{"title":"Poly Methyl Methacrylate (Pmma) Based Polyaniline Composite for Ammonia (Nh3) Gas Sensors","authors":"M. Panigrahi, B. Adhikari","doi":"10.34256/ioriip2126","DOIUrl":null,"url":null,"abstract":"Inorganic acids (HCl, H2SO4, and H3PO4) doped-PMMA/PANI composites are prepared by in-situ technique via oxidation-polymerization process. Different techniques such as XRD, FTIR, UV-Visible, four-probe method are used to characterize the composite. Presence of different chemical group of the doped composites is analysed by ATR-FTIR spectroscopic analysis. Charge carrier behaviour of the doped composite is analyzed by UV-Visible spectroscopy. Band gap (Eg) of the doped composites is determined from UV-Visible absorption analysis using Tauc expression. The estimated direct band gap energy (Eg) is found to be 1.93 eV (for HCl doped PMMA/PANI composite), 1.19 eV (for H2SO4 doped PMMA/PANI composite), and 1.71 eV (for H3PO4 doped PMMA/PANI composite), respectively. DC-conductivity is measured with and without magnetic field. Temperature dependent DC conductivity is also measured. In addition, we were discussed the response of ammonia (NH3) gas with polyaniline-based sensor materials.","PeriodicalId":368918,"journal":{"name":"Polyaniline based Composite for Gas Sensors","volume":"3 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polyaniline based Composite for Gas Sensors","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.34256/ioriip2126","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Inorganic acids (HCl, H2SO4, and H3PO4) doped-PMMA/PANI composites are prepared by in-situ technique via oxidation-polymerization process. Different techniques such as XRD, FTIR, UV-Visible, four-probe method are used to characterize the composite. Presence of different chemical group of the doped composites is analysed by ATR-FTIR spectroscopic analysis. Charge carrier behaviour of the doped composite is analyzed by UV-Visible spectroscopy. Band gap (Eg) of the doped composites is determined from UV-Visible absorption analysis using Tauc expression. The estimated direct band gap energy (Eg) is found to be 1.93 eV (for HCl doped PMMA/PANI composite), 1.19 eV (for H2SO4 doped PMMA/PANI composite), and 1.71 eV (for H3PO4 doped PMMA/PANI composite), respectively. DC-conductivity is measured with and without magnetic field. Temperature dependent DC conductivity is also measured. In addition, we were discussed the response of ammonia (NH3) gas with polyaniline-based sensor materials.
采用原位氧化聚合法制备了无机酸(HCl、H2SO4和H3PO4)掺杂pmma /PANI复合材料。采用XRD、FTIR、uv -可见光、四探针等技术对复合材料进行表征。利用ATR-FTIR光谱分析了掺杂复合材料中不同化学基团的存在。用紫外可见光谱分析了掺杂复合材料的载流子行为。利用Tauc表达，通过紫外可见吸收分析确定了掺杂复合材料的带隙(Eg)。估计的直接带隙能(Eg)分别为1.93 eV (HCl掺杂PMMA/PANI复合材料)、1.19 eV (H2SO4掺杂PMMA/PANI复合材料)和1.71 eV (H3PO4掺杂PMMA/PANI复合材料)。直流电导率是在有和没有磁场的情况下测量的。还测量了与温度相关的直流电导率。此外，我们还讨论了氨(NH3)气体对聚苯胺基传感器材料的响应。
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