Controlled synthesis of graphene oxide/alumina nanocomposites using a new dry sol–gel method of synthesis

A Review on Development of Ceramic-Graphene Based Nanohybrid Composite Systems in Biological Applications

“…Indeed, the absence of bactericidal activity of GO was demonstrated in the presence of E. coli, S. aureus, Bacillus sp. and Sarcina ( Jastrzȩbska et al, 2017b ), which is consistent with other works ( Zhang et al, 2011a ; Wang et al, 2011 ).…”

“…Based on previous results, it was found that Al 2 O 3 nanoparticles should be primarily used as the modifier of bioactive properties of GFMs (Jastrzębska et al, 2017b). The objective was to obtain a material that would combine the beneficial bioactive properties of both GO and nano-Al 2 O 3 .…”

“…Given the abovementioned information, GO is the most interesting 2D nanomaterial in terms of potential bioactivity, including both biocidal properties ( Akhavan and Ghaderi, 2010 ; Hu et al, 2010 ; Kurantowicz et al, 2015 ) and biocompatibility (non-biocidal features) ( Zhang et al, 2011a ; Wang et al, 2011 ). Therefore, three representatives of GFMs such as graphene flake, GO and RGO were compared in ( Jastrzȩbska et al, 2017b ). At a first glance, it becomes clear that the morphology of graphene flakes and GO together with RGO may play a key role in occurring the bio-nano interactions.…”

Multifunctional carbon-supported bioactive hybrid nanocomposite (C/GO/NCP) bed for superior water decontamination from waterborne microorganisms

“…We have also observed that NCPs have had a tendency to agglomeration in larger G cavities, but also on the relatively sharp edges of the GO akes. This effect was also observed in earlier studies on GO/NCPs 21,24,27 and it could be explained by the greater possibility of the attachment of NCP precursor to the exposed area of the GO carrier. This effect could have inuenced the porosity.…”

“…21 23 What is more, by choosing the appropriate ceramic oxide for anchoring Ag nanoparticles to RGO surface, it is possible to control the efficiency of the nanocomposite. 24 It is worth noting that the studies involved in situ reduction of GO to RGO via a chemical reaction between metal alkoxide and terminal functional -OH groups present at theGO surface. Finally, we have revealed that Al 2 O 3 is present in bactericidal RGO/Al 2 O 3 -Ag nanocomposite as an amorphous, highly porous layer covalently bonded to GO surface.…”