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Here, an electrolytic system is constructed in which the cathode and anode co\u2010release H\n                    <jats:sub>2<\/jats:sub>\n                    at ultra\u2010low input voltage using formaldehyde oxidation reaction (FOR) instead of OER. The prepared RuCe co\u2010doped Cu\n                    <jats:sub>2<\/jats:sub>\n                    O nanotubes on copper foam (RuCe\u2010Cu\n                    <jats:sub>2<\/jats:sub>\n                    O\/CF) are used as electrode materials for the HER\u2010FOR system. A current density of 0.8 A cm\n                    <jats:sup>\u22122<\/jats:sup>\n                    is achieved at 0.55\u00a0V, and a stable hydrogen production process is realized at both the cathode and anode. Density functional theory (DFT) studies show that the synergistic effect of Ru and Ce drives: i) the\n                    <jats:italic>d<\/jats:italic>\n                    \u2010band center of RuCe\u2010Cu\n                    <jats:sub>2<\/jats:sub>\n                    O\/CF away from the Fermi energy level; ii) the energy barrier for the C\u2500H cracking of the H\n                    <jats:sub>2<\/jats:sub>\n                    C(OH)O\n                    <jats:sup>*<\/jats:sup>\n                    intermediate in FOR is lowered, which promotes the formation of H\n                    <jats:sub>2<\/jats:sub>\n                    from H\n                    <jats:sup>*<\/jats:sup>\n                    , and iii) \u0394G\n                    <jats:sub>H*<\/jats:sub>\n                    tends to 0 (\u22120.1\u00a0eV), optimizing the reaction kinetics of HER. This work provides a new design for an efficient catalyst for dual hydrogen production systems from water splitting.\n                  <\/jats:p>","DOI":"10.1002\/smll.202406107","type":"journal-article","created":{"date-parts":[[2024,8,22]],"date-time":"2024-08-22T17:07:19Z","timestamp":1724346439000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":23,"title":["Dual Hydrogen Production System: Synergistic Effect of Ru and Ce Over Cu\n                    <sub>2<\/sub>\n                    O Nanotubes Drives Hydrogen Evolution and Formaldehyde Oxidation"],"prefix":"10.1002","volume":"20","author":[{"given":"Hongjie","family":"Yu","sequence":"first","affiliation":[{"name":"State Key Laboratory Breeding Base of Green\u2010Chemical Synthesis Technology College of Chemical Engineering Zhejiang University of Technology  Hangzhou 310014 P. R. 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