Synthesis of boron doped C3N4/NiFe2O4 nanocomposite: An enhanced visible light photocatalyst for the degradation of methylene blue

Hydrothermal Synthesis of g‐C3N4/NiFe2O4 Nanocomposite and Its Enhanced Photocatalytic Activity

“…Moreover, the g‐C 3 N 4 and g‐C 3 N 4 /NiFe 2 O 4 nanocomposite shows a broad band at 3000–3400 cm −1 corresponds to the stretching vibrations of N–H or O–H group . In the FTIR spectrum of NiFe 2 O 4 , the strong peak at 591 cm −1 corresponding to the intrinsic stretching vibrations of positive ions of NiFe 2 O 4 at tetrahedral positions (Fe‐O) . As well, the weak peak at 416 cm −1 related to metal‐oxygen (M‐O) bonds in octahedral site in the crystalline lattice of NiFe 2 O 4 nanoparticles.…”

“…The XPS of Fe2p reveal the presence of peaks at 712.2 and 725.2 eV, due to the Fe2p 3/2 and Fe2p 1/2 , indicating the Fe (III) state in g‐C 3 N 4 /NiFe 2 O 4 (Figure d) . Similarly, the Ni2p 3/2 and Ni2p 1/2 signals for Ni 2p appears at 856.8 eV, 874.6 eV in the high resolution spectra of Ni2p (Figure e), confirming the combined state of Ni (II) in g‐C 3 N 4 /NiFe 2 O 4 . The corresponding shake‐up satellite peaks for Ni2p 3/2 and Ni2p 1/2 signals appear at 862.9 eV and 880.2 eV, respectively.…”

Comparison of Enhanced Photocatalytic Degradation Efficiency and Toxicity Evaluations of CeO2 Nanoparticles Synthesized Through Double-Modulation

“…To reveal the role of the O V (through Cr or Fe doping and the basic treatment at pH = 13.5) on CeO 2 NPs, we compared the photocatalytic degradation (PCD) rates of three different organic pollutants (i.e., (a) 4-CP, (b) 2,4-DCP, and (c) HCOOH) as representative organic compounds of aromatic (i.e., 4-CP and 2,4-DCP) and aliphatic (HCOOH) compounds in the presence of CeO 2 [43][44][45]. As shown in Figure 2, only the phenolic compounds (i.e., (a) 4-CP and (b) 2,4-DCP) were clearly degraded in all the NPs (CeO 2 , Cr@CeO x , and Fe@CeO x ), while formic acid was not degraded in all.…”

“…It is known that the bare CeO 2 NPs show two major peaks at~883.7 eV and~901.3 eV for the Ce M 5 -edge and M 4 -edge, respectively. In addition, there are two post edge peaks at~889.1 eV (Y') and 906.7 eV (Y), respectively [43,44]. Another concern is the change in the electronic structure of the NPs that penetrate the cells.…”

Emerging tri‐s‐triazine‐based graphitic carbon nitride: A potential signal‐transducing nanostructured material for sensor applications

“…[ 13 ] The efficiency of g‐C 3 N 4 remains somewhat limited by its poor light‐harvesting ability and low charge mobilities. To modulate its electronic structure, scientists have modified both its composition and morphology through diverse strategies such as doping, [ 14 ] creating defects, [ 15 ] heterojunctions, [ 16 ] and by creating hybrids with other carbon materials. [ 17 ] These modifications create additional properties, which can be classified as (1) semiconductor‐driven properties, for example, electrochemiluminescence (ECL), photo‐electrochemistry (PEC), and fluorescence (FL), and (2) electron‐donating properties, for example, catalysis and its strong affinity towards Lewis acids.…”