Converting CoS-TEA hybrid compound to CoS defective ultrathin nanosheets and their enhanced photocatalytic property

Publication date: Available online 11 July 2018Source: Journal of Molecular LiquidsAuthor(s): Win Thi Yein, Qun Wang, Jinzhu Wu, Xiaohong WuAbstractCoS ultrathin nanosheets with thickness of about 4.6 nm had been obtained through in-situ generated inorganic-organic hybrid CoS-TEA (TEA = triethanolamine) as self-sacrificial precursors. More importantly, defective ultrathin CoS nanosheets showed the boosted and faster visible light photocatalytic property i.e. 97.34% degradation of Rhodamine B (RhB) in 80 min as compared to CoS nanoplates prepared under the similar condition and the previous report. In addition, the enhanced photocatalytic activity originated from prolonged lifetime of photoinduced electron–hole pairs and faster interfacial charge transfer and RhB dye photodegradation reaction pathway has been revealed using photoelectrochemical and optical techniques.Graphic abstractCoS ultrathin nanosheets with thickness of ~4.6 nm had been obtained via in-situ generated CoS–TEA (TEA = triethanolamine) hybrid microrods as self-sacrificial precursors. Importantly, CoS nanosheets displayed 6.5 times higher photocatalytic activity relative to nanoplates CoS, which is attributed to long lifetime of photoinduced electron and faster interfacial charge transfer.
Source: Journal of Molecular Liquids - Category: Molecular Biology Source Type: research