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Home > Press > Artificial photosynthesis could help make fuels, plastics and medicine

The raw materials for everyday products could someday be produced by bacteria and solar energy. 
Credit: Image Source White/Image Source/Thinkstock
The raw materials for everyday products could someday be produced by bacteria and solar energy.

Credit: Image Source White/Image Source/Thinkstock

Abstract:
The global industrial sector accounts for more than half of the total energy used every year. Now scientists are inventing a new artificial photosynthetic system that could one day reduce industry's dependence on fossil fuel-derived energy by powering part of the sector with solar energy and bacteria. In the ACS journal Nano Letters, they describe a novel system that converts light and carbon dioxide into building blocks for plastics, pharmaceuticals and fuels -- all without electricity.

Artificial photosynthesis could help make fuels, plastics and medicine

Washington, DC | Posted on April 29th, 2015

Peidong Yang, Michelle C. Y. Chang, Christopher J. Chang and colleagues note that plants use photosynthesis to convert sunlight, water and carbon dioxide to make their own fuel in the form of carbohydrates. Globally, this natural process harvests 130 Terawatts of solar energy. If scientists could figure out how to harness just a fraction of that amount to make fuels and power industrial processes, they could dramatically cut our reliance on fossil fuels. So, Yang, Michelle Chang and Christopher Chang's teams wanted to contribute to these efforts.

The groups developed a stand-alone, nanowire array that captures light and with the help of bacteria, converts carbon dioxide into acetate. The bacteria directly interact with light-absorbing materials, which the researchers say is the first example of "microbial photoelectrosynthesis." Another kind of bacteria then transforms the acetate into chemical precursors that can be used to make a wide range of everyday products from antibiotics to paints.

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The authors acknowledge funding from the U.S. Department of Energy, the Lawrence Berkeley National Laboratory, Howard Hughes Medical Institute, the National Science Foundation and the National Institutes of Health.

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About American Chemical Society
The American Chemical Society is a nonprofit organization chartered by the U.S. Congress. With more than 158,000 members, ACS is the world's largest scientific society and a global leader in providing access to chemistry-related research through its multiple databases, peer-reviewed journals and scientific conferences. Its main offices are in Washington, D.C., and Columbus, Ohio.

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Contacts:
Michael Bernstein

202-872-6042

Peidong Yang, Ph.D.
Department of Chemistry
University of California, Berkeley
Berkeley, CA 94720

or
Michelle C. Y. Chang, Ph.D.
Department of Chemistry
University of California, Berkeley
Berkeley, CA 94720

or
Christopher J. Chang, Ph.D.
Department of Chemistry
University of California, Berkeley
Berkeley, CA 94720

Copyright © American Chemical Society

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