Revealing Photocatalytic Performance of ZnXCd1-XS Nanoparticles Depending on the Irradiation Wavelength
- Authors
- Pham, Vy Ngoc; Lee, Sangyeob; Lee, Hangil; Kim, Hyun Sung
- Issue Date
- Feb-2023
- Publisher
- AMER CHEMICAL SOC
- Citation
- INORGANIC CHEMISTRY, v.62, no.8, pp 3703 - 3711
- Pages
- 9
- Journal Title
- INORGANIC CHEMISTRY
- Volume
- 62
- Number
- 8
- Start Page
- 3703
- End Page
- 3711
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/152095
- DOI
- 10.1021/acs.inorgchem.3c00124
- ISSN
- 0020-1669
1520-510X
- Abstract
- Photocatalysts are useful for various applications, including the conservation and storage of energy, wastewater treatment, air purification, semiconductors, and production of high-value-added products. Herein, ZnxCd1-xS nanoparticle (NP) photocatalysts with different concentrations of Zn2+ ions (x = 0.0, 0.3, 0.5, or 0.7) were successfully synthesized. The photocatalytic activities of ZnxCd1-xS NPs varied with the irradiation wavelength. X-ray diffraction, high-resolution transmission electron microscopy, energy-dispersive X-ray spectroscopy, and ultraviolet-visible spectroscopy were used to characterize the surface morphology and electronic properties of the ZnxCd1-xS NPs. In addition, in situ X-ray photoelectron spectroscopy was performed to investigate the effect of the concentration of Zn2+ ions on the irradiation wavelength for photocatalytic activity. Furthermore, wavelength dependent photocatalytic degradation (PCD) activity of the ZnxCd1-xS NPs was investigated using biomass-derived 2,5-hydroxymethylfurfural (HMF). We observed that the selective oxidation of HMF using ZnxCd1-xS NPs resulted in the formation of 2,5-furandicarboxylic acid via 5hydroxymethyl-2-furancarboxylic acid or 2,5-diformylfuran. The selective oxidation of HMF was dependent on the irradiation wavelength for PCD. Moreover, the irradiation wavelength for the PCD depended on the concentration of Zn2+ ions in the ZnxCd1-xS NPs.
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