Science & Technology

Nanoscale photocatalysts are small, man-made particles that harvest energy from sunlight to produce liquid fuels and other useful chemicals. A new imaging solution developed at Washington University in St. Louis reveals the significance of a particular structural feature — clusters of oxygen vacancies — in achieving high photocatalytic activity.

Chemists in Arts & Sciences have re-engineered one of nature’s solar cells to drive electrons down an alternate path. This work advances the understanding of the earliest light-driven events of photosynthesis and is published in the Proceedings of the National Academy of Sciences.

In a Dec. 10 briefing on Capitol Hill, chemist Sophia Hayes of Washington University in St. Louis and an expert on helium testified that steep price increases and “supply shocks” threaten basic research in academic settings. Shortages will also lead to broader health and industry applications, she said.

Researchers in Jonathan Barnes’ laboratory in Arts & Sciences have developed a new light-sensitive hydrogel with improved biocompatibility compared with similar materials. Down the line, these materials may be particularly suited for medical uses like prosthetics or transplantable organs.

Kevin Moeller, professor of chemistry in Arts & Sciences, will receive a 2020 Arthur C. Cope Scholar Award for excellence in organic chemistry. The Cope Scholar Award is a national award sponsored by the Arthur C. Cope Fund and administered by the American Chemical Society. Only 10 recipients each year receive the award.

With a $1.2 million grant from NASA, Randall Martin in the McKelvey School of Engineering at Washington University in St. Louis will lead a team of researchers working to improve a high-performance climate model, making it more accurate and more accessible.

The NSF Center for Sustainable Polymers (CSP) has been awarded a $20 million grant renewal from the National Science Foundation in support of its research. The CSP, based at the University of Minnesota, partners with researchers from around the country, including William Tolman in Arts & Sciences.

Researchers from Arts & Sciences have solved the X-ray crystal structure of the enzyme that makes obafluorin — a broad spectrum antibiotic agent made by a fluorescent strain of soil bacteria. This new class of antibiotics might provide a powerful antidote to the growing scourge of antibiotic resistance.

Researchers in Arts & Sciences made an energy storage device that can withstand a hammer striking it more than 40 times. The shatterproof supercapacitor is also nonflammable, unlike lithium-ion batteries. The new work is the cover story of the April 23 issue of the journal Sustainable Energy and Fuels.

Helium is a valuable, non-renewable resource that is critical for many medical and research applications. But helium supply and pricing are unreliable. Sophia Hayes, a professor of chemistry in Arts & Sciences, spoke at a recent American Chemical Society webinar about the need for congressional action to address these challenges.