Showing Spotlights 1 - 8 of 124 in category Green Nanotechnology (newest first):
Researchers 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
Around 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
Reverse 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
Researchers 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
Carbon 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
Bagasse 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
Researchers 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
To perform a risk assessment of nanomaterials in the environment, information on the exposure, i.e. the amounts that are present in the environment, is essential. In contrast to many other known pollutants, the concentrations of nanomaterials in environmental systems cannot be measured directly. In this situation, exposure modelling is a solution to estimate the environmental exposure with synthetic nanomaterials. In order to predict the amount of a nanomaterial in a certain environmental compartment (environmental exposure) present in a certain area, two basic types of models are required - material flow analysis and environmental behaviour modelling.
Apr 23rd, 2019