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Title: Synthesis of well structured carbon nanotubes using tailored mesoporous materials by CVD and their application towards fabrication of nanocomposite
Researcher: Atchudan R
Guide(s): Pandurangan, A.
Keywords: Nanotubes, Nanocomposite, fabrication, mesoporous materials
Upload Date: 5-Aug-2013
University: Anna University
Completed Date: 
Abstract: Carbon is the most versatile element in the periodic table, owing to the type, strength and number of bonds it can form with many different elements. The diversity of bonds and their corresponding geometries enable the existence of structural isomers, geometric isomers and enantiomers. Carbon nanostructures have attracted a great deal of interest due to the discovery of fullerenes. Widely recognized as the quintessential nanomaterial, carbon nanotubes (CNTs) have already compiled an impressive list of superlatives since their discovery in 1991 by Sumio Iijima. The present study involves hydrothermal synthesis of Si-MCM-41, Cr-MCM-41, Fe-MCM-41, Zn-MCM-41 and Zn-Fe-MCM-41 molecular sieves with Si/M ratios of 50, 75, 100 and 125, where M = Cr, Fe, Zn and Zn-Fe. The transition metals such as Fe, Co, Mn, Ni, Ti, Ru and Pd were loaded with 0.2 wt. % individually over Cr-MCM-41 by wet impregnation method. The growth of SWCNTs or MWCNTs was carried out using the above synthesized catalytic materials by CVD method using acetylene as carbon precursor. In general, neat epoxy resins pose some major disadvantages such as low peel, low impact and tensile strength at elevated temperatures and also low chemical resistance. The thermo-mechanical properties of the neat epoxy resin have been improved by the addition of MWCNTs or f-MWCNTs. The fabricated epoxy resins with MWCNTs and f-MWCNTs were compared with one another to study the dispersion behaviour. The experimental research work reveals that the above said metal containing mesoporous MCM-41 and KIT-6 materials can be a convenient eco-friendly alternative to all other catalyst for the formation of SWCNTs and MWCNTs with high quality and large quantity. Especially, metal containing mesoporous KIT-6 materials were suitable candidate for the large scale production of well graphitized MWCNTs. Fabricated nanocomposites by using MWCNTs/f-MWCNTs exhibited good thermo-mechanical properties which might be a good opening for new avenues to various industrial applications. newline
Pagination: xxvi, 208
Appears in Departments:Faculty of Science and Humanities

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01_title.pdfAttached File47.79 kBAdobe PDFView/Open
02_certificates.pdf1.23 MBAdobe PDFView/Open
03_abstract.pdf20.3 kBAdobe PDFView/Open
04_acknowledgement.pdf15.64 kBAdobe PDFView/Open
05_contents.pdf61.96 kBAdobe PDFView/Open
06_chapter 1.pdf1.72 MBAdobe PDFView/Open
07_chapter 2.pdf609.8 kBAdobe PDFView/Open
08_chapter 3.pdf5.77 MBAdobe PDFView/Open
09_chapter 4.pdf35.15 kBAdobe PDFView/Open
10_referneces.pdf77.49 kBAdobe PDFView/Open
11_publications.pdf33.52 kBAdobe PDFView/Open
12_vitae.pdf16.8 kBAdobe PDFView/Open

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