Vahid Jabbari - Novel high potential visible-light-active photocatalyst of CNT/Mo, S-codoped TiO 2 hetero-nanostructure

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      Publication Details (including relevant citation   information):

      Applied Surface Science 317, 302-311

      Abstract:

      The current study deals with synthesize of novel   nanophotocatalysts of CNT/Mo,S-codoped TiO2 by   reacting between titanium isopropoxide   (Ti(OC3H7)4) and CNT in aqueous   ammonia and subsequent calcining of hydrolysis of the products.   The prepared catalysts were characterized by N2  adsorption–desorption measurements, XRD, SEM, TEM, EDX, FT-IR,   and UV–vis DRS spectroscopy. SEM and TEM images exhibited uniform   coverage of CNT with anatase TiO2 nanoclusters. It was   also demonstrated that the presence of S and Mo within the   TiO2 acts as electrons traps and prevents the charge   recombination and also enables the TiO2 photocatalyst   to be active in visible-light region. Moreover, the   CNT/Mo,S-doped TiO2 nanohybrids has been proven to has   a excellent photocatalytic performance in photodecomposition of   Congored (CR), at which the rate of decomposition reaches 100% in   only 20 and 30 min under UV and visible-light irradiation,   respectively. The enhanced photocatalytic activity was ascribed   to the synergetic effects of excellent electrical property of CNT   and metal–non-metal codoping. Finally, which to best of our   knowledge is done for the first time, we have demonstrated that   Mo- and S-doped TiO2 decorated over CNT, or   CNT/Mo,S-codoped TiO2, may have high potential   applications in photocatalysis and environmental protection with   superior catalytic activity under visible-light illumination.

      Address (URL): doi:10.1016/j.apsusc.2014.08.123