This study presents an electrochemical sensor for sensitive detection of nitroaromatic compounds using a three‐dimensional (3D) porous graphene with polyoxypropylene supported reduced graphene oxide (PEA‐RGO) and embedded β‐cyclodextrins (β‐CD). First, PEA‐RGO was synthesized by the condensation reaction between graphene oxide (GO) and amino‐terminated polyoxypropylene (PEA), followed by hydrazine hydrate reduction. Then, β‐CD was embedded into the porous of the above 3D graphene to obtain PEA‐RGO/β‐CD nanohybrid. Various characterization techniques, such as microscopy imaging, infrared spectrometry, thermal analysis and electrochemical measurements, were employed to confirm the successful synthesis and unique 3D architecture structure of PEA‐RGO/β‐CD. Afterwards
{"title":"An Electrochemical Sensor Based on 3D Graphene‐Cyclodextrin Nanohybrid for Enhanced Sensitivity Detection of Nitroaromatic Compounds","authors":"Ziao Di, Yu Zhang, Zuhang Ding, Jiayu Huang, Lujia Mao, Hongjun Wei, Jin Zhao","doi":"10.1002/elan.202400272","DOIUrl":"https://doi.org/10.1002/elan.202400272","url":null,"abstract":"This study presents an electrochemical sensor for sensitive detection of nitroaromatic compounds using a three‐dimensional (3D) porous graphene with polyoxypropylene supported reduced graphene oxide (PEA‐RGO) and embedded β‐cyclodextrins (β‐CD). First, PEA‐RGO was synthesized by the condensation reaction between graphene oxide (GO) and amino‐terminated polyoxypropylene (PEA), followed by hydrazine hydrate reduction. Then, β‐CD was embedded into the porous of the above 3D graphene to obtain PEA‐RGO/β‐CD nanohybrid. Various characterization techniques, such as microscopy imaging, infrared spectrometry, thermal analysis and electrochemical measurements, were employed to confirm the successful synthesis and unique 3D architecture structure of PEA‐RGO/β‐CD. Afterwards","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"34 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Electrochemistry with purines as indicators may be a promising new method for antibiotic activity testing. However, the traditional electrochemical detection method (S‐LSV) requires a long accumulation time for purines and has low signal intensity. High‐temperature treatment of bacterial samples may significantly enhance the signal intensity and speed of detection. However, this process may also impact the structure and metabolism of bacteria. Further research is necessary to determine how electrochemical signals respond to antibiotic antibacterial activity. In this paper, the electrochemical detection method based on heat‐treated Escherichia coli ( <i>E. coli</i>, H‐LSV) was used to investigate the
{"title":"Evaluation of the antibacterial activity of antibiotics with different antibacterial mechanisms using electrochemical signals of heat‐treated Escherichia coli","authors":"Jiaqi Fu, Jincheng Du, Ting Hou, Zhong Wang, Liyuan Sui, Jinlian Li, Yanli Zhao, Ximing Cui, Wu Dongmei","doi":"10.1002/elan.202400161","DOIUrl":"https://doi.org/10.1002/elan.202400161","url":null,"abstract":"Electrochemistry with purines as indicators may be a promising new method for antibiotic activity testing. However, the traditional electrochemical detection method (S‐LSV) requires a long accumulation time for purines and has low signal intensity. High‐temperature treatment of bacterial samples may significantly enhance the signal intensity and speed of detection. However, this process may also impact the structure and metabolism of bacteria. Further research is necessary to determine how electrochemical signals respond to antibiotic antibacterial activity. In this paper, the electrochemical detection method based on heat‐treated Escherichia coli ( <i>E. coli</i>, H‐LSV) was used to investigate the","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"40 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Numerical finite element simulations were conducted to study the electrochemical reaction in a mixture of hetrocharge redox couple in the presence of a supporting electrolyte as a potential application in lithium ion battery, occurring on both parallel and non‐parallel two dimensional (2‐D ) microdisk electrodes. Ion size of supporting electrolyte and electron transfer rate by engineering of electrode types have significant effect on electrical storage. This study represents the first‐time exploration of the electrochemical behavior for hetrocharge +1,0 redox couple in presence of supporting electrolyte on a non‐parallel 2D microdisk. Impedance spectra were calculated for the electrochemical reaction
