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ZnO nanonails for photocatalytic degradation of crystal violet dye under UV irradiation

1 Department of BIN Fusion Technology, Department of Polymer-Nano Science & Technology, Polymer BIN Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756, Republic of Korea
2 School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju 561-756, Republic of Korea

Topical Section: Nanomaterials, nanoscience and nanotechnology

In this study, nanonails-like zinc oxide (ZnO) nanostructures were synthesized in large quantity by thermal evaporation technique and further characterized in detail using different techniques such as field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffractometer (XRD), UV-visible spectroscopy, photoluminescence (PL) spectroscopy, and Raman spectroscopy. Morphological characterizations revealed that the as-synthesized nanostructures possess nail-like geometry, grown in large quantity. The XRD, UV-visible absorbance spectra, PL, and Raman spectra confirms good crystallinity and optical property of as-synthesized ZnO nanonails. The photocatalytic activities of designed nanostructures for crystal violet dye (CV-dye) degradation was evaluated under UV illumination and monitored by UV-vis spectroscopy at different time intervals until the dye was completely degraded to colorless end product. A fast decomposition was observed with ~95% degradation rate within the initial 70 min, which is attributed to high specific surface area (56.8 m2/g), high crystallinity and better optical property of ZnO nanonails.
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Keywords ZnO; nanonails; thermal evaporation; crystal violet; photocatalytic activity

Citation: Nirmalya Tripathy, Rafiq Ahmad, Jeong Eun Song, Hyun Park, Gilson Khang. ZnO nanonails for photocatalytic degradation of crystal violet dye under UV irradiation. AIMS Materials Science, 2017, 4(1): 267-276. doi: 10.3934/matersci.2017.1.267

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Copyright Info: 2017, Nirmalya Tripathy, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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