Chemical Approach Based ZnS-ZnO Nanocomposite Synthesis and Assessment of their Structural, Morphological and Photocatalytic Properties
| Authors | Parita Basnet, Dhrubajyoti Samanta, Somenath Chatterjee |
| Affiliations |
Centre for Materials Science and Nanotechnology, Sikkim Manipal Institute of Technology, Sikkim Manipal University, Sikkim, India |
| Е-mail | paritapyangs.pb@gmail.com |
| Issue | Volume 13, Year 2021, Number 1 |
| Dates | Received 12 January 2021; revised manuscript received 16 February 2021; published online 25 February 2021 |
| Citation | Parita Basnet, Dhrubajyoti Samanta, Somenath Chatterjee, J. Nano- Electron. Phys. 13 No 1, 01025 (2021) |
| DOI | https://doi.org/10.21272/jnep.13(1).01025 |
| PACS Number(s) | 61.72.Uj, 71.55.Eq, 78.40.Fy, 82.30.Lp |
| Keywords | ZnO nanoparticles, ZnS nanoparticles (2) , ZnS-ZnO nanocomposite, XPS (4) , Photocatalysis (4) . |
| Annotation |
This work describes a comparative assessment between zinc oxide (ZnO) nanoparticles (NP), zinc sulfide (ZnS) NP and ZnS-ZnO nanocomposite (NC). A chemical non-aqueous method was chosen for materials synthesis. From XRD spectra, the crystalline phases and phase purity of the samples were confirmed. The average crystallite sizes were calculated as 69 nm, 5 nm and 10 nm for ZnO NP, ZnS NP and ZnS-ZnO NC, respectively, indicating a relatively pronounced growth and coarsening processes in ZnO NP. The lowering of band gap energy was verified through optical absorption spectra of ZnS-ZnO NC. Morphological investigation revealed that ZnO consisted of plate-like structures, ZnS comprised of agglomerated spheres while ZnS-ZnO NC exhibited both these structures. EDX and XPS spectra of ZnS-ZnO NC confirmed the presence of Zn, S and O in the NC. The photocatalytic degradation of cationic dyes were observed to be the highest by ZnS-ZnO NC compared to its individual components, ZnO and ZnS. |
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List of References |
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