Browsing Naimah Ibrahim, Assoc. Prof. Dr. by Issue Date
Now showing items 1-6 of 6
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Removal of chromium (VI) from aqueous solution using treated oil palm fibre
(Elsevier B.V, 2007-07-17)This study proposed an oil palm by-product as a low-cost adsorbent for the removal of hexavalent chromium [Cr (VI)] from aqueous solution. Adsorption of Cr (VI) by sulphuric acid and heat-treated oil palm fibre was conducted ... -
Removal of colour from landfill by solar photocatalytic
(Asian Network for Scientific Information, 2010)This study was conducted to examine the percentage of colour removal using coagulation as pretreatment, followed by the effects of ZnO, pH, stirring time and solar photocatalytic as final treatment. The duration of ... -
The role of sodium surface species on oxygen charge transfer in the Pt/YSZ system
(Elsevier Limited, 2012-08-01)The role of sodium surface species in the modification of a platinum (Pt) catalyst film supported on 8 mol% yttria-stabilised-zirconia (YSZ) was investigated under a flow of 20 kPa oxygen at 400°C. Cyclic and linear sweep ... -
The role of low coverage sodium surface species on electrochemical promotion in a Pt/YSZ system
(Elsevier B.V., 2012-10-04)The effect of sodium-modification on the catalyst and electrocatalytic properties of a platinum catalyst supported on a YSZ solid electrolyte was studied. Increasing the sodium coverage on the catalyst surface appears to ... -
Influence of impurities and catalyst surface characteristics on the oxygen charge transfer reaction in the Pt/YSZ system
(Elsevier B.V., 2012-10-04)Spillover processes (i.e. the migration of ionic species from the support to the catalyst and vice versa) are known to play a very important role in catalysis and electrocatalysis. These spillover processes can be influenced ... -
The role of sodium surface species on electrochemical promotion of catalysis in a Pt/YSZ system: The case of ethylene oxidation
(Elsevier Inc., 2013-07)The role of sodium addition as foreign (impurity) species on the electrochemical promotion of ethylene oxidation in a Pt/YSZ system was investigated. It was found that the presence of sodium surface species on the catalyst ...