To realize the full utilization of solar energy, the design of highly efficient photocatalyst with improved visible-near-infrared photocatalysis performance has attracted great attentions for environment pollutant removal. In this work, we rationally employed the surface plasmon resonance effect of metallic Ag in the phosphorus doped ultrathin g-C₃N₄ nanosheets (PCNS) and BiVO₄ composites to construct a ternary Ag@PCNS/BiVO₄ photocatalyst. It was applied for the photodegradation of ciprofloxacin (CIP), exhibiting 92.6% removal efficiency under visible light irradiation (λ > 420 nm) for 10 mg/L CIP, and presenting enhanced photocatalytic ability than that of single component or binary nanocomposites under near-infrared light irradiation (λ > 760 nm). The improved photocatalytic activity of the prepared Ag@PCNS/BiVO₄ nanocomposite can be attributed to the synergistic effect among the PCNS, BiVO₄ and Ag, which not only improves the visible light response ability and hinders the recombination efficiency of the photogenerated electrons and holes, but also retains the strong the redox ability of the photogenerated charges. According to the trapping experiment and ESR measurements results,

为了实现太阳能的充分利用，具有改善的可见光-近红外光催化性能的高效光催化剂的设计引起了环境污染物去除的极大关注。在这项工作中，我们合理地利用了磷掺杂的超薄gC ₃ N ₄纳米片（PCNS）和BiVO ₄复合材料中金属Ag的表面等离子体共振效应，以构建三元Ag @ PCNS / BiVO ₄光催化剂。应用于环丙沙星（CIP）的光降解，在可见光（λ> 420 nm）下对10 mg / L CIP表现出92.6％的去除效率，并且比单组分或二元纳米复合材料在近200nm / min的光催化能力下具有更高的光催化能力。红外光照射（λ> 760 nm）。制备的Ag @ PCNS / BiVO ₄纳米复合材料光催化活性的提高归因于PCNS，BiVO ₄和Ag之间的协同作用，不仅提高了可见光响应能力，而且阻碍了光生电子和空穴的复合效率。 ，但仍保留了光生电荷的强氧化还原能力。根据诱捕实验和ESR测量结果，