材料化学综合实验：电化学法将尿素定向转化为亚硝酸盐

引用本文: 王艳琴, 王康, 孙琛, 杨哲晰. 材料化学综合实验：电化学法将尿素定向转化为亚硝酸盐[J]. 大学化学, 2026, 41(6): 415-424. doi: 10.12461/PKU.DXHX202603025 shu

Citation: Yanqin Wang, Kang Wang, Chen Sun, Zhexi Yang. Comprehensive Experiment of Materials Chemistry: Directional Conversion of Urea to Nitrite by Electrochemical Method[J]. University Chemistry, 2026, 41(6): 415-424. doi: 10.12461/PKU.DXHX202603025 shu

材料化学综合实验：电化学法将尿素定向转化为亚硝酸盐

内蒙古大学化学化工学院, 内蒙古呼和浩特 010021

通讯作者: 王艳琴,Email:yqwang_chem@imu.edu.cn

基金项目:
教育部产学合作协同育人项目(230702002130552)；教育部供需对接就业育人项目(2023122543779)；2025年内蒙古大学校级创新创业训练计划(202514237)

摘要: 将利用电化学手段使尿素分子定向转化为高附加值亚硝酸盐的方法引入本科教学实验中，设计了一个Co掺杂Ni₃S₂ (Co-Ni₃S₂)催化剂用于尿素分子的定向催化转化。实验以Co-Ni₃S₂为阳极催化剂，在碱性尿素电解液中，采用三电极测试系统开展电催化性能评估。通过系统考察施加电位与Co掺杂策略对产物选择性的影响，筛选最优反应条件，结合NO₂^-的定量检测，进一步计算其法拉第效率和产率等关键评价指标。该实验将无机材料制备、电化学测试与分析化学定量检测有机结合，使学生了解尿素资源化“变废为宝”的意义及NO₂^-在化学工业中的重要经济价值。通过该实验的实施培养了学生的科学思维能力、实验设计与科研创新能力，具有较好的教学可实施性与推广价值。

关键词:

English

Comprehensive Experiment of Materials Chemistry: Directional Conversion of Urea to Nitrite by Electrochemical Method

College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, Inner Mongolia Autonomous Region, China

Corresponding author: Yanqin Wang, yqwang_chem@imu.edu.cn

Received Date: 10 March 2026
Revised Date: 15 April 2026
Available Online: 08 May 2026

Abstract: This study introduces an undergraduate teaching experiment that employs electrochemical methods to directionally convert urea into high-value nitrite. A Co-doped Ni₃S₂ (Co-Ni₃S₂) catalyst was designed for the catalytic conversion of urea molecules. Using Co-Ni₃S₂ as the anode catalyst in an alkaline urea electrolyte, the electrocatalytic performance was evaluated via a three-electrode testing system. The effects of applied potential and Co-doping strategy on product selectivity were systematically investigated to identify optimal reaction conditions. Quantitative detection of NO₂^- was performed, and key evaluation metrics such as Faradaic efficiency and yield rate were calculated. This experiment integrates inorganic material preparation, electrochemical testing, and analytical chemistry techniques, enabling students to appreciate the significance of urea resource utilization (“turning waste into wealth”) and the economic value of NO₂^- in the chemical industry. The experiment enhances students’ scientific thinking, experimental design, and research innovation capabilities, demonstrating strong feasibility and educational value.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

材料化学综合实验：电化学法将尿素定向转化为亚硝酸盐

通讯作者: 王艳琴,Email:yqwang_chem@imu.edu.cn

English

Comprehensive Experiment of Materials Chemistry: Directional Conversion of Urea to Nitrite by Electrochemical Method

Corresponding author: Yanqin Wang, yqwang_chem@imu.edu.cn

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

材料化学综合实验：电化学法将尿素定向转化为亚硝酸盐

通讯作者: 王艳琴,Email:yqwang_chem@imu.edu.cn

English

Comprehensive Experiment of Materials Chemistry: Directional Conversion of Urea to Nitrite by Electrochemical Method

Corresponding author: Yanqin Wang, yqwang_chem@imu.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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