Edelmannová, M.M.EdelmannováLin K.-Y.Wu J.C.S.Troppová, I.I.TroppováČapek, L.L.ČapekKočí, K.K.Kočí2019-05-032019-05-03201801694332https://scholars.lib.ntu.edu.tw/handle/123456789/406426Photocatalytic hydrogenation of carbon dioxide is one of the promising technologies which can convert carbon dioxide under ambient condition to sustainable fuels, such as methane and methanol. The pure TiO 2 and copper doped TiO 2 photocatalysts with 1, 3 and 5 wt.% CuO were prepared by sol-gel processing within reverse micelles and characterized by N 2 physisorption, UV¡VVis, XRD, TPR, Raman spectroscopy, photoelectrochemical measurement and analysis of work function. Two types of experimental photocatalytic hydrogenation and reduction of CO 2 in the liquid phase and gas phase, respectively, were carried out under hydrogen. In the case of reaction in liquid phase, the highest yield of CH 4 was found in the presence 5 wt.% CuO/TiO 2 and pure TiO 2 . Activity of photocatalysts was affected mainly by two factors: the availability of active sites (S BET ) and the work needed to move the electron from surface (work function). In gas reaction, the most CH 4 and CO were generated in order: TiO 2 > 3 wt.% CuO/TiO 2 > 5 wt.% CuO/TiO 2 > 1 wt.% CuO/TiO 2 . In the gas phase, the enhanced photocatalytic performance was connected with better separation of the generated charge carriers. ? 2018 Elsevier B.V.CO 2CuO/TiO 2PhotocatalysisPhotocurrentWork function[SDGs]SDG7[SDGs]SDG13journal article10.1016/j.apsusc.2018.05.1232-s2.0-85047447281https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047447281&doi=10.1016%2fj.apsusc.2018.05.123&partnerID=40&md5=507fb9d245936a493eea86dddc449847