Synthesis and Characterization of Broccoli-like Ag/Cu2O Nanostructures on ZnO Nanowires Using the Plasma–Liquid Interaction Method

IF 3.1 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Inorganics Pub Date : 2024-03-06 DOI:10.3390/inorganics12030080

P. Thu, Ta Ngoc Bach, L. Phong, Do Hoang Tung, V. H. Ky, Do Khanh Tung, V. D. Lam, D. H. Manh, Nguyen Huy Dan, T. X. Anh, N. T. H. Le

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Abstract

We have designed an excellent visible-light-driven and high-performance photocatalyst with a Ag-Cu2O-ZnO nanowire heterostructure in our work by combining the hydrothermal approach with plasma–liquid technology. The structural and morphological characteristics and optical properties of the samples were evaluated using X-ray diffraction, field-emission scanning electron microscopy, and spectrophotometry, respectively. The results show that the Ag nanoparticles are mainly positioned on the Cu2O nanoclusters compared with the ZnO nanowire surface, forming broccoli-like Ag-Cu2O nanoclusters during the Ar gas plasma treatment process in an aqueous solution. The diameter of the Ag/Cu2O nanoclusters ranges from 150 to 180 nm. The Ag-Cu2O-ZnO nanowires exhibited improved photocatalytic performance, decomposing approximately 98% methyl orange dye in 30 min. This is a consequence of the synergistic interactions between the p-n heterojunction formed at the Cu2O-ZnO interfaces and the localized surface plasmon resonance (LSPR) effect of the Ag nanoparticles, which broaden the visible light absorption range and effectively separate the photogenerated charge carriers.

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利用等离子体-液体相互作用法在氧化锌纳米线上合成类似布洛克利的银/氧化铜纳米结构并确定其特性

我们结合水热法和等离子体-液体技术，设计出了一种具有 Ag-Cu2O-ZnO 纳米线异质结构的优异的可见光驱动型高性能光催化剂。分别采用 X 射线衍射、场发射扫描电子显微镜和分光光度法对样品的结构形态特征和光学性能进行了评价。结果表明，与 ZnO 纳米线表面相比，银纳米颗粒主要分布在 Cu2O 纳米簇上，在水溶液中的氩气等离子体处理过程中形成了锦葵状的 Ag-Cu2O 纳米簇。银/Cu2O 纳米团簇的直径在 150 到 180 nm 之间。Ag-Cu2O-ZnO 纳米线的光催化性能有所提高，在 30 分钟内可分解约 98% 的甲基橙染料。这是 Cu2O-ZnO 界面形成的 p-n 异质结与 Ag 纳米粒子的局部表面等离子体共振（LSPR）效应之间协同作用的结果，后者拓宽了可见光的吸收范围，并有效分离了光生电荷载流子。

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来源期刊

Inorganics Chemistry-Inorganic Chemistry

CiteScore

2.80

自引率

10.30%

发文量

193

审稿时长

6 weeks

期刊介绍： Inorganics is an open access journal that covers all aspects of inorganic chemistry research. Topics include but are not limited to: synthesis and characterization of inorganic compounds, complexes and materials structure and bonding in inorganic molecular and solid state compounds spectroscopic, magnetic, physical and chemical properties of inorganic compounds chemical reactivity, physical properties and applications of inorganic compounds and materials mechanisms of inorganic reactions organometallic compounds inorganic cluster chemistry heterogenous and homogeneous catalytic reactions promoted by inorganic compounds thermodynamics and kinetics of significant new and known inorganic compounds supramolecular systems and coordination polymers bio-inorganic chemistry and applications of inorganic compounds in biological systems and medicine environmental and sustainable energy applications of inorganic compounds and materials MD