1,720,999 research outputs found
Green Aspects in Molecularly Imprinted Polymers by Biomass Waste Utilization
Full text linkMolecular Imprinting Polymer (MIP) technology is a technique to design artificial receptors with a predetermined selectivity and specificity for a given analyte, which can be used as ideal materials in various application fields. In the last decades, MIP technology has gained much attention from the scientific world as summarized in several reviews with this topic. Furthermore, green synthesis in chemistry is nowadays one of the essential aspects to be taken into consideration in the development of novel products. In accordance with this feature, the MIP community more recently devoted considerable research and development efforts on eco-friendly processes. Among other materials, biomass waste, which is a big environmental problem because most of it is discarded, can represent a potential sustainable alternative source in green synthesis, which can be addressed to the production of high-value carbon-based materials with different applications. This review aims to focus and explore in detail the recent progress in the use of biomass waste for imprinted polymers preparation. Specifically, different types of biomass waste in MIP preparation will be exploited: chitosan, cellulose, activated carbon, carbon dots, cyclodextrins, and waste extracts, describing the approaches used in the synthesis of MIPs combined with biomass waste derivatives
A green method for the production of an efficient bioimaging nanotool
No full textThe possibility of exploring basic biological phenomena requires the development of new and efficient bioimaging tools. These should ideally combine the feasibility of production (potentially through the use of green chemistry) together with high targeting efficiency, low cytotoxicity, and optimal contrast characteristics. In this work, we developed nanovesicles based on cardanol, a natural and renewable byproduct of the cashew industry, and a fluorescent reporter was encapsulated in them through an environment-friendly synthesis method. In vitro investigations demonstrated that the cardanol nanovesicles are efficiently taken-up by both professional and non-professional phagocytic cells, which have been modeled in our approach by macrophages and HeLa cells, respectively. Co-localization studies show high affinity of the nanovesicles towards the cell plasma membrane. Moreover, metabolic assays confirmed that these nanostructures are biocompatible in a specific concentration range, and do not promote inflammation response in human macrophages. Stability studies carried out at different temperatures showed that the nanovesicles are stable at both 37 C and 20 C, while the formation of aggregates occurs when the nanodispersion is incubated at 4 C. The results demonstrate the high potential of fluorescent cardanol nanovesicles as a green bioimaging tool, especially for investigating cell membrane dynamics
SYNTHESIS, CHARACTERIZATION AND BINDING STUDIES OF WATER COMPATIBLE ION IMPRINTED POLYMER AS SORBENT MATERIALS FOR HG(II) REMOVAL FROM WATER
No full textDevelopments of New Hg(II)-Imprinted Polymer Beads: Adsorption Performances And Morphological Characterization
No full textEnvironmental problems associated with water pollution, are today a serious problem that has
attracted great attention of the global community. In particular, the release of various harmful
heavy metal ions owing to industrial and agricultural processes represent today the main cause of
pollution [1]. Mercury is one of the most hazardous elements for human health for its relatively
solubility in water and living tissues. Common methods used for mercury separation from water
samples include, liquid-liquid extraction [2], solid-liquid extraction [3], flotation [4] and membrane
filtration [5] Moreover, many synthetic polymers opportunely functionalized by impregnation [6],
grafting of commercial sorbents [7] or of home-made polymers [8] were prepared. However, a good
selectivity is difficult to achieve with the previously mentioned materials. For this reason, highly
selective Hg(II) imprinted polymers were prepared using different synthesis approaches and a
correlation between the adsorption behavior and morphological characteristics of all polymers was
made. Finally, selectivity studies using a mixture of different metal ions, were carried out
DESIGN OF NEW PORPHYRIN/ FE-LOADED TIO2 COMPOSITES FOR THE EFFICIENT DEGRADATION OF 4-NITROPHENOL BY HETEROGENEOUS PHOTO FENTON PROCESSES
No full textPreparation of Novel Hybrid Materials Containing Bioactive Compounds Embedded in Cardanol-Based Vesicular Nanodispersions
No full textCardanol (CA) is a natural and renewable organic raw material obtained as the major by-product from the distillation of cashew nut shell liquid (CNSL). Thanks to its amphiphilic properties under alkaline conditions, was developed an environmental-friendly technology to produce engineered “green nanocarriers”, without use of any organic solvents, in which CA acts as the solvent as well as being the main component of the nanodispersions
Green Nanocarriers for Epithelial Tumours Treatment
No full textNanotechnology has been utilized recently in medicine for the development of Drug Delivery
Systems able to alter the kinetic profile of drug release that is very important in the administration
of therapies for long periods as chemotherapy treatments, preventing damages to the normal
surrounding tissue.
This work aims to test new types of engineered green nanocarriers produced by an environmentalfriendly
procedure for epithelial tumors treatment. Epithelial cancer is the largest single cause of
death in both men and women, claiming over 6 million lives each year worldwide. For this reason,
recently nanotechnology is attracting great interest in the search for new cancer therapies
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