| 第 36 卷第 1 期 |  | Vol. 36 No. 1 | | 2006 年 2 月 | Feb 2006 |
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所屬欄目：功能材料
載銀納米二氧化鈦抗菌粉體的制備工藝研究 |
| 馬登峰; 彭兵; 柴立元; 韋順文; 王佳; 蔡練兵(中南大學(xué)冶金科學(xué)與工程學(xué)院; 湖南長(cháng)沙) |
| 摘 要：以工業(yè)偏鈦酸、工業(yè)濃硫酸為原料,采用稀釋熱水解法連續酸溶水解,并將銀以磷酸難溶鹽的形式載入,制備出載銀納米二氧化鈦,優(yōu)惠工藝條件:酸溶物料比H2TiO3/H2SO4=3(m/m),酸溶時(shí)間150～180 min,水解時(shí)間100～120 min,獲得細小載銀納米前驅體。經(jīng)噴霧干燥和450、500、550℃熱處理后,XRD檢測發(fā)現TiO2均為銳鈦型,銀未以銀單質(zhì)或銀鹽晶相出現在納米粉體中。最終產(chǎn)品載銀納米二氧化鈦粒徑為20～80 nm,最小抑菌濃度達1.0×10-4 mg/kg,殺菌率為99.99%。 |
| 關(guān)鍵詞：連續酸溶水解; 載銀納米二氧化鈦; 抗菌劑制備 |
| 中圖分類(lèi)號：TQ134.1+1 文獻標識碼：A 文章編號：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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