Article
Chemistry, Physical
Basmah H. Alshammari, Humayra Begum, Fatma A. Ibrahim, Mohamed S. Hamdy, Tahamida A. Oyshi, Nazia Khatun, Mohammad A. Hasnat
Summary: In this study, a noble metal-decorated electrode was used to successfully convert acetic acid into hydrogen gas, showing excellent catalytic performance at a lower potential. This result is of great significance for solving the sustainable production of clean hydrogen.
Article
Electrochemistry
Seyyed Mehdi Khoshfetrat, Mahdi Yari, Parisa Seyed Dorraji, Fahimeh Jalali
Summary: In this study, a binder-free catechol (CC)-immobilized nanoporous GCE was utilized for the electrooxidation of hydrazine (HZ), with extremely low overpotential and fast response time. The synergistic-assisted signal amplification between CC and nanoporous GCE, as well as the high-effective-surface-area of the nanoporous GCE for CC incorporation, enabled highly sensitive detection of HZ with long-term stability. Furthermore, binder-free modification increased the accessibility of HZ to the active surface sites, leading to improved electrode performance.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Aysu Arman, Sener Saglam, Aysem Uzer, Resat Apak
Summary: The study presented a sensitive detection method for nitroaromatic explosives using a GC/MWCNTs/PEI electrode coated with gold nanoparticles. The method successfully detected TNT, DNT, 2,4-DNP, PA, and tetryl in a linear range, with detection limits ranging from 15 μg L-1 to 135 μg L-1. This method was also validated against the reference LC-MS method for analyzing explosives in soil samples.
Article
Green & Sustainable Science & Technology
Xiaotang Xu, Xiaolan Zeng, Cunkuan Zhang, Renli Huang, Wenchuan Ding
Summary: To develop a low cost and high performance electrochemical oxidation system for wastewater treatment, researchers synthesized a carbon composite graphene/biochar (GBC) as particle electrode by decorating biochar with graphene. The GBC particle electrodes demonstrated better electrochemical reaction activity than biochar particle electrodes and achieved 99.48% removal of tetracycline under an input voltage of 10 V. This study proposed a new strategy to develop non-metallic particle electrodes using carbon-based materials for high efficient electrocatalytic oxidation in the electrochemical treatment system.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Electrochemistry
Li Xiang, Hao Li, Zhubin Chen, Jianshe Tang
Summary: In this study, an electrochemical sensor was developed to improve the detection of fenitrothion in the environment. The electrode was modified with NiFe2O4, which exhibited high electrocatalytic activity towards fenitrothion. The sensor showed a wide linear range of detection and a low limit of detection.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
A. Kumaravel, M. Murugananthan
Summary: A novel nanosilver/dodecane modified electrode was developed for the electrochemical sensing of fenitrothion in environmental samples such as potatoes and paddy, showing lower reduction potential and higher sensing current. The electrode demonstrated excellent stability and constant sensitivity over multiple cycles of analysis, with a lower limit of detection compared to other electrodes. The results obtained using the electrochemical approach were in good agreement with those from the HPLC technique. The modified electrode presents a cost-effective alternative for detecting fenitrothion pesticides.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Nanoscience & Nanotechnology
Elisabetta Mazzotta, Tiziano Di Giulio, Valentina Mastronardi, Pier Paolo Pompa, Mauro Moglianetti, Cosimino Malitesta
Summary: Platinum nanoparticles (PtNPs) of size-tunable nature were prepared in an aqueous environment without the use of catalyst-poisoning reagents, exhibiting excellent electrocatalytic properties for the detection of hydrogen peroxide. The nanoparticles were freed from the citrate capping agent by adjusting the pH to basic values, and then deposited on a glassy carbon electrode with high cleanliness and adherence, leading to enhanced electrocatalytic performances. The smaller PtNPs showed higher sensitivity in detecting hydrogen peroxide, with good results in terms of sensitivity, selectivity, repeatability, stability, and tests in real tap water samples.
