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device due to insufficient light absorbance was resolved. The second challenge was the stability of the system on light exposure. For this, we placed the sheet under light and noticed that the sample was very stable for several hours. This result signified the robustness of the sample under practical conditions. The final obstacle to overcome was the cost. The estimated cost for the preparation of one blue sheet (2.5 × 1.0 cm2), as we calculated, was approximately eighty rupees. It produced 2.66 μghydrogen and 10.66 μg oxygen every hour continuously. This calculation can be translated to 0.8% conversion of the incident light into chemical fuel, which is H2 in this case. Finally comes the application part; how can we finally apply this initial finding of the artificial blue leaf as the next-generation energy carrier? How is it going to reform the energy scenario of the world? And, that’s our next inspiration. As per my consideration and understanding,
Dr Gayatribahen Joshi || 75
I can place this blue leaf on the roof of every building, using sunlight to convert tap water into hydrogen and oxygen. The light will then turn into electricity, and the hydrogen can be stored and converted into fuel cells. Imagine your house as your power plant providing electricity and gas without causing any harm to the environment. Are you ready to run your cars on water instead of petrol!!!
Water splitting through an artificial blue leaf under light:
This work was carried out under the guidance of Dr. Saumyakanti Khatua and Dr. Arnab Dutta. The article was recently published in ACS Energy Letters: “Plasmonic Gold Nanoprism− Cobalt Molecular Complex Dyad Mimics Photosystem-II for Visible−NIR Illuminated Neutral Water Oxidation” ACS Energy Lett. 2019, 4, 2428−2435.