Article
Chemistry, Inorganic & Nuclear
K. Abhayashri Kamath, J. G. Manjunatha, T. Girish, Mika Sillanpaa, M. Ammar, Munirah D. Albaqami
Summary: This study presents a sensitive electrochemical analysis of riboflavin using a modified electrode. The modified electrode showed excellent sensitivity and stability, and was capable of quantitative and qualitative analysis of riboflavin in medicinal samples.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Parisa Karami-Kolmoti, Hadi Beitollahi, Sina Modiri
Summary: This study utilized manganese dioxide nanorods/graphene oxide nanocomposite (MnO2 NRs/GO) to modify a glassy carbon electrode (GCE), creating a modified electrode (MnO2 NRs/GO/GCE) that serves as an electrochemical sensor for hydroquinone (HQ) detection in water. Various electrochemical analysis techniques confirmed the improved performance of MnO2 NRs/GO/GCE in terms of higher electron transfer rate and conductivity. The linear relationship between HQ concentration and current response in the range of 0.5 μM to 300.0 μM, with a detection limit of 0.012 μM, along with the selective detection of HQ in the presence of interferent molecules, further validated the efficacy of the modified electrode for HQ determination in water samples.
Article
Chemistry, Multidisciplinary
Ning Ma, Xuan Luo, Weidong Wu, Jiyang Liu
Summary: In this study, an electrochemical immunosensing platform was developed for sensitive detection of C-reactive protein (CRP) in serum by introducing nanochannel arrays and gated electrochemical signals.
Article
Electrochemistry
B. Ranjani, K. Pandian, Subash C. B. Gopinath
Summary: The study involves the preparation of an electrocatalyst by modifying halloysite with hemin for the oxidation reaction of nitrite, resulting in enhanced peak current. Quantitative analysis of trace nitrite levels was achieved using differential pulse voltammetry and amperometry methods, with low detection limits and good repeatability.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Jiafeng Li, Dongdong Chen, Tao Zhang, Guolong Chen
Summary: In this study, nitrogen-doped hollow nanocarbon spheres were prepared by using dopamine as a carbon and nitrogen source, and were utilized to construct a new electrochemical sensor for methotrexate (MTX). The sensor showed excellent sensitivity, a wide linear range, low detection limit, and good reproducibility, stability, and selectivity for MTX detection.
ANALYTICAL METHODS
(2021)
Article
Chemistry, Analytical
Florina Pogacean, Codruta Varodi, Lidia Magerusan, Raluca-Ioana Stefan-van Staden, Stela Pruneanu
Summary: Graphene-modified glassy carbon electrode was successfully prepared through the synthesis of graphene in an electrochemical cell. The electrode exhibited higher oxidation peak and lower potential compared to bare glassy carbon electrode. The graphene-modified electrode showed higher sensitivity and a wide linear range in the electrochemical detection of AZT.
Article
Chemistry, Multidisciplinary
Somayeh Tajik, Hadi Beitollahi, Ho Won Jang, Mohammadreza Shokouhimehr
Summary: This study introduced a novel Pd/GO nanomaterial-modified sensor for detecting the food additive amaranth, showing high sensitivity and detection range.
Article
Chemistry, Analytical
Chunmao Zhu, Qi Wu, Fanshu Yuan, Jie Liu, Dongtian Wang, Qianli Zhang
Summary: A novel electrochemical sensor using MnO2 nanowire modified carbon paper electrode was developed for the sensitive determination of TBBPA. The MnO2 nanowire exhibited excellent sensitivity due to its high specific surface area and good electrical conductivity. The detection sensitivity was further improved by optimizing the electrochemical factors.
Article
Electrochemistry
Om Prakash Bajpai, Zakaria El Koura, Ilaria Pucher, Michele Orlandi, Antonio Miotello
Summary: In this work, commercial porous carbon electrodes were modified by in situ synthesized g-C3N4, which demonstrated improved performance in water splitting configuration by reducing overpotentials. It was also found that the modification did not increase the surface-to-volume ratio of the electrodes.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Thalles Pedrosa Lisboa, Raylla Santos Oliveira, Wallace Burger Verissimo de Oliveira, Cassiano Cunha de Souza, Guilherme Figueira Alves, Maria Auxiliadora Costa Matos, Renato Camargo Matos
Summary: The study presents a simple method for fabricating an electrochemical sensor using 3D-printed conductive carbon black and polylactic acid-based filament (3D-CB/PLA). The sensor was modified with reduced graphene oxide (rGO) and successfully used for monitoring levofloxacin in various samples. The modified sensor showed improved electroanalytical performance and higher sensitivity, making it promising for routine implementation.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Applied
Xiuying Wan, Qian Wang, Xiangxing Guo, Lumei Chen, E. Ting, Hongyuan Zhao
Summary: In this work, a template-free synthesis strategy was proposed to prepare morning glory-like porous carbon nanosheets (MGPCS) with a three-dimensional (3D) interconnected porous carbon structure, which were used to modify a glassy carbon electrode (GCE) for the fabrication of a methyl parathion (MP) electrochemical sensor (MGPCS/GCE). The MGPCS samples were successfully prepared from sodium citrate as the carbon source through high-temperature thermal decomposition and acid treatment, resulting in a 3D interconnected porous carbon structure with good electrical conductivity. The morning glory-like surface morphology increased the specific surface area and adsorption capacity of the sensing electrode, enabling highly sensitive MP detection with good reproducibility, stability, and selectivity. The sensor's practical performance was demonstrated by detecting MP in apple juice and peach juice samples.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yijiong Li, Xiaoguang Yu, Ruiqi Li, Feng Zhao, Guobin Liu, Xin Wang
Summary: A novel label free photoelectrochemical (PEC) sensor based on Bi-CuS/Bi2WO6 has been developed for the detection of Paracetamol, with a linear detection range and a low detection limit.
