫碳是一种重要的催化剂载体材料,如何开发新型的泡沫炭基复合催化剂材料具有重要意义。首先采用高温热解法将三聚氰胺泡沫制成泡沫碳;然后通过原位聚合法制备泡沫碳/聚吡咯复合载体;进一步采用氨基硅烷偶联剂修饰CF@PPy,并通过浸泡法在其表面修饰金种子,制备泡沫碳/聚吡咯负载金纳米粒子催化剂;最后,通过化学还原法制备出多孔泡沫碳/聚吡咯负载金纳米线催化剂。采用扫描电镜对复合催化剂的形貌进行表征。结果表明:聚吡咯均匀地生长在泡沫碳上,金纳米线均匀地负载在泡沫碳/聚吡咯上面。利用紫外-可见光谱分别研究该催化剂在水相和油水乳液中对4-硝基苯酚的催化还原效果。实验得出:CF@PPy@AuNWs比CF@PPy@AuNPs具有更优的催化还原效果,且循环使用5次后的催化效率仍大于90%。本方法制备过程简单,催化性能良好,具有重要的科学意义和较大的潜在应用价值。
Three-dimensional porous foam carbon is an important catalyst support material,and how to develop new foam carbon-based composite catalyst material is of great significance.The foam carbon was first prepared by high-temperature pyrolysis of melamine foam.Subsequently,foam carbon/polypyrrole composite carrier was synthesized via in-situ polymerization process.Then,aminosilane coupling agent was used to modify CF@PPy,followed by modifying gold seeds on its surface through immersing method.Finally,the foam carbon/polypyrrole supported gold nanowires composite catalyst was prepared via chemical reduction method.The morphology of the composite catalyst was characterized using scanning electron microscopy(SEM).The results showed that the polypyrrole grew uniformly on the foam carbon and the gold nanowires were evenly loaded on the foam carbon/polypyrrole.UV-Vis spectroscopy was employed to investigate the catalytic reduction efficiency of the catalyst for 4-nitrophenol both in aqueous phase and oil-water emulsion,respectively.The results demonstrated that compared to CF@PPy@AuNPs,CF@PPy@AuNWs exhibited superior catalytic reduction performance,and the catalytic efficiency remained above 90%even after 5 cycles of reuse.This method had a simple preparation process and excellent catalytic performance,possessing important scientific significance and great potential application value.
作者
于俊
徐鑫磊
刘振中
应佳蕾
陈瑛
袁太阳
Yu Jun;Xu Xinlei;Liu Zhenzhong;Ying Jialei;Chen Ying;Yuan Taiyang(Henan Vocational University of Science and Technology,Zhoukou 466000;Taizhou Research Institute of Zhejiang University,Taizhou 318000;College of Polymer Science and Engineering,Sichuan University,Chengdu 610065;Zhejiang Huanzhimei Environmental Technology Co.,Ltd.,Taizhou 318000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2024年第S01期187-191,198,共6页
New Chemical Materials
基金
台州市科技计划项目(22gyb16和22gyb26)
台州市高层次人才特殊支持计划(青年人才)(2023NMS01)。
