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Photocatalytic Degradation of Rhodamine B by Carbon Nanotube Supported TiO2 and Ag Nanoparticles

TiO2와 Ag 나노입자가 도입된 탄소나노튜브를 이용한 Rhodamine B의 광분해 반응

  • Kim, Ji Dang (Department of Chemistry, Chonnam National University) ;
  • Choi, Hyun Chul (Department of Chemistry, Chonnam National University)
  • Received : 2019.05.01
  • Accepted : 2019.06.04
  • Published : 2019.08.20

Abstract

Keywords

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Figure 2. XPS survey spectra of the pristine CNT and CNT-TiO2/Ag.

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Figure 4. Representative Nyquist plots of P25, CNT-TiO2, and CNT-TiO2/Ag recorded in 30 ppm Rh. B solution at 0.2 VSCE, respectively.

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Scheme 1. Possible photocatalysis mechanism for CNT-TiO2/Ag nanoparticles under UV light illumination.

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Figure 1. (a) TEM image of pristine CNT, with corresponding EDX spectrum (inset). (b) TEM image of CNT-TiO2/Ag, with the corresponding EDX spectrum (inset).

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Figure 3. (a) Variation of UV-visible spectra of Rh. B solution in presence of CNT-TiO2/Ag under UV-vis irradiation, with corresponding Rh. B solution color-change sequence (inset). (b) The relationship between Ct/C0 plot of photocatalytic degradation of P25, CNT-TiO2 and CNT-TiO2/Ag. C0 and Ct are the initial dye concentration and the concentration at reaction time t, respectively.

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