Polyaniline based Composite for Gas Sensors最新文献

Acrylic Acid (AA) Based Polyaniline Composite for Liquified Petroleum Gas (LPG) Sensors 用于液化石油气(LPG)传感器的丙烯酸基聚苯胺复合材料

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2124

M. Panigrahi, B. Adhikari

引用次数: 0

Inorganic Acid Doped Polyaniline Based Carbon Monoxide (Co) Sensor 无机酸掺杂聚苯胺基一氧化碳(Co)传感器

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2128

M. Panigrahi, B. Adhikari

{"title":"Inorganic Acid Doped Polyaniline Based Carbon Monoxide (Co) Sensor","authors":"M. Panigrahi, B. Adhikari","doi":"10.34256/ioriip2128","DOIUrl":"https://doi.org/10.34256/ioriip2128","url":null,"abstract":"Simple in situ chemical oxidation method was employed to prepare different molar of HCl doped DL−PLA/PANI composites using AnHCl as precursor. Surface morphology, ATR−FTIR, UV–Visible, and band gap were studied. PANI nanowires with different diameter and smooth surface were observed for composites. The lowest direct band gap was found to be 1.68 eV for 2 (M) HCl doped DL−PLA/PANI. DC conductivity at room temperature was measured and followed the ohmic behaviour. The calculated highest DC conductivity at room temperature was found to be 0.1628 × 10−2 (S/cm) for 2 (M) HCl doped DL−PLA/PANI. Temperature variation (70−300 K) DC conductivity without magnetic field of as prepared composites was analysed using linear four probe techniques and showed semiconducting nature. The conductivity in the range of temperature (70−300 K) follows 3D VRH hopping mechanism. In kivelson model, the exponents are increased with increasing dopant concentration and was obeyed the power law. MR of the prepared DL−PLA/PANI composite films is strongly dependent on temperature, magnetic field, and concentration of HCl dopant. Negative MR is discussed in terms of a wave function−shrinkage effect on hopping conduction. In addition, we were discussed the response of carbon monoxide (CO) gas with polyaniline-based sensor materials.","PeriodicalId":368918,"journal":{"name":"Polyaniline based Composite for Gas Sensors","volume":"822 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123291040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fundamentals on Polyaniline based Composites 聚苯胺基复合材料的基本原理

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2121

M. Panigrahi, B. Adhikari

引用次数: 0

Cloisite 20A Based Polyaniline Nanocomposites for Nitrogen Dioxide (No2) Gas Sensors 二氧化氮(No2)气体传感器用Cloisite 20A基聚苯胺纳米复合材料

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2123

M. Panigrahi, B. Adhikari

{"title":"Cloisite 20A Based Polyaniline Nanocomposites for Nitrogen Dioxide (No2) Gas Sensors","authors":"M. Panigrahi, B. Adhikari","doi":"10.34256/ioriip2123","DOIUrl":"https://doi.org/10.34256/ioriip2123","url":null,"abstract":"Compacted polyaniline (PANI)/Layered silicate nanocomposites have been successfully prepared by simple in situ, core-shell, and ex situ polymerization routes using AnHCl as a predecessor through chemical oxidation method. The structure, chemical groups, electronic transition and properties were investigated by XRD, SEM, HRTEM, UV Visible, DC electrical conductivity, TGA, and DSC. The XRD results reveals that HCl-treated Cloisite 20A, and PANI-ES/Cloisite 20A nanocomposites are delaminated. Flake-like morphologies were observed in Cloisite 20A and HCl-treated Cloisite 20A, whereas different rate of compacted fibrous morphologies of prepared PANI-ES/Cloisite 20A nanocomposites were observed as evident from SEM images. The Si-O FTIR band position does not change even after HCl treatment of Cloisite 20A, but different FTIR peaks positions of PANI-ES/Cloisite 20A nanocomposites were shifted from pure PANI-ES peaks after using Cloisite 20A nanoclays. UV-Visible spectra indicated the increment of charge carrier within the PANI-ES/Cloisite 20A nanocomposites compared to the pure one. The prepared nanohybrids showed significantly improved thermal property compared to pristine PANI-ES as clear from TGA and DSC analysis. The highest DC electronic conductivity of nanocomposite prepared by core-shell route is found to be 5.12 S/cm using linear four probe techniques. In addition, the charge transport mechanism was understood with and without loading Cloisite 20A in PANI-ES. The conductivity data supported the temperature-dependence relationship σ(T) = σ0.exp[-To/T)1/4] and followed characteristic of three-dimensional variable-range hopping (3D‒VRH) mechanism. In addition, we were discussed the response of Nitrogen dioxide (NO2) gas with polyaniline based sensor materials.","PeriodicalId":368918,"journal":{"name":"Polyaniline based Composite for Gas Sensors","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123051809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Synthesis Methods of Polyaniline Based Composites 聚苯胺基复合材料的合成方法

