scholarly journals Facile Synthesis of Polyaniline Nanotubes Using Self-Assembly Method Based on the Hydrogen Bonding: Mechanism and Application in Gas Sensing

Polymers ◽  
2017 ◽  
Vol 9 (12) ◽  
pp. 544 ◽  
Author(s):  
Changqing Yin ◽  
Lei Gao ◽  
Fei Zhou ◽  
Guotao Duan
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Gas Sensing ◽  
Bonding Mechanism ◽  
Facile Synthesis ◽  
Assembly Method ◽  
Polyaniline Nanotubes

Preparation and Characterization of Polyaniline Nanotubes Doped with Different Acid

2013 ◽  
Vol 401-403 ◽  
pp. 663-666
Author(s):  
Xue Lian Bai ◽  
Jian Ting Mei ◽  
Zhong Guo Mu ◽  
Yun Bai
Keyword(s):  
Acetic Acid ◽  
Self Assembly ◽  
Ammonium Persulfate ◽  
Tetraacetic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure And Property ◽  
Assembly Method ◽  
Polyaniline Nanotubes

Polyaniline (PANI) nanotubes were synthesized separately using amino acetic acid (AA), ethylenediamine tetraacetic acid (EDTA), oxalic acid (OA) as dopant and ammonium persulfate (APS) as oxidant by a self-assembly method. SEM, TEM,FTIR and X-ray diffraction (XRD) and applying the 4 probes method characterized the morphology, structure and property of the product. It was found that nanotubes morphology were synthesized when the [Aci/[A ratio is 1:2.The room template conductivity of the products were studied.

Hydrogen-Bonding Layer Protecting Polyelectrolyte Capsules and Its Mechanical Property Study with Atomic Force Microscope

2008 ◽  
Vol 8 (6) ◽  
pp. 2996-3002 ◽  
Author(s):  
Liqin Ge ◽  
Xing Wang ◽  
Long Ba ◽  
Zhongze Gu
Keyword(s):  
Hydrogen Bonding ◽  
Atomic Force Microscope ◽  
Elastic Deformation ◽  
Self Assembly ◽  
Laser Scanning ◽  
Confocal Laser ◽  
Bonding Layer ◽  
Layer By Layer ◽  
Assembly Method ◽  
Atomic Force

The hydrogen-bonding multilayered polyelectrolyte capsules with sizes around 6 μm were fabricated by layer-by-layer self-assembly method. The morphology of the obtained capsules was observed with Scanning Electron Microscope (SEM), Confocal Laser Scanning Microscope (CLSM) and Atomic Force Microscope (AFM), respectively. The elastic properties of the capsules were studied with AFM. The capsule was pressed by cantilever with different lengths, a glass bead glued at the end of the cantilever. The force curves were measured on the capsule in air. The Young's modulus of the capsule was obtained (E = 170 MPa for the loading). Results show that this model can predict the elastic deformation of the microcapsule. The accuracy of the elastic deformation of polymer capsule can be ensured using a cantilever of mediate stiffness. Our results show that the existence of the hydrogen-bonding layer makes the multilayered polyelectrolyte harder in comparison with the pure multilayered polyelectrolyte capsules.

Facile synthesis of mesoporous ZnAl2O4 thin films through the evaporation-induced self-assembly method

2009 ◽  
Vol 488 (1) ◽  
pp. 320-324 ◽  
Author(s):  
Xiqiang Tian ◽  
Lijuan Wan ◽  
Kai Pan ◽  
Chungui Tian ◽  
Honggang Fu ◽  
...  
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Facile Synthesis ◽  
Assembly Method ◽  
Evaporation Induced Self Assembly

Preparation of polyaniline nanotubes by a template-free self-assembly method

2011 ◽  
Vol 65 (13) ◽  
pp. 2015-2018 ◽  
Author(s):  
Zhengzheng Huang ◽  
Enhui Liu ◽  
Haijie Shen ◽  
Xiaoxia Xiang ◽  
Yingying Tian ◽  
...  
Keyword(s):  
Self Assembly ◽  
Assembly Method ◽  
Template Free ◽  
Polyaniline Nanotubes

scholarly journals Enhanced gas sensing performance of graphene/ZnS-CdS hetero-nanowires gas sensor synthesized by Langmuir-Blodgett self-assembly method

