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Browsing by Author "Segakweng, T"

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Comparison of MOF-5- and Cr-MOF-derived carbons for hydrogen storage application

Author: Segakweng, T ; Musyoka, Nicholas M ; Ren, Jianwei ; Crouse, P ; Langmi, Henrietta W Date: Nov 2015 Nanoporous carbons which possess high surface areas and narrow pore size distributions have become one of the most important classes of porous materials with potential to be utilized for hydrogen storage. In recent times, several metal–organic ... Read more
Microwave-assisted modulated synthesis of zirconium-based metal–organic framework (Zr-MOF) for hydrogen storage applications

Author: Ren, Jianwei ; Segakweng, T ; Langmi, Henrietta W ; Musyoka, Nicholas M ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: May 2014 Zirconium-based metal–organic framework (Zr-MOF) was synthesized using a microwave-assisted modulated method in a short reaction time of 5 min. The Zr-MOF material was highly crystalline with well-defined octahedral shaped crystals, and it ... Read more
Modulated synthesis of chromium-based metal-organic framework (MIL-101) with enhanced hydrogen uptake

Author: Ren, Jianwei ; Musyoka, Nicholas M ; Langmi, Henrietta W ; Segakweng, T ; North, Brian C ; Mathe, Mahlanyane K ; Kang, X Date: Aug 2014 Modulated synthesis of MIL-101(Cr) in high yield and with good reproducibility using formic acid as a modulator is reported. Higher molar ratio of formic acid/CrCl(sub3) was found to form better shape-defined MIL-101(Cr) crystals with higher ... Read more
Modulated synthesis of Cr-MOF (MIL 101) for hydrogen storage applications

Author: Segakweng, T Date: Aug 2014 With the increasing environmental pressures, alternative sources of energy are required. Hydrogen has long been considered to be an ideal alternative to fossil fuel system owing to its elimination of greenhouse gasses. Complete usage of ... Read more
Ni foam-immobilized MIL-101(Cr) nanocrystals toward system integration for hydrogen storage

Author: Ren, Jianwei ; Segakweng, T ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K Date: Oct 2015 Metal–organic framework (MOF) materials are only obtained as loose powders with low packing density and thermal conductivity. To enable the developed MOF powdered materials to be utilized in a hydrogen storage system, in this study, MIL-101 ... Read more
Thermal treatment induced transition from Zn3(OH)2(BDC)2 (MOF-69c) to Zn4O(BDC)3 (MOF-5)

Author: Ren, Jianwei ; Rogers, DEC ; Segakweng, T ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: 2013 A simple thermal treatment induced transition from Zn3(OH)2(BDC)2 (MOF-69c) to Zn4O(BDC)3 (MOF-5) is reported. Phase crystallinity, pore characteristics and hydrogen storage capacities of the resulting crystals were investigated. It is shown ... Read more
Zirconium-Based metal organic framework (Zr-MOF) material with high hydrostability for hydrogen storage applications

Author: Ren, Jianwei ; Segakweng, T ; Langmi, Henrietta W ; North, Brian C ; Mathe, Mahlanyane K ; Bessarabov, D Date: Sep 2013 Material-based solutions, such as metal organic frameworks (MOFs), continue to attract increasing attention as viable options for hydrogen storage applications. MOFs are widely regarded as promising materials for hydrogen storage due to their ... Read more

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Browsing by Author "Segakweng, T"

Browsing by Author "Segakweng, T"

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