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DOI	10.1039/d0ra04991c
	Investigation of the structural; optical and gas sensing properties of PANI coated Cu-ZnS microsphere composite
	Parangusan H.; Bhadra J.; Ahmad Z.; Mallick S.; Touati F.; Al-Thani N.
发表日期	2020
ISSN	20462069
起始页码	26604
结束页码	26612
卷号	10 期号:45
英文摘要	Polyaniline (PANI)/Cu-ZnS composites with porous microspheres are prepared by a hydrothermal and in situ polymerization method. The structural, optical, and morphological properties are characterized by X-ray powder diffraction, FTIR, UV-vis, scanning electron microscope, transmission electron microscope. The XRD results confirmed that the PANI/Cu-ZnS composite is formed. The morphological analyses exhibited that the PANI/Cu-ZnS composite comprises the porous microspherical structures. The emission peaks obtained in photoluminescence spectra confirm the presence of surface defects in the prepared composite. The UV-DRS study shows that the bandgap of the samples is found to decrease for the PANI/Cu-ZnS composite compared to the pure Cu-ZnS sample. The calculated band gap (Eg) value of PANI/Cu-ZnS composite is 2.47 eV. Furthermore, the fabricated gas sensor based on PANI/Cu-ZnS can perform at room temperature and exhibits good gas sensing performance toward CO2 gas. In particular, PANI/Cu-ZnS sensor shows good response (31 s) and recovery time (23 s) upon exposure to CO2 gas. The p/n heterojunction, surface defects, and porous nature of the PANI/Cu-ZnS composite microsphere enhanced sensor performance. © 2020 The Royal Society of Chemistry.
scopus关键词	Carbon dioxide; Chemical detection; Energy gap; Fourier transform infrared spectroscopy; Gas detectors; Gases; Heterojunctions; II-VI semiconductors; Microspheres; Photoluminescence; Polyaniline; Scanning electron microscopy; Surface defects; Transmission electron microscopy; X ray powder diffraction; Zinc sulfide; Composite microspheres; Gas sensing properties; In-situ polymerization; Morphological analysis; Morphological properties; Photoluminescence spectrum; Polyanilines (PAni); Porous microspheres; Copper compounds
来源期刊	RSC Advances
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176887
作者单位	Centre for Advanced Materials (CAM), Qatar University, P.O. Box 2713, Doha, Qatar; Department of Electrical Engineering, College of Engineering, Qatar University, P.O. Box 2713, Doha, Qatar
推荐引用方式 GB/T 7714	Parangusan H.,Bhadra J.,Ahmad Z.,et al. Investigation of the structural; optical and gas sensing properties of PANI coated Cu-ZnS microsphere composite[J],2020,10(45).
APA	Parangusan H.,Bhadra J.,Ahmad Z.,Mallick S.,Touati F.,&Al-Thani N..(2020).Investigation of the structural; optical and gas sensing properties of PANI coated Cu-ZnS microsphere composite.RSC Advances,10(45).
MLA	Parangusan H.,et al."Investigation of the structural; optical and gas sensing properties of PANI coated Cu-ZnS microsphere composite".RSC Advances 10.45(2020).