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Article Abstract
Using an l-arginine (LA)-functionalized Pd-Ni catalyst, hydrogen peroxide (HO) was directly synthesized via a self-designed microreactor at ambient temperature and pressure. The yield of HO achieved 574.31g kg h, with the concentration of HO in the solution reaching 4.05 wt % per hour. After five cycles and online activation, the LA functionalized Pd-Ni catalyst maintained high HO catalytic activity. The catalytic activity evaluation experiments, characterization results, and simulation studies demonstrated that Ni doping and LA-functionalization synergistically modulate the electronic structure of the active Pd component. This modulation increases the concentration of Pd at the active sites, effectively inhibits the dissociation of the O-O bond in O*, OOH*, and HOOH* species, thereby enhancing the catalytic performance for HO production. This study proposes a systematic strategy for the design of Pd-based catalysts to directly synthesize highly efficient HO.
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