An Eco‐Friendly Substitute of Calcium Nitrate for the Sol–Gel Preparation of pH‐Neutral Bioactive Glass

Le résumé fourni par la source

Bioactive glasses (BGs) are a class of biomaterials with outstanding performance, widely used in clinical applications. The sol–gel method has been proven effective for preparing BGs that meet clinical requirements. Traditionally, calcium nitrate is used as the calcium precursor in this method; however, it produces environmentally harmful nitrogen oxides, which require additional removal steps and increase costs. In this study, a novel approach is introduced by using calcium oxide solution in ethylene glycol (CEG) as an alternative calcium precursor for the preparation of a newly developed pH‐neutral phosphosilicate calcium. This method yields products with properties nearly identical to those produced with calcium nitrate. Importantly, the CEG route does not involve any hazardous compounds, making it a more environmentally friendly and cost‐effective alternative to conventional methods.

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