ToxEcoGraphene · Assessment of ecocorona acquired by Graphene Family Nanomaterials during exposure to biofilms and fate following uptake

Assessment of ecocorona acquired by Graphene Family Nanomaterials during exposure to biofilms and fate following uptake

The increasing integration of high-performance advanced materials and nanotechnology in everyday life applications imposes a pressing need to shed light not only on the fundamental nanomaterial features and properties, but also on the environmental processes that will determine their distribution and fate in the environment. Graphene Family Nanomaterials (GFN) are undoubtedly some of the most promising nanomaterials developed to date, combining unique features and physicochemical properties that can be exploited in a plethora of applications. Given the serious concerns raised over the potential impact of GFN on the environment, and in order for GFN nanotechnology to develop in a sustainable manner, it is crucial to ensure that development of GFN takes place alongside research focused on its consequences for public health and potential environmental impacts. One major objective of the project was to develop, characterise and utilise GFN-oriented protocols and methods to facilitate investigation of fate and transport in natural complex media. Various physicochemical properties were studied, including the flake dimensions, particulate state, surface chemistry etc. Investigation of GFN fate in natural media has been conducted by focusing on the aggregation kinetics and stability of GFN in aquatic environments. The evaluation of GFN toxicity to biofilms was another objective, by focusing on hetero-aggregation and eco-corona growth on GFN surface and assessing changes in community structures as a function of exposure concentrations and durations. Aquatic systems include a complex heterogeneous plethora of several types of organic molecules, ranging from humic substances to polysaccharides and proteins, briefly described as natural organic matters. Thus, GFN environmental fate, including transport, stability, dissolution, bioavailability, and ecotoxicity is strongly depended on the interaction between them. Another main objective was the implementation of the main research conclusions in order to mitigate identified environmental impact and design-out potential hazards related to GFN technology and applications. Graphene family nanomaterials have a great potential to become a key solution for advanced composite materials with enhanced properties and applicability in a wide range of application sectors. Several crucial aspects related to the impact of GFN and nanomaterials in general need to be addressed through European Union policies and a coherent regulatory framework supported by effective standards.

Data: CORDIS, © European Union