Novel Ternary Heterogeneous Reduction Graphene Oxide (RGO)/BiOCl/TiO2 Nanocomposites for Enhanced Adsorption and Visible-Light Induced Photocatalytic Activity toward Organic Contaminants

Abstract

Herein, we describe a simple and cost-effective design for the fabrication of a novel ternary RGO/BiOCl/TiO2 nanocomposites through a simple hydrothermal process. The prepared nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), X-ray diffraction (XRD), UV–vis diffuse reflectance spectroscopy (UV–vis DRS) and N2 adsorption–desorption analysis. Organic contaminants—such as methylene blue (MB), methyl orange (MO), rhodamine B (RhB) and amido black-10B (AB-10B)—were employed as the target pollutants to evaluate the adsorption capacity and photocatalytic activity of RGO/BiOCl/TiO2 nanocomposites. From experimental data, it was also found that the amount of TiO2 impressed the photocatalytic performance, and the nanocomposites with 10% of TiO2 showed the best photocatalytic activity. The improved photocatalytic performance may be mainly due to the narrow band gap, and the charge separation and migration of RGO. Moreover, good recyclability was obtained from RGO/BiOCl/TiO2 nanocomposites, and scavenger tests indicated that photogenerated holes were the main active species in the reaction system. Therefore, the prepared RGO/BiOCl/TiO2 nanocomposites have broad applications foreground in pollutants purification.

Improving the electrochemical performance of a natural molybdenite/N-doped graphene composite anode for lithium-ion batteries via short-time microwave irradiation

“…4(d), and there are four peaks at 284.8, 285.5, 286.6 and 288.5 eV which correspond with C-C, C-O, C-N, and C]O, respectively. 16,48,49 The C-O (285.5 eV) peak area of MoS 2 /NG-MW is smaller than that of MoS 2 /NG, and the C-N (286.6 eV) peak area of MoS 2 /NG-MW is larger than that of MoS 2 /NG. At the same time, the peaks at 398.5 and 401.4 eV in the highresolution N 1s spectrum ( Fig.…”

Fabrication of Novel Heterostructure-Functionalized Graphene-Based TiO2-Sr-Hexaferrite Photocatalyst for Environmental Remediation

“…B dye at 554 nm and the MB dye at 595 nm [ 44 , 45 ]. The homogeneous dispersal of the TiO 2 nanoparticles (by offering a high number of reaction sites) and the synergistic interaction between FG and Sr-hexaferrites as cocatalysts are responsible for the drop in concentration and better catalytic effect [ 46 , 47 , 48 ].…”

Ternary Graphene Oxide and Titania Nanoparticles-Based Nanocomposites for Dye Photocatalytic Degradation: A Review

“…The synergetic behavior of GO and TiO 2 with semiconductor nanoparticles has been explored for the photodegradation of methylene blue, methyl orange, rhodamine B, reactive blue 19, congo red, acid blue 25, crystal violet and amido black-10B. Research groups have investigated the photocatalytic activity of ternary compounds introducing semiconductive materials such as ZnO [ 71 , 72 , 73 ], SnO 2 [ 74 ], BiVO 4 [ 75 ], BiOCl [ 76 ], Nb 2 O 5 [ 77 ], Ag 3 PO 4 [ 78 , 79 ], AgFeO 2 [ 80 ], Cr 2 S 3 [ 81 ], g-C 3 N 4 [ 82 ], ZnS [ 83 , 84 , 85 , 86 ]; a compendium of these reports is given in Table 2 .…”

“…In Figure 5 b, the superiority of the GO/ZnS/TiO 2 ternary composite (ZTR-TBOT) against pure ZnS and ZnS/rGO binary composites is evidenced. Finally, the third remark pertains to the reduced times required for degradation in most cases; in the study by Jing and coworkers [ 76 ], a rapid degradation of Rhodamine B was achieved using a ternary composite of GO/BiOCl/TiO 2 under visible radiation, degrading above 90% of the dye in only 5 min.…”