Global warming is a serious threat to the planet and living beings. One of the main causes of global warming is the increase in the atmospheric CO2 level. The main source of this CO2 is from the burning of fossil fuels in our daily lives (electricity, vehicles, industry and many more).
Researchers at TIFR have developed the solution phase synthesis of dendritic plasmonic colloidosomes (DPCs) with varying interparticle distances between the gold nanoparticles (NPs) using a cycle-by-cycle growth approach by optimizing the nucleation-growth step. These DPCs absorbed the entire visible and near-infrared region of solar light, due to interparticle plasmonic coupling as well as the heterogeneity in the Au NP sizes, which transformed gold material to black gold.
Black (nano)gold was able to catalyze CO2 to methane (fuel) at atmospheric pressure and temperature, using solar energy. Researchers also observed the significant effect of the plasmonic hotspots on the performance of these DPCs for the purification of seawater to drinkable water via steam generation, temperature jump assisted protein unfolding, oxidation of cinnamyl alcohol using pure oxygen as the oxidant, and hydrosilylation of aldehydes.
The results were attributed to varying interparticle distances and particle sizes in these DPCs. Results indicate the synergistic effects of EM and thermal hotspots as well as hot electrons on DPCs performance. Thus, DPC catalysts can effectively be utilized as Vis-NIR light photo-catalysts, and the design of new plasmonic nanocatalysts for a wide range of other chemical reactions may be possible using the concept of plasmonic coupling.
Raman thermometry and SERS (surface-enhanced Raman spectroscopy) provided information about the thermal and electromagnetic hotspots and local temperatures which was found to be dependent on the interparticle plasmonic coupling. The spatial distribution of the localized surface plasmon modes by STEM-EELS plasmon mapping confirmed the role of the interparticle distances in the SPR (Surface Plasmon Resonance) of the material.
Image Credit: Science News
News This Week
Researchers at the Nanoscience Center and Faculty of Information Technology in the University of Jyväskylä, Finland, have achieved a significant step forward in predicting atomic structures of hybrid nanoparticles. A research article published in [...]
Nanomedical Device and Systems Design: Challenges, Possibilities, Visions now available to rent on Kindle
To accommodate students who wish to read the book at an affordable cost, Nanomedical Device and Systems Design: Challenges, Possibilities, Visions by Frank Boehm (CEO NanoApps Medical Inc.) is available to rent on Kindle. This book benefits [...]
Tools that detect cancer in its early stages can increase patient survival and quality of life. However, cancer screening approaches often call for expensive equipment and trips to the clinic, which may not be [...]
The blood-brain barrier is a physiological boundary layer that works highly selectively and thus protects the brain: On the one hand, pathogens or toxins are effectively prevented from penetrating the brain, on the other [...]
Intro to Industry 4.0: The Ultimate Guide by Ferry Vermeulen Industry is changing a lot these days. New concepts and systems pop-up continuously, and due to companies’ need to implement the best technology, a [...]
“Artificial Intelligence” is currently the hottest buzzword in tech. And with good reason - after decades of research and development, the last few years have seen a number of techniques that have previously been [...]
The 21st century has ushered in a new age where all aspects of our lives are impacted by technology. How will humanity anticipate, mitigate, and manage the consequences of AI, robots, quantum computing and [...]
Babylon, a UK start-up, plans to "put an accessible and affordable health service in the hands of every person on earth" by putting artificial intelligence (AI) tools to work. Currently, the company [...]
If you’ve ever tried to swat a fly, you know that insects react to movement extremely quickly. A newly created biologically inspired compound eye is helping scientists understand how insects use their compound eyes [...]
A tiny bristle worm, wriggling around the ocean, can extend its jaw outside its mouth to ensnare its prey. The worm’s shape-shifting jaw, stiff at the base and flexible at the end, is made [...]
What if you didn’t need surgery to implant a pacemaker on a faulty heart? What if you could control your blood sugar levels without an injection of insulin, or mitigate the onset of a [...]