Category Chemistry/Nanotechnology

Scientists Transform Algae into Unique Functional Perovskites with Tunable Properties

Calcitic shells of the dinoflagellate L. granifera. A) The calcitic shells of L. granifera exhibiting a porous ultrastructure. B) A single shell of L. granifera. C) Raman spectrum from a single shell confirming its calcitic nature. D) Electron back-scattering diffraction (EBSD) map and E) a corresponding (0001) pole figure of a single polished shell demonstrating that it consists of single crystalline domains where the c-axis of calcite is pointing radially from the center of the shell outwards. The colors in (E) correlate with similarly colored areas in (D). Scale bars: (A) 50 µm, (B) 5 µm and (D) is 5 µm.

Perovskites are materials that are increasingly popular for a wide range of applications because of their remarkable electrical, optical, and photonic properties...

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‘Game-changing’ findings for Sustainable Hydrogen Production

Hydrogen

Hydrogen fuel could be a more viable alternative to traditional fossil fuels according to University of Surrey researchers who have found that a type of metal-free catalysts could contribute to the development of cost-effective and sustainable hydrogen production technologies.

The study has shown promising results for the use of edge-decorated nanocarbons as metal-free catalysts for the direct conversion of methane, which is also a powerful greenhouse gas, into hydrogen. Among the nano carbons investigated, nitrogen-doped nano carbons presented the highest level of performance for hydrogen production at high temperatures.

Crucially, the researchers also found that the nitrogen-doped and phosphorus-doped nano carbons had strong resistance to carbon poisoning, which is a common is...

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Plasma-Structural Coloring: A New Colorful approach to an Inkless Future

(a) Scheme illustrating the “plasma-structural coloring”; (b) The picture of a letter “A” written by a pencil; (c) The picture of the sample after the plasma irradiation for 80 seconds.

Classic graphite pencils can be used and transformed into colorful works using plasma irradiation, without a drop of colored ink used. New developments for achieving structural coloring through plasma irradiation of graphite can reduce the reliance upon harmful color dyes. Colors achieved by plasma irradiation are completely erasable and can be manipulated using time exposed to the plasma irradiation, intensity of the irradiation and the thickness of the graphite layer applied...

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Farewell to ‘forever’: Destroying PFAS by Grinding it up with a new Additive

Abstract Image
Solvent-Free Nonthermal Destruction of PFAS Chemicals and PFAS in Sediment by Piezoelectric Ball Milling

Per- and polyfluoroalkyl substances (PFAS) are potentially harmful substances known as “forever chemicals” because they are so difficult to destroy. One emerging technique to degrade PFAS involves forcefully grinding them with metal balls in a moving container, but this technique can require corrosive additives. Now, in Environmental Science & Technology Letters, researchers report a new type of additive for “ball milling” that completely breaks down PFAS at ambient temperature and pressure.

Solid PFAS contamination is an ongoing issue for soil near waste sites, manufacturing sites, and facilities that frequently use firefighting foam. Currently, the U.S...

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