Journal
RSC ADVANCES
Volume 8, Issue 11, Pages 6027-6038Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ra12097d
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Funding
- National Natural Science Foundation of China [21376126, 21776144]
- Natural Science Foundation of Heilongjiang Province, China [B201106]
- Scientific Research of Heilongjiang Province Education Department, China [135209105]
- Government of Heilongjiang Province Postdoctoral Grants, China [LBH-Z11108]
- Postdoctoral Researchers in Heilongjiang Province of China Research Initiation Grant Project [LBH-Q13172]
- Qiqihar University Graduate Education [YJSCX2016-ZD10]
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A series of Ag/ZnO composites were prepared by microwave-assisted hydrothermal synthesis. Their composition, structure, and morphology were well characterized by X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy (UV-vis/DRS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and N-2 adsorption-desorption analyses. The results showed that the microwave-assisted synthesis method did not significantly alter the crystal structure of the composites. However, light absorption by the composite was clearly enhanced, its Brunauer-Emmett-Teller surface area values changed, and excellent surface morphology was observed. Moreover, the Ag/ZnO composite formed via microwave-assisted hydrothermal synthesis exhibited more regular stacking piled into a chrysanthemum-like structure. Under ultraviolet, visible-light, simulated sunlight, and microwave-assisted irradiation, the composite exhibited better photocatalytic properties for the photocatalytic degradation of rhodamine B compared to that of P25 and ZnO. Moreover, the composite was investigated as a catalyst for the degradation of four dyes with different structures under UV conditions, exhibiting good degradation performance. Furthermore, the degradation efficiency did not change significantly after three cycles, indicating a certain degree of stability. In addition, the photocatalytic hydrogen production experiments showed that the nanocomposite Ag/ZnO had some ability to produce photocatalytic hydrogen.
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