Scientists pioneer novel model to turn sunlight into fuel
London, Sep 4 : In a breakthrough move, British scientists have used natural sunlight to convert water into hydrogen and oxygen by mixing biological components and man-made technologies.
The team led by academics at the University of Cambridge, used semi-artificial photosynthesis to explore new ways to produce and store solar energy, a finding that could now be used to revolutionise the systems used for renewable energy production.
Their method also managed to absorb more solar light than natural photosynthesis.
"Natural photosynthesis is not efficient because it has evolved merely to survive so it makes the bare minimum amount of energy needed -- around 1-2 per cent of what it could potentially convert and store," said lead author Katarzyna Soko, doctoral student at the University's St. John's College.
Artificial photosynthesis has been around for decades but it has not yet been successfully used to create renewable energy because it relies on the use of catalysts, which are often expensive and toxic. This means it cannot yet be used to scale up findings to an industrial level.
The new model, detailed in the journal Nature Energy, is the first to successfully use hydrogenase and photosystem II to create semi-artificial photosynthesis driven purely by solar power.
The team not only improved on the amount of energy produced and stored, they managed to reactivate a process in the algae that has been dormant for millennia.
"Hydrogenase is an enzyme present in algae that is capable of reducing protons into hydrogen. During evolution this process has been deactivated because it wasn't necessary for survival but we successfully managed to bypass the inactivity to achieve the reaction we wanted -- splitting water into hydrogen and oxygen," Soko explained.
Soko hopes the findings will enable new innovative model systems for solar energy conversion to be developed.
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AI, AI Express look to add capacity amid IndiGo flight disruptions
New Delhi (PTI): Air India Group is looking to add capacity to help passengers impacted by the IndiGo flight disruptions.
"Since 4 December, economy class airfares on non-stop domestic flights have been proactively capped to prevent the usual demand-and-supply mechanism being applied by revenue management systems," a statement said on Saturday.
Both Air India and Air India Express have put in place caps on economy class fares.
ALSO READ: IndiGo cancels over 200 flights from Delhi, Mumbai on Saturday
The statement from Air India came hours after the government announced introduction of airfare caps amid IndiGo flight disruptions.
Air India also said it is not technically possible to cap fares for all flight permutations.
"Air India and Air India Express are seeking to add capacity to help travellers and their baggage reach their destinations as quickly as possible," the statement said.
