| 水热合成纳米ZnO及其光催化性能研究 |
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| 引用本文： | 丁士文,张绍岩,刘树娟,康全影,刘燕朝.水热合成纳米ZnO及其光催化性能研究[J].河北大学学报(自然科学版),2002,22(3):246-249. |
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| 作者姓名： | 丁士文 张绍岩 刘树娟 康全影 刘燕朝 |
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| 作者单位： | 河北大学,化学与环境科学学院,河北,保定,071002 |
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| 基金项目： | 河北省自然科学基金资助项目 (2 0 2 10 4 ) |
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| 摘 要： | 以ZnSO4 为原料 ,采用水热法在 180℃ ,1MPa以下合成出了纳米ZnO ,并就反应温度、反应时间、反应物浓度及物料配比等条件对产物的影响进行了探讨 .XRD物相分析 ,产物为六方晶系 ;TEM形貌观察 ,粒子基本为球形 ,平均粒径 30nm ;利用紫外 -可见分光光度计测试了光吸收性能 ,发现纳米ZnO对2 0 0～ 380nm波长范围的光有很强的吸收性 ,在可见光范围内 ,也有较强的吸收 .利用纳米ZnO作为光催化剂对有机染料溶液进行了降解实验 ,发现在日光照射 70min后 ,对酸性黑 2 34的降解率可达 10 0 % .
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| 关 键 词： | 纳米ZnO 水热合成 光吸收性能 光催化 |
| 文章编号： | 1000-1565(2002)03-0246-04 |
| 修稿时间： | 2001年12月10 |
Hydrothermal Synthesis and Photocatalytic Property of Nano-ZnO |
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| DING Shi wen,ZHANG Shao yan,LIU Shu juan,KANG Quan ying,LIU Yan chao.Hydrothermal Synthesis and Photocatalytic Property of Nano-ZnO[J].Journal of Hebei University (Natural Science Edition),2002,22(3):246-249. |
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| Authors: | DING Shi wen ZHANG Shao yan LIU Shu juan KANG Quan ying LIU Yan chao |
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| Abstract: | Using ZnSO 4 and NH 3·H 2O as the raw materials, nanometer ZnO is prepared at 180 ℃,1 MPa by hydrothemal method. The effects of the reaction temperature, time and concentration on the nanometer ZnO are discussed. XRD shows that the product is ZnO with hexagonal structure .TEM measurement indicates that the ZnO is spherial particles,and the average diameter of the particles is 30 nm. The UV light absorbent properties are detected by UV spectrophotometer. The results show that the nanometer ZnO has stronger absorption at 200～370 nm and at the visible region . Photodegradation of dyes in an aqueous solution is investigated using nanometer ZnO as a photocatalyer.The results show that after 70 minutes illumination, the decolorization rate of the acidic black dye 234 # is almost 100%. |
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| Keywords: | nanometer ZnO hydrothemal synthesis UV absorption photocatalyze |
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