Contact-electro-catalysis for Direct Synthesis of H2O2 under Ambient Conditions |
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| Authors: | Jiawei Zhao Xiaotong Zhang Jiajia Xu Prof. Wei Tang Prof. Zhong Lin Wang Prof. Feng Ru Fan |
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| Affiliation: | 1. State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen University, Xiamen, 361005 China;2. CAS Center for Excellence in Nanoscience, Beijing Institute of Nano energy and Nano systems, Chinese Academy of Sciences, Beijing, 100083 China |
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| Abstract: | Hydrogen 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. |
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| Keywords: | Contact Electrification Electrocatalysis Hydrogen Peroxide Polytetrafluoroethylene Ultrasonication |
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