Article
Chemistry, Analytical
Rupali Gupta, Vellaichamy Ganesan, Piyush Kumar Sonkar, Dharmendra Kumar Yadav, Mamta Yadav
Summary: This work presents a simple and sensitive electrochemical method for the reduction of Cr(VI) using phenosafranine (PSF+) integrated sulfonic acid functionalized mesoporous silica microspheres (MS-SO3-) as the electrode material. The synthesized material (PSF+-MS-SO3-) demonstrates excellent electrochemical characteristics for Cr(VI) reduction, including superior electron transfer kinetics and stable electrochemical response. The electrode also shows high selectivity in the presence of interfering ions and is capable of accurately measuring Cr(VI) in spiked water samples with low detection limit and high sensitivity.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Zhang-Jun Ding, Yao Liu, Rohan Weerasooriya, Xing Chen
Summary: The development of rapid methods for in situ chromium determination in natural water is crucial. Researchers fabricated a nanocomposite by impregnating gold nanoparticles onto UiO-66 metal organic frameworks and modifying glassy carbon electrodes (Au/UiO-66/GCE) for the rapid determination of Cr(VI) in water. The Au/UiO-66/GCE showed excellent linearity, sensitivity, and selectivity, making it a promising tool for practical Cr(VI) species determination.
ANALYTICAL LETTERS
(2023)
Article
Chemistry, Analytical
Elena Dorozhko, Anna S. Gashevskay, Elena Korotkova, Jiri Barek, Vlastimil Vyskocil, Sergei A. Eremin, Evgeny Galunin, Muhammad Saqib
Summary: This study synthesized a hapten-protein conjugate with copper nanoparticles (Hap-Car-BSA@CuNPs) for the determination of carbaryl, and successfully developed a novel method for monitoring carbaryl residues in flour samples using an electrochemical immunosensor. The detection range was 0.8-32.3 μg/kg with a limit of detection of 0.08 μg/kg.
Article
Chemistry, Analytical
K. B. Chandrakala, Giddaerappa, K. R. Venugopala Reddy, K. H. Shivaprasad
Summary: A composite of rGO and non-precious metal-based macrocycle CoTATPc is synthesized and used as a catalyst for oxygen evolution reaction. The composite exhibits excellent catalytic performance with lower overpotential due to its unique porous structure.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Haotian Chen, Enno Katelhon, Richard G. Compton
Summary: The study introduces a discretization-free approach utilizing PINNs for simulating cyclic voltammetry, demonstrating accurate results under different boundary conditions. The findings suggest that PINNs can serve as an efficient tool for solving higher dimensional problems, offering a potentially quicker and simpler alternative to existing methods for voltammetric problems.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Polymer Science
Amjad E. Alsafrani, Waheed A. Adeosun, Hadi M. Marwani, Imran Khan, Mohammad Jawaid, Abdullah M. Asiri, Anish Khan
Summary: A new class of conductive metal-organic framework nanocomposite was successfully utilized for the detection of zinc ions, showing good stability and high sensitivity in the sensor design.
