Scientists from the UK, Germany and Australia have successfully converted carbon dioxide (CO2) into methanol, a green fuel, using a new technique that they have developed. The research involved chemists from the University of Birmingham, the University of Ulm, the University of Queensland and was led by scientists at the School of Chemistry at the University of Nottingham.
The new approach does not require the use of hydrogen, as is the case of the existing methods of converting CO2 into useful products. It employs a technology called photocatalysis, in which light is shone on a semiconductor material, so exciting electrons and allowing them to move through the material and react with CO2 and water. This produces a range of useful products, including methanol. But, hitherto, this process has suffered from inefficiency and inadequate selectivity.
The research team has successfully developed a new material, composed of individual copper atoms anchored to, or nested within, nanocrystalline carbon nitrate structures. This allows electrons to move from the carbon nitrate to the CO2. This is essential to allow the production of methanol from CO2, using sunlight to trigger the reaction.
This research has opened the way to the development of extremely selective and tuneable catalysts, which would allow the ‘dialling up’ of the desired product, through control of the catalyst at the nanoscale.
The research has been funded by the UK’s Engineering and Physical Sciences Research Council, under its ‘Metal Atoms on Surfaces and Interfaces for a sustainable future’ (MASI) programme. MASI is focused on the development of catalyst materials to convert CO2, hydrogen and ammonia molecules, which are critically important in both economic and environmental terms, while ensuring the sustainable use of the chemical elements that make up the catalysts.
Tags: Carbon dioxide, CO2, Methanol
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