scholarly journals In Situ Vapor Polymerization of Poly(3,4-ethylenedioxythiophene) Coated SnO2-Fe2O3 Continuous Electrospun Nanotubes for Rapid Detection of Iodide Ions

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2084 ◽  
Author(s):  
Xiuru Xu ◽  
Wei Wang ◽  
Bolun Sun ◽  
Xue Zhang ◽  
Rui Zhao ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Fast Response ◽  
Core Shell ◽  
Current Response ◽  
Electrospinning Technique ◽  
Iodide Ions ◽  
Wide Range ◽  
Vapor Phase Polymerization ◽  
Fe2o3 Nanotubes

In this work poly(3,4-ethylenedioxythiophene) (PEDOT) coated SnO2-Fe2O3 continuous nanotubes with a uniform core–shell structure have been demonstrated for rapid sensitive detection of iodide ions. The SnO2-Fe2O3 nanotubes were firstly fabricated via an electrospinning technique and following calcination process. An in situ polymerization approach was then performed to coat a uniform PEDOT shell on the surface of as-prepared SnO2-Fe2O3 nanotubes by vapor phase polymerization, using Fe2O3 on the surface of nanotubes as an oxidant in an acidic condition. The resultant PEDOT@SnO2-Fe2O3 core-shell nanotubes exhibit a fast response time (~4 s) toward iodide ion detection and a linear current response ranging from 10 to 100 μM, with a detection limit of 1.5 μM and sensitivity of 70 μA/mM/cm2. The facile fabrication process and high sensing performance of this study can promote a wide range of potential applications in human health monitoring and biosensing systems.

scholarly journals Capacitive type Humidity Sensor based on PANI decorated Cu-Zns Porous Micropshere

2020 ◽  
Author(s):  
Jolly Bhadra ◽  
Hemalatha Parangusan ◽  
Zubair Ahmad ◽  
Shoaib Mallick ◽  
Farid Touati ◽  
...  
Keyword(s):  
Humidity Sensor ◽  
In Situ Polymerization ◽  
Fast Response ◽  
Polymerization Process ◽  
Average Response ◽  
Surface Absorption ◽  
Absorption Properties ◽  
Recovery Times ◽  
Response And Recovery

PANI coated Cu-ZnS porous microsphere structures have been synthesized by hydrothermal method and in-situ polymerization process. The synthesized composite is characterized by different techniques in order to study the structural, morphological and surface absorption properties. The experimental observation demonstrates that the PANI/1%Cu-ZnS composite has better sensitivity, fast response and good stability as compared to pure PANI and other PANI/CuZnS compositions. Finally, PANI/1% Cu-ZnS composite has been found to be optimized for the humidity sensors due to its well-distributed roughness, porosity and hydrophilicity. The average response and recovery times of the PANI/1% Cu-ZnS are found to be 42 s and 24 s, respectively, which outperform recent results.

Research of In Situ Polymerization and Core-Shell Structure Modified Emulsified Asphalt

2011 ◽  
Vol 71-78 ◽  
pp. 928-931
Author(s):  
Jin Liang Wu ◽  
Yong Xing Zhang ◽  
Chun Sun Zhang
Keyword(s):  
Shell Structure ◽  
In Situ Polymerization ◽  
Core Shell ◽  
Asphalt Emulsion ◽  
Sound Effect ◽  
Structure And Property ◽  
Modified Asphalt ◽  
Core Shell Structure ◽  
Emulsified Asphalt

Nowadays, there are dominantly two ways of producing modified emulsified asphalt ,one of which is to emulsify modified asphalt, the other to modify asphalt emulsion. But they have the same defect that modifier cannot be evenly mixed with asphalt emulsion, which has side effect on the performance of modified emulsified asphalt. The emulsified asphalt and modifier have different traits in structure and property. In order to make the modifier disperse in asphalt emulsion evenly to improve the performance of modified emulsified asphalt, a tentative idea is brought forward: we shall utilize in-situ polymerization and core-shell structure to enhance feature of emulsified asphalt. Core-shell structure is a method of synthesizing composite material, which can assist to achieve sound effect of the two kinds of materials. The point to emphasize is, in this paper, the introduction and feasibility of the method, its specialty against current mainly methods, the difficulties encountered in practice as well as its promising prospect and the anticipated target to achieve will all be illustrated.

