Self-sensitization of tetracycline degradation with simulated solar light catalyzed by [email protected]
Publication Type
Original research
Authors

Zinc oxide (ZnO) nano-particles were chemically deposited onto montmorillonite (MONT) clay particles. The composite [email protected] was then characterized and used as a catalyst for photo-degradation of aqueous tetracycline. Unlike earlier studies, solar simulated light can be effectively used in this work. The composite shows high efficiency as adsorbent and as a photo-degradation catalyst. Both adsorbed and dissolved tetracycline molecules undergo mineralization under the photo-catalytic conditions, and up to 94% of the contaminant gross amount is completely mineralized. Other forms of ZnO particles, commercial ZnO and synthetic ZnO particles were examined in separate experiments. The [email protected] is superior to both pristine counterparts. The ability of tetracycline to sensitize the supported ZnO particles, to solar simulated light, before being photo-degraded itself, is discussed here for the first time. In addition to enhanced catalytic activity of the [email protected], the composite can be efficiently recovered and reused with no significant loss of efficiency.

Journal
Title
Solid State Sciences
Publisher
Elsevier
Publisher Country
United Kingdom
Indexing
Thomson Reuters
Impact Factor
1.8
Publication Type
Prtinted only
Volume
74
Year
2017
Pages
131-143