Innovative Z-scheme MnV₂O₆/g-C₃N₄ nanocomposite: photocatalytic, electrocatalytic and biosensing properties

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Chemistry and Physics Pub Date : 2024-11-16 DOI:10.1016/j.matchemphys.2024.130159

Muhammad Danish Khan , Masood ul Hassan Farooq , Iqra Fareed , Tahmina Maqsood , Faisal Nawaz , Yahya Sandali , Afrah Alzahrani , Muhammad Tahir , Faheem K. Butt

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Abstract

Herein, we report Z-scheme mediated pn-junction between manganese vanadate and graphitic carbon nitride, highlighting its photocatalytic degradation capabilities, hydrogen and oxygen evolution reactions and electrochemical biosensing efficacy towards ascorbic acid. The material was synthesized using a co-precipitation method followed by annealing and characterized through XRD, FESEM, FTIR, XPS, UV–visible spectroscopy and EIS in conjunction with Mott-Schottky analysis. The heterojunction demonstrates promising results for photocatalytic degradation of organic dyes. This work further discusses the carrier concentration, decay rate, cyclic stability and photocatalytic degradation mechanism. The results for HER and OER indicate the synthesized material's capability for oxygen and hydrogen production at commercial scale, with Tafel slope calculations providing additional insights. Electrochemical biosensing of ascorbic acid reveals that the material can detect low concentrations of ascorbic acid under various parameters. The results indicate that the material is highly suitable for environmental degradation, electrocatalytic production of hydrogen and oxygen and medical diagnostics such as electrochemical biosensing.

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创新性 Z 型 MnV₂O₆/g-C₃N₄ 纳米复合材料：光催化、电催化和生物传感特性

在此，我们报告了钒酸锰和氮化石墨碳之间 Z 型介导的 pn-接合，突出了其光催化降解能力、氢和氧进化反应以及对抗坏血酸的电化学生物传感功效。该材料采用共沉淀法合成，然后进行退火，并通过 XRD、FESEM、FTIR、XPS、紫外-可见光谱和 EIS 以及 Mott-Schottky 分析对其进行了表征。该异质结在光催化降解有机染料方面取得了可喜的成果。这项工作进一步讨论了载流子浓度、衰减率、循环稳定性和光催化降解机制。HER 和 OER 的结果表明，合成材料具有商业规模制氧和制氢的能力，而 Tafel 斜率计算则提供了更多的见解。抗坏血酸的电化学生物传感显示，该材料可以在各种参数下检测低浓度的抗坏血酸。结果表明，该材料非常适合用于环境降解、氢气和氧气的电催化生产以及电化学生物传感等医疗诊断。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.