Bioinspired Polydopamine Sheathed Nanofibers Containing Carboxylate Graphene Oxide Nanosheet for High-Efficient Dyes Scavenger

Abstract

New hierarchical bioinspired nanocomposite materials of poly­(vinyl alcohol)/poly­(acrylic acid)/carboxylate graphene oxide nanosheet@polydopamine (PVA/PAA/GO-COOH@PDA) were successfully prepared by electrospinning technique, thermal treatment, and polydopamine modification. The obtained composite membranes are composed of polymeric nanofibers with carboxylate graphene oxide nanosheets, which are anchored on the fibers by heat-induced cross-linking reaction. The preparation process demonstrate eco-friendly and controllable manner. These as-formed nanocomposites were characterized by various morphological methods and spectral techniques. Due to the unique polydopamine and graphene oxide containing structures in composites, the as-obtained composite demonstrate well efficient adsorption capacity toward dye removal, which is primarily due to the specific surface area of electrospun membranes and the active polydopamine/graphene oxide components. In addition, the composite membranes reported here are easy to regenerate. In comparison with other composite adsorbents, the preparation process of present new composite materials is highly eco-friendly and facile to operate and regulate, which demonstrates potential large-scale applications in wastewater treatment and dye removal.

Graphene Oxide Immobilized PLGA‐polydopamine Nanofibrous Scaffolds for Growth Inhibition of Colon Cancer Cells

“…However, because many aromatic rings are contained within PDA and GO, strong π–π interactions can easily form between them, which can also enhance the adsorption of PDA toward GO. These π–π interactions were reported by Xing et al …”

Fabrication of tunable hierarchical MXene@AuNPs nanocomposites constructed by self-reduction reactions with enhanced catalytic performances

“…5, the thermal stability of MXene and MXene@AuNPs composite was evaluated by TG, which is an important technique to investigate functional nanocomposite materials [52][53][54][55][56]. TG results show the final heat loss at 650°C, in which the maximum mass loss of MXene@AuNPs60 is about 12.3%, followed by MXene@AuNPs20, MXene@AuNPs5, and MXene.…”

Surfactant-Free Synthesis of Reduced Graphene Oxide Supported Well-Defined Polyhedral Pd-Pt Nanocrystals for Oxygen Reduction Reaction

“…The rGO, which was obtained by the exfoliation of graphite [23][24][25], possesses two-dimensional (2-D) conjugated π bond electrons was widely used as the substrate to support other active materials [26,27]. It also acts as the buffer/reservoir to stabilize the high concentration of hanging bonds in the edges and corners of well-defined Pd-Pt polyhedrons [28,29]. Furthermore, the smooth 2-D surface of rGO can anchor the polyhedral nanocrystals by full contact (Scheme S1) to lower the elastic tension of the edges and corners.…”