Kang Zewen, Zhang Junyu, Guo Xiaohua, Mao Yangfan, Yang Zhimin, Kankala Ranjith Kumar, Zhao Peng, Chen Ai-Zheng
Institute of Biomaterials and Tissue Engineering, Fujian Provincial Key Laboratory of Biochemical Technology, Huaqiao University, Xiamen, 361021, P. R. China.
Instrumental Analysis Center, Laboratory and Equipment Management Department, Huaqiao University, Xiamen, 361021, P. R. China.
Small. 2023 Dec;19(52):e2304781. doi: 10.1002/smll.202304781. Epub 2023 Aug 27.
Metal oxides with diverse compositions and structures have garnered considerable interest from researchers in various reactions, which benefits from transmission electron microscopy (TEM) in determining their morphologies, phase, structural and chemical information. Recent breakthroughs have made liquid-phase TEM a promising imaging platform for tracking the dynamic structure, morphology, and composition evolution of metal oxides in solution under work conditions. Herein, this review introduces the recent advances in liquid cells, especially closed liquid cell chips. Subsequently, the recent progress including particle growth, phase transformation, self-assembly, core-shell nanostructure growth, and chemical etching are introduced. With the late technical advances in TEM and liquid cells, liquid-phase TEM is used to characterize many fundamental processes of metal oxides for CO reduction and water-splitting reactions. Finally, the outlook and challenges in this research field are discussed. It is believed this compilation inspires and stimulates more efforts in developing and utilizing in situ liquid-phase TEM for metal oxides at the atomic scale for different applications.
具有不同组成和结构的金属氧化物在各种反应中引起了研究人员的广泛关注，这得益于透射电子显微镜（TEM）在确定其形态、相、结构和化学信息方面的作用。最近的突破使液相TEM成为一个有前景的成像平台，用于跟踪工作条件下溶液中金属氧化物的动态结构、形态和组成演变。在此，本综述介绍了液体池，特别是封闭液体池芯片的最新进展。随后，介绍了包括颗粒生长、相变、自组装、核壳纳米结构生长和化学蚀刻等方面的最新进展。随着TEM和液体池技术的最新进展，液相TEM被用于表征金属氧化物在CO还原和水分解反应中的许多基本过程。最后，讨论了该研究领域的前景和挑战。相信这一汇编将激发并推动更多努力，以开发和利用原位液相TEM在原子尺度上对金属氧化物进行不同应用。
