摘要当今社会节约能源意识逐渐深入人心，越来越多的人意识到对太阳能这种清洁无污染的能源的利用重要性，氧化铋由于其良好的催化活性及简单经济的制备方法，受到国内外研究人员的重视，同时由于氧化铋的禁带宽度在可见光范围内，使氧化铋在光催化领域的应用前景更加广泛。19162
本论文中简述了纳米氧化铋的发展研究现状, 并简述了用沉淀法以及水热法制备纳米氧化铋的过程，并调节反应条件使探究影响氧化铋微观结构以及光催化效果的因素。通过调节表面活性剂浓度或正己醇-水体系达到控制不同微观的形貌的目的。然后通过固体紫外、XRD、TEM、SEM等表征手段对水热法、沉淀法不同的条件下的产物的结构与形貌进行了分析，最终达到对氧化铋可控合成的目的；最终进行了以氧化铋为催化剂时罗丹明B和亚甲基兰的光催化降解实验，探究了合成氧化铋过程中的条件对光催化的催化效率的影响。
关键词：氧化铋  纳米晶   沉淀法  半导体光催化剂
毕业设计说明书（论文）外文摘要
Title    Morphology-controllable Bi2O3crystals through an aqueous
precipitation method and their photocatalytic performance
Abstract
In today's society, energy saving consciousness gradually win support among the people, more and more people are aware of the importance of using nonpolluting solar energy, Bismuth oxide received attention from the researchers at home and abroad due to  its good catalytic activity and simple and economic preparation method. At the same time because of the forbidden band width of bismuth oxide in visible light range, making the application prospect of bismuth oxide photocatalytic performance more open.
This paper describes the research and development status of nanometer bismuth oxide, and describes the method of synthesis of nanometer bismuth oxide, several low temperature soft chemical method: hydrothermal method, normal temperature water precipitation, precipitation and water bath heating - hexyl alcohol precipitation method. By adjusting the concentration of surfactant or hexyl alcohol - water system to control the morphology of different microscopic objective. By using solid UV, XRD, TEM, SEM to analysis the structure and morphology of the products that in different conditions of precipitation and hydrothermal method. ultimately achieve the objective that we can get controllable synthesis of bismuth oxide. In condition , was studied the influence that bismuthe oxde as a catlyst on the activities of photocatalytic degradation of the Luo Danming B, methylene blue.
Keywords: bismuth oxide nano soft low visible light catalytic chemical method
目   次

1  绪论    1
1.1  背景介绍    1
1.2  半导体光催化剂    2
1.2.1  半导体光催化剂    2
1.2.2  半导体光催化剂的催化机理    3
1.2.3  半导体光催化应用技术    3
1.3  Bi2O3及Bi2O3光催化剂简介    4
1.3.1   氧化铋的性质    4
1.3.2   氧化铋的应用    5
1.4  本文主要工作内容    5
2  氧化铋的可控合成    7
2.1  主要试剂和仪器    7
2.2  沉淀法    7
2.2.1 表面活性剂种类的影响    7
2.2.2 柠檬酸钠浓度的影响    8
2.2.3 水浴温度的影响    9
2.2.4 溶剂的影响    9
2.3  水热法    10
3  氧化铋的表征    11
3.1  XRD测试    11
3.2  固体紫外测试    11 BiO系化合物的微结构可控合成表征及光催化性能研究:http://www.youerw.com/huaxue/lunwen_10421.html