Abstract
Herein, we report on the synthesis of InSe nanosheets.
Highlights
Systematic adjustments during colloidal synthesis of reaction conditions such as time, temperature, concentration, chemistry of reagents and surfactants have been used by several researchers to manipulate the structure and morphology of nanostructures in order to attain desired chemical, optical and electronic properties based on their applications.[1]
The thicknesses of the nanosheets were established by the digital micrograph technique described in the Electronic supplementary information (ESI) in Fig. S1† and the results are summarized in Table S1.† The approximated thicknesses were 18.3 nm for 1 : 1, 28.9 nm for 3 : 1 and 61.7 nm for 2 : 1. The difference in the thickness suggest that increasing reaction time as seen in the case of 2 : 1 mole ratio resulted in number of layers stacked on top of one another
It is worth mentioning that a er the optimum time of synthesis for each concentration, the nanosheets begin to disintegrate into smaller nanoparticles as depicted in Fig. 1b and is a phenomenon reported in our previous study.[7]
Summary
Systematic adjustments during colloidal synthesis of reaction conditions such as time, temperature, concentration, chemistry of reagents and surfactants have been used by several researchers to manipulate the structure and morphology of nanostructures in order to attain desired chemical, optical and electronic properties based on their applications.[1] In general, the nanocrystal (NC) size increases with increasing reaction time, as more material is added to the NC surfaces.[1,2,3,4,5,6] For instance, in our previous studies,[7] duration of synthesis was reported as an important parameter that played a role in determining the morphology and type of the colloidal InSe nanoparticles obtained, and a growth mechanism was proposed based on products obtained at different time of syntheses. The function of oleylamine (OLA) in the formation of the InSe nanosheets was established during the reaction by introducing different dosages of 1-dodecanthiol (1-DDT) as a co-surfactant
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