The efficient utilization of solar energy for environmental cleaning has attracted great attention, where the key is to efficiently harvest the visible and near-infrared (NIR) light which occupies approximately 95% of the solar light energy. Recently, black phosphorus (BP), as a new staring 2D material, has been extensively studied as photocatalytic materials due to its broad light absorption and tunable bandgap. Herein, we report a novel ternary nanocomposite, BP-Ag/TiO₂, prepared through controlled deposition of Ag clusters on the surface of TiO₂ nanocrystals and then incorporated to BP nanosheets. The BP-Ag/TiO₂ nanocomposite has shown excellent photocatalytic activity towards the degradation of methylene blue (MB) under visible and NIR light irradiation. About 100% and even 25% of MB was degraded in 85 min under >420 nm and >780 nm irradiation, respectively. The enhanced photocatalytic activity of BP-Ag/TiO₂ nanocomposite was mainly ascribed to the sensitization of BP nanosheets by fully harvest of solar light and high electron-hole separation efficiency. We believe that the BP-Ag/TiO₂ nanocomposite will be an effective photofunctional material in full-spectrum solar energy conversion and opens up a new door for the development of solar light driven photocatalysts for the remediation of environmental pollution.

有效利用太阳能清洁环境已成为人们关注的焦点，其中关键是有效地收集可见光和近红外（NIR）光，这些光大约占太阳能的95％。近年来，黑磷（BP）作为一种新的凝视2D材料，由于其广泛的光吸收和可调节的带隙，已作为光催化材料得到了广泛的研究。在这里，我们报告了一种新型的三元纳米复合材料BP-Ag / TiO ₂，它是通过在TiO ₂纳米晶体表面上控制Ag团簇的沉积而制备的，然后将其掺入BP纳米片中。BP-Ag / TiO ₂纳米复合材料在可见光和近红外光照射下对亚甲基蓝（MB）的降解表现出出色的光催化活性。在> 420 nm和> 780 nm的辐射下，约85％的MB分别在85分钟内降解。BP-Ag / TiO ₂纳米复合材料增强的光催化活性主要归因于通过充分收集太阳光和较高的电子-空穴分离效率来使BP纳米片敏化。我们相信，BP-Ag / TiO ₂纳米复合材料将成为全光谱太阳能转换中有效的光功能材料，并为开发用于修复环境污染的太阳光驱动光催化剂打开新的大门。