Browsing Natural and Agricultural Sciences by Subject "Platinum"
Now showing items 1-10 of 15
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Barriers and opportunities to the implementation of a zero waste to landfill goal – a platinum mining case study
(North-West University (South Africa), 2022)According to Kaza et al (2018:18), the global amount of waste generated on an annual basis has reached 2.01 billion tonnes, with only 30% being diverted away from landfill through re-use, recycling, composting or incineration. ... -
A comparative study between Pt and Rh for the electro-oxidation of aqueous SO₂ and other model electrochemical reactions
(2014)The ever increasing demand for a clean and renewable energy source has stimulated research for alternatives for the use of fossil fuels, which contribute significantly to global warming. The SO2 oxidation reaction was ... -
Electrocatalytic activity of sputtered Pt and Pt3Pd2 thin films for SO2(aq) electro-oxidation
(North-West University, 2018)The ever growing demand for energy and worldwide focus on global warming have dictated the course of research in energy production for the past couple of decades, with much emphasis placed on the need for clean and renewable ... -
An electrochemical investigation of the dissolution of platinum employing AICI3/HNO3
(North-West University, 2014)Industrial activities of mankind are feared to damage the environment irretrievably. Especially the release of huge amounts of harmful gases causes concern. In this regard the environmental pollution caused by the one ... -
An electrochemical study of the oxidation of platinum employing ozone as oxidant and chloride as complexing agent
(North-West University, 2012)Motor car exhaust catalysts are some of the most important users of platinum, and much attention is given to the recycling of scrap platinum from spent exhaust systems. The dissolution of platinum from waste exhausts was ... -
Exposure and effects of platinum and associated metals on the aquatic ecosystems within a platinum mining region
(North-West University (South Africa), 2020)Platinum group elements are precious metals that occur in nature only in trace concentrations. These metals are indispensable for humans due to their unique catalytic properties while they are also resistant to corrosion. ... -
Investigation of Pt supported on carbon, ZrO2, Ta2O5 and Nb2O5 as electrocatalysts for the electro–oxidation of SO2
(North-West University, 2011)The gradual depletion of and dependence on fossil fuels, air pollution and global warming have all accelerated the development of alternative energy systems which use hydrogen as an energy carrier. The hybrid sulphur cycle ... -
Kinetics of the photocatalytic reduction of platinum (IV) in a batch and flow reactor
(North-West University, 2012)Semiconductor photocatalysis has received considerable attention in recent years as an alternative for treating water polluted with hazardous organic chemicals. The process, as a means of removal of persistent water ... -
New insights into the halide-related reactions on platinum surfaces : an electrochemical investigation
(North-West University (South Africa). Potchefstroom Campus, 2019)The results of an electrochemical investigation of polycrystalline platinum are presented. The aim of the study was the elucidation of aspects of the electrochemistry of polycrystalline platinum in 0.5 M sulphuric acid ... -
Optimisation of PtxNiyAlz ratios as thin film electrocatalysts for the oxygen evolution reaction (OER) in alkaline medium
(North-West University (South Africa), 2020)The world is currently reliant on energy sources such as oil, coal and gas (all fossil fuels) for the supply of the global growing energy demand. However, these fossil fuels are diminishing and have drawbacks such as the ...