Contact‐electro‐catalysis for Direct Synthesis of H2O2 under Ambient Conditions

Abstract

AbstractHydrogen peroxide (H2O2) is an indispensable basic reagent in various industries, such as textile bleach, chemical synthesis, and environmental protection. However, it is challenging to prepare H2O2 in a green, safe, simple and efficient way under ambient conditions. Here, we found that H2O2 could be synthesized using a catalytic pathway only by contact charging a two‐phase interface at room temperature and normal pressure. Particularly, under the action of mechanical force, electron transfer occurs during physical contact between polytetrafluoroethylene particles and deionized water/O2 interfaces, inducing the generation of reactive free radicals (⋅OH and ⋅O2− ), and the free radicals could react to form H2O2, yielding as high as 313 μmol L−1 h−1. In addition, the new reaction device could show long‐term stable H2O2 production. This work provides a novel method for the efficient preparation of H2O2, which may also stimulate further explorations on contact‐electrification‐induced chemistry process.