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Start Over Author "Song, Yonghui" Journal chemosphere
15 results on '"Song, Yonghui"'

15. High yield M-BTC type MOFs as precursors to prepare N-doped carbon as peroxymonosulfate activator for removing sulfamethazine: The formation mechanism of surface-bound SO 4 •- on Co-N x site.

Author

Wang L, Li J, Liu X, Zhang J, Wen X, Song Y, and Zeng P

Subjects
Carbon chemistry, Peroxides chemistry, Metal-Organic Frameworks, Sulfamethazine chemistry
Abstract

M-BTCs (M = Fe, Co and Mn)/melamine were used to prepare N-doped carbon materials, and their performances as activator of peroxymonosulfate (PMS) for sulfamethazine (SMZ) removal were compared. M-BTC type metal-organic frameworks (MOFs) were synthesized under room temperature, with their yield about 7.5 times of ZIF-67 which is the most used MOFs to prepare N-doped carbon materials as the catalyst of persulfate-based advanced oxidation processes. Co-BTC/melamine derived N-doped carbon materials (Co-BTC/5MNC) performed the best, even better than that of ZIF-67 derived N-doped carbon materials. Initial pH (3-9), 0-10 mM inorganic anions (Cl - , NO 3 - , HCO 3 - and H 2 PO 4 2- ) and humic acid (5 and 10 mg/L) had no obvious inhibition on SMZ removal with Co-BTC/5MNC as catalyst. The results of both X-ray photoelectron spectroscopy and density functional theory (DFT) calculations indicated that N-coordinated cobalt single atom site (Co-N x ) was the possible active site of Co-BTC/5MNC. Importantly, surface-bound SO 4 •- was identified as the dominant reactive oxygen species for SMZ removal. The SO 4 •- generated through the charge transfer between PMS and catalyst, and was tightly adsorbed on Co-N x site., (Copyright © 2022 Elsevier Ltd. All rights reserved.)

Published
2022
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