عنوان مجله
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APPLIED CATALYSIS B-ENVIRONMENTAL
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چکیده
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The implementation of precisely directional electron transfer at the interface of catalysts is still considered a huge
challenge. Herein, hierarchical Bi@BiOBr/C microrods derived from a novel Bi-MOF were employed as a model
to precisely construct the atomic-level interface electrons transfer channels via carbon-bismuth bonding. The
optimized Bi@BiOBr/C with plasmonic Bi and oxygen vacancies exhibited a photocatalytic removal efficiency of
69.5 % for ppb-level atmospheric NO, which is 3.5 times higher than that of pure BiOBr (19.8 %). The enhanced
photocatalytic performance is owing to precisely constructed electron transport channels with loaded graphitic
carbon as a bridge (i.e., BiOBr → graphitic carbon → Bi nanoparticles). Further DFT calculations demonstrated
the built-in graphitic carbon reconstructs an Ohmic contact with BiOBr and eliminates the Schottky barrier
between BiOBr and Bi nanoparticles, enhancing the photoelectron transfer efficiency. This research represents an
exciting case for the modulation of photoelectron transfer at the catalysts interface for air purification.
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