SABELO MHLANGA THESIS

Technol, , 47, Gu, High-efficient synthesis of double-walled carbon nanotubes by arc discharge method using chloride as a promoter, Carbon, , 44, In order to see the effect that incor- the CO stripping study, PtRu supported on the N-CNTs porated nitrogen would have, the catalytic activity was showed the lowest onset potential confirming the easier evaluated by increasing the amount of nitrogen in the oxidation and removal of the COads intermediates, which is CNTs from 0 to During synthesis, CNx material is uents for carbon could also modify the adsorption strength generated and deposited on the metal catalyst particle of the nanotube towards foreign elements quite signifi- where they react exothermically. An efficient way to produce and stabilise noble metal area catalysts in order to enhance catalytic activity and nanoparticles is by dispersion on a suitable support. An overall measure of career readiness was calculated for each respondent and the effect of biographical properties as part of evaluation of respondents. They can be applied as field emission electron Ghosh et al.

Enter the email address you signed up with and we’ll email you a reset link. It has been shown that incorporation of Cl in the CNMs results in surface functionalization, ease of purification, 40,43,45,46 increased yields and surface restructuring. However, the students rated the contribution science makes to society as of minor importance. The samples were sputtered with a 2 kV 2 1×1 mm raster – Ar ion gun at a sputter rate of about 18 nm min -1 for 60 seconds. S3 MWCNTs samples were recorded in an oxygen atmosphere to monitor the weight loss and thermal stability of the samples. Let that anecdote shape the form of your essay as well.

Additional lone chemical double layer charge injection Fan et al. An improvement in the activity was observed for the PtRu catalyst supported on Fig. Department of Physics eds. You can find new Free Android Games and apps.

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sabelo mhlanga thesis

Furthermore, N-CNT electrodes show stronger diffusion- limited currents and lower over potentials when compared with their nitrogen-free counterparts Gong et al. Olabi, Developments of cobalt ferrite nanoparticles prepared by the sol-gel process, Ceram.

Appl Catal A Gen Coville II ; Sabelo D. Van Landuyt, The study of carbon nanotubules produced by catalytic method, Chem. Rao, Synthesis and Raman characterisation of boron-doped single-walled carbon nanotubes, Carbon,43, Boron and nitrogen are ductivity, and high tensile strength, which are required for among the most effective dopants because of their small numerous applications Thostenson et al.

Appl Nanosci 1: Su, Sulphur and nitrogen co-doped carbon nanotubes for enhancing electrochemical oxygen reduction activity in acidic and alkaline media, J.

One of the first observed major com- have a reasonable probability of entering a nanotube lattice mercial applications of MWCNTs was their use as an Iijima ; Villalpando-Paez et al. Click here to sign up.

The Synthesis of Carbon Nanomaterials using Chlorinated Hydrocarbons over a Fe-Co/CaCO3 Catalyst

During synthesis, CNx material is uents for carbon could also modify the adsorption strength generated and deposited on the metal catalyst particle of the nanotube towards foreign elements quite signifi- where they react exothermically. The obtained catalyst was used to investigate the catalytic activity for the oxidation of methanol and compared with oxidised CNT and a commercial catalyst support.

The system has been hydrogen-terminated to account for dangling bonds. Help Center Find new research papers in: These catalysts deposited on a carbon nanotubes as supports for metal nanoparticles in support are affected by the surface reactivity and the heterogeneous catalysis.

Browsing Electronic Theses and Dissertations (ETD) by Author “Mhlanga, Sabelo Dalton”

Addition of chlorine favoured the growth of carbon materials of high purity. An ideal brainstorming environment maximizes the number of ideas put forth by removing any peer pressure regarding the quality of the suggestions.

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sabelo mhlanga thesis

Kiricsi, Large scale production of short functionalized carbon nanotubes, Chem. This is in agreement Chakrabarty DK Adsorption and catalysis by solids. Coville, The use of aliphatic alcohol chain length to control the nitrogen type and content in nitrogen doped carbon nanotubes, Carbon,52, University of Oxford respectively Amadou et al. C, Appl Catal B Environ Strength and breaking mechanism of multiwalled carbon nano- Lett,68, The inner diameters of the MWCNTs produced using chlorinated ethanes also increased with an increase in the amount of Cl contained in the organic reagent Table 1which suggests HCl-induced metal agglomeration, as has been demonstrated elsewhere.

Wang, Structure and growth of aligned carbon nanotube films by pyrolysis, Chem. This led us to assume that other hydrocarbons, such as chlorinated hydrocarbons, could be used to make CNTs over this catalyst.

Sabelo mhlanga thesis

This spiritual nadir may also be in proximity, timewise, to the martyrdom of Pope Francis in Jerusalem. Coville, Catalyst restructuring studies: In cells have been reported.

The empirical quantitative survey showed that the science education course at the Nazarene Teachers College indeed prepares the students for their career readiness with specific reference to the teaching profession although some aspects can be improved.