Fast and Room-Temperature Synthesis of Size-Tunable PbSe Nanocubes in Aqueous Solution and Their Size-Dependent Optical Properties
| Autor: | Chiu, Ming-Shu, 邱明淑 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 Selenide sources generally cannot be dissolved in aqueous solution, so special preparation of selenium source is necessary for PbSe synthesis in an aqueous solution. Here we have developed a fast and room-temperature method to synthesize lead selenide (PbSe) nanocubes in aqueous solution. The PbSe nanocubes have sizes ranging from 13 nm to 121 nm by adjusting the amounts of acetic acid added. The formation mechanism has been considered to achieve particle size control systematically. Additionally, we conducted the photocatalytic experiment to realize there are absorption peaks in UV-vis region because of the transition into high-energy bands. With increasing PbSe particle size, their absorption bands red-shift progressively. It indicated that there are obviously size-dependent optical properties. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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