Scientists have found that a common enzyme can speed up—by 500 times—the rate-limiting part of the chemical reaction that helps the Earth lock away, or sequester, carbon dioxide in the ocean.

“While the new paper is about a basic chemical mechanism, the implication is that we might better mimic the natural process that stores carbon dioxide in the ocean,” says lead author Adam Subhas, a California Institute of Technology (Caltech) graduate student.

Simple problem, complex answer

The researchers used isotopic labeling and two methods for measuring isotope ratios in solutions and solids to study calcite—a form of calcium carbonate—dissolving in seawater and measure how fast it occurs at a molecular level.

It all started with a very simple, very basic problem: measuring how long it takes for calcite to dissolve in seawater.

“Although a seemingly straightforward problem, the kinetics of the reaction is poorly understood,” says Berelson, professor of earth sciences at the University of Southern California Dornsife College of Letters, Arts, and Sciences.

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Brett Lucht is a professor of chemistry at the University of Rhode Island, where his research focuses on organic materials chemistry. Lucht’s research includes the development of novel electrolytes for lithium-ion batteries and other efforts to improve the performance of electrolytes for electric vehicles. Lucht has recently been named associate editor for the Journal of The Electrochemical Society.

The Electrochemical Society: What do you hope to accomplish in your new role as associate editor?

Brett Lucht: I hope to improve the prestige of the journal. While the Journal of The Electrochemical Society is the oldest journal of electrochemical science, competition from other journals has become fierce.  The Electrochemical Society is the largest scientific organization focused on electrochemistry and ECS meetings are very well attended. Thus publishing electrochemical research in the Journal of The Electrochemical Society should be the most prestigious place to publish.

ECS: Why should authors publish in ECS journals?

BL: The Journal of The Electrochemical Society has been in continuous production since 1902—115 years. While many new journals come and go, they are frequently focused on narrow topics which fluctuate in importance.  Publications in the Journal of The Electrochemical Society will last the test of time.  In my area of research, lithium-ion batteries, many new journals are publishing research in this area. However, many of the fundamental research articles providing the foundation for this field were published in the Journal of The Electrochemical Society.

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By: Elton Santos, Queen’s University Belfast

Scientists have found a way to make carbon both very hard and very stretchy by heating it under high pressure. This “compressed glassy carbon”, developed by researchers in China and the US, is also lightweight and could potentially be made in very large quantities. This means it might be a good fit for several sorts of applications, from bulletproof vests to new kinds of electronic devices.

Carbon is a special element because of the way its atoms can form different types of bonds with each other and so form different structures. For example, carbon atoms joined entirely by “sp³” bonds produce diamond, and those joined entirely by “sp²” bonds produce graphite, which can also be separated into single layers of atoms known as graphene. Another form of carbon, known as glassy carbon, is also made from sp² and has properties of both graphite and ceramics.

But the new compressed glassy carbon has a mix of sp³ and sp² bonds, which is what gives it its unusual properties. To make atomic bonds you need some additional energy. When the researchers squeezed several sheets of graphene together at high temperatures, they found certain carbon atoms were exactly in the right position to form sp³ bonds between the layers.

By studying the new material in detail, they found that just over one in five of all its bonds were sp³. This means that most of the atoms are still arranged in a graphene-like structure, but the new bonds make it look more like a large, interconnected network and give it greater strength. Over the small scale of individual graphene sheets, the atoms are arranged in an orderly, hexagonal pattern. But on a larger scale, the sheets are arranged in a disorderly fashion. This is probably what gives it the combined properties of hardness and flexibility.

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The global development of industry, technology, and the transportation sector has resulted in massive consumption of fossil fuels. As these fuels are burned, emissions are released—namely carbon dioxide. According to the U.S. Environmental Protection Agency, combustion of petroleum-based products resulted in 6,587 million metric tons of carbon dioxide released into the environment in 2015. But what if we could capture the greenhouse gas and not only convert it, but potentially make a huge profit?

That’s exactly what ECS member Stuart Licht is looking to do.

In a new study, Licht and his team demonstrate using carbon dioxide and solar thermal energy to produce high yields of millimeter-lengths carbon nanotube (CNT) wool at a cost of $660 per ton. According to marketplace values, these CNTs, which have applications ranging from textiles to cement, could then be sold for up to $400,000 per ton.

