Eco-friendly synthesis of BiVO4 nanoparticles for efficient photocatalytic degradation and electrochemical sensing

IF 2.6 4区化学 Q3 CHEMISTRY, PHYSICAL

Ionics Pub Date : 2025-06-02 DOI:10.1007/s11581-025-06394-y

Pushpa C. S., Lakshmi Ranganatha V., Soundarya T. L., Pramila S., Sangamesha M. A., Mallikarjunaswamy C.

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引用次数: 0

Abstract

The development of high-performance photocatalysts and electrocatalysts has rapidly emerged as one of the most dynamic and cutting-edge areas of scientific research today. This study introduces a novel, simple, eco-friendly approach to synthesize Bismuth Vanadate (BiVO₄) nanoparticles (NPs) using Glossocardia bosvallia leaf extract as a natural fuel source for the first time. The fuel plays a crucial role in controlling the size of the NPs, with Scherrer’s analysis revealing an average Np’s (BVG3) size of 20 nm. These NPs exhibited a band gap of approximately 2.8 eV, indicating their activity under visible light. When exposed to visible light, the crystalline surface and optimal bandgap of the BiVO₄ NPs facilitated the effective degradation of methylene blue (MB). The degradation efficiency of MB dye using BiVO₄ NPs reached up to 98.2% within 180 minutes. Furthermore, recycling experiments demonstrated the excellent photostability of BiVO₄ NPs. Additionally, BiVO₄ NPs exhibited remarkable bio-analyte sensing capabilities by showing distinct oxidation and reduction peaks towards paracetamol, and they also demonstrated a good response in linear sweep voltammetry studies. Electrochemical impedance spectroscopy (EIS) provided valuable insights into the ionic conductivity of a substance and the capacitive behaviour of the BiVO₄-modified electrode.

Graphical abstract

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用于高效光催化降解和电化学传感的BiVO4纳米颗粒的环保合成

高性能光催化剂和电催化剂的开发已迅速成为当今最具活力和最前沿的科学研究领域之一。本研究首次提出了一种新颖、简单、环保的方法，利用牛耳叶提取物作为天然燃料来源合成钒酸铋纳米颗粒（BiVO4）。燃料在控制纳米粒子的大小方面起着至关重要的作用，Scherrer的分析显示，纳米粒子（BVG3）的平均尺寸为20纳米。这些NPs表现出约2.8 eV的带隙，表明它们在可见光下的活性。当暴露在可见光下时，BiVO4 NPs的晶体表面和最佳带隙有利于亚甲基蓝（MB）的有效降解。BiVO4 NPs在180分钟内对MB染料的降解效率可达98.2%。此外，回收实验证明了BiVO4 NPs具有优异的光稳定性。此外，BiVO4 NPs对扑热息痛表现出明显的氧化和还原峰，表现出显著的生物分析物传感能力，并且在线性扫描伏安法研究中也表现出良好的响应。电化学阻抗谱（EIS）为物质的离子电导率和bivo4修饰电极的电容行为提供了有价值的见解。图形抽象

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来源期刊

Ionics 化学-电化学

CiteScore

5.30

自引率

7.10%

发文量

427

审稿时长

2.2 months

期刊介绍： Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.