Researchers discover highly active organic photocatalyst

Researchers discover highly active organic photocatalyst
Organic catalyst material for photocatalytic hydrogen evolution. Credit: University of Liverpool

Scientists from the University of Liverpool, University College London and East China University of Science and Technology have synthesized a new organic material that can convert water into hydrogen fuel using sunlight.

Photocatalytic solar hydrogen production—or water splitting—offers an abundant clean energy source, but only if the energy in sunlight can be harvested effectively. Inorganic are better known as water splitting catalysts, but organic catalysts can also be built from cheap abundant elements, such as carbon, nitrogen, and sulphur.

The Liverpool-led team has used a combination of experiment and computation to discover a highly active organic photocatalyst. This also revealed some basic design principles, which may guide us to even better catalysts in the future.

Mr Xiaoyan Wang, the Liverpool Chemistry Ph.D. student who led the experimental work, said: "To achieve high hydrogen evolution rates, you need good affinity, broad light adsorption, , and high crystallinity. By introducing all of these features in one material, we got a very active photocatalyst."

Mr Wang's Ph.D. project is co-funded by the China Scholarship Council (CSC) and the University of Liverpool, through a joint Ph.D. programme that started in March 2016.

This programme attracts talented Ph.D. candidates from China to carry out their studies in the world-leading Materials Innovation Factory at the University of Liverpool.

Professor Andrew Cooper FRS, academic lead for the study, said: "This project was a multinational collaboration involving researchers from China, Germany, the Netherlands, and the UK. It is a good example of the vital need to hire the best researchers from all over the world, and to collaborate with teams in other countries. Top-level science is an international endeavour."


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Promising new material has the right properties to capture solar energy, split water into hydrogen and oxygen

More information: Xiaoyan Wang et al, Sulfone-containing covalent organic frameworks for photocatalytic hydrogen evolution from water, Nature Chemistry (2018). DOI: 10.1038/s41557-018-0141-5
Journal information: Nature Chemistry

Citation: Researchers discover highly active organic photocatalyst (2018, October 1) retrieved 24 July 2019 from https://phys.org/news/2018-10-highly-photocatalyst.html
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