Scientists discover new way to make fuel from water and sunlight, but more work is needed

Most hydrogen production still relies on natural gas. However, a new technology that uses only sunlight and water could allow humans to wean themselves from fossil fuels and produce cleaner energy. Researchers at Shinshu University in Japan have built a new reactor that can create renewable hydrogen fuel directly from sunlight and water. While this is still an early prototype, the system could eventually provide a way to produce zero-emission fuel cheaply and sustainably.

The 1,076-square-foot reactor uses unique photocatalytic panels to separate water molecules into hydrogen and oxygen. This conversion process is divided into two steps. First, the reactor extracts oxygen. The second step separates the hydrogen atoms. The device can then pump out the hydrogen and store it as a clean-burning fuel to power cars, generators or other machines.

This method differs from today\’s \”one-step\” catalysts, which separate water into hydrogen and oxygen in one go. While traditional methods are simpler, they are also very inefficient because hydrogen fuel requires the use of natural gas to refine it.

Scientists discover new way to make fuel from water and sunlight, but more work is needed

The team initially tested the reactor with ultraviolet light, and the results showed it had promise. Under actual sunlight exposure, it achieved better results, increasing solar energy conversion by about 50%.

This system sounds promising. However, there is a problem. Under standard simulation conditions, the reactor can only convert about one percent of sunlight into hydrogen fuel. This is an improvement over previous attempts, but is still too low for widespread adoption. To make it commercially viable, an efficiency of about 5% would be needed, the researchers noted.

Scientists believe it is crucial to expand the size of the reactor and develop new photocatalysts with higher performance. Achieving feasible efficiencies, however, will require a broader scientific effort focused on improving photocatalyst performance.

Senior author Kazunari Domen said: \”The aspect most in need of development is the efficiency of the photocatalyst in converting solar energy into chemical energy. If this can be improved to a practical level, many researchers will seriously work on large-scale production The development of technology and gas separation processes, as well as the construction of large-scale plants, will also change the way many, including policymakers, view solar energy conversion and accelerate the transition to solar energy.Development of infrastructure, laws and regulations related to solar fuels. \”

Although there are technical hurdles, the concept shows great promise. If scientists can improve the catalysts and scale up the reactors, we could get the most out of two of the most abundant resources on Earth. Get fuel instead of limited fossil fuels

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