(Pyrenetetrasulfonate/ZnS)n Ordered Ultrathin Films with ZnAl Layered Double Hydroxide as Precursor and Ethanol-Sensing Properties

Content Provider	Semantic Scholar
Author	Xiao, Ya‐ Ping Zhang, Li‐min Guo, Ying Song, Yu-Fei
Copyright Year	2013
Abstract	Well-ordered ultrathin films (UTFs) of {pyrenetetrasulfonate(PyTS)/ZnS}n were fabricated by alternating assembly of 1,3,6,8-PyTS and exfoliated Zn2Al layered double hydroxide (LDH) nanosheets through layer-by-layer (LBL) electrostatic deposition, followed by an effective in situ gas/solid sulfurization reaction with H2S. The assembly process was monitored by UV/Vis spectroscopy, which showed regular stepwise growth of the (PyTS/LDH)n UTFs with consecutive deposition cycles. It is worth noting that the structure of the well-ordered UTFs is retained after the in situ gas/solid sulfurization reaction. Although both (PyTS/LDH)n UTFs and the sulfurized (PyTS/ZnS)n UTFs respond to ethanol at a relatively low operating temperature (70 °C), the (PyTS/ZnS)n UTFs exhibit a much better response, a fact that can be attributed to synergistic interactions between inorganic ZnS and organic pyrene components. Moreover, the well-ordered (PyTS/ZnS)30 UTF exhibits a stronger sensor response to ethanol than to other gases, including NH3, H2, CO, C2H2, and CH4.
Starting Page	3348
Ending Page	3351
Page Count	4
File Format	PDF HTM / HTML
DOI	10.1002/ejic.201300053
Volume Number	2013
Alternate Webpage(s)	http://www.elitetech.com.cn/uploadfile/2016/0927/20160927014839260.pdf
Alternate Webpage(s)	https://doi.org/10.1002/ejic.201300053
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article