Article
Engineering, Environmental
Xing Chen, Xu-Xu Ke, Yao Liu, Rohan Weerasooriya, Heng Li, Yu-Cheng Wu
Summary: Chromium undergoes redox speciation easily, with the Cr(VI) oxidation state being common and mobile in the environment. A new method using Au/mpg-C3N4 nanocomposites was developed for accurate detection of Cr(VI), with excellent sensitivity and detection limit. The nanocomposites consist of well-dispersed gold nanoparticles with an average diameter of 50 nm decorating the surface of mpg-C3N4.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Electrochemistry
J. Chavez-Lara, M. Galicia, K. Carrasco-Urrutia, J. Torres-Perez
Summary: A glassy carbon electrode was modified with a scaffold of gold nanoparticles, multiwalled carbon nanotubes, and chitosan for detecting hexavalent chromium in aqueous solutions. The modification steps were characterized using cyclic voltammetry and electrochemical impedance spectroscopy. The scaffold exhibited strong interfacial adhesion and selectively coordinated and preconcentrated chromate ions for detection. The nanostructured electrochemical sensor coupled with differential pulse voltammetry showed high sensitivity, selectivity, precision, accuracy, and rapid trace determination of hexavalent chromium ion.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Amjad E. Alsafrani, Waheed A. Adeosun, Raja Saad Alruwais, Hadi M. Marwani, Abdullah M. Asiri, Imran Khan, Anish Khan
Summary: A PANI@Y(III)PO4 nanocomposite was synthesized via sol-gel method and used as a modifier for a glassy carbon electrode, showing excellent performance in electrochemical sensing.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Analytical
Ashutosh Kumar, Buddhadev Purohit, Uday Pratap Azad, Mohammad Tavakkoli Yaraki, Daphika S. Dkhar, Yen Nee Tan, Ananya Srivastava, Pranjal Chandra
Summary: A nanosensor composed of gold nanostars-graphitic carbon nitride nanocomposite on a glassy carbon electrode was developed for the detection of serotonin in body fluids. The nanocomposite and sensing platform were characterized using various techniques including UV-visible spectroscopy, transmission electron microscopy, energy dispersive X-ray photoelectron spectroscopy, and electrochemical techniques. The sensor exhibited a linear dynamic range from 5 x 10(-7) to 1 x 10(-3) M with a limit of detection of 15.1 nM and demonstrated the ability to detect serotonin in urine and blood serum. Interferences and shelf-life of the sensor were evaluated.
Article
Polymer Science
Anish Khan, Aftab Aslam Parwaz Khan, Hadi M. Marwani, Maha Moteb Alotaibi, Abdullah M. Asiri, Ayyar Manikandan, Suchart Siengchin, Sanjay Mavinkere Rangappa
Summary: A glucose sensor based on polyaniline-bimetallic oxide was developed in this study, which showed high sensitivity and stability in detecting and monitoring glucose concentration. This sensitive glucose monitoring system is highly important for protecting human health and ensuring safety.
Article
Chemistry, Analytical
Varuna Watwe, Preeti Kulkarni
Summary: The study presents an effective electrochemical technique using a gold electrode for monitoring Cr(VI) in wastewaters. The technique allows real-time monitoring and quantitative detection of Cr(VI) from synthetic samples, demonstrating its potential for environmental applications. Experimental data indicate that the technique can be effectively applied for Cr(VI) analysis in wastewaters.
JOURNAL OF ANALYTICAL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Joao P. J. de Oliveira, Carlos T. Hiranobe, Giovanni B. Torres, Renivaldo J. dos Santos, Leonardo L. Paim
Summary: In this study, a successful determination of Cr(VI) in tanned leather residues was achieved using GPEs/nsRGO electrodes with differential pulse voltammetry. The modified composite electrodes exhibited good reproducibility and selectivity, and the method was validated in real samples.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Energy & Fuels
Taghazal Zahra, Khuram Shahzad Ahmad, Camila Zequine, Ram Gupta, Andrew Thomas, Mohammad Azad Malik, Sadia Iram, Daoud Ali
Summary: Semiconducting metal oxide nanostructures, such as Zirconia and palladium oxide nanocomposites, show potential for energy applications like photovoltaic devices due to their direct band gaps and ease of synthesis through biomimetic approaches.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Metallurgy & Metallurgical Engineering
Sanghee Jeon, Sharrydon Bright, Ilhwan Park, Carlito Baltazar Tabelin, Mayumi Ito, Naoki Hiroyoshi
Summary: The study presents an efficient method for recovering Au(I) ions from thiosulfate medium based on the galvanic interactions between aluminum (Al) and activated carbon (AC). The results showed that the Al-AC mixture can achieve over 99% Au recovery. Activated carbon (AC) plays a critical role as a reduction mediator in Au recovery, facilitating electron transfer between Al and Au ions. Scanning electron microscopy and electrochemical experiments confirmed the mechanism of Au recovery by Al-AC in thiosulfate medium.
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)