应用化学 ›› 2023, Vol. 40 ›› Issue (11): 1572-1580.DOI: 10.19894/j.issn.1000-0518.230198

• 研究论文 • 上一篇    下一篇

含氮多孔碳限域金纳米粒子用于电化学检测液相二氧化氯

张鼎, 杨微微, 缪嵩松, 苏怡()   

  1. 中国科学院长春应用化学研究所,中国科学院高性能橡胶及其复合材料重点实验室,长春 130022
  • 收稿日期:2023-07-23 接受日期:2023-09-23 出版日期:2023-11-01 发布日期:2023-12-01
  • 通讯作者: 苏怡
  • 基金资助:
    吉林省与中国科学院科技合作高技术产业化专项资金项目(2023SYHZ0025)

Au Nanoparticles Confined in N-Doped Porous Carbon for Detection of Chlorine Dioxide in Liquid Phase

Ding ZHANG, Wei-Wei YANG, Song-Song MIAO, Yi SU()   

  1. CAS Key Laboratory of High-performance Synthetic Rubber and Its Composite Materials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2023-07-23 Accepted:2023-09-23 Published:2023-11-01 Online:2023-12-01
  • Contact: Yi SU
  • About author:suyi@ciac.ac.cn
  • Supported by:
    High Tech Industrialization Special Fund Project of Science and Technology Cooperation Between Jilin Province and Chinese Academy of Sciences(2023SYHZ0025)

摘要:

目前,二氧化氯(ClO2)消毒剂已成为最受人们青睐的绿色消毒剂之一。虽然人们广泛应用ClO2消毒剂于各个领域,但有关ClO2浓度检测的研究报道却比较少。因此,开发新型敏感材料用于检测液相ClO2显得尤为重要。以聚吡咯为氮源,与KOH混合烧结后得到的含氮多孔碳(NPC)作为基底,负载金纳米粒子后经高温煅烧去除表面活性剂,得到含氮多孔碳负载金纳米粒子催化剂(NPC-Au-P)。与传统方法制备的氮掺杂碳负载金纳米粒子相比,NPC-Au-P中多孔结构可限域金纳米粒子,使其在经过高温煅烧后仍可以保持较小的尺寸,因此具有较高的催化活性。在电化学检测液相ClO2方面,NPC-Au-P表现出较高的灵敏度(29.77 L·mA/mol))以及较低的检出限(0.12 μmol/L)。

关键词: 含氮多孔碳, 金纳米粒子, 限域, 电化学, 二氧化氯

Abstract:

At present, chlorine dioxide (ClO2) has become one of the most popular green disinfectants. Although ClO2 disinfectant has been widely used in various domains, there are few survey reports on the detection of ClO2 concentration. Therefore, it becomes an urgent demand to develop new catalyst materials for detection of ClO2 in liquid phase. Using polypyrrole as the nitrogen source, the N-doped porous carbon (NPC) is obtained by mixing and annealing with KOH as the substrate. After the loading of gold nanoparticles, the surface active agent is removed by high-temperature pyrolysis, and the Au nanoparticles embedded in N-doped porous carbon catalyst (NPC-Au-P) are obtained. Compared with the N-doped carbon supported Au nanoparticles prepared by traditional methods, the porous structure of NPC-Au-P can limit the domain of Au nanoparticles, which can maintain a smaller size after high temperature pyrolysis, so it has higher catalytic activity. For electrochemical detection of ClO2 in the liquid phase, NPC-Au-P has a high sensitivity of 29.77 L·mA/mol and a low detection limit of 0.12 μmol/L.

Key words: N-doped porous carbon, Au nanoparticles, Limit the domain, Electrochemistry, Chlorine dioxide

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