CNTs based improved chlorine sensor from non-covalently anchored multi-walled carbon nanotubes with hexa-decafluorinated cobalt phthalocyanines
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
CNTs based improved chlorine sensor from non-covalently anchored multi-walled carbon nanotubes with hexa-decafluorinated cobalt phthalocyanines
|
|
| Creator |
Sharma, Anshul Kumar
Mahajan, Aman Bedi, R. K. Kumar, Subodh Debnath, A. K. Aswal, D. K. |
|
| Subject |
Chemistry
|
|
| Description |
To study the effect of synergetic interactions between metal-phthalocyanine and carbon nanotubes for gas sensing characteristics of carbon nanotubes, we synthesized a hybrid of cobalt(II)-1,2,3,4,8,9,10,11,15,16,17,18,22,23,24,25-hexa-decafluoro-29H,31H-phthalocyanine/multi-walled carbon nanotubes (F16CoPc/MWCNTsCOOH). The as-prepared hybrid was characterized through spectroscopic (FT-IR, UV-vis and Raman), electron microscopic (TEM and FE-SEM) and TGA investigations that confirmed the successful non-covalent anchoring of F16CoPc onto MWCNTsCOOH through pi-pi stacking interactions. Further, a highly reversible, reproducible, sensitive and Cl-2 selective chemiresistive sensor was fabricated using F16CoPc/MWCNTsCOOH hybrid, which exhibited a sensitivity of similar to 63% for 2 ppm of Cl-2 and a limit of detection as low as 0.05 ppb. A plausible gas sensing mechanism for improved gas sensing characteristics of F16CoPc/MWCNTsCOOH sensor towards Cl-2 was explained using Raman, X-ray photoelectron spectroscopy (XPS) and electrochemical impedance spectroscopy (EIS) studies. Herein, cobalt metal ion is found to play an important role in enhancing gas sensing characteristics of the fabricated sensor.
|
|
| Publisher |
Royal Society of Chemistry
|
|
| Date |
2017
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://npl.csircentral.net/2637/1/CNTs%20based%20improved%20chlorine%20sensor%20from%20non-covalently%20anchored%20multi-walled%20carbon%20nanotubes%20with%20hexa-decafluorinated%20cobalt%20phthalocyanines.pdf
Sharma, Anshul Kumar and Mahajan, Aman and Bedi, R. K. and Kumar, Subodh and Debnath, A. K. and Aswal, D. K. (2017) CNTs based improved chlorine sensor from non-covalently anchored multi-walled carbon nanotubes with hexa-decafluorinated cobalt phthalocyanines. RSC Advances , 7 (78). pp. 49675-49683. ISSN 2046-2069 |
|
| Relation |
http://npl.csircentral.net/2637/
|
|