Article history: The quantum yields and efﬁciency(ACF) was prepared via a modiﬁed deposition-precipitation method to Received 2 June 2017 facilitate its photon absorption and of photogenerated charge carriers have been the major issues for pho- Received in revised form 20 July 2017 tocatalysis on titania catalyst. The TiO /ACF catalyst with anatase TiO uniformly dispersed on activated 2 2 Accepted 22 July 2017 carbon ﬁbers electron transfer, thus improve the quantum yields and efﬁciency of the photogenerated Available online 30 July 2017 3+ 2+ electrons and holes. XPS analysis on the catalyst demonstrates the existence of Ti and Ti species, C Ti bond and abundant hydroxyls, which are also proved by UV–vis DRS and TG-DSC analysis. It is believed Keywords: that the acid environment in preparation plays an essential role in the formation of C Ti bond and surface Photocatalysis hydroxyls, which can be tuned by changing hydrothermal synthesis time. The C Ti bond can improve Formaldehyde the electron transfer in the catalyst and the substantial surface hydroxyls lead to high absorption for UV C Ti bond lines and enhanced adsorption of water and formaldehyde, resulting in more active OH free radicals and Surface hydroxyls TiO /ACF the outstanding
Applied Surface Science – Elsevier
Published: Jan 1, 2018
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