Abstract
ZnS is one of the most important semiconducting materials, and this paper discusses the wet chemical synthesis of ZnS nanoparticles in cubic and hexagonal structures. The effect of polyvinyl alcohol concentration on the ZnS particle formation is studied, and ZnS nanocrystals smaller than the Bohr exciton radius have been prepared using the capping agent polyvinyl alcohol. ZnS nanocrystals of about 1.54 nm have been prepared, and their optical absorption shows interband transitions. It is found that the polyvinyl alcohol concentration has a tremendous effect on the particle growth, since particle sizes were varied with the concentration of polyvinyl alcohol. The important result is that the strain was seen negative due to the contraction of the particles. The important finding of this experiment is that the preparation of the hexagonal ZnS nanoparticles is possible at lower temperature when a particular concentration of trisodium citrate and polyvinyl alcohol is used simultaneously with the ZnS precursors.
Highlights
Due to the unique properties and characteristics of inorganic–organic nanohybrid materials in various industries, there is a great desire to prepare and study their applications
Temperature was evaluated in the range of 150–200 °C and the reaction time was evaluated in the range of 2 to 6 days and we concluded that suitable nanocrystals are formed at the temperature of 180 °C in 4 days
The results indicate that the ratio of Ni/Mo weight percentages is increased by raising the pH value
Summary
Due to the unique properties and characteristics of inorganic–organic nanohybrid materials in various industries, there is a great desire to prepare and study their applications. The engineering of nanocrystals of inorganic–organic hybrid materials is focused on the two aspects in terms of their structural flexibility [6] and, secondly, their application as a catalyst, as gas storage, as ion sieve, in photochemistry and in electromagnetism [7,8,9,10,11,12,13,14]. Inorganic–organic hybrid materials composed of Mo and PPDA have been studied mostly in terms of crystal structure [32,33,34], but preparation of their nanoparticles has not been reported. The hydrothermal method has been used for the synthesis of NiSO4 and MoO3 nanostructure crystals using PPDA spacers. The effect of factors influencing the hydrothermal process and pH values on the morphology of nanocrystals as well as their luminescence properties has been discussed
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
