Synthesis of a Novel Photocatalyst MVO4/g-C3N4 (M = La, Gd) with Better Photocatalytic Activity for Tetracycline Hydrochloride Degradation under Visible-Light Irradiation

Abstract

In this study, novel photocatalysts MVO4/g-C3N4 (M = La, Gd) were prepared by the hydrothermal method, through which different loading amounts of 10–50%MVO4 and g-C3N4 were mixed and ultrasonically oscillated to gain heterojunction catalysts. All the samples were characterized by XRD, SEM, TEM, FT-IR, XPS, Us-vis, and PL to ensure the successful integration of LaVO4 and GdVO4 with g-C3N4. The obtained results showed that MVO4/g-C3N4 could effectually improve the separation efficiency of photogenerated carriers during the photodegradation process, thus improving the photodegradation efficiency, while among them, 40%GdVO4/g-C3N4 showed the best photocatalytic performance and degradation of tetracycline hydrochloride, reaching up to 91% for 3 h, which was 3.64 times higher than pristine g-C3N4. From the discussed results above, the possible mechanism of the photodegradation process was put forward. This study supplies a promising method to gain g-C3N4-based photocatalysts for antibiotics removal.

Efficient light-driven hydrogen evolution and azo dye degradation over the GdVO4@g-C3N4 heterostructure

“…31 GdVO 4 nanowires have been used as a catalyst for hydrogen generation through methanol splitting, with an observed hydrogen evolution of 42 μmol h −1 . 32 GdVO 4 /g-C 3 N 4 was synthesized by an ultrasonic dispersion method and used for the photocatalytic degradation of tetracycline hydrochloride and managed to degrade 91% in 3 h. 33 In another report, a milling and heating synthetic approach was followed to fabricate a GdVO 4 /g-C 3 N 4 nanocomposite, which was used for the degradation of Rhodamine B under visible light. 34 Even though the hydrothermal technique appears straightforward and has numerous benefits, it has not been investigated for the construction of g-C 3 N 4 /GdVO 4 (CN/GdV) heterostructures.…”

Fabrication of La2O3/g-C3N4 Heterojunction with Enhanced Photocatalytic Performance of Tetracycline Hydrochloride

“…However, as a photo-generated carrier it is shortlived, it has low photocatalytic efficiency under visible light and other flaws restraining its degradation efficiency [9,10]. Many approaches have been proposed to solve these problems, such as element doping, morphological control and so on [11][12][13]. Modifying the photocatalyst to be a heterojunction was found to be an efficient means to enhance the visible light utilization of g-C 3 N 4 and control its cost.…”

Synthesis of Ag Loaded ZnO/BiOCl with High Photocatalytic Performance for the Removal of Antibiotic Pollutants

“…The accumulation of TC-HCl and other antibiotics results in drug resistance pathogenic bacteria, and therefore has vast effects on human health and aquatic life [3]. In order to prevent their large scale accumulation in water, photocatalytic degradation with the help of photocatalysts such as TiO 2 , ZnO, SnO 2 , g-C 3 N 4 , etc., has been carried out in-depth [4][5][6][7][8][9][10][11][12][13][14]. However, most of the photocatalysts are only active under ultraviolet, which comprises a limited portion of the solar spectrum [15][16][17][18][19][20][21][22][23][24].…”