cleaning up nuclear energy

Houston research team discovers new application for crystals in nuclear energy

Radioactive waste is an obstacle to nuclear energy adoption potential. This research team from the University of Houston has discovered a potential solution. Photo via uh.edu

Researchers at the University of Houston have unlocked a new way to use crystals to safely dispose of radioactive waste.

The team of UH researchers published a paper in Cell Reports Physical Science this month detailing their discovery of how to use molecular crystals to capture large quantities of iodine, one of the most common products of radioactive fission, which is used to create nuclear energy.

According to a statement from UH, these molecular crystals are based on cyclotetrabenzil hydrazones. Ognjen Miljanic, professor of chemistry and author of the paper, and his team have created the organic molecules containing only carbon, hydrogen and oxygen atoms, which create ring-like crystals with eight smaller offshoots, earning them the nickname "The Octopus."

The discovery was made by Alexandra Robles, the first author of the study and a former doctoral student in Miljanic’s lab.

The crystals have an uptake capacity similar to that of porous metal-organic frameworks (MOFs) and covalent organic frameworks (COFs), which traditionally have been considered the “pinnacle of iodine capture materials," according to UH. They allow iodine to be moved from one area to another, are reusable and can be produced using commercially available chemicals for about $1 per gram in an academic lab.

“They are quite easy to make and can be produced at a large scale from relatively inexpensive materials without any special protective atmosphere,” Miljanic said in a statement.

The team also believes the crystals can be used to capture additional elements like carbon dioxide.

“This is a type of simple molecule that can do all sorts of different things depending on how we integrate it with the rest of any given system,” Miljanic continued. “So, we’re pursuing all those applications as well.”

Next up, Miljanic is looking to find a partner that will help the team explore practical applications and commercial aspects.

UH has been making net-zero news lately. A team of students from UH placed in the top three teams in a national competition for the Department of Energy earlier this summer. The college also shared details about its forthcoming innovation hub, which will house UH's Energy Transition Institute, as well as other centers and programs.

Joseph Powell, founding director of UH's Energy Transition Institute, sat down with EnergyCapitalHTX last week to talk about UH's vision for the organization.

Ognjen Miljanic is a University of Houston professor of chemistry and author of the paper. Photo via UH.edu

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A View From HETI

Ten young professionals have been named to the Offshore Technology Conference's 2025 Emerging Leaders class. Photo via Linkedin.

Four Houston professionals have been named to the Offshore Technology Conference's 2025 Emerging Leaders class.

The group of 10 represents individuals with less than 10 years of experience who have "demonstrated exceptional talent, commitment, and promise as future leaders in the offshore energy sector," according to a release from OTC. They were recognized at the annual conference, which was held May 5-8 at NRG Center.

Each year, Emerging Leaders are selected by the previous year’s group and are members of an OTC sponsoring, endorsing or supporting organization. While a number hail from the Houston area, this year's group is comprised of energy professionals from all over the world.

“This year’s leaders have a clear passion for the industry, are eager to play a role in its future, and serve as inspiration to others through their exemplary commitment to excellence and pursuit of new horizons.” Alex Martinez, chair of the OTC Board, said in a news release.

The 2025 Houston-area Emerging Leaders include:

  • Ellen Reat Wersan, an exploration geoscientist at Chevron
  • Brooke Polk, vice president-accreditation operations at the International Association of Drilling Contractors
  • Zheng Fan, assistant professor in the mechanical engineering technology department at the University of Houston
  • Scott Pisarik, lead materials and corrosion engineer at Chevron

Other recipients included:

  • Yingda Lu, assistant professor in the petroleum and geosystems engineering department at The University of Texas at Austin
  • Olusola Komolafe, project engineer at Geosyntec Consultants Inc.
  • Gabriel Correa Perocco, project manager at MODEC do Brasil
  • Sridhar Krishnamoorthy, senior research fellow and PhD research scholar at the Indian Institute of Technology Madras Chennai India
  • Daniel Toerner, technical sales engineer at Bardex Corp.
  • Olawale Ajayi, reservoir engineer at NNPC Limited

OTC concluded last week and brought together energy professionals, policymakers and scholars from more than 100 countries while showcasing more than 1,000 companies. Sessions featured prominent energy execs, including Oxy president and CEO Vicki Hollub from Houston and Brazil-based Petrobras' president Magda Chambriard. According to OTC, the event has generated $1.6 billion in income for Houston’s economy since 2010.

"From the latest technology to generation-changing policy discussions, this year’s success reflects the industry’s commitment to shaping the future of energy, advancing innovations and fostering global collaboration," Martinez added in a statement.

OTC 2026 will take place May 4-7, 2026, at NRG Center in Houston.

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