Bismuth doped spinel CoCr2O4 nanocrystals for dual application on supercapacitor and dopamine detection

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-04-24 DOI:10.1016/j.mseb.2025.118346

Nandini Robin Nadar , J. Deepak , S.C. Sharma , B.R. Radha Krushna , Priya Josson Akkara , K. Ponnazhagan , Samir Sahu , D Veera Vanitha , D. Sivaganesh , H. Nagabhushana

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Abstract

The increasing demand in applied sciences for the detection of biological molecules such as dopamine (DA), ascorbic acid (AA), and uric acid (UA) drives the need for innovative materials to enhance healthcare diagnostics. This study introduces bismuth-doped CoCr₂O₄ (BCC) nanocrystals, synthesized via a simple combustion method, for electrochemical biosensing and supercapacitor applications. A BCC-modified carbon paste electrode enhances dopamine detection sensitivity by 64 %, achieving a low detection limit of 0.25 µM and excellent selectivity against uric acid, while maintaining 86.87 % stability over 10 cycles. For supercapacitors, BCC nanocomposites demonstrate a high specific capacitance of 309.24F/g (cyclic voltammetry, CV) and 338.88F/g (galvanostatic charge/discharge, GCD), with an energy density of 67.77 Wh/kg and 86.12 % capacity retention after 5000 cycles. These findings highlight BCC’s versatility for both healthcare diagnostics and energy storage.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.