Nanotechnology Spotlight Articles – Category Green Nanotechnology, page 1 | Nanowerk

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Showing Spotlights 1 - 8 of 125 in category Green Nanotechnology (newest first):

 

Combining data-driven science and computational chemistry can significantly accelerate materials discovery

Siloxanes - a class of manufactured silicone derivatives, also know as silicones - are widely used (with an annual volume of 2.8 million tonnes in 2018) in medicine and industrial applications, mostly though in cosmetics and personal care products. However, siloxanes can also be organic contaminants that are persistent and prone to bio accumulation, making it challenging to remove them from various environmental media. Developing suitable sorbents is a cost-effective solution for the removal of siloxanes and Machine Learning offers a powerful tool to identify the effective zeolites out of many millions.

Apr 21st, 2020

Powering up bacteria for green electricity

bioelectricityResearchers have identified the potential of using nanoscale carbon dots on bacteria for augmented bioelectricity production. They used this to demonstrate a novel method for significantly increasing the bacterial bioelectricity generation and applied it to set up microbial fuel cells. The results show that carbon dots' highly conductive carbon core not only improved overall systemic electrical conductivity but could also increase the packing density of the electron transfer path. This significantly improves the bioelectricity production of microbial fuel cells.

Mar 19th, 2020

Super lightweight foam uses sunlight to harvest water from evaporation

rising-vaporAround the world, research teams are addressing the rising global demand of water via the development of sustainable and straightforward technologies that make use of what nature has to offer. Researchers have now reported a hydrophilic and self-floating photothermal foam that shows high-rate evaporation without additional components, enabling an elegant and simple approach for water harvesting through solar evaporation. This photothermal foam enables an elegant and simple approach for water harvesting by utilizing energy from natural sunlight.

Mar 10th, 2020

Metal-organic frameworks as high-performance water desalination membranes

desalinationReverse osmosis (RO) is one of the most effective desalination technologies for producing freshwater from seawater. The reverse osmosis membrane water reclamation processes is very energy intensive - not exactly an advantage given the rising cost of energy and the negative climate impact of fossil fuels. In a new study, researchers found that metal-organic frameworks (MOF) allow higher water flux compared to other 2D materials while rejecting almost 100% of unwanted ions.

Dec 11th, 2019

Transforming the greenhouse gas carbon dioxide into graphene

grapheneResearchers have produced graphene by molten carbonate electrolytic splitting of CO2 to a nano-thin carbon product (carbon nanoplatelets) comprised of 25 to 125 graphene layers, and subsequent electrochemical exfoliation of the nanoplatelets to graphene in a carbonate soluble aqueous solution. The sole products of the carbon dioxide electrolysis are straightforward: high yield carbon nanoplatelets and oxygen. The carbon nanoplatelets provide a thinner starting point than a conventional graphite reactant to facilitate electrochemical exfoliation.

Dec 2nd, 2019

'Diamonds from the sky' chemistry converts greenhouse gas into valuable nanocarbon materials

nanoonionsCarbon nano-onions (CNOs), a less studied morphology of carbon nanomaterials, are exotic structures with extraordinary properties and numerous applications. These applications have been largely ignored due to their high synthesis cost. Researchers now have produced inexpensive, stable carbon-nano onions directly from carbon dioxide. The carbon dioxide reactant replaces nano-diamonds as the reactant to form the nano-onions. The source of CO2 to produce these CNOs can be the consumption of industrial flue gas or CO2 directly captured from the air.

Jul 19th, 2019

Turning agricultural biowaste into high-value 3D-printing materials

sensorBagasse is a waste plant matter obtained by food industry processes with major potential for several high-value products. An innovative idea of utilizing bagasse is for production of nanocellulose and testing this for wound dressing devices, manufactured by 3D printing. The next step in the development of wound dressings is the personalized aspect of the biomaterials, i.e. wound dressings that are structured and composed of constituents specially selected for a specific wound and wound treatment. Furthermore, sensors could be integrated into wound dressings and thus monitor various aspects of wound development, e.g. moisture and exudates in chronic wounds.

Jun 3rd, 2019

Nanotechnology for the preservation of cultural heritage

stone_cherubResearchers a new strategy for designing Pickering emulsion based on halloysite nanotubes and exploring chitosan and pectin as thickener additives for the development of cleaning and preservation applications for cultural heritage. This novel and facile strategy to prepare hydrogel containing oil-in-water stable emulsion offers an alternative route to prepare formulations with high performance and based on sustainable materials for the controlled cleaning and preservation of stone-based artworks.

May 8th, 2019