The high photocatalytic activity and reduced band gap energy of La and Mn co-doped BiFeO₃/graphene nanoplatelet (GNP) nanohybrids

Abstract

This article details a comparison of the photocatalytic activity of La, Mn co-doped BiFeO3/GNP nanohybrids prepared by co-precipitation and hydrothermal methods.

Synthesis of Zn3(VO4)2/BiVO4 heterojunction composite for the photocatalytic degradation of methylene blue organic dye and electrochemical detection of H2O2

“…42,43 In the PL spectra, the lower intensity indicates the reduced and controlled recombination, which results in the effective electron-hole transfer over the photocatalyst surface and allows superior degradation of contaminants, thus increasing photocatalyst efficiency. 44,45 Moreover, the reusability of Zn 3 (VO 4 ) 2 /BiVO 4 nanophotocatalyst at the ratio of 2 : 1 was checked, as shown in Fig. 9(b).…”

Congo Red Dye Degradation by Graphene Nanoplatelets/Doped Bismuth Ferrite Nanoparticle Hybrid Catalysts under Dark and Light Conditions

“…A distinct sharp peak of carbon plane (002) is observed in nanohybrid structures corresponding to GNP, proving that nanohybrids contain both BGFSO particles and GNP sheets. The periodicity of perovskite lattice structure has been suppressed and peaks intensity is reduced due to the presence of GNPs inside the nanohybrids [14,16]. The peaks broadening is attributed to decreased crystallite size of nanohybrids [14].…”

“…The periodicity of perovskite lattice structure has been suppressed and peaks intensity is reduced due to the presence of GNPs inside the nanohybrids [14,16]. The peaks broadening is attributed to decreased crystallite size of nanohybrids [14]. The impurity phase Bi 2 O 3 has been completely vanished during hybrid synthesis while a minority phase Bi 2 Fe 4 O 9 is still present.…”

“…Among perovskites, bismuth ferrite BiFeO 3 (also denoted as BFO) has been enormously attractive due to its multiferroic properties. BFO belong to the class of rhombohedral perovskites with space group named R3c and possesses ferroelectric and ferromagnetic properties simultaneously [11][12][13][14][15]. BFO is considered to be among the highly efficient visible light-driven photocatalysts [16][17][18].…”

“…GNP hybrids with MgO has be used, and has shown good photocatalytic activity in the degradation of organic dye methyl orange [42]. On the other hand, graphene hybrids with BFO and co-doped BFO has shown a good catalytic behavior with high surface area, more active sites for carriers and low band-gap [14,16,31]. All these properties play a key role in the removal of organic contaminants.…”