无定形固体
散射
材料科学
卟啉
Crystal(编程语言)
结晶学
单晶
暗场显微术
晶体结构
显微镜
激发态
分析化学(期刊)
分子物理学
化学
光化学
光学
原子物理学
物理
程序设计语言
色谱法
计算机科学
作者
Yue Xu,Qian Li,He Wei,Chuang Yang,Peng Fei Gao,Yuan Fang Li,Chengzhi Huang
摘要
Understanding the structural transformation of photocatalysts under illumination provides detailed insights to solve the poisoning of photocatalysts. In this study, the 1O2-induced transformation of crystalline structure in nanosized Zr-porphyrin metal organic frames (ZrTCPP MOFs) is confirmed by a dark-field microscopy (DFM) system. Under continuous illumination, the energy of excited ZrTCPP transfers to oxygen in the surroundings and generates 1O2, which causes the nanosized crystal ZrTCPP to change into the amorphous state The crystalline structure of ZrTCPP corresponds to the multiple resonance peaks of the scattering spectra, and the amorphous structure corresponds to the single scattering peak. Therefore, the crystalline change is characterized by characteristic peaks changes in the scattering spectra under DFM, showing that a real-time and in situ DFM imaging method is a good platform for monitoring the crystal structure transformation at the single particle level.
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