Article
Electrochemistry
Abdelaziz H. Benhawy, Hussein M. Fahmy, Faten A. Nour El Dien, Rasha M. El Nashar
Summary: This study reports the synthesis and optimization of an electrochemical sensor based on gold nanoparticles/conducting poly Congo red dye nanocomposite. The sensor was successfully applied for the detection of the fungicide famoxadone. The modified sensor showed good stability, reproducibility, and selectivity towards famoxadone, and was able to determine the concentration of famoxadone in vegetable and formulation samples accurately.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Dan Cheng, Xiang Liu, Peipei Li, Youyu Zhang, Meiling Liu, Shouzhuo Yao
Summary: In this study, a novel ratiometric electrochemical sensor for uric acid (UA) was developed using Cu2O nanocubes and boron carbide (B4C) as the sensing materials. The sensor detected UA concentration by measuring the ratio between the oxidation peak of UA and the reference peak of Cu2O.
Article
Chemistry, Multidisciplinary
Lokman Liv, Merve Portakal, Meryem Sila Cukur, Beyza Topacli, Berkay Uzun
Summary: In this study, a novel electrocatalytic sensing strategy was developed to detect uric acid in human fluids using a modified electrode. The sensing platform exhibited excellent detection performance, and there was no significant difference in the results between different fluid samples.
Article
Materials Science, Multidisciplinary
Cheng-Hui Shen, Yu-Na Chang, You-Liang Chen, Chung-Wei Kung
Summary: A highly porous and chemically stable metal-organic framework (MOF) with enriched sulfonate groups, SO3-MOF-808, is synthesized and proposed as a porous alternative to Nafion for modulating the selectivity of electrochemical reactions. The use of SO3-MOF-808 thin film as an electrode coating significantly improves the current signal for dopamine oxidation and the selectivity against interfering compounds.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Arpit Goyal, Toshiya Sakata
Summary: Cortisol, a stress biomarker, can be detected using a molecularly imprinted polypyrrole biosensor. The sensor showed specific response to cortisol and can detect its concentration in saliva. This electrochemical approach offers a promising method for point-of-care testing.
Article
Chemistry, Applied
Keyu Ren, Yanan Fan, Guozheng Xing, Mengge Zhai, Jie Sheng, Yishan Song
Summary: A new green composite sponge, ACS-CIT, made of chitosan modified with ammonium ascorbate, was synthesized in just 10 minutes. This sponge exhibited significantly enhanced adsorption performance for CR, with increased adsorption capacities. The adsorption mechanism can be summarized as the generation of more hydrogen bonds, electrostatic attraction, and intra particle diffusion, resulting in a significant increase in its adsorption capacity. The prepared ACS-CIT showed excellent CR removal performance even in the presence of multiple interfering factors coexisting in the simulated wastewater.
CARBOHYDRATE POLYMERS
(2024)
Article
Electrochemistry
Elayappan Tamilalagan, Akilarasan Muthumariappan, Tse-wei Chen, Shen-Ming Chen, Selvarasu Maheshwaran, Po-Jui Huang
Summary: The study presents a LaCoO3 modified electrode as a glucose sensor, exhibiting excellent performance with a wide linear range and low detection limit for glucose sensing.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Hidayet Sariogullari, Ibrahim F. Sengul, Ayse Gul Gurek
Summary: A new range of sandwich type tetra and octa bis-phthalocyanines derived from N-ethylcarbazole and connected with a Lutetium ion were successfully prepared and characterized using various spectroscopic techniques. Electrochemical properties of these bis-phthalocyanines were studied, and modified electrodes were developed for the detection of low concentrations of ascorbic acid, dopamine, and uric acid. The modified electrodes showed high selectivity and sensitivity towards the target analytes, with satisfactory results obtained in the detection of AA, DA, and UA in tap water samples.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Pattan-Siddappa Ganesh, Amit. B. Teradale, Sang-Youn Kim, Hyun-U Ko, Eno E. Ebenso
Summary: A sensitive and simple method for the detection of mesalazine (MSZ) at a polymerized-congo red modified carbon paste working electrode (PCR-CPE) was reported. The PCR-CPE showed good electrochemical sensing behavior for the detection of MSZ and folic acid (FA), even in the presence of interferons. The modified electrode exhibited high sensitivity, long-term stability, and reproducibility.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
You Xue, Yapeng Zheng, Enhui Wang, Tao Yang, Hongyang Wang, Xinmei Hou
Summary: Dopamine, uric acid, and ascorbic acid are biomolecules that play important roles in physiological processes. This study demonstrates that Ti3C2Tx/PtNP modified glassy carbon electrodes show good electrochemical performance for detecting dopamine and uric acid. Additionally, ascorbic acid enhances the detection of dopamine and promotes electrode stability. The findings are significant for the accurate and fast detection of these biomolecules in the healthcare industry.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Biomaterials
Ye Yuan, Changyong Gao, Zhexu Wang, Jianming Fan, Haofei Zhou, Daolin Wang, Chang Zhou, Baohua Zhu, Qiang He
Summary: Janus micromotors powered by enzymes and functionalized with upconversion nanoparticles can efficiently move and detect uric acid in urine, showing promise for multifunctional micro/nanomotors in bioassay and biomedical applications.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Chemistry, Analytical
Ancuta Dinu, Constantin Apetrei
Summary: This study reports the determination of ascorbic acid using platinum-based voltammetric sensors modified with potassium hexacyanoferrate-doped polypyrrole. The modified electrodes showed excellent sensitivity for ascorbic acid detection, with a detection limit of 2.5×10(-7) M. The analyses of pharmaceutical products with different concentrations of ascorbic acid validated the accuracy of the method.
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, Physical
Vrinda S. Punnakkal, E. Anila
Summary: In this study, a simple chemical synthesis method was used to prepare polypyrrole/silver/graphene (Ppy/Ag/Gr) ternary nanocomposites with varying concentrations of graphene. The interaction between polypyrrole, silver, and graphene was studied using XRD, FTIR, and UV-Vis spectroscopies. The results showed that the addition of the optimum concentration of graphene into Ppy/Ag enhanced its photocatalytic property. Furthermore, it was confirmed that the enhancement of photocatalysis in the Ppy/Ag/Gr sample was due to the increased surface area.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Retno Wulandari, Ardi Ardiansyah, Henry Setiyanto, Vienna Saraswaty
Summary: A sensor for the electrochemical detection of uric acid (UA) was developed using hydroxyapatite-derived eggshell biowaste (Hap-Esb). The physicochemical characteristics of Hap-Esb and modified electrodes were analyzed. The electrochemical behavior of modified electrodes (Hap-Esb/ZnONPs/ACE) showed a superior peak current response for UA oxidation compared to Hap-Esb/activated carbon electrode (Hap-Esb/ACE), attributed to the simple immobilization of Hap-Esb on zinc oxide nanoparticle-modified ACE. The UA sensor exhibited a linear range, low detection limit, and excellent stability, outperforming existing Hap-based electrodes.