Preparation and Electromagnetic Properties of CIP/SiO2/PANI Composites

2013 ◽  
Vol 834-836 ◽  
pp. 187-190
Author(s):  
Ming Ming Wang ◽  
Zhong Lun Zhang ◽  
Wan Jun Hao ◽  
Guo Yan Hou ◽  
Zhi Jun Xin ◽  
...  
Keyword(s):  
Dielectric Loss ◽  
In Situ Polymerization ◽  
Magnetic Loss ◽  
Electromagnetic Properties ◽  
Complex Permeability ◽  
Core Shell ◽  
Network Analyzer ◽  
Frequency Range ◽  
Xrd Patterns

CIP particles first were coated with SiO2 shell by the Stober process , then grafted the polyaniline by in-situ polymerization to prepare CIP/SiO2/PANI core-shell composites. The CIP/SiO2/PANI composites are composed the dielectric loss properties with the the magnetic loss properties, the morphologystructure and electromagnetic properties are characterized by SEMXRD and vector network analyzer, respectively. It is observed that SiO2 and PANI are on the surface of CIP particles, XRD patterns further confirm that the CIP/SiO2/PANI composites are synthesized successfully, and that interaction between components exist in the polymerization. In comparison with CIP, the complex permittivity of CIP/SiO2/PANI composites have certain enhancement in 2-18GHz frequency range, but it has a very small impact on the complex permeability.

IN SITU POLYMERIZATION OF FE3O4/POLYURETHANE NANOCOMPOSITES WITH HIGH PERFORMANCE

2016 ◽  
Vol 89 (4) ◽  
pp. 573-587 ◽  
Author(s):  
Junru Yao ◽  
Chunling Hou ◽  
Hailin Yu ◽  
Youyi Sun ◽  
Li Gao ◽  
...  
Keyword(s):  
High Performance ◽  
In Situ Polymerization ◽  
Magnetorheological Fluids ◽  
Synthesis Process ◽  
Polyurethane Elastomers ◽  
Microwave Absorbing Properties ◽  
Wide Range ◽  
Microwave Absorbing ◽  
Polyurethane Nanocomposites

ABSTRACT The stable Fe3O4 magnetorheological fluids were first prepared by coprecipitation method without using any surfactants and characterized by X-ray diffraction, transmission electron microscopy, and vibrating sample magnetometer. The polyurethane elastomers were further polymerized in the presence of stable Fe3O4 magnetorheological fluids. Furthermore, the effect of Fe3O4 loading on mechanical, magnetic, thermal, electrical, and microwave-absorbing properties of the polyurethane elastomers were systematically investigated. The results indicated that the synthesis process and Fe3O4 loading had great effects on the properties of polyurethane elastomers. A synthesis-based in situ polymerization method using Fe3O4 magnetorheological fluids instead of dry powder could improve the dispersion of Fe3O4 nanoparticles in the polyurethane matrix. The Fe3O4/polyurethane nanocomposites showed high mechanical, magnetic, thermal, electrical, and microwave-absorbing properties at a low loading of 2 wt%, and could potentially be used for a wide range of applications.

Nano-Au@PANI core-shell nanoparticles via in-situ polymerization as electrode for supercapacitor

2017 ◽  
Vol 722 ◽  
pp. 1-7 ◽  
Author(s):  
Yongtao Tan ◽  
Yafei Zhang ◽  
Lingbin Kong ◽  
Long Kang ◽  
Fen Ran
Keyword(s):  
In Situ Polymerization ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles
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