P and C co-modified g-C3N4/SiO2/ZnO Z-scheme based heterogeneous nanocomposite as a highly boosted visible-light-driven photocatalytic system

Oxygen-phosphorus-codoped graphitic carbon nitride nanosheets with better photocatalytic ability towards the degradation of rhodamine-B dyes

“…The analysis showed that the (002) plane of the original GCN and O,P-GCN had a significant shift, with angles of 27.811, 27.841, and 27.921 for 1% wt, 2% wt, and 3% wt GCN doping, respectively, which differed from the original GCN at 27.61 30 by more than 0.211. Previous studies have shown that O doping of GCN causes an angle deviation of about 0.21 29,31 and P doping of GCN causes an angle deviation of about 0.11, 28,32 confirming that doping causes XRD angle deviation. The (002) plane is attributed to the interplanar stacking of unit layers, 33 and the difference in angle is due to changes in the plane size or changes in the distance between the crystal planes after O and P doping, which can be confirmed by Bragg's Law.…”

Review and Perspective on Rational Design and Interface Engineering of g-C3N4/ZnO: From Type-II to Step-Scheme Heterojunctions for Photocatalytic Applications

“…Such three-level electron–hole transfer was also witnessed in GCN/CeO 2 /ZnO, wherein CeO 2 served as a mediator . The abundant hydroxyl groups of SiO 2 interacted with the amine group of modified GCN, thereby improving the contact with GCN/ZnO . Furthermore, the presence of SiO 2 improved the hydrophilicity of the ternary system and facilitated rapid MB degradation.…”

“…287 The abundant hydroxyl groups of SiO 2 interacted with the amine group of modified GCN, thereby improving the contact with GCN/ZnO. 289 Furthermore, the presence of SiO 2 improved the hydrophilicity of the ternary system and facilitated rapid MB degradation. The coupling with NiO exhibited mixed effects on the deactivation of various bacteria, suggesting the distinct interaction of bacteria with the ternary composite.…”

“…The coupling of GCN/ZnO with wide gap materials such as metal oxides, ,,,− AgCl, , and metal sulfide (ZnS) can intensify the photon absorption in the UV range and also change the nature of the heterojunction depending on their band edge potentials. The combination of Zn 2 SnO 4 N/ZnO with O-GCN modified the heterojunction nature to Z-Z type owing to the construction of dual built-in electric fields at the interface .…”

Behavior of Silica Nanoparticles Synthesized from Rice Husk Ash by the Sol–Gel Method as a Photocatalytic and Antibacterial Agent

“…This is explained by the charge transfer from a bonding orbital of Si-O to a 2p nonbonded orbital of nonbridging oxygen [24]. According to the literature, oxygen defects or metal/metal oxide nanoparticles on the surface of SiO 2 would improve the separation of photogenerated electron-hole pairs with a decreasing rate of electron-hole recombination, and therefore boost the catalytic activity of SiO 2 -based photocatalyst [69,70]. In this work, the prepared SiO 2 NPs from the rice husk ash probably contained some impurities such as Fe and Al ions or oxides; thus, the suggested degradation mechanism will involve the effect of SiO 2 NPs besides the ions/oxides of Fe and Al deposited on the surface of SiO 2 NPs.…”