Abstract Submicron-sized particles of vaterite, containing carbamate-functionalised siloxane (V–Si), were prepared as the precipitant of radioactive strontium in the treatment of wastewater. The particles consisted of 10–22 nm-sized vaterite crystallites with preferred-orientation towards (00l) plane; a highly charged plane. The crystallites were suggested to be stabilised by the coordination of the siloxane through carbamate (NH–COO−) groups. On being soaked in the aqueous strontium chloride solution, vaterite was dissolved from V–Si to facilitate the competitive precipitation of calcian-strontianite and calcite. The particles containing a large amount of silicon exhibited the highly-controlled dissolution; the formation of calcite was suppressed to increase the strontium contents in the resulting precipitates.

中文翻译：

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含氨基甲酸酯球霰石颗粒的制备用于废水处理中的锶去除

摘要 制备了含有氨基甲酸酯官能化硅氧烷 (V-Si) 的亚微米尺寸球霰石颗粒作为废水处理中放射性锶的沉淀剂。颗粒由 10-22 nm 大小的球霰石微晶组成，具有朝向 (00l) 面的优先取向；高度充电的飞机。建议通过硅氧烷通过氨基甲酸酯 (NH-COO-) 基团的配位来稳定微晶。在氯化锶水溶液中浸泡后，球霰石从 V-Si 中溶解，以促进方解石-方解石和方解石的竞争沉淀。含有大量硅的颗粒表现出高度可控的溶解；方解石的形成被抑制以增加所得沉淀物中的锶含量。