{"title":"CuFeO2/NiCo-LDH异质结电化学传感器对水中四环素的高灵敏度检测及机理研究","authors":"Aijin Xiao, Meng Li, Yiluo Hu, Wei Zhang, Huiping Bai, Xuejun Pan, Fengzhi Jiang","doi":"10.1007/s00604-025-07508-z","DOIUrl":null,"url":null,"abstract":"<div><p>A CuFeO<sub>2</sub>/NiCo-LDH heterojunction electrochemical sensor (LDH: layered double hydroxide) was developed for the sensitive detection of tetracycline (TC). The sensor was constructed by integrating ZIF-67-derived nanocage NiCo-LDH on nickel foam with CuFeO<sub>2</sub>, forming a p-n heterojunction that enhanced electron transfer and TC adsorption. The sensor exhibited bilinear detection ranges (0.00594 ~ 1 and 1 ~ 25 μM) and a low detection limit of 1.98 nM. Recoveries in real water samples ranged from 92.0 to 109.0%, with relative standard deviations not exceeding 4.5%. In situ Raman spectroscopy and density functional theory calculations confirmed the involvement of multiple redox pairs (Ni<sup>3+</sup>/Ni<sup>2+</sup>, Co<sup>3+</sup>/Co<sup>2+</sup>, Fe<sup>3+</sup>/Fe<sup>2+</sup> and Cu<sup>2+</sup>/Cu<sup>+</sup>) and strong interfacial adsorption energy. This sensor presents a practical and efficient approach for onsite TC monitoring.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 10","pages":""},"PeriodicalIF":5.3000,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Highly sensitive detection and mechanism study of tetracycline in water by CuFeO2/NiCo-LDH heterojunction electrochemical sensor\",\"authors\":\"Aijin Xiao, Meng Li, Yiluo Hu, Wei Zhang, Huiping Bai, Xuejun Pan, Fengzhi Jiang\",\"doi\":\"10.1007/s00604-025-07508-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A CuFeO<sub>2</sub>/NiCo-LDH heterojunction electrochemical sensor (LDH: layered double hydroxide) was developed for the sensitive detection of tetracycline (TC). The sensor was constructed by integrating ZIF-67-derived nanocage NiCo-LDH on nickel foam with CuFeO<sub>2</sub>, forming a p-n heterojunction that enhanced electron transfer and TC adsorption. The sensor exhibited bilinear detection ranges (0.00594 ~ 1 and 1 ~ 25 μM) and a low detection limit of 1.98 nM. Recoveries in real water samples ranged from 92.0 to 109.0%, with relative standard deviations not exceeding 4.5%. In situ Raman spectroscopy and density functional theory calculations confirmed the involvement of multiple redox pairs (Ni<sup>3+</sup>/Ni<sup>2+</sup>, Co<sup>3+</sup>/Co<sup>2+</sup>, Fe<sup>3+</sup>/Fe<sup>2+</sup> and Cu<sup>2+</sup>/Cu<sup>+</sup>) and strong interfacial adsorption energy. This sensor presents a practical and efficient approach for onsite TC monitoring.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":705,\"journal\":{\"name\":\"Microchimica Acta\",\"volume\":\"192 10\",\"pages\":\"\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2025-09-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Microchimica Acta\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s00604-025-07508-z\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Microchimica Acta","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s00604-025-07508-z","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Highly sensitive detection and mechanism study of tetracycline in water by CuFeO2/NiCo-LDH heterojunction electrochemical sensor
A CuFeO2/NiCo-LDH heterojunction electrochemical sensor (LDH: layered double hydroxide) was developed for the sensitive detection of tetracycline (TC). The sensor was constructed by integrating ZIF-67-derived nanocage NiCo-LDH on nickel foam with CuFeO2, forming a p-n heterojunction that enhanced electron transfer and TC adsorption. The sensor exhibited bilinear detection ranges (0.00594 ~ 1 and 1 ~ 25 μM) and a low detection limit of 1.98 nM. Recoveries in real water samples ranged from 92.0 to 109.0%, with relative standard deviations not exceeding 4.5%. In situ Raman spectroscopy and density functional theory calculations confirmed the involvement of multiple redox pairs (Ni3+/Ni2+, Co3+/Co2+, Fe3+/Fe2+ and Cu2+/Cu+) and strong interfacial adsorption energy. This sensor presents a practical and efficient approach for onsite TC monitoring.
期刊介绍：
As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.
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