Simultaneous generation of furfuryl alcohol, formate, and H2 by co-electrolysis of furfuryl and HCHO over bifunctional CuAg bimetallic electrocatalysts at ultra-low voltage

Literature Information

Publication Date 2023-12-22
DOI 10.1039/D3EE03761D
Impact Factor 38.532
Authors

Liang Zhao, Zheng Lv, Yue Shi, Shuanglong Zhou, Yan Liu, Jiani Han, Qi Zhang, Jianping Lai


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Abstract

Furfuryl alcohol (FA), formate (FM), and H2 are important chemicals used in various chemical manufacturing industries. One promising approach for the simultaneous production of these chemicals is coupling cathodic furfuryl electrochemical hydrogenation (FEH) with anodic formaldehyde oxidation reaction (FOR) in an electrolyzer using bifunctional electrocatalysts. Here, bifunctional catalysts (CuxAgy/CF) are designed to achieve faradaic efficiency of 95.6 and 100.0% for FA and FM coproduction, respectively. This innovative technology not only achieves more valuable anodic products than oxygen but also simultaneously produces H2 at both anode and cathode at ultra-low voltage. Through density function theory (DFT) calculations and in situ spectroscopy analysis, it is demonstrated that the CuxAgy/CF electrocatalysts optimize the adsorption of intermediates ((C4H3O)CH2O* and H2C(OH)O*) and greatly reduce the energy barriers of rate-determining steps. The Cu3Ag7/CF(+)||Cu7Ag3/CF(−) electrolyzer reaches a current density of 500 mA cm−2 with a cell voltage of only 0.50 V, providing an effective method to simultaneously generate valuable chemicals (FA, FM, and H2).

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Energy & Environmental Science

Energy & Environmental Science
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Energy & Environmental Science is an international journal dedicated to publishing exceptionally important and high quality, agenda-setting research tackling the key global and societal challenges of ensuring the provision of energy and protecting our environment for the future. The scope is intentionally broad and the journal recognises the complexity of issues and challenges relating to energy conversion and storage, alternative fuel technologies and environmental science. For work to be published it must be linked to the energy-environment nexus and be of significant general interest to our community-spanning readership. All scales of studies and analysis, from impactful fundamental advances, to interdisciplinary research across the (bio)chemical, (bio/geo)physical sciences and chemical engineering disciplines are welcomed. Topics include, but are not limited to, the following: Solar energy conversion and photovoltaics Solar fuels and artificial photosynthesis Fuel cells Hydrogen storage and (bio) hydrogen production Materials for energy systems Capture, storage and fate of CO2, including chemicals and fuels from CO2 Catalysis for a variety of feedstocks (for example, oil, gas, coal, biomass and synthesis gas) Biofuels and biorefineries Materials in extreme environments Environmental impacts of energy technologies Global atmospheric chemistry and climate change as related to energy systems Water-energy nexus Energy systems and networks Globally applicable principles of energy policy and techno-economics

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