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Artificial photosynthesis is an up to date topic for the fixation of CO2in form of valuable fuels. Recently, we\udset up an innovative concept of photoreactor to be applied to CO2photoreduction, enabling operation up\udto 20 bar. This allows to improve CO2solubility and to explore unconventional operating conditions for\udthis very challenging reaction. Following a preliminary communication, to demonstrate the validity of the\udapproach systematic testing has been here carried out on different TiO2photocatalysts (anatase, rutile and\udanatase + rutile) doped with 0.1 wt% Au, by tuning pressure, temperature and pH. The operating conditions\udhave been selected to maximise the production of gas phase products,i.e. CH4+H2, with respect to liquid\udphase organic compounds. The present results overperform many of the recent achievements reported in\udthe literature and throw the basis for a further optimisation of the photocatalytic material and of the\udphotoreactor

CO2 photoconversion to fuels under high pressure: effect of TiO2 phase and of unconventional reaction conditions

CO₂ photoconversion to fuels under high pressure: effect of TiO₂ phase and of unconventional reaction conditions