Shape-Controlled Growth and In Situ Characterization of CdS Nanocrystals via Liquid Cell Transmission Electron Microscopy

doi:10.3390/molecules29225342

	Shape-Controlled Growth and In Situ Characterization of CdS Nanocrystals via Liquid Cell Transmission Electron Microscopy
	Wei, Wei 1,2; Sun, Xinyu 1; Sun, Jun 1; Hao, Cen 1
	2024-11
发表期刊	MOLECULES
卷号	29 期号:22
摘要	Controlling the growth, structure, and shape of CdS nanocrystals is crucial for harnessing their unique physicochemical properties across diverse applications. This control can be achieved by introducing chemical additives into the synthesis reaction mixture. However, precise manipulation of nanocrystal synthesis necessitates a thorough understanding of the formation mechanisms under various chemical conditions, a task that remains challenging. In this study, we employed in situ liquid cell transmission electron microscopy (TEM) to investigate the growth mechanisms of CdS nanocrystals in a reaction solution of cadmium chloride and thiourea, with sodium citrate serving as a structure-directing agent. We observed that CdS nanocrystals evolve through two distinct growth modes: (1) in the absence of sodium citrate, spherical nanocrystals isotropically transform into CdS nanocubes, and (2) in the presence of sodium citrate, cuboid nanocrystals preferentially extend along the {011} direction and anisotropically into CdS triangular nanoplates. Theoretical analysis has confirmed that the adsorption energy of sodium citrate on different crystal facets significantly influences the morphology of the CdS nanocrystals. Our findings not only provide a method for synthesizing CdS nanocrystals based on electron beam induction but also elucidate the intricate nanoscale growth mechanisms, offering insights that could inform the future rational design of nanocrystals with tailored morphologies.
关键词	CdS nanocrystals in situ liquid cell TEM structural evolution growth mechanism
其他关键词	PERFORMANCE ; GENERATION
DOI	10.3390/molecules29225342
收录类别	SCIE
语种	英语
资助项目	National Natural Science Foundation of China; Jiangsu Open University 14th Five-Year 2023 Annual Scientific Research Planning Project [2023XK004]; Natural Science Foundation of the Jiangsu Higher Education Institutions of China [24KJB430017]; [51801024]; [BY20231277]
WOS研究方向	Biochemistry & Molecular Biology ; Chemistry
WOS类目	Biochemistry & Molecular Biology ; Chemistry, Multidisciplinary
WOS记录号	WOS:001365693300001
出版者	MDPI
原始文献类型	Article
EISSN	1420-3049
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/173651
专题	国家开放大学江苏分部
通讯作者	Wei, Wei
作者单位	1.Jiangsu Open Univ, Sch Informat Technol, Nanjing 210036, Peoples R China; 2.Jiangsu Univ, Biofuels Inst, Sch Environm, Zhenjiang 212013, Peoples R China
第一作者单位	国家开放大学江苏分部
通讯作者单位	国家开放大学江苏分部
第一作者的第一单位	国家开放大学江苏分部
推荐引用方式 GB/T 7714	Wei, Wei,Sun, Xinyu,Sun, Jun,et al. Shape-Controlled Growth and In Situ Characterization of CdS Nanocrystals via Liquid Cell Transmission Electron Microscopy[J]. MOLECULES,2024,29(22).
APA	Wei, Wei,Sun, Xinyu,Sun, Jun,&Hao, Cen.(2024).Shape-Controlled Growth and In Situ Characterization of CdS Nanocrystals via Liquid Cell Transmission Electron Microscopy.MOLECULES,29(22).
MLA	Wei, Wei,et al."Shape-Controlled Growth and In Situ Characterization of CdS Nanocrystals via Liquid Cell Transmission Electron Microscopy".MOLECULES 29.22(2024).