BE · doi.org
Ningchao Zheng, Zhizeng Pan, Shuai Kang — Advanced Functional Materials · ABSTRACT Hydrogen peroxide (H 2 O 2 ) is regarded as a promising strategy for radioactive uranium removal, due to its eco��friendliness and ability to convert free UO 2 2+ into insoluble studtite. However, the spontaneous and selective production of H 2 O 2 under ambient conditions remains challenging. This study develops a P‐Ag for spontaneous O 2 activation and selective H 2 O 2 synthesis under ambient conditions. The H 2 O 2 yields of P‐Ag reach 1210 µmol g −1 h −1 in air and 1876.3 µmol g −1 h −1 in O 2 , surpassing most of the recently reported catalytic systems. Importantly, the H 2 O 2 generated in situ by P‐Ag achieves a high uranium removal activity (48.5) within 60 min, outperforming 23 known systems. Mechanistic studies indicate that P‐Ag follows a two‐step single‐electron O 2 activation pathway. The electron‐donating Ag sites drive the complete catalytic cycle, encompassing H
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