Article
Materials Science, Composites
Guangzhen Li, Hua Yuan, Jinjin Mou, Enhao Dai, Huayu Zhang, Zhende Li, Yankun Zhao, Yifeng Dai, Xiaoyan Zhang
Summary: This study focuses on detecting nitrate ions using carbon fiber microelectrodes. A novel copper/carbon nanofibers/carbon fiber microelectrode (Cu/CNFs/CFE) was designed and used for detecting nitrates in a simple, inexpensive approach. The Cu/CNFs/CFE showed increased sensitivity and lower detection limits compared to bare CFE.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Applied
Runqiang Liu, Bo Li, Fang Li, Volodymyr Dubovyk, Yuqi Chang, Dongdong Li, Kunjie Ding, Qiwen Ran, Guifang Wang, Hongyuan Zhao
Summary: In this study, a novel electrochemical sensor based on beta-cyclodextrin functionalized carbon nanosheets@carbon nanotubes was fabricated for the determination of Carbendazim (CBZ). The sensor exhibited a low limit of detection, favorable stability, and reliable reproducibility, making it suitable for accurate detection of CBZ in apple juice.
Article
Electrochemistry
Junhao Chen, Azadeh Nilghaz, Xinyu Chen, Shan Liu, Junfei Tian
Summary: This study presents a novel strategy for fabricating a third-generation glucose sensor on a screen-printed carbon electrode (SPCE). The direct electron transfer (DET) between glucose oxidase (GOx) and SPCE was achieved by immobilizing GOx in poly (3,4-ethylenedioxythiophene) (PEDOT) functionalized electrodes. This strategy eliminates the need for a mediated agent and shows high electrochemical responses of glucose in human blood plasma.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Chiara Abate, Giulia Neri, Angela Scala, Placido Giuseppe Mineo, Enza Fazio, Antonino Mazzaglia, Alex Fragoso, Ottavia Giuffre, Claudia Foti, Anna Piperno
Summary: The study demonstrates the successful electrochemical sensing of Hg(II) in aqueous solution using nanoassembly based on cationic cyclodextrin carbon nanotubes (CNT-CDs) and ferrocenylcarnosine (FcCAR). The CNTs were functionalized with beta-cyclodextrins (CDs) through a click chemistry reaction and subsequent reduction of residual nitrogen groups. The CNT-CDs were cast on screen-printed carbon electrodes (SPCEs) and their electrochemical response was evaluated using cyclic voltammetry (CV). The CNT-CD/FcCAR nanoassembly showed enhanced electroactive properties for Hg(II) detection. The sensor exhibited a linear concentration dependence in the range of 1-100 nM, with a sensitivity of 0.12 muA/nM, a limit of detection of 0.50 nM, and a limit of quantification of 1 nM.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Raissa Ribeiro Lima Machado, Tiago Almeida Silva, Taiza Maria Cardoso dos Reis, Uttandaraman Sundararaj, Mohammad Arjmand, Joao Paulo Santos, Aline Bruna da Silva
Summary: This study investigated the electrochemical properties of carbon paste electrodes (CPE) modified with different types of carbon nanotubes (CNTs). The results showed that modification with carbon nanotubes enhanced the anodic peak currents for the electrodes, with the CPE/N-CNT850 electrode exhibiting the best electrochemical response. Additionally, the CPE/N-CNT850 and CPE/MWCNTCOOH electrodes had larger electroactive areas and higher heterogeneous electron transfer kinetics. Furthermore, the CPE/N-CNT850 and CPE/MWCNTCOOH electrodes showed the best correlation of results when detecting Acetaminophen (AC) using differential pulse voltammetry.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Analytical
A. Kumaravel
Summary: Stable silver nanoparticles with a diameter less than 20 nm were prepared using SDS as a reducing and stabilizing agent. The developed modified electrodes exhibited high catalytic activity towards the reduction of clothianidin. The electrochemical results were validated by comparing them to HPLC results.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Jin Zhu, Yi He, Lijun Luo, Libo Li, Tianyan You
Summary: In this research, an innovative electrochemical sensor was developed for the detection of Diuron pesticide. The sensor showed a wide linear range, low limit of detection, and high sensitivity. It also demonstrated good anti-interference performance, reproducibility, and stability.
