| 纳米掺锶羟基磷灰石的制备及其吸附性能研究 |
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| 引用本文： | 林英光,杨卓如,程江.纳米掺锶羟基磷灰石的制备及其吸附性能研究[J].化学与生物工程,2006,23(12):13-15,21. |
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| 作者姓名： | 林英光 杨卓如 程江 |
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| 作者单位： | 华南理工大学化工与能源学院,广东,广州,510640 |
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| 摘 要： | 采用溶胶-凝胶-超临界流体干燥法制备了粒径在100 nm以下的纳米掺锶羟基磷灰石(SrHAP),以牛血清白蛋白(BSA)为吸附目标,研究了纳米SrHAP的吸附性能.结果发现在偏酸性条件下,纳米SrHAP比纳米HAP对BSA的吸附量大,表明掺锶后吸附性能提高;但在碱性条件下,纳米SrHAP对BSA的吸附量减小.纳米SrHAP对BSA的吸附是个快速吸附过程,增加Sr/Ca Sr]原子比XSr和BSA的起始浓度有利于吸附,升高温度不利于吸附.
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| 关 键 词： | 超临界流体干燥 纳米掺锶羟基磷灰石 牛血清白蛋白 吸附性能 |
| 文章编号： | 1672-5425（2006）12-0013-03 |
| 收稿时间： | 2006-09-19 |
| 修稿时间： | 2006年9月19日 |
Preparation and Adsorptive Property of Strontium Substituted Nano-hydroxyapatite |
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| LIN Ying-guang,YANG Zhuo-ru,CHENG Jiang.Preparation and Adsorptive Property of Strontium Substituted Nano-hydroxyapatite[J].Chemistry & Bioengineering,2006,23(12):13-15,21. |
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| Authors: | LIN Ying-guang YANG Zhuo-ru CHENG Jiang |
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| Abstract: | Strontium substituted nano-hydroxyapatite(nano-SrHAP) with particle size below 100 nm are prepared by sol-gel-supercritical fluid drying(SCFD) method,and the adsorption capacity of bovine serum albumin(BSA) on nano-SrHAP is investigated.Results show that the adsorption capacity of BSA on nano-SrHAP is greater than that on nano-HAP when pH is below 7,indicating that the adsorptive property is improved after Ca~(2 ) in HAP has been partially substituted by Sr~(2 ),while the adsorption capacity on nano-SrHAP is decreased with pH above 7.The adsorption on nano-SrHAP is a process fast carried out,increasing the atomic ratio of Sr/Ca Sr](X_(Sr))or the initial concentration of BSA is favorable to the adsorption,but raising temperature doesn't benefit the adsorption. |
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| Keywords: | supercritical fluid drying(SCFD) strontium substituted nano-hydroxyapatite bovine serum albumin(BSA) adsorptive property |
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