Single-walled carbon nanotube/cobalt phthalocyanine derivative hybrid material: preparation, characterization and its gas sensing properties

Abstract

A novel hybrid material composed of single-walled carbon nanotubes (SWNTs) and cobalt phthalocyanine (CoPc) derivatives have been obtained. The resultant hybrid has been confirmed by infrared spectroscopy, Raman spectroscopy, UV-Vis spectroscopy and X-ray photoelectron spectrometry. The results revealed that the CoPc derivatives had been successfully anchored on the surface of nanotubes through p-p stacking. The quantitatively determination of the CoPc derivatives have also been carried out through characterization by thermogravimetric analysis. Furthermore, the morphology of the resultant SWNT-CoPc derivative hybrids has been observed by transmission electron microscopy and scanning electron microscopy. Finally, gas sensor tests were performed to check the potential of this hybrid material while the sensing devices have been fabricated. The synergetic behavior between both of the candidates allows an excellent sensitivity and selectivity to dimethyl methylphosphonate (DMMP) (stimulant of nerve agent sarin). Overall, we present the advantages of combining metallophthalocyanine (MPc) with SWNTs in enhancing the properties of the final product, and pave a new avenue for the application of SWNT-MPc hybrids in the gas sensing field.

Noncovalent interactions of free-base phthalocyanine with elongated fullerenes as carbon nanotube models

“…. In the case of carbon nanotubes (CNTs) , the areas of particular interest include molecular photovoltaics and photoelectronic devices [18, 21-23, 27, 28, 33], nonlinear optical materials [38], catalysts for the oxygen reduction [19,20,31,34,36] and Li/SOCl 2 batteries [24], molecular spin-valves [40,41], electrochemical sensors [29,30,32,39], field-emission devices [37], and high-resistance advanced nanocomposites [35].…”

Hybrid materials of pyrene substituted phthalocyanines with single-walled carbon nanotubes: structure and sensing properties

“…The SWCNT/hybrids therefore provide good prospect for sensor applications as has already been demonstrated in previous publications. 21,22,37,58 To analyse the role of the central metal in MPc molecules the response of three different SWCNT/MPc-py hybrid lms towards NH 3 concentrations is depicted in Fig. 8.…”

“…21 Another hybrid based on Si(OC 2 H 5 ) 4 -CNT system was studied as a gas sensor. 10 This hybrid containing 1% CNTs was shown to possess the best response, allowing NO determination on the ppb level, but with less recovery.…”

Enhanced Cl2 sensitivity of cobalt-phthalocyanine film by utilizing a porous nanostructured surface fabricated on glass

“…12 In addition, various kinds of MPcs based hybrid structures such as polypyrrole/ phthalocyanine, TFPMPCs/MWCNT, CoPc functionalized by carbon nanotube etc., have also been employed in gas the sensing applications. [20][21][22][23] In addition, several other materials used for the detection of Cl 2 have been summarized in Table 1. [24][25][26][27][28][29][30][31][32][33] The sensitivity and operating temperature of these sensors have also been shown.…”