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Home » Carbon Dioxide (CO2), Feedstocks, India, Process, R & D Focus, University/College Programs

Indian Researchers Create an Artificial Leaf Which Consumes Sunlight and Carbon Dioxide to Produce Energy

Submitted by on June 18, 2018 – 1:08 pmNo Comment

by Amit Jha (Crazy Engineers)  Researchers at the Indian Institute of Science, Bangalore have found a novel approach to produce energy by using sunlight and carbon dioxide. By using a collection of quantum dots made up of Copper Aluminium Sulphate and Zinc Sulphide, researchers were able to convert salts of carbon dioxide under visible sunlight. The research provides a breakthrough in using carbon dioxide as a source of fuel and thus, has a potential to reduce the carbon footprint and carbon dioxide emission throughout the world.

The researchers took their inspiration from the plant leaves which via a process of photosynthesis produces chemical energy and oxygen using carbon dioxide under sunlight. The plants have chlorophyll inside their leaves which absorbs typically the red rays from the sunlight and traps excited photons to perform the process of photosynthesis. The sunlight, however, has green and blue rays as well in large quantity which is not at all utilized by the leaves during the photosynthetic process. Researchers, thus, started to look for elements that can absorb these rays and can mimic the photosynthetic process with higher efficiency.

The team found Copper Aluminium Sulphate and Zinc Sulphide quantum dots as the ideal candidate because they have better conductivity and are biocompatible and inexpensive in nature. By using these quantum dots, they were able to significantly improve the energy conversion process by up to 20% compared to a natural leaf that is capable of only 1% of the incident energy conversion.  READ MORE

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