Qi Bairui, Xu Qiang, Cao Yunxuan, Xiao Zhu
School of Materials Science and Engineering, Central South University, Changsha 410083, China.
Key Laboratory of Non-Ferrous Metal Materials Science and Engineering, Ministry of Education, Changsha 410083, China.
Nanomaterials (Basel). 2023 Jun 21;13(13):1897. doi: 10.3390/nano13131897.
Copper and iron are the basic metal elements that have attracted much attention in industry. Prussian blue (PB) is a significant class of metal-organic frameworks (MOFs); however, the lack of such linkages between the structure and properties, as well as properties differences, limits their potential applications. In this paper, the Cu-based Prussian blue nanocubes with and without Fe doping were synthesized. With the increasing reaction time, the morphology of the Cu-based Prussian blue nanocubes without Fe doping (PB:Cu NCs) changes from cuboidal to circular, and finally grows back to cuboidal. However, Cu-based Prussian blue nanocubes with Fe doping (PB: CuFe NCs) grow directly from the cube and eventually collapse. The nanocubes show a notable red shift with the tunable spectra from 400 nm to 700 nm. Compared with PB: Cu NCs, the PB: CuFe NCs have higher temperature rise under 808 nm irradiation and better photothermal efficacy. The catalytic efficiency of PB: CuFe NCs changes with the pH and reaches its maximum value of 1.021 mM with a pH of 5.5. The enhanced catalytic reaction by the near-infrared radiation plasmonic photothermal effect is also confirmed. This work highlights the potential of the developed PB: Cu and PB: CuFe NCs for photothermal-enhanced co-catalysis nanomaterials.
铜和铁是在工业中备受关注的基本金属元素。普鲁士蓝（PB）是一类重要的金属有机框架材料（MOFs）；然而，其结构与性能之间缺乏这种联系以及性能差异限制了它们的潜在应用。本文合成了掺铁和未掺铁的铜基普鲁士蓝纳米立方体。随着反应时间的增加，未掺铁的铜基普鲁士蓝纳米立方体（PB:Cu NCs）的形态从长方体变为圆形，最终又变回长方体。然而，掺铁的铜基普鲁士蓝纳米立方体（PB:CuFe NCs）直接从立方体生长，最终坍塌。这些纳米立方体呈现出显著的红移，光谱范围从400纳米可调至700纳米。与PB:Cu NCs相比，PB:CuFe NCs在808纳米照射下具有更高的升温幅度和更好的光热效果。PB:CuFe NCs的催化效率随pH值变化，在pH为5.5时达到最大值1.021 mM。近红外辐射等离子体光热效应增强催化反应也得到了证实。这项工作突出了所开发的PB:Cu和PB:CuFe NCs作为光热增强共催化纳米材料的潜力。
