Abstract

Heterogeneous and mechanochemical syntheses of new materials based on titanium, calcium, and magnesium phosphates were developed for the first time. The products demonstrated high efficiency as sorbents for the removal of heavy metal cations and radionuclides from solutions. The joint action of the sorption components ensures high sorption capacity towards various cations over a wide pH range. The optimal conditions providing products with a specified phase composition were identified. The use of a solution of a phosphorus-containing agent and solid precursors taken in a stoichiometric ratio, together with mild hydrothermal conditions make it possible to minimize the amount of liquid waste. In the first step of the synthesis, precipitation of titanium phosphate and formation of the precursor needed for the second step (formation of calcium and magnesium phosphates) take place simultaneously. Thus, the synthesis protocol complies with the green chemistry principles.

中文翻译：

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基于钛、钙、镁磷酸盐的新型复合吸附剂的合成

摘要

首次开发了基于磷酸钛、磷酸钙和磷酸镁的新材料的多相机械化学合成。该产品作为吸附剂可高效去除溶液中的重金属阳离子和放射性核素。吸附组分的共同作用确保了在较宽的 pH 范围内对各种阳离子的高吸附能力。确定了提供具有特定相组成的产品的最佳条件。使用化学计量比的含磷试剂和固体前体的溶液以及温和的水热条件使得可以最大程度地减少液体废物的量。在合成的第一步中，磷酸钛的沉淀和第二步所需的前体的形成（磷酸钙和磷酸镁的形成）同时发生。因此，合成方案符合绿色化学原则。