Guo Yuxuan, Liu Chen, Liao Jiangwen, Liu Yunpeng, Qian Haijie, Xu Jinfeng, Wang Hao, Nie Kaiqi, Wang Jiaou
Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China
University of Chinese Academy of Sciences, Chinese Academy of Sciences Beijing 100049 China.
RSC Adv. 2023 Apr 24;13(19):12685-12694. doi: 10.1039/d3ra00751k.
Two-dimensional (2D) materials are a very promising material family. The two-dimensional inorganic metal network called BlueP-Au network is rapidly attracting the attention of researchers due to its customizable architecture, adjustable chemical functions and electronic properties. Herein, manganese (Mn) was successfully doped on a BlueP-Au network for the first time, then the doping mechanism and electronic structure evolution was studied by X-ray photoelectron spectroscopy (XPS) based on synchrotron radiation, X-ray absorption spectroscopy (XAS), Scanning Tunneling Microscopy (STM), Density functional theory (DFT), Low-energy electron diffraction (LEED), Angle resolved photoemission spectroscopy (ARPES), Mn atoms tend to be stably adsorbed on two sites of the BlueP-Au network. It was the first observation that atoms can absorb on the two sites stably simultaneously. It is different from the previous adsorption models of BlueP-Au networks. The band structure was also successfully modulated, and overall down about 0.25 eV relative to the Fermi edge. It provided a new strategy for customizing the functional structure of the BlueP-Au network, which has provided new insights into monatomic catalysis, energy storage and nano electronic devices.
二维（2D）材料是一个非常有前途的材料家族。一种名为BlueP-Au网络的二维无机金属网络因其可定制的结构、可调节的化学功能和电子特性而迅速吸引了研究人员的关注。在此，首次成功地在BlueP-Au网络上掺杂了锰（Mn），然后基于同步辐射的X射线光电子能谱（XPS）、X射线吸收光谱（XAS）、扫描隧道显微镜（STM）、密度泛函理论（DFT）、低能电子衍射（LEED）、角分辨光电子能谱（ARPES）研究了掺杂机理和电子结构演变，Mn原子倾向于稳定地吸附在BlueP-Au网络的两个位点上。首次观察到原子可以同时稳定地吸附在这两个位点上。这与之前BlueP-Au网络的吸附模型不同。能带结构也成功地得到了调制，相对于费米边缘整体下降了约0.25 eV。它为定制BlueP-Au网络的功能结构提供了一种新策略，这为单原子催化、能量存储和纳米电子器件提供了新的见解。
