A series of YVO₄/g-C₃N₄/Ag composite photocatalysts with various concentrations of YVO₄ (YVO₄/g-C₃N₄/Ag) were synthesized for the first time by hydrothermal and the photodeposition method. The photocatalytic activity of the as-prepared YVO₄/g-C₃N₄/Ag composites was evaluated by the degradation of methyl orange (MO) under visible light irradiation. It shows that the photocatalytic activity of g-C₃N₄ can be largely enhanced by loading Ag nanoparticles (NPs) and YVO₄ NPs together. The optimized loading content of YVO₄ is 35 wt%, and the highest rate constant shown in 35 wt% YVO₄/g-C₃N₄/Ag is 0.03404 min⁻¹, about 3 times and 2.1 times higher than that in g-C₃N₄ (0.01131 min⁻¹) and g-C₃N₄/Ag (0.01613 min⁻¹), respectively. The surface plasmon resonance (SPR) of Ag NPs and efficiently suppressed recombination of charge carriers due to the introduction of YVO₄ NPs make the YVO₄/g-C₃N₄/Ag nanocomposite photocatalysts exhibit excellent visible photocatalytic performance and excellent photocatalytic stability. In addition, the trapping experiments using different scavengers showed that the reactive O₂ and OH play the major role in the photodegradation of MO.

通过水热法和光沉积法首次合成了一系列不同浓度的YVO ₄的YVO ₄ / gC ₃ N ₄ / Ag复合光催化剂（YVO ₄ / gC ₃ N ₄ / Ag）。制备的YVO ₄ / gC ₃ N ₄ / Ag复合材料的光催化活性通过在可见光照射下甲基橙（MO）的降解来评估。结果表明，负载Ag纳米颗粒（NPs）和YVO ₄可以大大提高gC ₃ N ₄的光催化活性。NP在一起。YVO ₄的最佳负载量为35 wt％，以35 wt％YVO ₄ / gC ₃ N ₄ / Ag显示的最高速率常数 为0.03404 min ^-1，比gC ₃ N高约3倍和2.1倍₄（0.01131 min ^-1）和gC ₃ N ₄ / Ag（0.01613 min ^-1）。由于引入了YVO ₄ NPs ，Ag NPs的表面等离振子共振（SPR）和有效抑制载流子的重组使YVO ₄ / gC ₃ N _{4成为可能。}/ Ag纳米复合光催化剂表现出优异的可见光催化性能和优异的光催化稳定性。此外，使用不同清除剂进行的捕集实验表明，反应性O ₂和OH在MO的光降解中起主要作用。