Article
Chemistry, Analytical
Theophile Niyitanga, Aarti Pathak, Archana Chaudhary, Rais Ahmad Khan, Haekyoung Kim
Summary: In this study, a MoS2/S@g-CN-modified glassy carbon electrode was developed for the electrochemical detection of L-tryptophan. The synthesized composite exhibited excellent physical and chemical properties, and the modified electrode showed a rational limit of detection and high selectivity for L-tryptophan detection.
Article
Chemistry, Physical
Nozikumbuzo Anati Vitshima, Bongiwe Silwana, Ncediwe Tsolekile, Mangaka C. Matoetoe
Summary: Ternary I-III-VI quantum dots have attracted attention in various fields due to their lower toxicities, greener synthetic methods, and tunable optoelectronic properties. Water-soluble AgInS core QDs and AgInS/ZnS core/shell QDs were synthesized using an eco-friendly hydrothermal method in this study. The electrochemical properties of the QDs were evaluated using cyclic voltammetry and differential pulse voltammetry.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
S. Keerthana, A. Rajapriya, S. Amirthapandian, C. Viswanathan, N. Ponpandian
Summary: The study introduces a hydrothermally prepared WS2/rGO nanocomposite for selective detection of Mesalazine. The electrode exhibits a low detection limit, good sensitivity, and anti-interference capability, as well as remarkable repeatability, reproducibility, and stability. Experimental results demonstrate excellent recovery rates of Mesalazine in analytical samples.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Engineering, Electrical & Electronic
Anoop Singh, Asha Sharma, Ashok K. Sundramoorthy, Sandeep Arya
Summary: Human sweat is a biomarker-rich fluid that can provide important medical data and be used for the development of sweat-based point-of-care health management devices. This article presents an experiment on detecting alcohol concentration in sweat using a synthesized electrode and electrochemical sensing technology.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Minwoo Kim, Joohyung Park, Hyunjun Park, Wonjun Jo, Wonseok Lee, Jinsung Park
Summary: In this study, Nafion-blanketed bismuth nanoplates were developed for the ultrasensitive detection of heavy metals in water. The Nafion-blanketing method selectively adsorbs cadmium and lead ions. The ecofriendly bismuth nanoplates were synthesized using ultrasonic energy and used as electrochemical sensors due to their high affinity toward heavy metal ions. The Nafion-blanketed bismuth nanoplates exhibited outstanding sensing performance in real samples such as tap water and effluent, with detection limits of 0.376 nM for Cd2+ and 0.178 nM for Pb2+.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Electrochemistry
Pantipa Sawatmuenwai, Pachanuporn Sunon, Kamonwad Ngamchuea
Summary: A rapid and straightforward electrochemical sensor was developed for the detection of Cu2O nanoparticles under neutral conditions using a semipermeable Nafion membrane. The sensor overcomes the challenges of quantitative and on-site analysis of Cu2O nanoparticles at ultra-low concentrations. The enhanced electroreduction of Cu2O nanoparticles is achieved through improved neutralization of generated OH. ions facilitated by Nafion. The sensor exhibits a linear detection range of 0.00-0.20 μg and 0.20-2.0 μg of Cu2O, with sensitivities of 107 ± 3 μA μg-1 and 23 ± 3 μA μg-1, respectively. The detection limit (3SB/m) is 0.23 ng. The sensor demonstrates good reproducibility with a relative standard deviation below 5% and is effective in detecting Cu2O nanoparticles in various water samples.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Biochemistry & Molecular Biology
Pengli Li, Lisha Mei, Hongling Li, Chenglin Hong
Summary: In this work, a dual-mode immunosensor using Cu-doped Mo2C as an enhancer was fabricated for accurate detection of carcinoembryonic antigen (CEA). The immunsosensor showed improved sensitivity in chronoamperometry (CA) detection due to the strong different pulse voltammetry (DPV) signal of Cu-doped Mo2C. Additionally, Ti3C2 Mxenes were utilized as a matrix to promote electron transfer and load a large number of AuNPs, which also immobilized CEA-Ab1 through Au-N bonds. The developed immunosensor achieved dual-signal detection of CEA with satisfactory detection ranges and low limits of detection.
