Juan Gao, Sen Yang, Chen Xu, Zerui Dong, SiZhu Chen, Lingcheng Zheng, Leilei Lan, Gang He
{"title":"氧空位调制TiO2纳米管对强力霉素的超灵敏检测","authors":"Juan Gao, Sen Yang, Chen Xu, Zerui Dong, SiZhu Chen, Lingcheng Zheng, Leilei Lan, Gang He","doi":"10.1007/s00604-025-07072-6","DOIUrl":null,"url":null,"abstract":"<div><p>TiO<sub>2</sub> nanotubes rich in oxygen vacancies (Ov), which were successfully fabricated on Ti foils, were used as the working electrode of a photoelectrochemical (PEC) sensor. The TiO<sub>2</sub> nanotube electrode optimized with abundant Ov demonstrated a remarkable photocurrent density of 1.03 mA/cm<sup>2</sup>, which is approximately 2.9 times higher than that of the TiO<sub>2</sub> nanotube electrode. When applied to the detection of DOC, this electrode exhibited a wide linear detection range spanning from 0.1 to 100 μM and achieved an exceptionally low detection limit of 0.043 μM with a signal-to-noise ratio of 3. Furthermore, comparative experiments indicated that the Ov-enriched TiO<sub>2</sub> nanotube electrode exhibited excellent anti-interference capabilities and long-term stability, ensuring the accuracy and reliability of the detection outcomes. The superior detection performance is primarily attributed to two aspects: on one hand, Ov act as electron traps, facilitating the capture and transfer of photogenerated electrons, effectively prolonging the lifetime of these carriers; on the other hand, Ov also serves as active sites, enhancing the adsorption of DOC molecules and reaction kinetics, further amplifying the detection signal. This work offers a theoretical and experimental groundwork for the rapid monitoring of residual antibiotics.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div><div><p>Graphical Abstract</p></div></div></figure></div></div>","PeriodicalId":705,"journal":{"name":"Microchimica Acta","volume":"192 4","pages":""},"PeriodicalIF":5.4000,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ultrasensitive detection of doxycycline enabled by oxygen vacancy modulated TiO2 nanotubes\",\"authors\":\"Juan Gao, Sen Yang, Chen Xu, Zerui Dong, SiZhu Chen, Lingcheng Zheng, Leilei Lan, Gang He\",\"doi\":\"10.1007/s00604-025-07072-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>TiO<sub>2</sub> nanotubes rich in oxygen vacancies (Ov), which were successfully fabricated on Ti foils, were used as the working electrode of a photoelectrochemical (PEC) sensor. The TiO<sub>2</sub> nanotube electrode optimized with abundant Ov demonstrated a remarkable photocurrent density of 1.03 mA/cm<sup>2</sup>, which is approximately 2.9 times higher than that of the TiO<sub>2</sub> nanotube electrode. When applied to the detection of DOC, this electrode exhibited a wide linear detection range spanning from 0.1 to 100 μM and achieved an exceptionally low detection limit of 0.043 μM with a signal-to-noise ratio of 3. Furthermore, comparative experiments indicated that the Ov-enriched TiO<sub>2</sub> nanotube electrode exhibited excellent anti-interference capabilities and long-term stability, ensuring the accuracy and reliability of the detection outcomes. The superior detection performance is primarily attributed to two aspects: on one hand, Ov act as electron traps, facilitating the capture and transfer of photogenerated electrons, effectively prolonging the lifetime of these carriers; on the other hand, Ov also serves as active sites, enhancing the adsorption of DOC molecules and reaction kinetics, further amplifying the detection signal. This work offers a theoretical and experimental groundwork for the rapid monitoring of residual antibiotics.</p><h3>Graphical abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div><div><p>Graphical Abstract</p></div></div></figure></div></div>\",\"PeriodicalId\":705,\"journal\":{\"name\":\"Microchimica Acta\",\"volume\":\"192 4\",\"pages\":\"\"},\"PeriodicalIF\":5.4000,\"publicationDate\":\"2025-03-07\",\"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/s00604-025-07072-6\",\"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/s00604-025-07072-6","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Ultrasensitive detection of doxycycline enabled by oxygen vacancy modulated TiO2 nanotubes
TiO2 nanotubes rich in oxygen vacancies (Ov), which were successfully fabricated on Ti foils, were used as the working electrode of a photoelectrochemical (PEC) sensor. The TiO2 nanotube electrode optimized with abundant Ov demonstrated a remarkable photocurrent density of 1.03 mA/cm2, which is approximately 2.9 times higher than that of the TiO2 nanotube electrode. When applied to the detection of DOC, this electrode exhibited a wide linear detection range spanning from 0.1 to 100 μM and achieved an exceptionally low detection limit of 0.043 μM with a signal-to-noise ratio of 3. Furthermore, comparative experiments indicated that the Ov-enriched TiO2 nanotube electrode exhibited excellent anti-interference capabilities and long-term stability, ensuring the accuracy and reliability of the detection outcomes. The superior detection performance is primarily attributed to two aspects: on one hand, Ov act as electron traps, facilitating the capture and transfer of photogenerated electrons, effectively prolonging the lifetime of these carriers; on the other hand, Ov also serves as active sites, enhancing the adsorption of DOC molecules and reaction kinetics, further amplifying the detection signal. This work offers a theoretical and experimental groundwork for the rapid monitoring of residual antibiotics.
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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