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- Title
Synthesis and Characterization of Broccoli-like Ag/Cu 2 O Nanostructures on ZnO Nanowires Using the Plasma–Liquid Interaction Method.
- Authors
Thu, Phung Thi; Bach, Ta Ngoc; Phong, Le Thi Hong; Tung, Do Hoang; Ky, Vu Hong; Tung, Do Khanh; Lam, Vu Dinh; Manh, Do Hung; Dan, Nguyen Huy; Anh, Trinh Xuan; Le, Ngo Thi Hong
- 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.
- Subjects
SURFACE plasmon resonance; NANOWIRES; COPPER; NANOSTRUCTURES; ZINC oxide
- Publication
Inorganics, 2024, Vol 12, Issue 3, p80
- ISSN
2304-6740
- Publication type
Article
- DOI
10.3390/inorganics12030080