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Fast and Long‐Lasting Iron(III) Reduction by Boron Toward Green and Accelerated Fenton Chemistry
Author(s) -
Zhou Peng,
Ren Wei,
Nie Gang,
Li Xiaojie,
Duan Xiaoguang,
Zhang Yongli,
Wang Shaobin
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202007046
Subject(s) - boron , chemistry , radical , reactivity (psychology) , hydroxyl radical , inorganic chemistry , metal , photochemistry , organic chemistry , medicine , alternative medicine , pathology
Generation of hydroxyl radicals in the Fenton system (Fe II /H 2 O 2 ) is seriously limited by the sluggish kinetics of Fe III reduction and fast Fe III precipitation. Here, boron crystals (C‐Boron) remarkably accelerate the Fe III /Fe II circulation in Fenton‐like systems (C‐Boron/Fe III /H 2 O 2 ) to produce a myriad of hydroxyl radicals with excellent efficiencies in oxidative degradation of various pollutants. The surface B−B bonds and interfacial suboxide boron in the surface B 12 icosahedra are the active sites to donate electrons to promote fast Fe III reduction to Fe II and further enhance hydroxyl radical production via Fenton chemistry. The C‐Boron/Fe III /H 2 O 2 system outperforms the benchmark Fenton (Fe II /H 2 O 2 ) and Fe III ‐based sulfate radical systems. The reactivity and stability of crystalline boron is much higher than the popular molecular reducing agents, nanocarbons, and other metal/metal‐free nanomaterials.