Enhanced photoelectrochemical properties of TiO2 nanorods decorated with Ag–Zn bimetallic nanoparticles

IF 3.2 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of the Indian Chemical Society Pub Date : 2025-04-09 DOI:10.1016/j.jics.2025.101708

Oluwaseun Adedokun , Abeeb O. Muraina , Olayinka J. Oyewole , Shweta Vyas , Mohamed M. Ibrahim , Gaber A.M. Mersal , Gbemiga M. Lana , Oluwatosin S. Obaseki , Fong K. Yam

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Abstract

TiO₂ nanorods, a promising photocatalyst, suffer from insufficient visible light absorption and rapid charge recombination. This study addresses these limitations by decorating TiO₂ nanorods with Ag–Zn bimetallic nanoparticles. Characterization techniques, including FE-SEM, AFM, XRD, EDX, and UV–vis spectroscopy, established the effective synthesis of the nanostructures and the incorporation of the bimetallic nanoparticles. The introduction of Ag–Zn nanoparticles significantly enhanced absorption of light in visible spectrum, leading to a lessened bandgap from 3.04 eV to 2.72 eV. Photoelectrochemical measurements demonstrated a substantial improvement in photocurrent density, reaching a maximum of 0.385 mA/cm² at 1.2 V vs Ag/AgCl for Zn@TiO₂, compared to 0.033 mA/cm² for undecorated TiO₂. These findings highlight how well the suggested strategy in improving the photoelectrochemical performance of TiO₂ nanorods, paving the way for advanced solar energy conversion applications.

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二氧化钛纳米棒是一种前景广阔的光催化剂，但却存在可见光吸收不足和电荷快速重组的问题。本研究通过用 Ag-Zn 双金属纳米粒子装饰 TiO2 纳米棒，解决了这些局限性。包括 FE-SEM、AFM、XRD、EDX 和 UV-vis 光谱在内的表征技术证实了纳米结构的有效合成和双金属纳米粒子的加入。Ag-Zn 纳米粒子的引入大大增强了对可见光谱光的吸收，使带隙从 3.04 eV 减小到 2.72 eV。光电化学测量结果表明，Zn@TiO2 的光电流密度有了大幅提高，在 1.2 V 对 Ag/AgCl 电压下，Zn@TiO2 的光电流密度最大可达 0.385 mA/cm2，而未装饰的 TiO2 的光电流密度仅为 0.033 mA/cm2。这些发现凸显了所建议的策略在改善 TiO2 纳米棒的光电化学性能方面的效果，为先进的太阳能转换应用铺平了道路。

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来源期刊

Journal of the Indian Chemical Society 化学-化学综合

CiteScore

3.50

自引率

7.70%

发文量

492

审稿时长

3-8 weeks

期刊介绍： The Journal of the Indian Chemical Society publishes original, fundamental, theorical, experimental research work of highest quality in all areas of chemistry, biochemistry, medicinal chemistry, electrochemistry, agrochemistry, chemical engineering and technology, food chemistry, environmental chemistry, etc.