In:
Surface and Interface Analysis, Wiley, Vol. 54, No. 1 ( 2022-01), p. 59-66
Abstract:
To efficiently address environmental pollution, we synthesized AC‐coupled TiO 2 nano‐photo‐catalysts and applied it to the degradation of high concentration 2,4‐dichlorophenols (2,4‐DCP). Herein, we have successfully coupled activated carbon (AC) to TiO 2 by a sol gel method. The as‐prepared optimized‐amount TO/10AC nano‐composites delivered unprecedented photo‐catalytic activity as compared to the pristine TO nano‐particles and degraded 100% 2,4‐DCP in 2 h. According to the fluorescence spectrum, temperature‐programed desorption curve, and O 2 electrochemical reduction curve related to the generated OH amounts, it is inferred that the photo‐catalytic activity is ascribed to the coupled AC for accepting electrons, promoting O 2 adsorption and promoting reactant adsorption. More importantly, no obvious deactivation was observed even after running at least five cycles; this excellent stability makes them auspicious photo‐catalyst for the degradation of high concentration pollutants in practical applications. Besides, the scavenger experiments confirmed that super oxide radicals were the main active species that involve during the photo‐catalytic degradation of 2,4‐DCP. This work delivers a viable approach to develop the photo‐catalysis by coupling a proper amount of AC with the TO for the remediation of high concentration environmental pollutants.
Type of Medium:
Online Resource
ISSN:
0142-2421
,
1096-9918
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
2023881-2
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