Raman spectroscopy and TGA studies for the synthesis of multi-walled carbon nanotube-functionalized thiol (MWCNT-SH) nanocomposites: study of effect of concentration

Abstract

We have investigated some methods such as Raman spectroscopy and thermogravimetric analysis (TGA) studies for the nanocomposites multi-walled carbon nanotube-functionalized thiol (MWCNT-SH) by adding to cysteamine with known concentration in nanocomposite. For this study, we synthesized nanocomposite MWCNT-SH by the reaction between multi-walled carbon nanotubes-functionalized carboxyl and the cysteamine. For study of the effect of concentration, cysteamine with different concentrations was used (1, 3 and 5 % weight) and it was called MWCNT-SH1, MWCNT-SH3 and MWCNT-SH5, respectively. Then, the nanocomposite provided was characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). The surface structure of nanocomposites can be analyzed and confirmed using Raman and FT-IR spectroscopy. Also, to investigate the thermal stability TGA was used. The study of TGA showed that nanocomposite MWCNT-SH had low thermal stability at temperatures more than 100°C.

Removal of dye molecules from aqueous solution by carbon nanotubes and carbon nanotube functional groups: critical review

“…70 Because of the presence of toxic amines in the effluent, azo dyes are classied as toxic. 71,72 Degradation-based dyes are highly sustainable and have higher longevity in effluents. 72 In the environment, reactive dyes cause serious trouble because they are soluble in water and give a highly coloured effluent.…”

Thermodynamic and kinetic studies of crystal violet dye adsorption with poly(methyl methacrylate)–graphene oxide and poly(methyl methacrylate)–graphene oxide–zinc oxide nanocomposites

“…Nanoparticles are widely use to compare large or atomic counterparts because of their special chemical and physical properties, including their small object, surface, microscopic, and quantum size effects . Zinc oxide (ZnO) powder is broadly applied as an additive in materials and numerous products, including pigments, lubricants, sealants, batteries, ferrites, plastics, fire retardants, rubbers, paints, glass, ceramics, and first‐aid tapes . Also, among different one‐dimensional, nanostructured materials, ZnO nanoparticles as semiconductors show a great band gap with unique properties and structures and have wide applications in various fields, such as solar cells; transistors; field‐effect, light‐emitting diodes; UV lasers of UV; photocatalysis; and chemical sensors …”

“…16,17 Zinc oxide (ZnO) powder is broadly applied as an additive in materials and numerous products, including pigments, lubricants, sealants, batteries, ferrites, plastics, fire retardants, rubbers, paints, glass, ceramics, and first-aid tapes. [18][19][20][21] Also, among different one-dimensional, nanostructured materials, ZnO nanoparticles as semiconductors show a great band gap with unique properties and structures and have wide applications in various fields, such as solar cells; transistors; field-effect, light-emitting diodes; UV lasers of UV; photocatalysis; and chemical sensors. 22,24 The basic violet 3 dye is known as crystal violet (CV).…”

Kinetics adsorption study of the ethidium bromide by graphene oxide as adsorbent from aqueous matrices

“…Recently, many studies have been done on the absorption process and have been compared with classical adsorbents, such as CNTs [9,10], clay [11], activated carbon [12], graphene, and graphene derivatives, such as graphene oxide [13]. Graphene and graphene derivatives are more attractive recently because of their high selectivity, favorable physicochemical stability, and structural diversity.…”