A Fe 2 O 3 film exhibited very high activity for CO 2 photoreduction with H 2 O under high solar light intensity and temperature. The main detected gas products were CH 4 , C 2 H 4 and C 2 H 6 hydrocarbons, simultaneously produced on α-Fe 2 O 3 film. The maximum generation rates of CH 4 , C 2 H 4 and C 2 H 6 reached 1470.7, 736.2 and 277.2 μmol/(g cata •h), respectively, thus strongly outperforming the performance obtained under standard conditions, and CO 2 conversion reached 0.78%. These

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... ts prove the feasibility of the novel approach, and the suitability of iron oxide as a thermally active semiconductor catalyst. The noteworthy performance of Fe 2 O 3 film was arising from the beneficial contribution of the highly favorable photo thermal conditions and the formation of Fe 2 O 3 /Fe 3 O 4 Z-scheme system. The study elucidates the feasibility of photo-thermal synergistic catalytic effect for solar energy utilization in CO 2 photoreduction.