{"title":"Ion Size, Electron Rate and Transfer Coefficient Effect on Hetrocharge Redox Couple (+1,0) for 2‐D Microdisk, Potential Application for Lithium Ion Battery","authors":"Farid Taherkhani","doi":"10.1002/elan.202400134","DOIUrl":"https://doi.org/10.1002/elan.202400134","url":null,"abstract":"Numerical finite element simulations were conducted to study the electrochemical reaction in a mixture of hetrocharge redox couple in the presence of a supporting electrolyte as a potential application in lithium ion battery, occurring on both parallel and non‐parallel two dimensional (2‐D ) microdisk electrodes. Ion size of supporting electrolyte and electron transfer rate by engineering of electrode types have significant effect on electrical storage. This study represents the first‐time exploration of the electrochemical behavior for hetrocharge +1,0 redox couple in presence of supporting electrolyte on a non‐parallel 2D microdisk. Impedance spectra were calculated for the electrochemical reaction","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"11 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Voltammetric methods hold promise for the rapid and sensitive quantification of melatonin. This study reports the direct electrochemical quantification of melatonin using carbon nanotube (CNT) fiber cross‐sections as microelectrodes. Six identical highly densified CNT fiber cross‐sections were employed to quantify melatonin in the range of 0.05–100 µM. The limit of detection and quantification were 10 and 35 nM, respectively, with a sensitivity of 0.1322 nA/µM. Interference studies with uric acid, hypoxanthine, and ascorbic acid demonstrate its performance. Real‐world application was highlighted by measuring melatonin in food, pharmaceutical, and human urine samples.
{"title":"Carbon‐nanotube microelectrodes for electrochemical determination of melatonin","authors":"Neeraj Kumar, Nilni Weerawarna, Noe Alvarez","doi":"10.1002/elan.202400191","DOIUrl":"https://doi.org/10.1002/elan.202400191","url":null,"abstract":"Voltammetric methods hold promise for the rapid and sensitive quantification of melatonin. This study reports the direct electrochemical quantification of melatonin using carbon nanotube (CNT) fiber cross‐sections as microelectrodes. Six identical highly densified CNT fiber cross‐sections were employed to quantify melatonin in the range of 0.05–100 µM. The limit of detection and quantification were 10 and 35 nM, respectively, with a sensitivity of 0.1322 nA/µM. Interference studies with uric acid, hypoxanthine, and ascorbic acid demonstrate its performance. Real‐world application was highlighted by measuring melatonin in food, pharmaceutical, and human urine samples.","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"2 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ahmed Bakr, Emad F. Newair, Mohamed Isamel, Mohamed Khairy
NA
NA
{"title":"A cost‐effective electrochemical sensor using a disposable graphite pencil electrode for sensitive quantification of phenolic antioxidants in human plasma and food samples","authors":"Ahmed Bakr, Emad F. Newair, Mohamed Isamel, Mohamed Khairy","doi":"10.1002/elan.202400103","DOIUrl":"https://doi.org/10.1002/elan.202400103","url":null,"abstract":"NA","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"117 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
José Eudes Oliveira, Alex. P. Araújo, José G.S. Neto, João Paulo B. de Almeida, Eric de Souza Gil, Vagner B. dos Santos, SEVERINO CARLOS BEZERRA DE OLIVEIRA
NA
NA
