(Press-News.org) Bisphenols are widely used as the main raw material for plastics such as receipts, water bottles, water containers, and vinyl due to their heat-resistant and mechanochemical properties. Among bisphenols, bisphenol A (BPA) that we often refer to as an "endocrine-disrupting chemicals" has been linked to adverse effects on reproduction, development, intelligence, and various metabolic diseases. Bisphenol F (BPF), a recently developed alternative to BPA Bisphenol A has also been reported in the literature to cause neurological disruption and various health risks.
Dr. Jong Min Kim of the Materials Architecturing Research Center, Dr. Sang Soo Han of the Computational Science Research Center, Dr. Sang Hoon Kim of the Extreme Materials Research Center at Korea Institute of Science and Technology (KIST), and Professor Byeong-Kwon Ju of the School of Electrical Engineering at Korea University have fabricated high-performance cobalt single-atom catalysts through a chemical-free and environmentally friendly dry-based arc plasma deposition process. The team applied it to an electro-Fenton process based on electrochemical hydrogen peroxide synthesis to remove harmful bisphenols from aqueous solutions in a short time.
The arc plasma process vaporizes metals or ceramics with repeated pulsed voltages in a vacuum, depositing them as a thin film on the surface of the substrates, and the number of pulses can be controlled to create a deposited layer with the desired thickness or properties. The cobalt single-atom catalyst fabricated by the arc plasma process exhibited the world's highest metal single-atom loading (2.24 wt%) compared to previously reported single-atom loading of dry processes (around 1 wt%). The coordination structure and active sites of the prepared Co single-atom catalyst were characterized by various material analyses including computational science, and electrochemical measurements confirmed that it is an excellent single-atom catalyst for electrochemical hydrogen peroxide production.
The researchers applied the Co single-atom catalyst as an electrode to supply hydrogen peroxide in real time in the electro-Fenton water treatment process, and found that it could rapidly degrade 100% of BPF at a targeted concentration of 20 ppm in aqueous solution within 5 minutes. Through repeated experiments and wastewater treatment tests, the stability of the catalyst and the removal of bisphenol compounds were verified, and based on this, it is expected to be applied to the removal of emerging pollutants in wastewater treatment plants in large cities or specific industrial wastewater treatment facilities.
"This achievement is significant in that we have produced high-performance single-atom catalysts in a dry process that does not use harmful chemicals and applied them to the water treatment field," said Dr. Jong Min Kim of KIST, while Dr. Sang Hoon Kim of KIST said, "Research on the production of metal nanoparticles by arc plasma deposition is widely known, but this is the first study to show that single-atom deposition is possible.“
###
KIST was established in 1966 as the first government-funded research institute in Korea. KIST now strives to solve national and social challenges and secure growth engines through leading and innovative research. For more information, please visit KIST’s website at https://eng.kist.re.kr/
The research was supported by the Ministry of Science and ICT (Minister Lee Jong-ho) through the KIST Major Project and Nanomaterial Technology Development Project (NRF-2022M3H4A7046278) and the Ministry of Environment. This research was published online on July 5 in the SCI journal Carbon Energy (IF: 19.5, JCR: 3.8%).
END
Rapid removal of emerging endocrine disruptors in wastewater using high-performance single-atom catalysts
Developing high-performance single-atom catalysts through chemical-free dry processes and computational science. Rapid removal of bisphenol, an endocrine disruptor, in water treatment process
2024-08-13
ELSE PRESS RELEASES FROM THIS DATE:
Starvation and adhesion drive formation of keratinocyte patterns in skin
2024-08-13
Cell–cell adhesion-induced patterning in keratinocytes can be explained by just starvation and strong adhesion, Hokkaido University researchers find.
Fingerprints are one of the best-recognised examples of pattern formation by epithelial cells. The primary cells in the epithelium are the keratinocytes, and they are known to form patterns at the microscopic and macroscopic levels. While factors affecting this pattern formation have been reported, the exact mechanisms underlying the process are still not fully understood.
A team of researchers, led by Associate ...
Ships now spew less sulfur, but warming has sped up
2024-08-13
RICHLAND, Wash.—Last year marked Earth’s warmest year on record. A new study finds that some of 2023’s record warmth, nearly 20 percent, likely came as a result of reduced sulfur emissions from the shipping industry. Much of this warming concentrated over the northern hemisphere.
The work, led by scientists at the Department of Energy’s Pacific Northwest National Laboratory, published today in the journal Geophysical Research Letters.
Regulations put into effect in 2020 by the International Maritime Organization required a roughly 80 percent reduction in the sulfur content of shipping ...
Rice-built reactor yields green ammonia and purified water
2024-08-13
HOUSTON – (Aug. 12, 2024) – Ammonia plays a critical role in sustaining food production for the world’s growing population, but making it accounts for about 2% of global energy consumption and 1.4% of carbon dioxide emissions. Rice University engineers have developed a revolutionary reactor design that could decarbonize ammonia production while also mitigating water pollution.
In a study published in Nature Catalysis, a team of Rice engineers led by Haotian Wang described the development of a new reactor system that converts nitrates — common pollutants found in industrial wastewater and ...
Think fast — or not: FSU research describes mathematics behind decision making
2024-08-13
New research from a Florida State University professor and colleagues explains the mathematics behind how initial predispositions and additional information affect decision making.
The research team’s findings show that when decision makers quickly come to a conclusion, the decision is more influenced by their initial bias, or a tendency to err on the side of one of the choices presented. If decision makers wait to gather more information, the slower decision will be less biased. The work was published today in Physical Review E.
“The basic result might ...
Largest study of its kind finds common lab tests aren’t reliable for diagnosing Long COVID
2024-08-13
A new study found that most routine laboratory tests are not reliable for diagnosing Long COVID, also known as Post-Acute Sequelae of SARS-CoV-2 infection (PASC).