Article
Energy & Fuels
Rafael Vicentini, Willian G. Nunes, Lenon H. da Costa, Leonardo M. Da Silva, Bruno Freitas, Aline M. Pascon, Otavio Vilas-Boas, Hudson Zanin
Summary: A novel multi-walled carbon nanotubes and activated carbon composite material was reported as an electrode for electrochemical capacitors, showing low equivalent series resistance and operational stability in aqueous electrolytes. The simple, fast, and low-cost approach resulted in devices with high voltage and specific capacitance, demonstrating good cyclability and potential for environmentally friendly electrolytes.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Engineering, Electrical & Electronic
Manish Rishi, Khairunnisa Amreen, Jaligam Murali Mohan, Arshad Javed, Satish Kumar Dubey, Sanket Goel
Summary: A highly sensitive, specific, and simple method of electrochemical detection of Escherichia coli (E. coli) was demonstrated in this study. The electrochemical system utilized a chemically modified glassy carbon electrode with graphitized mesoporous carbon as the working electrode, achieving interference-free and excellent sensitivity to E. coli detection.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Multidisciplinary
M. Ferreira, S. Guney, I. Kuzniarska-Biernacka, O. S. G. P. Soares, J. L. Figueiredo, M. F. R. Pereira, I. C. Neves, A. M. Fonseca, P. Parpot
Summary: The electrochemical oxidation of diclofenac was studied using various carbon nanotube modified electrodes, showing different conversion rates and mineralization efficiencies in different electrolyte media. The identification and quantification of electrolysis products confirmed the cleavage of aromatic rings during the oxidation process.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Analytical
Sho Narafu, Yoshinori Takashima, Osamu Niwa, Tatsuhiko Yajima, Yuko Ueno
Summary: A monolayer graphene electrode modified with beta-cyclodextrin was prepared, and the effects of the modification on the redox reactions of water-insoluble ferrocene were investigated. The modification significantly increased the peak current of the reduction reaction by forming small water domains and oil-water interfaces on the graphene surface.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Melinda David, Adrian Serban, Teodor Adrian Enache, Monica Florescu
Summary: This study described and compared the performances of commercial screen-printed carbon electrodes with different nanostructured materials for LT4 detection. The presence of carbon nanotubes resulted in the best performance for LT4 detection.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Electrochemistry
Afia Asif, Arto Heiskanen, Jenny Emneus, Stephan Sylvest Keller
Summary: Carbon microelectrodes are widely used in various applications due to their material properties. Optimized fabrication of carbon nanograss electrodes provides high surface area suitable for electrochemical applications such as biosensing or electrochemical monitoring of cells, showing an approximately 2-fold increase in electrochemical signals compared to 2D electrodes.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Radhiahtul Raehan Mustafa, Rashidah Sukor, Shimaa Eissa, Ainaa Najihah Shahrom, Nazamid Saari, Siti Mariam Mohd Nor
Summary: An electrochemical immunosensor was developed for sensitive and rapid detection of mitragynine, utilizing MWCNTs/CS nanocomposite as modifier. The sensor showed higher sensitivity (10-fold) than conventional ELISA, with a limit of detection of 0.018 μg/mL and a limit of quantification of 0.06 μg/mL. Detection in spiked urine samples resulted in good recoveries between 70-110%.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Keerthi Prabhu, Shweta J. J. Malode, Raviraj M. M. Kulkarni, Nagaraj P. P. Shetti
Summary: The electrochemical degradation of 1-naphthaleneacetic acid (1-NAA) using MWNTs and Ca-ZnO nanoparticles embedded in CPEs was studied. The impact of various factors on 1-NAA was investigated by analyzing samples of water, fruits, soil, and vegetables using SWV technique. The sensor displayed exceptional catalytic properties in a pH 3.0 0.2 M PB solution.
NEW JOURNAL OF CHEMISTRY
(2022)
