大学化学 >> 2022, Vol. 37 >> Issue (3): 2105033.doi: 10.3866/PKU.DXHX202105033

化学实验 上一篇    下一篇

聚苯胺负载纳米金催化剂的制备及其催化性能研究综合实验设计

张杰, 尹泽群, 孙立波(), 张岩, 高玥, 徐之婷, 宋薇   

  • 收稿日期:2021-05-12 录用日期:2021-06-07 发布日期:2021-06-17
  • 通讯作者: 孙立波 E-mail:sunlibo@ytu.edu.cn
  • 作者简介:孙立波, Email: sunlibo@ytu.edu.cn
  • 基金资助:
    国家自然科学基金青年基金项目(21802117);山东省自然科学基金博士基金项目(ZR2019BB079);烟台大学教学改革项目(jyxm2020015)

The Comprehensive Experiment of Preparation of PANI Supported Nano Au Catalysts and the Study of Catalytic Properties

Jie Zhang, Zequn Yin, Libo Sun(), Yan Zhang, Yue Gao, Zhiting Xu, Wei Song   

  • Received:2021-05-12 Accepted:2021-06-07 Published:2021-06-17
  • Contact: Libo Sun E-mail:sunlibo@ytu.edu.cn

摘要:

将科研课题“聚苯胺负载纳米金催化剂的制备及其催化性能研究”设计成应用化学专业综合实验,将科研课题的创新性和教学可行性有机结合,以推进创新型人才的培养。实验以苯胺单体(ANI)为原料,以过硫酸铵(APS)为氧化剂,制备聚苯胺(PANI)载体。采用金胶负载法、PANI原位还原法、ANI原位还原法三种载金方式分别制备PANI负载纳米金催化剂,并以NaBH4存在条件下,对硝基酚(4-NP)还原制备对氨基酚反应(4-AP)为探针评价催化剂的催化性能。实验内容多学科交叉融合,涉及催化剂的制备、催化剂的结构表征、催化剂的活性评价等多种内容。通过本次实验,学生可以经历催化学科科学研究的全过程,掌握催化材料的制备方法,并熟练运用红外光谱(FT-IR)、紫外光谱(UV-Vis)、X射线衍射光谱(XRD)等大型设备对所制备催化材料进行分析,进而激发学生的学习兴趣,提高学生的科研素养。

关键词: 综合性实验, 纳米金催化剂, 聚苯胺, 催化活性

Abstract:

The scientific research of preparation of PANI supported nano Au catalysts and the study of catalytic properties was designed as a comprehensive experiment for students of applied chemistry. The innovation of scientific research and the feasibility of teaching were combined organically to promote the cultivation of innovative talents. In this experiment, polyaniline (PANI) support was prepared with aniline monomer (ANI) as raw material and ammonium persulfate (APS) as oxidant. Three kinds of gold loading methods, such as gold sol adsorption, PANI in situ reduction and ANI in situ reduction, were used to prepare PANI supported Au catalysts. The reduction of p-nitrophenol (4-NP) to p-aminophenol (4-AP) in the presence of NaBH4 was used as a probe reaction to evaluate the catalytic performance of the catalysts. The experiment involved multiple contents, such as the preparation of catalysts, the structural characterization of catalysts and the evaluation of catalytic activities. Through this experiment, students could experience the whole process of scientific research in the subject of catalysis, master the preparation methods of catalytic materials. They also could proficiently use large-scale equipment, such as infrared spectroscopy (FT-IR), ultraviolet spectroscopy (UV-Vis), X-ray diffraction spectroscopy (XRD), to analyze the structure of the prepared catalysts. Through this experiment, the interest of learning of students could be stimulated and the scientific research literacy of students could be improved.

Key words: Comprehensive experiment, Nano gold catalyst, Polyaniline, Catalytic activities

MSC2000: 

  • G64