Ultrathin g-C3N4 Nanosheet-Modified BiOCl Hierarchical Flower-Like Plate Heterostructure with Enhanced Photostability and Photocatalytic Performance

Abstract

Abstract:A novel ultrathin g-C 3 N 4 nanosheet-modified BiOCl hierarchical flower-like plate heterostructure (abbreviated as BC/CN) was constructed via a thermal polymerization of urea precursor followed with hydrolysis route. The as-prepared samples were well characterized by various analytical techniques. The morphological observation showed that hierarchical flower-like BiOCl nanoplates were discretely anchored on the surface of ultra-thin C 3 N 4 nanosheets. The photocatalytic performance of the as-prepared photocatalysts was evaluated by degradation of methylene blue (MB) under visible-light irradiation. The results showed that BC/CN photocatalyst exhibited enhanced photostability and photocatalytic performance in the degradation process. On the basis of experimental results and the analysis of band energy structure, it could be inferred that the enhanced photocatalytic performance of BC/CN photocatalyst was intimately related with the hybridization of hierarchical flower-like BiOCl nanoplates with ultrathin g-C 3 N 4 nanosheets, which provided good adsorptive capacity, extended light absorption, suppressed the recombination of photo-generated electron-hole pairs, and facilitated charge transfer efficiently.

Photocatalytic Degradation of Sulfamethoxazole, Nitenpyram and Tetracycline by Composites of Core Shell g-C3N4@ZnO, and ZnO Defects in Aqueous Phase

“…Thus, the removals of PPCPs are deduced to follow the aromatic ring-opening pathways (Huang et al, 2016). This is in line with a report conducted by Jia and his colleagues [27]. These findings suggested that combining g-C3N4 and ZnO would improve electron and hole separation, resulting in one of the best photocatalytic efficiency candidates [28,29].…”

Controlled Microwave-Assisted Synthesis of the 2D-BiOCl/2D-g-C3N4 Heterostructure for the Degradation of Amine-Based Pharmaceuticals under Solar Light Illumination

“…BiOCl has a band gap energy of 3.4 eV and responds to UV irradiation. 33−35 Recently, different structures of BiOCl have been reported such as spheres, plates, and flower-like structures. 36−39 Wang et al reported the use of g-C 3 N 4 for water splitting under visible light irradiation.…”

Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

“…In recent years, the discovery of visible light response photocatalysts has greatly increased the utilization efficiency of sunlight [2]. In addition to modifying the traditional photocatalytic material TiO 2 to achieve visible light response [3], numerous efforts have been directed toward the development of efficient visible light responsive photocatalytic materials such as BFO, BiVO 4 (BVO), and g-C 3 N 4 [4][5][6][7]. BiVO 4 is a typical narrow band gap semiconductor oxide with excellent visible light catalytic performance and high photoelectric conversion efficiency.…”