127b1f64325945b98342603bbb9d9718 pmc_34070566.pdf 183c26a9e9f88af19519644e9043f0b08f7ced6b pmc_34070566.pdf 554acc3250daf7eef4159d494bdd0978d7c6fb491cf406b4cebcb42e248c7e5b pmc_34070566.pdf Title: Photodehydrogenation of Ethanol over Cu2O/TiO2 Heterostructures Subject: The photodehydrogenation of ethanol is a sustainable and potentially cost-effective strategy to produce hydrogen and acetaldehyde from renewable resources. The optimization of this process requires the use of highly active, stable and selective photocatalytic materials based on abundant elements and the proper adjustment of the reaction conditions, including temperature. In this work, Cu2O-TiO2 type-II heterojunctions with different Cu2O amounts are obtained by a one-pot hydrothermal method. The structural and chemical properties of the produced materials and their activity toward ethanol photodehydrogenation under UV and visible light illumination are evaluated. The Cu2O-TiO2 photocatalysts exhibit a high selectivity toward acetaldehyde production and up to tenfold higher hydrogen evolution rates compared to bare TiO2. We further discern here the influence of temperature and visible light absorption on the photocatalytic performance. Our results point toward the combination of energy sources in thermo-photocatalytic reactors as an efficient strategy for solar energy conversion. Keywords: titanium dioxide; copper oxide; photodehydrogenation; ethanol; thermo-photocatalysis; hydrogen Author: Congcong Xing, Yu Zhang, Yongpeng Liu, Xiang Wang, Junshan Li, Paulina R. 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