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Issue
Korean Journal of Chemical Engineering,
Vol.34, No.2, 476-483, 2017
Fabrication of carbon nanotube-loaded TiO2@AgI and its excellent performance in visible-light photocatalysis
Yang L, An Y, Dai B, Guo X, Liu Z, Peng B
Novel, visible light driven CNTs-TiO2@AgI hybrid materials were synthesized by a simple solvothermaldissolution-precipitation method, during which the acid vapor treated carbon nanotubes (CNTs) as template, AgI as sensitizer and TiO2 as the bridge unified them to form a ternary composite. The morphology and chemical components of as-prepared samples were characterized by high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). XRD and XPS characterizations indicated that anatase TiO2 and crystal AgI co-existed in the composite. HRTEM demonstrated CNTs were decorated with well-dispersed AgI and TiO2 nanoparticles (NPs), and TiO2 had an intimate connection with both AgI and CNTs. Diffusive reflectance UV-vis spectroscopy of CNTs-TiO2@AgI nanocomposite was extended to the whole UV-visible region due to adding of CNTs and AgI NPs. Degradation of Rhodamine B (RhB) polluted water using CNTs-TiO2@AgI NPs was carried out under visible light irradiation, and it showed higher degradation efficiency than CNTs-TiO2, TiO2@AgI, and CNTs@AgI NPs. The primary reason for the enhanced photocatalytic property was attributed to the synergic effect in CNTs-TiO2@AgI, which included the good adsorption ability and electrical conductivity of CNTs as well as the intimate connection and hetero-junctions among AgI, TiO2, and CNTs. Meanwhile, the as-prepared hybrid materials can be easily separated and reclaimed from the liquid phase, and the recycling tests indicated CNTs-TiO2@AgI had renewable performance.
Keywords: Titanium Dioxide; Carbon Nanotubes; Silver Iodide; Photocatalysis
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[Cited By]
  1. Razzaghi M, Karimi A, Aghdasinia H, Joghataei MT, Korean Journal of Chemical Engineering, 34(11), 2870, 2017
  2. Mutalib MA, Aziz F, Jamaludin NA, Yahya N, Ismail AF, Mohamed MA, Yusop MZM, Salleh WNW, Jaafar J, Yusof N, Korean Journal of Chemical Engineering, 35(2), 548, 2018
  3. Jung HR, Kim KN, Lee WJ, Korean Journal of Chemical Engineering, 36(5), 807, 2019
  4. Adhikari S, Mandal S, Kim DH, Korean Journal of Chemical Engineering, 37(12), 2359, 2020
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