Naomi Halas has pioneered insights into how light and matter interact at small scales, which led to the founding of Houston-based Syzygy Plasmonics. Photo by Jeff Fitlow/Rice University

Naomi Halas, a Rice University professor and co-founder of Syzygy Plasmonics, was elected to the Council of the National Academy of Sciences this month.

The council sets priorities for the nonprofit organization, which advises the federal government on scientific and technical matters. Halas will serve a three-year term on the council, beginning July 1.

“The council’s work is focused on the academy’s national leadership and governance,” Halas said in a news release. “It plays an important role in helping set initiatives and priorities for the scientific community, and in supporting the conditions that allow science to move forward in meaningful ways.”

Halas is best known for her pioneering work in nanophotonics and plasmonics. She helped develop nanoshells, or metal-coated nanoparticles that capture light energy, which have led to innovations in renewable energy, cancer therapy and water purification.

Halas co-founded Syzygy Plasmonics with frequent collaborator and fellow Rice professor Peter Nordlander. The company is developing low-cost, light-driven, all-electric chemical reactors for the sustainable production of hydrogen fuel. It was named to Fast Company's energy innovation list last year.

Syzygy Plasmonics is developing its first commercial-scale biogas-to-sustainable aviation fuel project in Uruguay, known as NovaSAF-1. It secured a six-year offtake agreement for the entire production from the project with Singapore-based commodity company Trafigura this month.

Halas was first elected to become a member of the NAS in 2013, and was shortly after named to the National Academy of Engineering in 2014—making her one of the few scientists to hold both distinctions. She received the Benjamin Franklin Medal in Chemistry last year. Many scientists who have received the award have gone on to win Nobel prizes.

She is also the co-founder of Nanospectra Biosciences and a member of the National Academy of Inventors, the American Academy of Arts and Sciences, and the Royal Danish Academy of Science and Letters. She holds more than 25 patents, according to Rice.

Researchers created a light-driven catalyst for hydrogen production, offering an emission-free alternative to traditional methods. Photo by Jeff Fitlow/Rice University

Houston researchers develop catalyst for emission-free hydrogen production using light instead of heat

switch flipped

Researchers at Rice University have developed a catalyst that could render steam methane reforming, or SMR, entirely emission-free by using light rather than heat to drive the reaction.

The researchers believe the work could prove to be a breakthrough for extending catalyst lifetimes. This will improve efficiencies and reduce costs for a number of industrial processes that are affected by a form of carbon buildup that can deactivate catalysts called coking.

The new copper-rhodium photocatalyst uses an antenna-reactor design. When it is exposed to a specific wavelength of light it breaks down methane and water vapor without external heating into hydrogen and carbon monoxide. The importance of this is it is a chemical industry feedstock that is not a greenhouse gas. Rice’s work also shows that the antenna-reactor technology can overcome catalyst deactivation due to oxidation and coking by employing hot carriers to remove oxygen species and carbon deposits, which effectively regenerates the catalyst with light.

The new SMR reaction pathway build off a 2011 discovery from Peter Nordlander, Rice’s Wiess Chair and Professor of Physics and Astronomy and professor of electrical and computer engineering and materials science and nanoengineering, and Naomi Halas. They are the authors on the study about the research that was published in Nature Catalysis. The study showed that the collective oscillations of electrons that occur when metal nanoparticles are exposed to light can emit “hot carriers” or high-energy electrons and holes that can be used to drive chemical reactions.

“This is one of our most impactful findings so far, because it offers an improved alternative to what is arguably the most important chemical reaction for modern society,” Norlander says in a news release.

The research was supported by Robert A. Welch Foundation (C-1220, C-1222) and the Air Force Office of Scientific Research (FA9550-15-1-0022) with the Shared Equipment Authority at Rice providing data analysis support.

“This research showcases the potential for innovative photochemistry to reshape critical industrial processes, moving us closer to an environmentally sustainable energy future,” Halas adds.

Hydrogen has been studied as it could assist with the transition to a sustainable energy ecosystem, but the chemical process responsible for more than half of the current global hydrogen production is a substantial source of greenhouse gas emissions.Hydrogen is produced in large facilities that require the gas to be transported to its point of use. Light-driven SMR allows for on-demand hydrogen generation,which researchers believe is a key benefit for use in mobility-related applications like hydrogen fueling stations or and possibly vehicles.

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Houston scientists unveil faster, low-energy method to recycle lithium-ion batteries

Battery breakthrough

Rice University researchers have uncovered a more energy-efficient and faster way to recycle critical minerals from used lithium-ion batteries.

Traditional methods rely on high heat, long processing times and harsh chemicals to recover a small fraction of critical materials from batteries used in everything from smartphones to electric vehicles. However, the team from Rice's Department of Materials Science and Nanoengineering developed a process that uses a water-based solution containing amino chlorides to extract more metals in less time

The team published the findings in a recent edition of the scientific journal Small.

Simon King, a sophomore studying chemical and biomolecular engineering who completed this work as a summer research fellow at the Rice Advanced Materials Institute, served as first author of the study. He worked with corresponding authors Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering, and Sohini Bhattacharyya, a research scientist in Ajayan’s lab.

By using a hydroxylammonium chloride (HACI) solution, the team achieved roughly 65 percent extraction of key battery metals in just one minute at room temperature, according to the study. The efficiencies grew to roughly 75 percent for several metals under longer processing times.

“We were surprised by just how fast the reaction occurs, especially without the involvement of high temperatures,” King said in a news release. “Within the first minute, we’re already seeing the majority of the metal extraction take place.”

By not requiring high temperatures or long reaction times, Rice predicts the process could have a major impact on cost and the environmental impact of lithium battery recycling. Additionally, the water-based HACI solution makes waste handling easier and lowers certain environmental risks.

In addition to extracting the materials, the team went on to demonstrate that the recovered metals could be recycled and reprocessed into new battery materials.

“A big advantage of this system is that it works under relatively mild conditions,” Ajayan added in the release. “That opens the door to more sustainable and scalable recycling technologies.”

Houston-area plastics company debuts state-of-the-art headquarters

new hq

Ultra-high-performance plastics company Drake Plastics officially opened its new state-of-the-art, 140,000-square-foot manufacturing center and corporate office in Cypress last month.

Dubbed “Drake HQ, ” the new facility was built to align with Harris County’s clean energy goals and features a 1.3-megawatt solar generation plant designed to offset 50 percent of the plant’s power consumption.

The facility is designed as a “factory ranch,” and is intended to blend in with its natural surroundings. With the expanded campus, Drake says it looks to serve existing and new customers in the semiconductor, aerospace, energy and defense industries.

The new headquarters is designed as a "factory ranch" and features a solar generation plant to offset half of its power consumption. Photo via LinkedIn

“We are thrilled to open the doors of our new headquarters in the area where it all began,” Drake Plastics President Steven Quance said in a news release. “We are honored to have reinvested in the community that has supported our growth and success over the past three decades.”

Drake Plastics cut the ribbon on March 26 at the new facility, which also marked the company’s 30th anniversary in the Cypress area. The company launched in 1996 with four employees and has grown to employ more than 100 staff members, according to a LinkedIn post.

Drake Plastics is a globally recognized leader in ultra-high-performance polymer manufacturing and specializes in extrusion, injection molding, precision machining, machine building, engineering and distribution. According to the company, its new Cypress facilty is one of the largest in the world that processes these high-performance polymers.