TY - JOUR
T1 - Sonochemical degradation of reactive black 5 with a composite catalyst of TiO2/single-walled carbon nanotubes
AU - Cho, Eunju
AU - Choi, Jongbok
AU - Lee, Yonghyeon
AU - Park, Jeong Min
AU - Khim, Jeehyeong
PY - 2013/7
Y1 - 2013/7
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84880986282&partnerID=8YFLogxK
U2 - 10.7567/JJAP.52.07HE08
DO - 10.7567/JJAP.52.07HE08
M3 - Article
AN - SCOPUS:84880986282
SN - 0021-4922
VL - 52
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 7 PART 2
M1 - 07HE08
ER -