Surface modification of porous ZnO sheets with Ag and Ag2O nanoparticles for enhanced photoelectrochemical and photocatalytic performance

IF 6.8 3区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Science: Advanced Materials and Devices Pub Date : 2025-10-08 DOI:10.1016/j.jsamd.2025.101020

Yuan-Chang Liang, Ho-Chung Yang, Hao Jung

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Abstract

This study demonstrates significant enhancements in the structural, optical, and photoelectrochemical (PEC) properties of porous ZnO sheet templates via surface modification with metallic silver (Ag) and Ag₂O nanoparticles. Increased sputtering duration boosts nanoparticle coverage, gradually reducing ZnO's visible porosity. X-ray photoelectron spectroscopy confirms the presence of Ag and silver ions (Ag⁺), while surface plasmon resonance (SPR) effects and p-n junctions enhance light absorption and charge separation. Optical and PEC analyses identify ZA150 and ZAO130 as optimally modified samples, achieving improved light harvesting and charge dynamics. ZA150 excels in Rhodamine B degradation due to efficient SPR-assisted charge transfer, while ZAO130 benefits from built-in electric fields at the ZnO/Ag₂O junction. Reactive species trapping highlights hydroxyl and superoxide radicals as the main degradation agents. Overall, the findings underscore the promise of Ag- and Ag₂O-decorated ZnO in solar-driven photocatalysis and offer guidance for tuning surface characteristics to maximize efficiency.

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Ag和Ag2O纳米颗粒对ZnO多孔片表面进行改性，增强其光电化学和光催化性能

该研究表明，通过金属银（Ag）和Ag2O纳米颗粒的表面改性，多孔ZnO片模板的结构、光学和光电化学（PEC）性能得到了显著增强。溅射时间的延长增加了纳米颗粒的覆盖率，逐渐降低了ZnO的可见孔隙率。x射线光电子能谱证实了银和银离子（Ag+）的存在，而表面等离子体共振（SPR）效应和p-n结增强了光吸收和电荷分离。光学和PEC分析确定ZA150和ZAO130为最佳修饰样品，实现了更好的光捕获和电荷动力学。由于高效的spr辅助电荷转移，ZA150在罗丹明B降解方面表现优异，而ZAO130则得益于ZnO/Ag2O结处的内置电场。活性物质捕获强调羟基和超氧自由基是主要的降解剂。总的来说，这些发现强调了Ag-和ag20修饰ZnO在太阳能驱动光催化中的前景，并为调整表面特性以最大化效率提供了指导。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

11.90

自引率

2.50%

发文量

审稿时长

47 days

期刊介绍： In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.