室温下Bi2S3纳米晶的可控合成及其表征
关键词 Bi2S3 SnS 纳米晶 液-液界面法
Title Bi2S3 nanocrystalline at room temperature of the synthesis and characterization of controllable
Abstract This paper firstly used liquid-liquid surface method to fabricate Bi2S3 nanocrystal. The impact on the morphorlogy of the product was discussed by changing reaction time, reaction concentration, reaction volume ration, types of reagents, and so on. Secondly, we used low temperature wet chemistry method to produce SnS. The structure of the product was characterized by XRD, TEM, SEM, UV-VIS, IR, etc.
In the experiment, we used the bismuth xanthate as a reactant to form Ears of sorghum -like Bi2S3 nanocrystals by the water-chloriform liquid-liquid surface method. Bi2S3 was obtained by changing the concentration of the reactants. Flake Bi2S3 nanocrystals was formed in the system of toluene and water.
Key words Bi2S3 SnS micro nanocrystalline liquid-liquid interface method
目次
1 引言 1
1.1纳米材料及半导体材料简介 1
1．2 半导体纳米材料的研究 2
1.2.1半导体材料的物理特性 2
1.2.1 .1 小尺寸效应 2
1.2.1.2 量子尺寸效应 2
1.2.1.3 宏观量子隧道效应 3
1.2.1.4 表面效应 3
1.2.1.5 介电限域效应 3
1．3 Bi2S3及SnS的结构与性质简介 4
1.3.2 硫化铋的研究概况 4
1.3.2 硫化亚锡的研究概况 4
1．4 纳米材料的合成与制备方法 6
1.4.1 溶胶-凝胶法 6
1.4.2 离子液法 7
1.4.3 水热/溶剂热法 7
1.4.4 微乳液法 8
1.4.5 液液界面法 8
1.4.6 超声电化学法 9
2 液-液界面法制备Bi2S3纳米晶 10
2.1研究方法概述 10
2.2实验部分 10
2.2.1实验药品及仪器 10
2.2.2 制备 11
2.3 结果分析 11
2.3.1 XRD测试 11
2.3.2反应物浓度对产物形貌的影响 12
2.3.2.1 UV-Vis吸收光光谱 12
2.3.2.2 SEM表征 13
2.3.2.3 TEM表征 14
2.3.2.4 Bi2S3的衍射花样 14
2.3.3反应时间对产物形貌的影响 15
2.3.3.1实物照片 15
2.3.3.2 TEM表征 16
2.3.4溶剂种类对产物形貌的影响 17
2.4本章小结 17
3 SnS 纳米晶的制备 18
3.1实验部分 18
3.1.1实验药品及仪器 18
3.1.2 SnS的制备步骤 18
3.2结构表征 19