Gao Manyi, Yang Weiwei, Yu Yongsheng, Li Jiaming, Liu Yequn
Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Changchun, Jilin 130103, China; MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
J Colloid Interface Sci. 2022 Dec;627:398-404. doi: 10.1016/j.jcis.2022.07.056. Epub 2022 Jul 15.
Plasmonic Au-mediated polymeric carbon nitride (PCN) has been recognized as one of the promising materials for photocatalytic applications due to its excellent properties in wide visible light spectrum, however it is still hindered by low catalytic efficiency. In this work, it was established that strong metal-support interactions (MSI) at the interface between plasmonic Au nanoparticles (NPs) and PCN nanosheets (PCNS) improves its photocatalytic efficiency. The resulting Au/PCNS exhibits excellent photocatalytic activity with H evolution rate up to 4.84 mmol gh under visible light, 12.4 times higher than that of bulk PCN. Such strong MSI significantly strengthens the localized surface plasmon resonance (LSPR) effect of Au NPs and the charge "pump" role of Schottky junctions at Au-PCNS interface, resulting in broad light absorption range as well as effective separation and transfer of charge carrier. This work provides a new way to design the plasmonic photocatalysts for splitting water as well as other plasmon-driven chemical reactions.
等离子体金介导的聚合氮化碳（PCN）因其在宽可见光谱范围内的优异性能，已被公认为是光催化应用中有前景的材料之一，然而其催化效率仍然较低。在这项工作中，研究发现等离子体金纳米颗粒（NPs）与PCN纳米片（PCNS）界面处的强金属-载体相互作用（MSI）提高了其光催化效率。所得的Au/PCNS表现出优异的光催化活性，在可见光下析氢速率高达4.84 mmol g⁻¹ h⁻¹，比块状PCN高12.4倍。这种强MSI显著增强了金纳米颗粒的局域表面等离子体共振（LSPR）效应以及Au-PCNS界面处肖特基结的电荷“泵”作用，从而导致宽光吸收范围以及电荷载流子的有效分离和转移。这项工作为设计用于水分解以及其他等离子体驱动化学反应的等离子体光催化剂提供了一种新方法。
