Xu Yuanmei, Zhang Wenna, Zhou Guofu, Jin Mingliang, Li Xueshi
International Academy of Optoelectronics at Zhaoqing, South China Normal University, China; National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
National Center for International Research on Green Optoelectronics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
J Colloid Interface Sci. 2022 Jun 15;616:641-648. doi: 10.1016/j.jcis.2022.01.185. Epub 2022 Feb 3.
Two-dimensional black phosphorus-based nanomaterials with distinct properties have emerged as fascinating semiconductor photocatalysts. In this work, metal phosphide (M-P: CoP, Ni-P and Cu-P) in-situ growth on black phosphorus (BP) nanosheets is developed for photocatalytic carbon dioxide conversion. The M-P/BP heterojunction, especially CoP/BP materials, show largely improved carbon dioxide capturing ability and charge separation efficiency. More importantly, the catalytic active Co in CoP/BP can activate the adsorbed CO molecules and further boost the electron-hole separation process, which improves the photocatalytic activity for carbon dioxide reduction. The obtained CoP/BP presented a photocatalytic CO production rate of 255.1 μmol/g∙h, which was almost two times higher than that of bulk BP (141.8 μmol/g∙h). This work shows that M-P/BP materials have high potential in photocatalytic CO reduction due to their high stability and performance.
具有独特性能的二维黑磷基纳米材料已成为引人注目的半导体光催化剂。在这项工作中，开发了在黑磷（BP）纳米片上原位生长金属磷化物（M-P：CoP、Ni-P和Cu-P）用于光催化二氧化碳转化。M-P/BP异质结，特别是CoP/BP材料，表现出大大提高的二氧化碳捕获能力和电荷分离效率。更重要的是，CoP/BP中具有催化活性的Co可以激活吸附的CO分子，并进一步促进电子-空穴分离过程，从而提高光催化还原二氧化碳的活性。所制备的CoP/BP的光催化CO生成速率为255.1 μmol/g∙h，几乎是块状BP（141.8 μmol/g∙h）的两倍。这项工作表明，M-P/BP材料因其高稳定性和性能在光催化CO还原方面具有很高的潜力。
