制备Cu/CuO/ZnO/PPy异质结材料用于海水中Hg<sup>2+</sup>抗干扰检测

引用本文: 李铭, 李正明, 董晓桐, 贾良宾, 朱美燕, 马晔, 赵明岗, 崔洪芝. 制备Cu/CuO/ZnO/PPy异质结材料用于海水中Hg²⁺抗干扰检测[J]. 分析化学, 2021, 49(9): 1497-1505. doi: 10.19756/j.issn.0253-3820.211214 shu

Citation: LI Ming, LI Zheng-Ming, DONG Xiao-Tong, JIA Liang-Bin, ZHU Mei-Yan, MA Ye, ZHAO Ming-Gang, CUI Hong-Zhi. Fabrication of Cu/CuO/ZnO/PPy Heterojunction Materials for Anti-interference Detection of Hg²⁺ in Seawater[J]. Chinese Journal of Analytical Chemistry, 2021, 49(9): 1497-1505. doi: 10.19756/j.issn.0253-3820.211214 shu

制备Cu/CuO/ZnO/PPy异质结材料用于海水中Hg²⁺抗干扰检测

中国海洋大学材料科学与工程学院, 青岛 264100

通讯作者: 赵明岗,E-mail:zhaomg@ouc.edu.cn

基金项目:
中央高校基本科研业务费专项资金项目（Nos.202042009，201964011）和国家自然科学基金项目（No.52072353）资助。

摘要: Hg²⁺污染对人类健康和生态环境构成重大威胁，但目前仍缺乏直接、灵敏的Hg²⁺检测技术。本研究通过碱性氧化法和水热法制备了Cu/CuO/ZnO丝，采用电化学聚合的方法将聚吡咯（PPy）覆盖到材料表面。利用p-n结势垒驱动电化学信号响应的原理将材料用于Hg²⁺的直接电化学检测，进行了微分脉冲伏安法测试。复合材料在200~1600 nmol/L的Hg²⁺浓度范围内具有良好的线性关系，以及超高灵敏度（1010.82 μA·L/（nmol·cm²））和超低检出限（2.1 pmol/L）。基于界面势垒的新型传感模式消除了其它离子的干扰，在自来水、河水以及海水中的Hg²⁺的加标回收率为97.3%~105.0%，RSD为1.8%~5.6%。这种利用p-n结势垒的方法可推广至其它检测重金属离子的传感器的开发研究。

关键词:

English

Fabrication of Cu/CuO/ZnO/PPy Heterojunction Materials for Anti-interference Detection of Hg²⁺ in Seawater

Department of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China

Corresponding author: ZHAO Ming-Gang, zhaomg@ouc.edu.cn

Received Date: 17 March 2021
Revised Date: 04 July 2021
Fund Project:
Supported by the Fundamental Research Funds for the Central University of China (Nos.202042009, 201964011) and the National Natural Science Foundation of China (No.52072353).

Abstract: Hg²⁺ pollutant poses significant risks to human health and the ecological environment. However, the direct and sensitive detection technique for Hg²⁺ has been lacking at the present time. In this study, Cu/CuO/ZnO wire was fabricated by alkaline oxidation method and hydrothermal method, and PPy was covered on the material surface by electrochemical polymerization method. Based on the principle that the p-n junction barrier drives the electrochemical signal response, the material was used for direct electrochemical detection of Hg²⁺ and differential pulse voltammetry was performed. The prepared composite was successfully used for detection of Hg²⁺ in the concentration range from 200 nmol/L to 1600 nmol/L, with a ultra-high sensitivity (1010.82 μA·L/(nmol·cm²)) and a ultra-low detection limit (2.1 pmol/L). The novel sensing mode based on the interface barrier eliminated the interference of other ions and achieved good recoveries (97.3%-105.0%) in tap water, river water and sea water, with RSD of 1.8%-5.6%. This approach could be extended to develop new sensors for other heavy metals by employing p-n junction barrier.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

制备Cu/CuO/ZnO/PPy异质结材料用于海水中Hg²⁺抗干扰检测

通讯作者: 赵明岗,E-mail:zhaomg@ouc.edu.cn

English

Fabrication of Cu/CuO/ZnO/PPy Heterojunction Materials for Anti-interference Detection of Hg²⁺ in Seawater

Corresponding author: ZHAO Ming-Gang, zhaomg@ouc.edu.cn

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

制备Cu/CuO/ZnO/PPy异质结材料用于海水中Hg2+抗干扰检测

通讯作者: 赵明岗,E-mail:zhaomg@ouc.edu.cn

English

Fabrication of Cu/CuO/ZnO/PPy Heterojunction Materials for Anti-interference Detection of Hg2+ in Seawater

Corresponding author: ZHAO Ming-Gang, zhaomg@ouc.edu.cn

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

制备Cu/CuO/ZnO/PPy异质结材料用于海水中Hg²⁺抗干扰检测

Fabrication of Cu/CuO/ZnO/PPy Heterojunction Materials for Anti-interference Detection of Hg²⁺ in Seawater

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs