Sonochemical Degradation of Reactive Black 5 with a Composite Catalyst of TiO2/Single-Walled Carbon Nanotubes
- Authors
- Cho, Eunju; Choi, Jongbok; Lee, Yonghyeon; Park, Jeong Min; Khim, Jeehyeong
- Issue Date
- 7월-2013
- Publisher
- IOP PUBLISHING LTD
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.52, no.7
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 52
- Number
- 7
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/102904
- DOI
- 10.7567/JJAP.52.07HE08
- ISSN
- 0021-4922
- Abstract
- In the sonocatalytic process, composites of TiO2-carbon were used because carbon provides more adsorption sites and acts like an electron sink to prevent the recombination of an electron/hole. Therefore, in the present study, the characteristics of a TiO2/single-walled carbon nanotubes catalyst (TiO2/SWCNTs) have been investigated, and the optimal weight ratio of SWCNTs and the dose for degradation of reactive black 5 (RB5) were also evaluated. TiO2/SWCNT composite was characterized using Brunauer-Emmett-Teller analysis, scanning electron microscopy, energy-dispersive X-ray diffraction microanalysis and spectra, and X-ray diffraction patterns. The degradation rate constants of RB5 with the ratio of SWCNTs were found to depend on the adsorption phenomenon of a surface catalyst, light absorbance, and the recombination of electrons and holes. As a result, the optimal ratio of carbon in the sono-TiO2/SWCNTs process for degradation of RB5 was TiO2 : SWCNTs 200 : 1. Additionally, the optimal dose of the catalyst was 0.5 g/L. (c) 2013 The Japan Society of Applied Physics
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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