التفاصيل البيبلوغرافية
| العنوان: |
Size-Controlled ZnO Nanoparticles Synthesized with Thioacetamide and Formation of ZnS Quantum Dots. |
| المؤلفون: |
Kim, Ju-Seong, Choi, Jonghyun, Choi, Won Kook |
| المصدر: |
Electronic Materials; Dec2023, Vol. 4 Issue 4, p139-147, 9p |
| مصطلحات موضوعية: |
THIOACETAMIDE, ZINC oxide, NANOPARTICLES, QUANTUM dots, SOL-gel processes, CRYSTAL growth, ZINC sulfide |
| مستخلص: |
In this work, we report the first attempt to investigate the dependence of thioacetamide (TAA) on the size of ZnO nanoparticles (NPs) in forming ZnS nanostructures from ZnO. Size-controlled B(blue)_, G(green)_, and Y(yellow)_ZnO quantum dots (QDs) and NC (nanocrystalline)_ZnO NPs were synthesized using a sol–gel process and a hydrothermal method, respectively, and then reacted with an ethanolic TAA solution as a sulfur source. ZnO QDs/NPs began to decompose into ZnS QDs through a reaction with TAA for 5~10 min, so rather than forming a composite of ZnO/ZnS, ZnO QDs and ZnS QDs were separated and remained in a mixed state. At last, ZnO QDs/NPs were completely decomposed into ZnS QDs after a reaction with TAA for 1 h irrespective of the size of ZnO QDs up to ~50 nm. All results indicate that ZnS formation is due to direct crystal growth and/or the chemical conversion of ZnO to ZnS. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