{"title":"ELECTROCHEMICAL OXIDATION AND DETERMINATION OF 3‐METHYLADENINE AT GLASSY CARBON ELECTRODE","authors":"José Eudes Oliveira, Alex. P. Araújo, José G.S. Neto, João Paulo B. de Almeida, Eric de Souza Gil, Vagner B. dos Santos, SEVERINO CARLOS BEZERRA DE OLIVEIRA","doi":"10.1002/elan.202400149","DOIUrl":"https://doi.org/10.1002/elan.202400149","url":null,"abstract":"NA","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"2 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ofloxacin (OFL) has antibacterial and anti‐inflammatory effects on respiratory tract infection, skin soft tissue infection and urogenital tract infection caused by sensitive bacteria. In this study, an electrochemical sensor on account of glassy carbon electrode (GCE) and anthraquinone (AQ)/Vulcan XC‐72 (C) composite was prosperity prepared for the determination of ofloxacin (OFL) drug. The morphology and structure of C/20%AQ composites were characterized by SEM. The electrochemical behavior of OFL on the C/20%AQ/GCE sensor was tested using differential pulse voltammetry (DPV) and cyclic voltammetry (CV). The consequences indicate that the linear response of the sensor to OFL
{"title":"Anthraquinone/activated carbon electrochemical sensor and its application in ofloxacin analysis","authors":"Cailing Zhong, Yuwen Chen, Yixuan Zheng, Qifeng Tian, Yichang Chen, Mingjiang Xie, Zhengfang Tian","doi":"10.1002/elan.202400216","DOIUrl":"https://doi.org/10.1002/elan.202400216","url":null,"abstract":"Ofloxacin (OFL) has antibacterial and anti‐inflammatory effects on respiratory tract infection, skin soft tissue infection and urogenital tract infection caused by sensitive bacteria. In this study, an electrochemical sensor on account of glassy carbon electrode (GCE) and anthraquinone (AQ)/Vulcan XC‐72 (C) composite was prosperity prepared for the determination of ofloxacin (OFL) drug. The morphology and structure of C/20%AQ composites were characterized by SEM. The electrochemical behavior of OFL on the C/20%AQ/GCE sensor was tested using differential pulse voltammetry (DPV) and cyclic voltammetry (CV). The consequences indicate that the linear response of the sensor to OFL","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"59 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kristen Alanis, Savannah A. Silva, Siddharth Singh, Kabin Lin, Tilman Schäffer, Ovuokenye Omadoko, John T. Fourkas, Lane. A. Baker, Zuzanna S. Siwy
NA
NA
{"title":"Chiral Electrokinetic Phenomena in Single Nanopores","authors":"Kristen Alanis, Savannah A. Silva, Siddharth Singh, Kabin Lin, Tilman Schäffer, Ovuokenye Omadoko, John T. Fourkas, Lane. A. Baker, Zuzanna S. Siwy","doi":"10.1002/elan.202400172","DOIUrl":"https://doi.org/10.1002/elan.202400172","url":null,"abstract":"NA","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"9 1","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cover picture provided by Dr. Elena Benito-Peña and Dr. Susana Campuzano. Electroanalysis covers all branches of electroanalytical chemistry, including both fundamental and application papers as well as reviews dealing with analytical voltammetry, potentiometry, new electrochemical sensors and detection schemes, nanoscale electrochemistry, advanced electromaterials, nanobioelectronics, point-of-care diagnostics, wearable sensors, and practical applications.
封面图片由 Elena Benito-Peña 博士和 Susana Campuzano 博士提供。电分析》涵盖电分析化学的所有分支，包括基础和应用论文，以及涉及分析伏安法、电位计、新型电化学传感器和检测方案、纳米级电化学、先进电材料、纳米生物电子学、护理点诊断、可穿戴传感器和实际应用的综述。
{"title":"Cover Picture: (Electroanalysis 8/2024)","authors":"","doi":"10.1002/elan.202480801","DOIUrl":"https://doi.org/10.1002/elan.202480801","url":null,"abstract":"<p>Cover picture provided by Dr. Elena Benito-Peña and Dr. Susana Campuzano. <i>Electroanalysis</i> covers all branches of electroanalytical chemistry, including both fundamental and application papers as well as reviews dealing with analytical voltammetry, potentiometry, new electrochemical sensors and detection schemes, nanoscale electrochemistry, advanced electromaterials, nanobioelectronics, point-of-care diagnostics, wearable sensors, and practical applications.\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":162,"journal":{"name":"Electroanalysis","volume":"36 8","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/elan.202480801","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141980173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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