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A novel visible-light-driven InVO4/Bi2S3/g-C3N4 (VBSCN) nanocomposite photocatalyst was successfully synthesized by a wet-impregnation method. The phase, morphology, chemical composition, microstructure, and optical properties of the prepared pure g-C3N4 and ternary InVO4/Bi2S3/g-C3N4 heterojunctions were measured in detail by various characterizat...
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The development of efficient, recyclable, broad-spectrum photocatalysts was the primary objective in the field of photocatalytic wastewater degradation. Herein, a novel highly efficient ternary magnetic semiconductor composite was synthesized by integrating SrFe12O19, MoS2 nanoflower clusters, and SnS2 nanoflowers using high-temperature calcination and a one-step solvothermal method. The synthesized heterojunction nanocomposite was characterized using numerous analytical techniques, and its photocatalytic activity was evaluated under half sunlight intensity irradiation. The integration of SnS2 with SrFe12O19 and MoS2 effectively modified the crystal structure and morphology of SnS2 nanoflowers, leading to an increase in active sites while overcoming the significant electron–hole recombination rates of the individual components. The SrFe12O19/SnS2/MoS2 composite achieved 98.69% degradation of MB dye at a suitable pH of 6 and a period of 120 min of irradiation. Additionally, it maintained an excellent magnetic phenomena which contributed to it effortless to collect and reclaim from the residual mixture. After three cycles, the MB dye degradation remained at 84.07%, demonstrating its endurance and resilience. The scavenger test identified the superoxide radical as the primary agent responsible for dye destruction. This work provides study presents a synthesis method for highly efficient photocatalysts using in natural visible-light that can be recovered by simply applying an external magnetic field.
With deepening application of nuclear power technology, the problem of water ecological environment pollution caused by uranium (U(VI)) is becoming increasingly serious. Photoreduction separation of U(VI) on photocatalysts is considered as an effective strategy to solve uranium pollution. In this work, a novel ternary dual Z-scheme AgVO3-InVO4/g-C3N4 heterojunction (Z-AIGH) nanocomposite with high surface area (73.45 m2 g-1, Z-AIGH2) was designed. The batch adsorption experiment in dark environment showed that Z-AIGH2 nanocomposite had an excellent U(VI) adsorption performance. As for photocatalytic experiments, Z-AIGH2 exhibited a rapid photocatalytic response for separating U(VI) without any organic sacrifice agents. The U(VI) separation rate on Z-AIGH2 nanocomposite was over 98.7% after only 20.0 min visible light irradiation (T = 298 K, CU(Ⅵ) = 10.0 mg L-1, m/V = 0.1 g L-1 and pH = 7.0). Z-AIGH2 nanocomposite also showed good selectivity and cycle stability. The U(VI) removal rate of Z-AIGH2 nanocomposite after fifth cycles was about 96.1% (T = 298 K, CU(Ⅵ) = 10.0 mg L-1, m/V = 0.1 g L-1 and pH = 7.0). High photocatalytic activity of Z-AIGH2 for U(VI) was attributed to the construction of ternary dual Z-scheme heterojunction structure and ant nest-like hole structure. Based on above results, Z-AIGH2 nanocomposite had great potential for water environment renovation.
