Fabrication of hierarchical graphene@Fe3O4@SiO2@polyaniline quaternary composite and its improved electrochemical performance

Synthesis of a Novel Magnetically Retrievable Nanocomposite with Au Nanocatalysts for Hydration Reaction

“…This result further demonstrates the successful preparation of the Au-SiO2@Fe3O4-RGO composite. Moreover, the Fe band is divided into two peaks at binding energies of 711.3 and 724.0 eV, which is consistent with the 2p3/2 and 2p1/2 binding energies of Fe3O4, in accordance with reported literatures (Figure 3b) [22,23]. In addition, the Si band was analyzed as well.…”

“…In addition, the Si band was analyzed as well. As can be seen from Figure 3c, the Si 2p spectrum exhibits a characteristic band at 102.9 eV, standing for the binding energy of Si 4+ 2p and signifying the existence of SiO2 [22]. Two typical peaks at 83.7 and 87.1 eV are found in the Au 4f spectrum shown in Figure 3d, standing for the binding energy of Au (0) ( Figure 3d) [24].…”

Flexible composite film of aligned polyaniline grown on the surface of magnetic barium titanate/polyvinylidene fluoride for exceptional microwave absorption performance

“…Polyaniline (PANI), which was used as a microwave absorption material in previous works, has always been a popular topic because of its advantages of environmental stability and tunable conductivity. [20][21][22][23] PANI-based composites, such as graphene@Fe 3 O 4 @SiO 2 @PANI, 24 PANI/BaFe 12 O 19 /Y 3 Fe 5 O 12 , 25 Co/C/PANI, 26 and graphene foam/PANI, 27 exhibit enhanced microwave absorption properties. To our knowledge, reports regarding aligned PANI composites applied to EW absorbers remain rare.…”

Graphene oxide chemically decorated with hybrid Ag-Ru/chitosan nanoparticles: fabrication and properties

“…The FTIR spectrum of GO samples (Fig. 5C) reveals the peaks relating to C-O (carbonyl) at 1040 cm -1 , the C-O-C epoxyl group frequencies at 1175-1250 cm -1 and carboxyl-associated OH signal at 1405 cm -1 [14,32]. Well resolved peaks at 1600 and 1725 cm -1 are assigned to the C-C vibrations of un-oxidized graphitic domains and C=O stretching vibrations, respectively [7,32].…”

“…Ptgraphene-TiO 2 [11] and reduced GO-bismuth ferrite (Bi 2 Fe 4 O 9 ) [12] have been reported to have better photocatalytic properties. Further, studies show that the hierarchical structures of SnS 2 -rGO-TiO 2 /TiO 2 layered films [13] and rGO/Fe 3 O 4 @SiO 2 @polyaniline [14] significantly improve photoelectric and electrochemical properties, respectively. The 3 accumulation of evidence indicates that the fabrication of hybrid GO material has great potential for opto/electrochemical device development.…”