Preparation of g-C3N4/BiOX (X = Cl, Br, I) composites, and their photocatalytic activity under visible light irradiation

Abstract

g-C 3 N 4 /BiOX (X = Cl, Br, I) composite photocatalysts have been prepared by means of a facile immersion-hydrolysis method. The microstructural and morphological characteristics of the as-prepared composite photocatalysts were investigated by means of X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, and Fourier-transform infrared spectroscopy. The photodegradation performance of both g-C 3 N 4 /BiOCl and g-C 3 N 4 /BiOBr composites was superior to that of pure g-C 3 N 4 or the corresponding bismuth oxyhalides, possibly because of efficient separation of photogenerated carriers at the interface between g-C 3 N 4 and BiOX (X = Cl, Br). The photostability of as-prepared g-C 3 N 4 /BiOX (X = Cl, Br) composites was also investigated.

TiO2/g-C3N4 nanosheets hybrid photocatalyst with enhanced photocatalytic activity under visible light irradiation

“…However, the photocatalytic efficiency of single g-C 3 N 4 is limited due to the high recombination probability of photogenerated electron-hole pairs [5,6]. In order to improve photocatalytic activity, several efforts have been developed to improve the photocatalytic performance of g-C 3 N 4 in terms of introducing heteroatoms [7][8][9][10], sensitized by dyes [11], coupled with semiconductors or polymers [12][13][14][15][16], and controlling morphology [17][18][19]. Nevertheless, a simple development of highly efficient g-C 3 N 4 remains a significant challenge.…”

Fabrication of BiOCl/ZnO/CN Nanocomposite for Visible‐Light Photocatalytic Degradation of Dyes

“…it can be seen that BiOCl and CN are well attached and infiltrated on ZnO, leading to much rough surface which is favorable to the nucleation of light. It is worth noticing that BiOCl/ZnO exhibits intimate contact with CN and three constituents interact well to construct a distinctive heterojunction which is helpful to the transfer of charge carriers …”

Structural Regulation of Lanthanum Oxychloride and its Enhanced Photosynthetic Activity

“…In addition, the surface area of carbon materials is high, which can increase the contact area between reactants and improve the photosynthetic efficiency. Literature [12] uses colloquial method to prepare carbon-containing yttrium oxychloride material, and analyzes its microstructure and morphology through X-ray diffractometer and a transmission electron microscope. Finally, it is found that adding carbon material can make carbon atom and yttrium oxychloride contact.…”