Bi-CuS/Bi2WO6 material exhibits excellent photoelectrochemical performance and stability, making it a promising candidate for carrying out PEC analysis.
Article
Chemistry, Physical
Sujuan Hu, Qianru Fei, Yajing Li, Baoling Wang, Yingjian Yu
Summary: Utilizing ultrathin 2D Bi2WO6 nanosheets as electrodes for sulfamethoxazole detection demonstrates efficient and renewable photochemical properties.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Mahmoud Amouzadeh Tabrizi, Pablo Acedo
Summary: A novel electrochemical aptasensor was developed for the highly sensitive, selective, and cost-effective determination of CRP, showing superior analytical performance and applicability for CRP detection in human plasma. The proposed RNA aptasensor outperformed previously reported CRP aptasensors.
Article
Engineering, Chemical
S. Nikhil, A. Karthika, P. Suresh, A. Suganthi, M. Rajarajan
Summary: In this study, a catechol (CC) biosensor based on reduced graphene oxide (rGO) decorated beta-cyclodextrin (beta-CD) nanosheet immobilized using nafion (Nf) on modified GCE (glassy carbon electrode) was successfully fabricated. The sensor exhibited excellent electrocatalytic activity, wide linear detection range, high sensitivity, good reproducibility, selectivity, and stability for CC determination.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Gang Qu, Yuxin Zhao, Qiaoli Zhang, Jina Wu, Xiaosen Li, Yang Yang, Shilei Liu
Summary: In this study, magnetic mesoporous materials combined with real-time in situ mass spectrometry were used for the high-throughput detection of hydrolyzed products of organophosphorus nerve agents. The method showed good linearity, low limits of detection and quantification, and high extraction recoveries. The magnetic preparation method used was quick, cost-effective, rugged, and safe. The results demonstrated the potential of this method for rapid and efficient determination of the target analytes in environmental samples.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Anna Hildebrand, Mariam Merchant, Danny O'Hare
Summary: Substandard and falsified artemisinin derivatives in antimalarials have caused significant deaths and economic losses. This study evaluates the feasibility of voltammetric methods for identifying and quantifying artemether. The findings suggest that electrochemical analysis shows promise as a method for artemether identification and quantification.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Marx Osorio Araujo Pereira, Alvaro Ferreira Junior, Edson Silvio Batista Rodrigues, Helena Mulser, Giovanna Nascimento de Mello e Silva, Wallans Torres Pio dos Santos, Eric de Souza Gil
Summary: Brazilian spotted fever (BSF) is a serious and rapidly evolving disease. A new impedimetric immunosensor was developed for rapid diagnosis by measuring specific antibodies in plasma. The sensor demonstrated selectivity and accuracy, and has potential for important applications in diagnostic testing.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Kathrin Schilling, Ronald A. Glabonjat, Olgica Balac, Marta Galvez-Fernandez, Arce Domingo-Relloso, Vesna Slavkovich, Jeff Goldsmith, Miranda R. Jones, Tiffany R. Sanchez, Ana Navas-Acien
Summary: Analysis of trace elements in urine is an important tool for assessing exposures, diagnosing nutritional status, and guiding public health and healthcare intervention. This study provides a sensitive method for analyzing 18 elements in urine samples, using only 100 μL. The results show good accuracy and sensitivity of the method.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Mengya Li, Shijie Liu, Shiliang Guo, Dong Liang, Miaoyun Li, Yaodi Zhu, Lijun Zhao, Jong-Hoon Lee, Gaiming Zhao, Yangyang Ma, Yanxia Liu
Summary: In this study, a magnetic flow device was developed to purify spores in a culture medium system. The device used magnetic nanoparticles to absorb vegetative cells, separating them from the spores. The achieved purity of the collected spores was over 95%. The study also demonstrated a rapid quantitative detection method using Raman spectroscopy.
ANALYTICAL METHODS
(2024)
Article
Chemistry, Analytical
Wanqiong Liu, Zixuan Wu, Jianwei Peng, Zebin Xu, Yong Liang
Summary: Metal-organic frameworks (MOFs) are effective carriers for molecular imprinting, but their poor dispersibility in aqueous solution is a significant drawback. In this study, we have applied amphiphilic block copolymers and molecularly imprinted technology on MOFs to improve the hydrophilicity of molecularly imprinted fluorescent materials.
ANALYTICAL METHODS
(2024)