室温沉淀法:一种快速且通用的磷酸钙/二氧化钛纳米复合材料合成方法

Precipitation at Room Temperature as a Fast and Versatile Method for Calcium Phosphate/TiO Nanocomposites Synthesis.

作者信息

Erceg Ina, Selmani Atiđa, Gajović Andreja, Radatović Borna, Šegota Suzana, Ćurlin Marija, Strasser Vida, Kontrec Jasminka, Kralj Damir, Maltar-Strmečki Nadica, Barbir Rinea, Pem Barbara, Vinković Vrček Ivana, Dutour Sikirić Maja

机构信息

Laboratory for Biocolloids and Surface Chemistry, Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia.

Laboratory for Energy Conversion Materials and Sensors, Ruđer Bošković Institute, Bijenička Cesta 54, 10000 Zagreb, Croatia.

出版信息

Nanomaterials (Basel). 2021 Jun 9;11(6):1523. doi: 10.3390/nano11061523.

Abstract

The constantly growing need for advanced bone regeneration materials has motivated the development of calcium phosphates (CaPs) composites with a different metal or metal-oxide nanomaterials and their economical and environmentally friendly production. Here, two procedures for the synthesis of CaPs composites with TiO nanoplates (TiNPl) and nanowires (TiNWs) were tested, with the immersion of TiO nanomaterials (TiNMs) in corrected simulated body fluid (c-SBF) and precipitation of CaP in the presence of TiNMs. The materials obtained were analyzed by powder X-ray diffraction, spectroscopic and microscopic techniques, Brunauer-Emmett-Teller surface area analysis, thermogravimetric analysis, dynamic and electrophoretic light scattering, and their hemocompatibility and ability to induce reactive oxygen species were evaluated. After 28 days of immersion in c-SBF, no significant CaP coating was formed on TiNMs. However, the composites with calcium-deficient apatite (CaDHA) were obtained after one hour in the spontaneous precipitation system. In the absence of TiNMs, CaDHA was also formed, indicating that control of the CaP phase formed can be accomplished by fine-tuning conditions in the precipitation system. Although the morphology and size of crystalline domains of CaDHA obtained on the different nanomaterials differed, no significant difference was detected in their local structure. Composites showed low reactive oxygen species (ROS) production and did not induce hemolysis. The results obtained indicate that precipitation is a suitable and fast method for the preparation of CaPs/TiNMs nanocomposites which shows great potential for biomedical applications.

摘要

对先进骨再生材料不断增长的需求推动了磷酸钙(CaP)与不同金属或金属氧化物纳米材料复合材料的开发及其经济环保的生产。在此,测试了两种合成含TiO纳米片(TiNPl)和纳米线(TiNWs)的CaP复合材料的方法,即将TiO纳米材料(TiNMs)浸入校正模拟体液(c-SBF)中,并在TiNMs存在的情况下使CaP沉淀。通过粉末X射线衍射、光谱和显微镜技术、Brunauer-Emmett-Teller表面积分析、热重分析、动态和电泳光散射对所得材料进行分析,并评估其血液相容性和诱导活性氧的能力。在c-SBF中浸泡28天后,TiNMs上未形成明显的CaP涂层。然而,在自发沉淀系统中一小时后获得了缺钙磷灰石(CaDHA)复合材料。在没有TiNMs的情况下,也形成了CaDHA,这表明通过微调沉淀系统中的条件可以实现对所形成的CaP相的控制。尽管在不同纳米材料上获得的CaDHA的晶域形态和尺寸不同,但其局部结构未检测到明显差异。复合材料显示出低活性氧(ROS)产生且不诱导溶血。所得结果表明,沉淀是制备CaPs/TiNMs纳米复合材料的一种合适且快速的方法,该复合材料在生物医学应用中显示出巨大潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4368/8230063/1290f5a6c021/nanomaterials-11-01523-g001.jpg

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