2017 ◽  
Vol 922 ◽  
pp. 012023
Author(s):  
Hu Li ◽  
Ishtiaq Hassan Wani ◽  
Anumol Ashok ◽  
Yuanyuan Han ◽  
S. Hassan M. Jafri ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Self Assembly ◽  
Gas Sensing ◽  
Langmuir Blodgett ◽  
Assembly Method ◽  
Sensing Performance

A dimethyl methylphonate sensor based on HFIPPH modified SWCNTs

2022 ◽  
Author(s):  
Haiyang Wu ◽  
Yubin Yuan ◽  
Qiang Wu ◽  
Xiangrui Bu ◽  
Long Hu ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Self Assembly ◽  
High Performance ◽  
Gas Sensing ◽  
Detection System ◽  
High Sensitivity ◽  
Assembly Method ◽  
Sensitivity And Selectivity ◽  
Effect Transistor ◽  
Walled Carbon Nanotubes

Abstract In order to meet the requirements of ultra-fast real-time monitoring of sarin simulator with high sensitivity and selectivity, it is of great significance to develop high performance dimethyl methylphonate (DMMP) sensor. Herein, we proposed a DMMP sensor based on p-hexafluoroisopropanol phenyl (HFIPPH) modified self-assembled single-walled carbon nanotubes (SWCNTs) with field effect transistor (FET) structure. The self-assembly method provides a 4 nanometres thick and micron sized SWCNT channel, with high selectivity to DMMP. The proposed SWCNTs-HFIPPH based sensor exhibits remarkably higher response to DMMP than bare SWCNT based gas sensor within only few seconds. The gas sensing response of SWCNTs-HFIPPH based sensor for 1ppm DMMP is 18.2%, and the response time is about 10 seconds. What's more, the gas sensor we proposed here shows excellent selectivity and reproducibility, and the limitation of detection is as low as ppb level. The proposed method lays the foundation for miniaturization and integration of DMMP sensors, expecting to develop detection system for practical sarin sensing application.

scholarly journals Facile Synthesis of the Composites of Polyaniline and TiO2 Nanoparticles Using Self-Assembly Method and Their Application in Gas Sensing

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 493 ◽  
Author(s):  
Lei Gao ◽  
Changqing Yin ◽  
Yuanyuan Luo ◽  
Guotao Duan
Keyword(s):  
Phosphoric Acid ◽  
Tio2 Nanoparticles ◽  
Gas Sensors ◽  
Self Assembly ◽  
Gas Sensing ◽  
Aniline Monomer ◽  
Sensing Properties ◽  
Assembly Method ◽  
Gas Sensing Properties ◽  
20 Nm

The composites of polyaniline and TiO2 nanoparticles with different contents were prepared in the aqueous solution of phosphoric acid, in which the phosphoric acid was selected as the protonic acid to improve the conductivity of polyaniline. In the composites, the TiO2 nanoparticles with the size of about 20 nm were coated by a layer of polyaniline film with a thickness of about 5 nm. Then, the gas sensors were constructed by a liquid–gas interfacial self-assembly method. The gas-sensing properties of the composites-based gas sensors obviously improved after doping with TiO2 nanoparticles, and the sensor response of the composites increased several times to NH3 from 10 ppm to 50 ppm than that of pure polyaniline. Especially when the mass ratio of TiO2 to aniline monomer was 2, it exhibited the best gas response (about 11.2–50 ppm NH3), repeatability and good selectivity to NH3 at room temperature. The p–n junction structure consisting of the polyaniline and TiO2 nanoparticles played an important role in improving gas-sensing properties. This paper will provide a method to improve the gas-sensing properties of polyaniline and optimum doping proportion of TiO2 nanoparticles.

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