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Sol-gel as methodology to obtain bioactive materials

机译：溶胶-凝胶法作为获得生物活性物质的方法

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We employed the sol-gel methodology to obtain a silica matrix modified with calcium and phosphate ions. We prepared the matrix by hydrolysis and condensation of the precursors triethyl phosphate, calcium nitrate, and tetraethylorthosilicate, which were the sources of phosphate, calcium, and silicon, respectively. We dried and heat-treated the samples at 110 or 900°C and placed them in simulated body fluid (SBF) for three days. We conducted scanning electron microscopy, X-ray diffraction, and infrared spectroscopy analyses, which evidenced that the sample treated at 110°C contained calcium phosphate silicate and hydroxyapatite before and after contact with SBF, respectively. The sample treated at 900°C exhibited a hydroxyapatite phase before and after contact with SBF, but the crystalline phase was more evident after the contact. In conclusion, the sol-gel methodology provided bioactive samples for bone regeneration.
机译：我们采用溶胶-凝胶法获得了用钙和磷酸根离子改性的二氧化硅基质。我们通过水解和缩合前体磷酸三乙酯，硝酸钙和原硅酸四乙酯来制备基质，它们分别是磷酸盐，钙和硅的来源。我们将样品在110或900°C下干燥和热处理，然后将其置于模拟体液（SBF）中三天。我们进行了扫描电子显微镜，X射线衍射和红外光谱分析，这表明在110°C下处理的样品在与SBF接触之前和之后分别含有磷酸钙硅酸盐和羟基磷灰石。在900°C下处理的样品在与SBF接触之前和之后均呈现羟基磷灰石相，但在接触后结晶相更加明显。总之，溶胶-凝胶法为骨骼再生提供了生物活性样品。

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