ACS APPLIED NANO MATERIALS
(2021)
Article
Environmental Sciences
Yu Pu, Fan Zhao, Yini Chen, Xiangyu Lin, Haoran Yin, Xinhua Tang
Summary: In this study, SnO2-Sb2O3/GAC particle electrodes were prepared using the dip-calcination method and were characterized by various techniques. The particle electrodes exhibited high electrocatalytic activity and thermal stability. The effects of various factors on the performance of phenol degradation were investigated, and the results showed significant removal rates of phenol and COD under optimal conditions. Additionally, the novel particle electrodes demonstrated stable and high-efficiency operation for at least 15 cycles, highlighting their robustness and durability.
Article
Chemistry, Analytical
D. Ogonczyk, P. Jankowski
Summary: In this paper, the authors present a method for fabricating gold-plated polycarbonate microchannels by adjusting the sequence of reagent insertion. The resulting gold surface can be used in various applications that combine the advantages of microfluidics, surface chemistry, and electrochemistry. The authors demonstrate the combination of electrochemistry and microfluidics by integrating a gold sensor into the microfluidic system.
Article
Chemistry, Multidisciplinary
Veeramani Mangala Gowri, Ajay Ajith, S. Abraham John
Summary: Researchers have synthesized graphitic carbon nitride (GCN) from various precursors and attached it to electrode substrates after exfoliation under different conditions, leading to inconsistent data on electrochemical properties. This study systematically investigated the morphology, electrochemical impedance, and electrocatalytic activity of GCN modified on GC substrate from different exfoliation times, showing that GCN exfoliated for 120 minutes exhibited the highest electrocatalytic activity.
Article
Chemistry, Physical
Vesna Stankovic, Dragan Manojlovic, Goran M. Roglic, Dmitry S. Tolstoguzov, Dmitry A. Zherebtsov, Daniel A. Uchaev, Viacheslav V. Avdin, Dalibor M. Stankovic
Summary: Nanoparticles of TiO2 with extraordinary properties are suitable for various catalytic and photocatalytic applications. The crystalline phases of TiO2, anatase and rutile, directly affect their catalytic performance. In this study, carbon material enhanced with TiO2 nanoparticles was synthesized and used to construct a modified carbon paste electrode. The influence of TiO2 crystalline phases on the electrocatalytic activity of the modified electrodes was investigated, and the developed electrode was successfully applied for triclosan detection.
Article
Chemistry, Physical
Prottasha Kairy, Md Mosaraf Hossain, M. Azizur R. Khan, Albandary Almahri, Mohammed M. Rahman, Mohammad A. Hasnat
Summary: In this study, a pristine glassy carbon electrode (GCE) was electrochemically activated and used for efficient oxidation of ascorbic acid (AA). The GCE surface was characterized before and after functionalization using electrochemical and X-ray photoelectron spectroscopy (XPS). The oxidized GCE exhibited better electrochemical performance in an alkaline medium and followed 1st order and diffusion-controlled kinetics. The proposed oxidized GCE shows potential for use as an anode in AA fuel cells.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Physical
Bo Song, Zhaoyang Wang, Junfeng Li, Yanan Ma
Summary: A particle electrode was synthesized from kaolin and steel slag, with optimized preparation conditions resulting in significantly improved electrocatalytic activity for degrading methylene blue in a 3D electrochemical oxidation reactor compared to a 2D reactor. The kaolin/steel slag particle electrode also exhibited good cycle performance.
CATALYSIS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Kazuki Uchiyama, Takashi Yamamoto, Yasuaki Einaga
Summary: Silicon carbide (SiC) has excellent properties but lacks sufficient electrical conductivity for electrochemical applications, leading to the exploration of boron-doped SiC (SiC:B). The electrochemical properties of SiC:B were evaluated and found to have reactivity and sensitivity comparable to that of glassy carbon electrodes.
Article
Electrochemistry
Mohammad A. Hasnat, Munira Siddika, S. M. Nizam Uddin, Khalid A. Alamry, Mohammed M. Rahman
Summary: An efficient electrocatalyst for the direct oxidation of ascorbic acid was developed and implemented on an IrOx immobilized glassy carbon electrode. The GC-IrOx electrode showed excellent oxidation performance and good stability, indicating its potential application as an anode in ascorbic acid fuel cells.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)