期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 -, 期 -, 页码 -出版社
SPRINGER
DOI: 10.1007/s11664-021-08985-7
关键词
Ag/ZnO hierarchical flowers; photocatalysis; radical scavengers; photostability; reusability
资金
- Faculty of Science Research Fund, Faulty of Science, Prince of Songkla University, Songkhla, Thailand [1-2562-02-014]
- Program Management Unit for Human Resources & Institutional Development, Research and Innovation, Office of National Higher Education Science Research and Innovation Policy Council (NXPO) [B16F640001]
Ag/ZnO heterostructure nanocomposites were synthesized successfully in surfactant-free solutions. These samples exhibited higher photocatalytic degradation efficiency compared to pure ZnO flowers due to efficient separation and diffusion of photogenerated charge carriers through the Ag/ZnO Schottky interface.
Ag/ZnO heterostructure nanocomposites containing different amounts of Ag were successfully synthesized in surfactant-free solutions by a sonochemical deposition. The samples were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), x-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR) spectroscopy and Raman spectroscopy. The results show that all heterostructure samples were composed of metallic Ag nanoparticles supported on top of nanoplate petals of hierarchical ZnO flowers. The photocatalytic properties of the samples were also evaluated through photodegradation of methylene blue (MB) and methyl orange (MO) as cationic and anionic model dyes under UV light irradiation. The photodegradation of MB and MO solutions containing Ag/ZnO heterostructure nanocomposites was higher than that of MB and MO solutions containing pure ZnO flowers because of the efficient separation and diffusion of photogenerated charge carriers through Ag/ZnO Schottky interface. Active species for MB and MO photodegradation were also investigated in this research. [GRAPHICS] .
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