The study, published today in Annals of Internal Medicine, found no reliable biomarker among 25 routine clinical laboratory values for prior infection, PASC or specific types of PASC clusters. This suggests none of these routine labs can serve as a clinically useful biomarker of PASC.
"Our study shows patients can have severe Long COVID with normal lab results. This ...
Engineers make tunable, shape-changing metamaterial inspired by vintage toys
2024-08-12
Common push puppet toys in the shapes of animals and popular figures can move or collapse with the push of a button at the bottom of the toys’ base. Now, a team of UCLA engineers has created a new class of tunable dynamic material that mimics the inner workings of push puppets, with applications for soft robotics, reconfigurable architectures and space engineering.
Inside a push puppet, there are connecting cords that, when pulled taught, will make the toy stand stiff. But by loosening these cords, the “limbs” of the toy will go limp. Using the same cord tension-based principle that controls a puppet, researchers have developed a new type of metamaterial, a material ...
Start-up Whisper Aero uses the ORNL Summit supercomputer to test concepts for an ultraquiet electric airplane
2024-08-12
From a nondescript industrial building in the small town of Crossville, Tennessee, the team of engineers at Whisper Aero is planning a revolution in aviation technology.
Previously home to a publisher of magazines — including, coincidentally, Trade-A-Plane, an airplane sales publication started in 1937 — the long-empty property’s cavernous spaces are now filled with multidisciplinary activities that include the creation of a new electric aircraft engine.
In January 2024, employees of the 3-year-old start-up moved into their new headquarters, refurbishing its dusty rooms into a 21st century aerospace technology facility with areas ...
New study unveils 16,000 years of climate history in the tropical Andes
2024-08-12
PROVIDENCE, R.I. [Brown University] — A new study that explores ancient temperatures and rainfall patterns in the tropical Andes of South America has revealed how 16,000 years of climate history in this part of the world was driven by carbon dioxide levels and ocean currents from global climate events.
Led by Brown University researchers, the study marks the first high-resolution temperature record covering the past 16,000 years in the tropical Andes and could help scientists predict and mitigate future climate impacts in tropical regions of the planet. The work is described in the Proceedings of the National Academy of Science.
“Usually ...
The Society of Huntsman Translational Scholars welcomes two more members
2024-08-12
Huntsman Cancer Institute and the University of Utah (the U) are proud to announce the induction of two physician-scientists, Heloisa Soares, MD, PhD, and Skyler Johnson, MD, as members of The Society of Huntsman Translational Scholars.
The Society of Huntsman Translational Scholars supports scientists who focus on translating research discoveries made in the lab into innovations that improve outcomes for cancer patients. Scholars receive financial support for their scientific work, have opportunities for mentorship, and collaborate with other society members in advancing scientific discoveries.
“The Society of Huntsman Translational Scholars ...
UMass Amherst researchers create new method for orchestrating successful collaboration among robots
2024-08-12
AMHERST, Mass. – New research from the University of Massachusetts Amherst shows that programming robots to create their own teams and voluntarily wait for their teammates results in faster task completion, with the potential to improve manufacturing, agriculture and warehouse automation. This research was recognized as a finalist for Best Paper Award on Multi-Robot Systems at the IEEE International Conference on Robotics and Automation 2024.
“There’s a long history of debate on whether we want to build a single, powerful humanoid robot that can do all ...
LAST 30 PRESS RELEASES:
Sensitive ceramics for soft robotics
Trends in hospitalizations and liver transplants associated with alcohol-induced liver disease
Spinal cord stimulation vs medical management for chronic back and leg pain
Engineered receptors help the immune system home in on cancer
How conflicting memories of sex and starvation compete to drive behavior
Scientists discover ‘entirely unanticipated’ role of protein netrin1 in spinal cord development
Novel SOURCE study examining development of early COPD in ages 30 to 55
NRL completes development of robotics capable of servicing satellites, enabling resilience for the U.S. space infrastructure
Clinical trial shows positive results for potential treatment to combat a challenging rare disease
New research shows relationship between heart shape and risk of cardiovascular disease
Increase in crisis coverage, but not the number of crisis news events
New study provides first evidence of African children with severe malaria experiencing partial resistance to world’s most powerful malaria drug
Texting abbreviations makes senders seem insincere, study finds
Living microbes discovered in Earth’s driest desert
Artemisinin partial resistance in Ugandan children with complicated malaria
When is a hole not a hole? Researchers investigate the mystery of 'latent pores'
ETRI, demonstration of 8-photon qubit chip for quantum computation
Remote telemedicine tool found highly accurate in diagnosing melanoma
New roles in infectious process for molecule that inhibits flu
Transforming anion exchange membranes in water electrolysis for green hydrogen production
AI method can spot potential disease faster, better than humans
A development by Graz University of Technology makes concreting more reliable, safer and more economical
Pinpointing hydrogen isotopes in titanium hydride nanofilms
Political abuse on X is a global, widespread, and cross-partisan phenomenon, suggests new study
Reintroduction of resistant frogs facilitates landscape-scale recovery in the presence of a lethal fungal disease
Scientists compile library for evaluating exoplanet water
Updated first aid guidelines enhance care for opioid overdose, bleeding, other emergencies
Revolutionizing biology education: Scientists film ‘giant’ mimivirus in action
Genetic variation enhances cancer drug sensitivity
Protective genetic mutation offers new hope for understanding autism and brain development
[Press-News.org] Rapid removal of emerging endocrine disruptors in wastewater using high-performance single-atom catalystsDeveloping high-performance single-atom catalysts through chemical-free dry processes and computational science. Rapid removal of bisphenol, an endocrine disruptor, in water treatment process