Growth of single wall carbon nanotubes using PECVD technique: An efficient chemiresistor gas sensor

Lone, Mohd Yaseen; Kumar, Avshish; Husain, Samina; Zulfequar, M.; Harsh,; Husain, M.

doi:10.1016/j.physe.2016.10.049

Cited by 17 publications

(2 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The diameter of SWCNTs is around 1.7 nm, which is calculated using the formula 248/v. 29,30 Therefore, Raman spectra ( Figure 10) confirms the formation of PANI and SWCNTs-PANI nanocomposite, and also confirms that an interaction has taken place between the two materials. It is being concluded that precise interaction of doped NPANI with the annealed SWCNTs during in-situ polymerization gives an enhanced FE from the as-synthesized SWCNT-NPANI composites.…”

Section: Raman Spectroscopic Analysismentioning

confidence: 58%

Single-walled carbon nanotubes–polyaniline composites: Synthesis and field-emission analysis

Ansari

Shumaila

Lone

et al. 2019

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

In this article, we report a facile synthesis and comparative analysis of field emission behavior of polyaniline (PANI)-coated as-received and annealed single-walled carbon nanotube (SWCNT) films by in-situ polymerization and ex-situ synthesis routes, respectively. Amongst all the samples, the sample prepared by in-situ polymerization method with more fraction of annealed SWCNTs in the composite gave an enhanced field emission characteristics with E to = 3 V/μm and β = 1.2 × 104 probably because of good formation of pi-pi non-covalent bonds between the SWCNTs and PANI represented by pi-pi interaction between the quinoid rings of PANI and π bond of the SWCNTs lattice. A significant increase in the threshold field is observed after annealing and doping of nanocomposite films. Field emission behavior of as-prepared nanocomposite samples are also analyzed and discussed with two PANI forms: micro-PANI particles and PANI nanofibers. It is also speculated that PANI may have helped in lowering the overall work function of the composite structure which gave an enhanced field emission. The stability of all the samples are also presented and it is analyzed that nanocomposite sample films synthesized by in-situ polymerization method showed a stability for at least 8 h. The surface morphology analysis by field emission scanning electron microscopy of nanocomposite sample films reveal an increase in SWCNTs diameter upon PANI wrapping. The high-resolution transmission electron microscopy and Raman spectra and X-ray diffraction analysis are also presented.

show abstract

Section: Raman Spectroscopic Analysismentioning

confidence: 58%

Single-walled carbon nanotubes–polyaniline composites: Synthesis and field-emission analysis

Ansari

Shumaila

Lone

et al. 2019

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Its sensitivity is high when the temperature is low. Lone et al [ 55 ] demonstrated an efficient chemiresistive sensor with high sensitivity and fast response. A PECVD technique was used to grow vertically and uniform SWCNTs on an iron-deposited Si substrate at 550 °C.…”

Section: Ammonia (Nh 3 ) Chemiresistive Sensorsmentioning

confidence: 99%

Carbon Nanotube-Based Chemiresistive Sensors

Tang

Shi

Hou

et al. 2017

Sensors

146

View full text Add to dashboard Cite

The development of simple and low-cost chemical sensors is critically important for improving human life. Many types of chemical sensors have been developed. Among them, the chemiresistive sensors receive particular attention because of their simple structure, the ease of high precise measurement and the low cost. This review mainly focuses on carbon nanotube (CNT)-based chemiresistive sensors. We first describe the properties of CNTs and the structure of CNT chemiresistive sensors. Next, the sensing mechanism and the performance parameters of the sensors are discussed. Then, we detail the status of the CNT chemiresistive sensors for detection of different analytes. Lastly, we put forward the remaining challenges for CNT chemiresistive sensors and outlook the possible opportunity for CNT chemiresistive sensors in the future.

show abstract