高等学校化学学报2025，Vol.46Issue(11)：39-49,11.DOI:10.7503/cjcu20250140
纳米片FeSe基电化学传感器用于压裂返排液中痕量亚硝酸根的快速检测
Nanosheet FeSe-based Electrochemical Sensor for Rapid Detection of Trace Nitrite Ions in Fracturing Flowback Fluid
摘要
Abstract
A stable CDs/CC superhydrophilic substrate material with uniform anchoring sites was constructed by growing carbon dots(CDs)containing oxygen functional groups on dielectric barrier discharge(DBD)-modified flexible carbon cloth(CC)using a hydrothermal method.The FeSe/CDs/CC nitrite electrochemical sensor was further constructed by growing flaky FeSe nanomaterials on this substrate by a simple and rapid microwave method,and was characterised by X-ray diffraction(XRD),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS)and energy dispersive spectrometer(EDS).The electrochemical performance results showed that the success-ful modification of CDs and FeSe significantly improved the charge transfer resistance of CC.Under the optimal detec-tion conditions,the oxidation peak current showed a good linear relationship with the nitrite concentration in the ranges of 0.3-10 µmol/L and 10-1000 µmol/L,with the sensitivities of 5477.80 µA∙(mmol/L)∙cm2 and 1828.84 µA∙(mmol/L)∙cm2,and the detection limit of 0.11 µmol/L,respectively.In addition,the sensor possessed excellent immunity to interferences,long-term stability,repeatability and reproducibility,and the recoveries of nitrite spiked in the fracture flowback fluid were in the range of 97.75%—103.12%.关键词
硒化铁/碳点/碳布(FeSe/CDs/CC)/亚硝酸盐/电化学传感器/压裂返排液Key words
FeSe/CDs/CC/Nitrite/Electrochemical sensor/Fracture flowback fluid分类
化学引用本文复制引用
张翔,吕海燕,吕宝强,吕小明,李娥,徐春丽,苏小东..纳米片FeSe基电化学传感器用于压裂返排液中痕量亚硝酸根的快速检测[J].高等学校化学学报,2025,46(11):39-49,11.基金项目
低渗透油气田勘探开发国家工程实验室开发课题(批准号:CQYT-CQYQY-2023-JS-1247)资助. Supported by the National Engineering Laboratory for Exploration and Development of Low Permeability Oil and Gas Fields Development Project,China(No.CQYT-CQYQY-2023-JS-1247). （批准号:CQYT-CQYQY-2023-JS-1247）
