To facilitate the formation of bicomponent heterostructure, here a novel strategy of surface group-mediated nucleation reaction is developed to prepare carbon dots-embedded BiPO₄ heterostructure (CDs@BiPO₄). The presented synthetic route is simple, fast, cheap and without the need for external heating and any additional energy input. The obtained CDs@BiPO₄ exhibits a broadband absorption from 300 to 800 nm, no matter absorption intensity or visible absorption range it far exceeds the similar products prepared by energy-consuming hydrothermal method reported. The charge transfer impedance of CDs@BiPO₄ is only one seventh of that of pure BiPO₄. Moreover, CDs act as electron donors and trapping agent of photogenerated holes in the heterostructure. Accordingly, more photoinduced electrons are produced from CDs@BiPO₄ than pure BiPO₄ and can be used to activate nitro compounds, promoting their reduction with hydrogen species from borohydride ions. After CDs are embedded, the catalytic activity of BiPO₄ for the reduction of 4-nitrophenol to 4-aminophenol is enhanced around 2.5-fold under visible light irradiation. Besides, the CDs@BiPO₄ reveals higher stability and reusability than pure BiPO₄.

为了促进双组分异质结构的形成，在此开发了一种新的表面基团介导的成核反应策略，以制备碳点嵌入的BiPO ₄异质结构（CDs @ BiPO ₄）。提出的合成路线简单，快速，便宜，并且不需要外部加热和任何额外的能量输入。所得的CDs @ BiPO ₄表现出300至800 nm的宽带吸收，无论吸收强度或可见吸收范围如何，其吸收率均远远超过报道的通过耗能水热法制备的同类产品。CDs @ BiPO ₄的电荷转移阻抗仅为纯BiPO _{4的十分之一}。此外，CD充当异质结构中光生空穴的电子给体和捕获剂。因此，更多的光生电子被从CD @ BIPO产生₄比纯BIPO ₄和可用于激活硝基化合物，促进其与由硼氢化离子氢物种减少。嵌入CD后，在可见光照射下，BiPO ₄将4-硝基苯酚还原为4-氨基苯酚的催化活性提高了约2.5倍。此外，与纯BiPO ₄相比，CDs @ BiPO ₄具有更高的稳定性和可重复使用性。