“We have introduced a new class of materials called ‘Carbon Nanotube Wool,’ which are the first CNTs that can be directly woven into a cloth, as they are of macroscopic length and are cheap to produce,” Licht, a chemistry professor at George Washington University, tells Phys.org. “The sole reactant to produce the CNT wools is the greenhouse gas carbon dioxide.”

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In May 2017 during the 231st ECS Meeting, we sat down with 2016-2017 ECS Toyota Young Investigator Fellowship winner, Elizabeth Biddinger, to discuss green chemistry, sustainable engineering, and the future of transportation. The conversation was led by Amanda Staller, ECS’s web content specialist.

Biddinger is an assistant professor at the City College of New York, part of the City University of New York system. There, she leads a research group that covers research areas ranging from electrocatalysis to ionic liquids. Her work in switchable electrolytes earned her a spot among the 2016-2017 fellowship winners.

Listen to the podcast and download this episode and others for free on Apple Podcasts, SoundCloud, Podbean, or our RSS Feed. You can also find us on Stitcher and Acast.

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Researchers have created a concentrating photovoltaic (CPV) system with embedded microtracking that is capable of producing 50 percent more energy per day than the standard silicon solar cells.

“Solar cells used to be expensive, but now they’re getting really cheap,” says Chris Giebink, an assistant professor of electrical engineering at Penn State.

“As a result, the solar cell is no longer the dominant cost of the energy it produces. The majority of the cost increasingly lies in everything else—the inverter, installation labor, permitting fees, etc.—all the stuff we used to neglect,” he says.

This changing economic landscape has put a premium on high efficiency. In contrast to silicon solar panels, which currently dominate the market at 15 to 20 percent efficiency, concentrating photovoltaics focus sunlight onto smaller, but much more efficient solar cells like those used on satellites, to enable overall efficiencies of 35 to 40 percent.

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ECS believes that the key to sustainability is the ability to adapt. For over 115 years, ECS has been committed to publishing high quality, peer-reviewed research at the cutting edge of innovation.

But the demands of the research arena are always changing. As the scientific community develops new needs out in the field, so must ECS—as a leading nonprofit publisher—develop new avenues and more inclusive platforms for publication and dissemination.

To best accommodate the needs of contemporary scientific research, ECS’s journals, the Journal of The Electrochemical Society and the ECS Journal of Solid State Science and Technology, are open to article submission types beyond that of the standard-issue research paper. As of 2017, ECS accepts journal submissions of five different types.

Whether you’re an author, an editor, or a reader of ECS publications, it’s beneficial to be familiar with the five ECS journal article types.

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Lithium-ion batteries power a vast majority of the world’s portable electronics, from smartphones to laptops. A standard lithium-ion batteries utilizes a liquid as the electrolyte between two electrodes. However, the liquid electrolyte has the potential to lead to safety hazards. Researchers from MIT believe that by using a solid electrolyte, lithium-ion batteries could be safer and able to store more energy. However, most research in the area of all-solid-state lithium-ion batteries has faced significant barriers.

According to the team from MIT, a reason why research into solid electrolytes has been so challenging is due to incorrect interpretation of how these batteries fail.

This from MIT:

The problem, according to this study, is that researchers have been focusing on the wrong properties in their search for a solid electrolyte material. The prevailing idea was that the material’s firmness or squishiness (a property called shear modulus) determined whether dendrites could penetrate into the electrolyte. But the new analysis showed that it’s the smoothness of the surface that matters most. Microscopic nicks and scratches on the electrolyte’s surface can provide a toehold for the metallic deposits to begin to force their way in, the researchers found.

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Researchers are using genetically engineered E. coli to power micromotors, with the swimming bacteria causing the motors to rotate in a similar fashion to a river rotating a watermill.

“Our design combines a high rotational speed with an enormous reduction in fluctuation when compared to previous attempts based on wild-type bacteria and flat structures,” says Roberto Di Leonardo, co-author of the new research. “We can produce large arrays of independently controlled rotors that use light as the ultimate energy source. These devices could serve one day as cheap and disposable actuators in microrobots for collecting and sorting individual cells inside miniaturized biomedical laboratories.”

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A new issue of ECS Transactions (ECST) has just been published. This issue incorporates 333 papers from the upcoming 15th International Symposium on Solid Oxide Fuel Cells (SOFC-XV). This conference will be held in Hollywood, Florida, USA, July 23-28, 2017.

ECST Volume 78, Issue 1 is now available in the ECS Digital Library. This issue is also available for purchase as an electronic (PDF) edition through the ECS Online Store.

Learn more about this upcoming conference and find out more about ECST.