| 第 36 卷第 1 期 |  | Vol. 36 No. 1 | | 2006 年 2 月 | Feb 2006 |
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所属栏目：功能材料
载银纳米二氧化钛抗菌粉体的制备工艺研究 |
| 马登峰; 彭兵; 柴立元; 韦顺文; 王佳; 蔡练兵(中南大学冶金科学与工程学院; 湖南长沙) |
| 摘 要：以工业偏钛酸、工业浓硫酸为原料,采用稀释热水解法连续酸溶水解,并将银以磷酸难溶盐的形式载入,制备出载银纳米二氧化钛,优惠工艺条件:酸溶物料比H2TiO3/H2SO4=3(m/m),酸溶时间150～180 min,水解时间100～120 min,获得细小载银纳米前驱体。经喷雾干燥和450、500、550℃热处理后,XRD检测发现TiO2均为锐钛型,银未以银单质或银盐晶相出现在纳米粉体中。最终产品载银纳米二氧化钛粒径为20～80 nm,最小抑菌浓度达1.0×10-4 mg/kg,杀菌率为99.99%。 |
| 关键词：连续酸溶水解; 载银纳米二氧化钛; 抗菌剂制备 |
| 中图分类号：TQ134.1+1 文献标识码：A 文章编号：1009-9212(2006)01-0063-04 |
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| Preparation of Ag-embedded nano-TiO_2 Antibacterial Agent |
| MA Deng-feng; PENG Bing; CHAI Li-yuan; WEI Shun-wen; WANG Ja; CAI Lian-bing（School of Metallurgical Science and Engineering; Central South University; Changsha 410083; China） |
| Abstract：In this study,precursor of nano-TiO2 was prepared from industrial H2TiO3 and 98% sulfuric acid in continuous acid dissolution and pyro-hydrolysis.The precursor was embedded with silver in the form of Ag3PO4.The optimum parameters for the preparation was the ratio of H2TiO3 to H2SO4 in dissolving process=3 and time=150-180 min,hydrolysis time=100-120 min.After dried with a sprayer and thermal treated at 450 ℃,500 ℃ and 550 ℃,the TiO2 present in the product was in anatase phase and without simple silver salin... |
| Key words：continuous dissolution and hydrolysis; Ag-embedded nano-TiO2; preparation of antibacterial agent |
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收稿日期：2005-11-10
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