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为了更有效地检测水体中的亚硝酸根离子，采用改性碳布作为基底材料，对碳布进行酸性和氨基化处理，与生成碳纳米点的协同作用，提高碳布电子转移速率，解决以往碳布电化学传感中导电差的问题。并运用一步水热法成功合成了镍钴层状氢氧化物与改性碳布的复合材料，即NiCo-LDH/CC。采用循环伏安法、差分脉冲法、计时电流法对镍钴层状氢氧化物/碳布复合材料（NiCo-LDH/CC）催化性能进行分析。研究结果表明，所制备的电化学传感器对亚硝酸根离子检测拥有较高的灵敏度[0.887 8（μA·mmol）/（L·cm）]和较低的检测限（0.018μmol/L），线性范围在50～1 000μmol/L。研究结果显示，所设计的电化学传感器不仅具备出色的稳定性，还拥有卓越的抗干扰能力和重现性，同时具有实际应用潜力。
Abstract：In order to detect nitrite ions in water more effectively,modified carbon cloth was used as the base material to treat the carbon cloth with acidic and aminization. In cooperation with the generation of carbon nanodots,the electron transfer rate of carbon cloth was improved and the problem of poor conductivity in previous electrochemical sensing of carbon cloth was solved. The composite material of nickel-cobalt layer hydroxide and modified carbon cloth,NiCo-LDH/CC was successfully synthesized by one-step hydrothermal method. The catalytic properties of nickel-cobalt layered hydroxide/carbon cloth composite material(NiCo-LDH/CC) were analyzed by cyclic voltammetry,differential pulse voltammetry and chronoamperometry. The results showed that the electrochemical sensor had a higher sensitivity for nitrite ion detection with 0. 887 8(μA·mmol)/(L·cm) and a lower detection limit with 0. 018 μmol/L,with a linear range of 50 to 1 000 μmol/L. The electrochemical sensor not only had excellent stability,but also had excellent anti-interference ability and reproducibility. The above research results show that the designed electrochemical sensor has the potential for practical application.
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基本信息:
DOI：10.20236/j.CJIAC.2025.04.001
中图分类号:O657.1
引用信息:
[1]王堂奇,王静,徐立新等.镍钴层状氢氧化物/改性碳布电极的制备及其对水体中亚硝酸根离子的检测[J].中国无机分析化学,2025,15(04):441-450.DOI:10.20236/j.CJIAC.2025.04.001.
基金信息:
南京江宁科技局创新基金资助项目（K10085）; 合肥迈诺仪器技术开发项目（H812240380）