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Enhanced room-temperature ammonia-sensing properties of polyaniline-modified WO3 nanoplates derived via ultrasonic spray process
Fan, GJ; Chen, DL; Li, T; Yi, SS; Ji, HP; Wang, Y; Zhang, ZT; Shao, G; Fan, BB; Wang, HL; Xu, HL; Lu, HX; Zhou, Y; Zhang, R; Sun, J
2020-06-01
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
SubtypeArticle
AbstractLow-temperature detection of ammonia (NH3) is of great significance in environmental control and human health. This paper reports an ultrasonic spray-assisted in-situ polymerization method to grow polyaniline (PANI) on the WO3 nanoplates derived by an intercalation-exfoliation process. The as-obtained WO3 @PANI (UWP-x) nanocomposites were designed with various aniline/WO3 molar ratios (x). The characterization analyses of chemical compositions and microstructure using XRD, XPS, FT-IR, SEM and TEM indicate that the WO3 @PANI samples consist of single-crystal WO3 nanoplates anchored with PANI nanoparticles. The NH3-sensing behaviors of the WO3@PANI nanocomposites were systematically evaluated. The WO3@PANI nanocomposites show higher NH3 -sensing performance than the WO3 nanoplates or PANI nanocrystals under same operating conditions. The optimized sample of UWP-2.5 is obviously sensitive to 0.5 ppm NH3, and exhibits a high response of 34 upon exposure to 100 ppm NH3 at room temperature with high stability and selectivity. Control experiments indicated that the ultrasonic spray process has played a vital role in forming PANI/WO3 nanocomposites with high NH3-sensing performance. Due to the proper anchoring and positive synergistic effect of PANI andWO(3) species, the newly-developed ultrasonic spray-assisted in-situ polymerization method provides a facile way to achieve high-performance room-temperature NH3-sensing materials.
DOI10.1016/j.snb.2020.127892
WOS KeywordNANOCOMPOSITE THIN-FILM ; CONDUCTING FILMS ; SENSOR ; GAS ; NH3 ; PERFORMANCE ; NANOSTRUCTURES ; SENSITIVITY ; EFFICIENT ; GRAPHENE
Language英语
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28033
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Fan, GJ,Chen, DL,Li, T,et al. Enhanced room-temperature ammonia-sensing properties of polyaniline-modified WO3 nanoplates derived via ultrasonic spray process[J]. SENSORS AND ACTUATORS B-CHEMICAL,2020.
APA Fan, GJ.,Chen, DL.,Li, T.,Yi, SS.,Ji, HP.,...&Sun, J.(2020).Enhanced room-temperature ammonia-sensing properties of polyaniline-modified WO3 nanoplates derived via ultrasonic spray process.SENSORS AND ACTUATORS B-CHEMICAL.
MLA Fan, GJ,et al."Enhanced room-temperature ammonia-sensing properties of polyaniline-modified WO3 nanoplates derived via ultrasonic spray process".SENSORS AND ACTUATORS B-CHEMICAL (2020).
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