BIOELECTROCHEMISTRY
(2023)
Article
Chemistry, Analytical
Ummama Saeed, Batool Fatima, Dilshad Hussain, Muhammad Imran, Maryam Jamil, Muhammad Naeem Ashiq, Muhammad Najam-ul-Haq
Summary: Uric acid metabolism is associated with diseases such as acute myeloid leukemia. Electrochemical sensing is a specific, rapid, automatic, and economical method for uric acid analysis. This study developed a Ce-MOF sensor for uric acid determination, showing good linearity and detection limit.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Analytical
Giada Marchi, Viviana Mulloni, Fabio Acerbi, Massimo Donelli, Leandro Lorenzelli
Summary: Chipless radio-frequency identification (RFID) sensors are not widely used due to their limited sensitivity compared to mature sensing technologies. However, there is little research on the relationship between the performance of chipless or microwave sensors and the materials used to fabricate them. In this study, we simulate the impact of substrate materials on the performance of a chipless RFID sensor for humidity detection. The dielectric parameters of the substrate material play a crucial role in maximizing sensor performance, especially in relation to the desired application and the effective dielectric properties of the sensitive material used.
Article
Chemistry, Physical
Izabela Bargiel, Joanna Smajdor, Anna Gorska, Beata Paczosa-Bator, Robert Piech
Summary: The newly developed voltametric method for highly sensitive propranolol determination showed good linearity and detection limit in experiments, high recovery rates in real samples, and good signal repeatability.
Article
Chemistry, Analytical
Jian Huang, Guolin Yuan, Dongliang Cheng, Fei Xie, Xianru Xia, Xiandong Li, He An, Chunyan Peng
Summary: This study develops an immunosensor using a nanocomposite of polyaniline (PANI) and MXene-Nafion for the sensitive detection of soluble suppression of tumorigenicity 2 (sST2). The immunosensor shows high sensitivity and excellent specificity, and is able to differentiate between serum of healthy people and coronary heart disease (CHD) patients.
ANALYTICAL LETTERS
(2023)
Article
Chemistry, Analytical
Yuliang Zhao, Hongyu Zhang, Yang Li, Xiaoai Wang, Liang Zhao, Jianghong Xu, Zhikun Zhan, Guanglie Zhang, Wen Jung Li
Summary: An electrochemical HbA1c sensor with high sensitivity and good specificity is proposed, which is based on the electrochemical immune principle. The sensor's properties were characterized and analyzed, and the experimental results demonstrated its satisfactory performance in terms of detection limit, sensitivity, repeatability, stability, and anti-interference capabilities.
Article
Engineering, Electrical & Electronic
Keng-Yi Tsai, Hao-Fang Peng, Jian-Jang Huang
Summary: In this study, a new biosensing setup is proposed to address stability issues in electrochemical biosensors. By integrating a thin-film transistor and a constant current source, the proposed device effectively mitigates current fluctuations during detection, resulting in improved sensitivity and lower limit of detection.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Engineering, Electrical & Electronic
Ummama Saeed, Batool Fatima, Dilshad Hussain, Shan E. Zahra Jawad, Muhammad Imran, Muhammad Najam-ul-Haq
Summary: Prostate cancer is a leading cause of mortality, and the PSA test has limitations in its reliability. This study shows that electrochemical sensing using lanthanum tungstate nanoflakes can enhance the accuracy of prostate cancer detection by detecting leucine and valine, which are potential diagnostic biomarkers for prostate cancer.
IEEE SENSORS JOURNAL
(2023)
Review
Electrochemistry
William R. Heineman, Peter T. Kissinger, Kenneth R. Wehmeyer
Summary: The field of voltammetric electroanalytical chemistry has undergone significant advancements over the past century, from the serendipitous discovery of polarography to the development of miniature biosensors today. Through important technological improvements and developments, electrochemical methods have seen drastic enhancements in detectable concentration and amount, selectivity, ease of use, and breadth of application.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)