| 真空冷冻干燥结合微乳液法制备纳米ZnO |
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| 引用本文： | 田拴宝,尚学芳,李升宪.真空冷冻干燥结合微乳液法制备纳米ZnO[J].光谱实验室,2012,29(3):1446-1448. |
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| 作者姓名： | 田拴宝 尚学芳 李升宪 |
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| 作者单位： | 1. 新乡医学院化学系 河南省新乡市五一路东段45号 453003
2. 武汉大学化学与分子科学学院 武汉市珞珈山 430072 |
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| 基金项目： | 河南省教育厅自然科学研究基金资助项目 |
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| 摘 要： | 真空冷冻干燥技术结合反相微乳液法制备了纳米ZnO粉体。利用XRD、TEM及表面积分析仪对制备过程、粉体的结构、形貌、比表面积、孔容进行了表征。探讨了煅烧温度、干燥方式及真空冷冻干燥的主要参数对纳米ZnO的影响。结果表明:该方法较常规方法制备的纳米ZnO粒径小(平均19nm)、分散性好、比表面积大(567.9m2.g-1),对亚甲基蓝溶液的降解(降解率98.6%)具有较高的光催化活性。
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| 关 键 词： | 真空冷冻干燥 反相微乳液 纳米ZnO 比表面积 光催化活性 |
Preparation of Nanosized ZnO by Vacuum Freeze Drying with Microemulsion Method |
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| TIAN Shuan-Bao
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SHANG Xue-Fang
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LI Sheng-Xian.Preparation of Nanosized ZnO by Vacuum Freeze Drying with Microemulsion Method[J].Chinese Journal of Spectroscopy Laboratory,2012,29(3):1446-1448. |
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| Authors: | TIAN Shuan-Bao SHANG Xue-Fang LI Sheng-Xian |
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| Institution: | TIAN Shuan-Bao SHANG Xue-Fang LI Sheng-Xian a(Department of Chemistry,Xinxiang Medical University,Xinxiang,Henan 453003,P.R.China)a(College of Chemistry and Molecular Science,Wuhan University,Wuhan 430072,P.R.China) |
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| Abstract: | ZnO nanoparticles were prepared by vacuum freeze drying with reverse microemulsion method.The process of preparation,structure,morphology,pore volume and specific surface area of the nano-ZnO particles were characterized by XRD,TEM and surface area analyzer techniques.The influences of calcining temperature,drying methods and the main parameters of vacuum freeze drying on nano-ZnO were studied.Compared with the conventional methods,prepared nano-ZnO powder by the method has much smaller particle size(average size of 19nm),better dispersity,bigger specific surface area(value of 567.9m2·g-1) and better photocatalytic activity on degradation of methylene blue(degradation rate of 98.6%). |
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| Keywords: | Vacuum Freeze-Drying Reverse Microemulsion Nano-ZnO Specific Surface Area Photocatalytic Activity |
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