Daichi Takami, Taku Kishimura, Yasutaka Kuwahara* and Hiromi Yamashita*,
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Photothermal Approach on Chemical Looping Method for Reverse Water Gas Shift Reaction Using Defective Molybdenum Oxide
CO2 conversion technologies utilizing solar light have garnered significant attention for establishing sustainable societies. Despite the extensive investigation of photothermal approaches, the effect of direct light irradiation on oxygen carriers on the reverse water gas shift chemical looping (RWGS-CL) reaction has not yet been explored. In this study, we investigated the effects of light irradiation on the activity of Pt-loaded metal oxides in the RWGS-CL reaction at 473 K. The Pt/MoO3–x material exhibited remarkable activity for the photo-assisted RWGS-CL reaction, which was attributed to its high concentration of oxygen vacancies and photothermal property. Moreover, it is notable that the light-induced heating was more effective than uniform heating in the exothermic H2-reduction step due to the preferable temperature gradient in the material. This study opens up new potentials for the photothermal-assisted CL method, including the separation of the endothermic and exothermic processes of reactions and the strategic use of light-induced temperature gradients.
期刊介绍：
ACS ES&T Engineering publishes impactful research and review articles across all realms of environmental technology and engineering, employing a rigorous peer-review process. As a specialized journal, it aims to provide an international platform for research and innovation, inviting contributions on materials technologies, processes, data analytics, and engineering systems that can effectively manage, protect, and remediate air, water, and soil quality, as well as treat wastes and recover resources.
The journal encourages research that supports informed decision-making within complex engineered systems and is grounded in mechanistic science and analytics, describing intricate environmental engineering systems. It considers papers presenting novel advancements, spanning from laboratory discovery to field-based application. However, case or demonstration studies lacking significant scientific advancements and technological innovations are not within its scope.
Contributions containing experimental and/or theoretical methods, rooted in engineering principles and integrated with knowledge from other disciplines, are welcomed.
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