Nanotechnology Spotlight – Latest Articles

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Showing Spotlights 1 - 8 of 119 in category Green Nanotechnology (newest first):

 

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

Estimating the occurrence of nanomaterials in the environment

nanomaterialsTo 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

Eggshell membranes from bio waste could be harvesters for green energy

eggshellIn new work, researchers explore inexpensive, biodegradable and daily-waste eggshell membrane as a novel bio-piezoelectric material for harvesting green energy. The uniqueness of our work lies in the novelty of directly utilizing natural eggshell membranes as efficient piezoelectric material. This simple, innovative approach could provide huge benefits for research in future energy science, especially with regard to in vivo biomedical applications.

Jun 12th, 2018

All-natural nanobiotechnology instead of synthetic agrochemicals

nanoemulsionWidespread use of synthetic agrochemicals in crop protection has led to serious concerns of environmental contamination and increased resistance in plant-based pathogenic microbes. In an effort to develop bio-based and non-synthetic alternatives, nanobiotechnology researchers are looking to plants that possess natural antimicrobial properties. In new work, researchers show that nanoscale thymol's antibacterial and antifungal properties not only prevent plant disease but that it also enhances plant growth.

May 4th, 2018

Energy-saving windows made from common glass and cheap nanocrystals

windowsOne of the main challenges for energy efficient technologies is to lower their cost by making cheap energy-efficient materials and devices by preferably using green manufacturing technologies. For example, commercial infrared-blocking windows, both passive and active, are simply too expensive (most of these IR-blocking windows contain an expensive silver coating) and they are not used in the majority of our homes. One approach to this problem involves creating passive infrared-blocking glasses using plasmonic nanocrystals. Researchers have demonstrated that nanocrystals of relatively inexpensive plasmonic materials show an overall good performance as IR-blocking elements.

Apr 27th, 2018

How to eliminate a graphene oxide 'oil spill' accident

graphene-kaolin_complexCarbon nanomaterials, including graphene-based materials, are widely gaining popularity in practical applications of nanomanufacturing. As a result, it becomes more and more likely that the unwanted introduction of such materials into the environment may occur. In particular, aqueous habitats might be severely affected by any accidental carbon nanomaterials exposure. Researching these potential environmental toxicity effects, scientists have found that kaolin, a cheap and abundant clay, can act as a powerful antidote to remediate the toxic effects of graphene oxide.

Apr 25th, 2018

Carbon nanotube wools for greenhouse gas mitigation and bullet-proof clothing

carbon_nanotube_woolTurning atmospheric carbon dioxide (CO2) into valuable products seems like a great idea to help remove this greenhouse gas to mitigate climate change. Using a process of molten carbonate electrolytic transformation of CO2 to carbon nanotubes, researchers have now demonstrated 'carbon nanotube wool'. These are the first carbon nanotubes that can be directly woven into a cloth as they are of macroscopic length (over 1mm) and are cheap to produce. The sole reactant to produce the carbon nanotube wools is carbon dioxide. This transforms CO2 from a pollutant into a useful, valuable resource.

Jul 18th, 2017