By Bhaskar Pyakurel
The prospect of creating clean, renewable hydrogen fuel is closer than ever after a breakthrough in our understanding of photosynthesis. Professors Rob Stranger and Ron Pace from the Research School of Chemistry in the ANU College of Physical and Mathematical Sciences used computer modelling to reveal the molecular structure of the photosynthesis reaction site in plants. This is where sunlight is used to convert water into its components - hydrogen and oxygen. For the first time, they have identified the specific water molecules in a plant's photosystem that are converted into oxygen. Their results, published in Angewandte Chemie , are important for the insight they offer into how we could develop an alternative fuel source from water by mimicking the natural photosynthetic process. "The part of the plant's photosystem that is important to this process is called the oxygen-evolving-complex (OEC)," said Stranger. "If we can steal nature's secrets and understand how the OEC performs its chemistry, then we can learn to make hydrogen much more efficiently.
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