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2122

M. Panigrahi, B. Adhikari

引用次数: 0

Poly Methyl Methacrylate (Pmma) Based Polyaniline Composite for Ammonia (Nh3) Gas Sensors 基于聚甲基丙烯酸甲酯(Pmma)的聚苯胺复合材料用于氨(Nh3)气体传感器

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2126

M. Panigrahi, B. Adhikari

引用次数: 0

Inorganic Doped Dl-Polylactide Polyaniline Based Composite for Methane (Ch4) Gas Sensing 无机掺杂dl -聚乳酸聚苯胺基甲烷气体传感复合材料

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2127

M. Panigrahi, B. Adhikari

引用次数: 0

DL-Polylactide (DL-PLA) Based Polyaniline Composite for Hydrogen Gas Sensors 聚乳酸(DL-PLA)基聚苯胺复合材料用于氢气传感器

Polyaniline based Composite for Gas Sensors Pub Date : 2021-11-25 DOI: 10.34256/ioriip2125

M. Panigrahi, B. Adhikari

{"title":"DL-Polylactide (DL-PLA) Based Polyaniline Composite for Hydrogen Gas Sensors","authors":"M. Panigrahi, B. Adhikari","doi":"10.34256/ioriip2125","DOIUrl":"https://doi.org/10.34256/ioriip2125","url":null,"abstract":"Different inorganic acids like HCl, HNO3, H2SO4 and H3PO4-doped based DL-PLA/PANI-ES composites were synthesized by in-situ chemical oxidation polymerization technique using liquid aniline as precursors. The doped composite have observed fibril-like morphology with different average sized diameter (178 nm for HCl doped composite, 162 nm (H2SO4 doped composite), 153 nm (H3PO4 doped composite) and 163 nm (HNO3 doped composite), respectively. Analysis of presence of functional groups and other chemical groups of as prepared composites was done by FTIR experiment in ATR mode. The optical (direct) band gap was estimated from UV-Visible absorption spectra. The estimated band gap values are to be 160 eV, 1.37 eV, 1.46 eV, and 1.69 eV for HCl, HNO3, H2SO4 and H3PO4-doped DL-PLA/PANI-ES composite, respectively. The electrical conduction mechanism of HCl-, H2SO4- and H3PO4-doped DL-PLA/PANI-ES composites were taken to study the conduction mechanism in detail in the low temperature regime (77-300 K) with and without applied of the magnetic field. Different models such as variable range hopping (VRH) and Arrhenius model were taken to explain the conduction mechanism of as prepared composites. In the Mott type VRH model, the density of states at the Fermi level, which is constant in the temperature range of 77-300 K were estimated. In the absence of magnetic field, DC conductivity of HCl-, H2SO4- and HNO3-, H3PO4- doped DL-PLA/PANI-ES composite was measured. Also, magnetoresistance (MR) was measured at room temperature for as prepared doped DL-PLA/PANI-ES composites and showed negative MR. In addition, we were discussed the response of hydrogen (H2) gas with polyaniline-based sensor materials.","PeriodicalId":368918,"journal":{"name":"Polyaniline based Composite for Gas Sensors","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132903840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2