Scientists discover new method for generating metal nanoparticles to use as catalysts
A team of researchers from the ITACA Institute of the Universitat Politècnica de València (UPV) and the Research Institute of Chemical Technology, a joint center of the Spanish National Research Council (CSIC) and the UPV, has discovered a new method for the manufacture of metal nanocatalysts that is more sustainable and economical.
With great potential in the industrial sector, the method would contribute to the decarbonization of industry. The work has been published in the journal ACS Nano.
This new method is based on the exsolution process activated by microwave radiation. Exsolution is a method of generating metallic nanoparticles on the surface of ceramic materials. "At elevated temperatures and in a reducing atmosphere (usually hydrogen), metal atoms migrate from the structure of the material to its surface, forming metal nanoparticles anchored to the surface. This anchoring significantly increases the strength and stability of these nanoparticles, which positively impacts the efficiency of these catalysts," explains Beatriz García Baños, a researcher in the Microwave Area of the ITACA Institute at the UPV.
Isidor Isaac Rabi was born on July 29, 1898. An American physicist, he won the Nobel Prize in Physics in 1944 for his discovery of nuclear magnetic resonance, which is used in magnetic resonance imaging (MRI). He was also one of the first scientists in the United States to work on the cavity magnetron, which is used in microwave radar and microwave ovens. In 1942, Oppenheimer attempted to recruit Rabi to work at the Los Alamos Laboratory on a new secret project. He declined, but did work as a consultant on the Manhattan Project.
two finds! here’s a cameo set of a necklace and earrings i bought at a local thrift store called THRIFT & GLITZ, and this HUGE FUCKING MICROWAVE at a goodwill.
hi i own a microwave, and sadly in addition to not being the sharpest tool in the shed he is also painfully unaware of the fact he is very heavy. this normally would not be a problem however recently he has taken up sitting on my chest every time i take a nap and staring at me until I get up. why does he do this? is he bored? is he hungry? please help.
make sure to shut him out whenever you take a nap! he probably sees that you're taking a nap and wants to join you, you can also try using treats to encourage him to stay off of you while napping.
So today I learned that my father, a goddamn electrical engineer, is a fucking liar. He did that weird parent over-lying for safety thing (think: having the car light on while the car is moving) and has consistently lied to me for years that leaving a spoon in a microwave makes the microwave explode when the spoon flies out of it.
Fun fact it does nothing! Secondary fun fact Google says at worst it might spark!
Squid-inspired soft material is a switchable shield for light, heat, microwaves
With a flick of a switch, current technologies allow you to quickly change materials from being dark to light, or cold to hot, just by blocking or transmitting specific wavelengths. But now, inspired by squid skin, researchers in ACS Nano report a soft film that can regulate its transparency across a large range of wavelengths—visible, infrared and microwave—simultaneously. They demonstrated the material in smart windows and in health monitoring and temperature management applications.
Unique to the skin of squid and other cephalopods, iridocytes and chromatophores reversibly change their orientation and alter the animals' appearance. Similarly, scientists have developed artificial materials that transition from reflecting to transmitting visible and infrared wavelengths by shifting from wrinkly to cracked. Because microwaves are much larger than these surface structures, they aren't impacted.
However, researchers recently found that dense networks of electrically conductive materials, such as silver nanowires, could block microwaves. So, Yi Yang, Guangbin Ji, Zhichuan J. Xu and colleagues wanted to integrate surface structures with a conductive network in a soft film that could quickly transition between shielding visible-to-microwave bands and allowing them through.