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Visible‐Light‐Enhanced Photocatalytic Activities for Degradation of Organics by Chromium Acetylacetone Supported on UiO‐66‐NH 2
Author(s) -
Xu PanPan,
Zhang Liuxue,
Jia Xu,
Wang Xiulian,
Cao Yijie,
Zhang Yu
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202003485
Subject(s) - photocatalysis , acetylacetone , xylenol orange , chromium , methyl orange , catalysis , visible spectrum , nuclear chemistry , chemistry , inorganic chemistry , materials science , organic chemistry , optoelectronics
The constructing of efficient photocatalysts for environmental remediation has attracted a great deal of attention in recent years. In this paper, Cr /UiO‐66‐NH 2 was synthesized by the chromium acetylacetone grafted on UiO‐66‐NH 2 directly and UiO‐66‐NH 2 ‐SA‐Cr (anchored on the Schiff base UiO‐66‐NH 2 ‐SA with chemical bonds) was prepared by post‐synthesis method, which both provided such support in degrading tetracycline (TC) and xylenol orange (XO) under visible light. Compared with UiO‐66‐NH 2 and Cr /UiO‐66‐NH 2 , the photocatalytic experiments indicated that UiO‐66‐NH 2 ‐SA‐Cr possessed significant enhanced photocatalytic activity, with 76.5 % of tetracycline (TC) and 71.5 % of xylenol orange (XO) being removed under the optimization of experimental conditions. The enhanced photocatalytic activity of UiO‐66‐NH 2 ‐SA‐Cr could be attributed to the obvious decrease in the band gap, which could enhance the capacity of visible‐light absorption, and the presence of catalytic sites on the Chromium Schiff base complex was also a key factor for the photocatalytic performance, which could achieve high‐efficiency catalytic activity. Furthermore, these materials also exhibited a good recyclability with almost unchanged degradation efficiency after five recycling tests. Above these indicated that these materials mentioned had great potential in the field of wastewater treatment and antibiotic contaminant.