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凝胶材料制备方法及其反应动力学的研究进展
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作者 倪卓 莫少妮 +1 位作者 谢非凡 黎智华 《生物骨科材料与临床研究》 CAS 2022年第6期76-81,共6页
部分水凝胶材料具有良好的生物相容性、低细胞毒性和生物可降解性,广泛应用于组织工程和生物医药等领域,其中采用天然高分子明胶、壳聚糖和海藻酸钠制备复合凝胶材料,负载骨髓间充质干细胞用于修复和治疗骨缺损成为近年来的研究热点之... 部分水凝胶材料具有良好的生物相容性、低细胞毒性和生物可降解性,广泛应用于组织工程和生物医药等领域,其中采用天然高分子明胶、壳聚糖和海藻酸钠制备复合凝胶材料,负载骨髓间充质干细胞用于修复和治疗骨缺损成为近年来的研究热点之一。因为水凝胶材料抗张强度低和化学稳定性差,所以研究凝胶反应机理和凝胶反应动力学对提高水凝胶的性能具有重要意义。本文总结了明胶、壳聚糖和海藻酸钠凝胶材料的制备方法和凝胶反应机理,比较了不同凝胶反应动力学研究方法,介绍凝胶复合材料在骨修复中的应用,为天然高分子凝胶材料的分子设计和临床应用提供思路。 展开更多
关键词 海藻酸钠 壳聚糖 材料 凝胶反应机理 反应动力学
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Enhanced Photocatalytic Properties of Silver Oxide Loaded Bismuth Vanadate 被引量:2
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作者 单连伟 米金波 +2 位作者 董丽敏 韩志东 刘波 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2014年第8期909-913,共5页
In this work, BiV04 powders were synthesized by a sol-gel method, and the BiV04 gels with different calcination temperature were investigated by X-ray diffraction (XRD). Absorption range and band gap energy, which a... In this work, BiV04 powders were synthesized by a sol-gel method, and the BiV04 gels with different calcination temperature were investigated by X-ray diffraction (XRD). Absorption range and band gap energy, which are respon- sible for the observed photocatalyst behavior, were investigated by UV/vis diffuse reflectance spectroscopy (DRS) for pure and silver oxide loaded BiV04. Pbotocatalytic properties of the prepared samples were examined by studying the degradation of the methyl orange. When using NaCI02 as an electron acceptor, the possible photocatalytic mech- anism has been discussed by photocatalytic reactions. With the help of electron acceptor, the results show clearly that the BiV04 loaded silver oxide exhibited superior photocatalytic activity in simulated dye wastewater treatment. 展开更多
关键词 Bismuth vanadate Photocatalytic properties Sol-gel method
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