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Nano selenium-rich additive with core-shell structure as well as preparation method and application of nano selenium-rich additive
The invention discloses a nano selenium-rich additive with a core-shell structure, which consists of A and B, namely the core-shell structure formed by coating A with B, the content of the component A is 1.0-40%, the balance is the component B, and the sum of the mass percent of the component A and the mass percent of the component B is 100%; a is any one of nano-selenium, iron selenide and sulfur iron selenide; and B is silicon dioxide or zirconium silicate. The invention also discloses a preparation method of the nano additive, which specifically comprises the following steps: preparing a core selenium precursor from selenium powder or sodium selenite pentahydrate or sodium sulfide nonahydrate; the nano selenium-rich additive A (at) B with a core-shell structure is prepared by using TEOS and a selenium precursor. The nano selenium-rich additive with the core-shell structure can effectively reduce the loss of selenium in the sintering process of selenium-rich ceramic, so that stable existence of selenium in the selenium-rich ceramic material is facilitated. Meanwhile, the amount of selenium released by the selenium-rich ceramic material in water can be controlled, and it is ensured that the selenium supplementing amount is safe and reliable for people.
本发明公开了“芯‑壳”结构纳米富硒添加剂，组成是A@B，即B包覆A形成的“芯‑壳”结构；A的含量为1.0‑40％，其余为B，A和B组分质量百分比之和为100％；A为纳米硒、硒化铁、硫硒化铁中的任意一种；B为二氧化硅或者硅酸锆。本发明还公开了该纳米添加剂的制备方法，具体为：利用硒粉或者五水亚硒酸钠或者九水合硫化钠，制备芯部硒前驱体；利用TEOS以及硒前驱体制备“芯‑壳”结构纳米富硒添加剂A@B。本发明具有“芯‑壳”结构的纳米富硒添加剂能够有效减少了富硒陶瓷烧结过程中硒的损失，从而有利于硒在富硒陶瓷材料中的稳定存在。同时可以控制富硒陶瓷材料在水中释放硒的量，确保人们补硒量安全可靠。
Nano selenium-rich additive with core-shell structure as well as preparation method and application of nano selenium-rich additive
The invention discloses a nano selenium-rich additive with a core-shell structure, which consists of A and B, namely the core-shell structure formed by coating A with B, the content of the component A is 1.0-40%, the balance is the component B, and the sum of the mass percent of the component A and the mass percent of the component B is 100%; a is any one of nano-selenium, iron selenide and sulfur iron selenide; and B is silicon dioxide or zirconium silicate. The invention also discloses a preparation method of the nano additive, which specifically comprises the following steps: preparing a core selenium precursor from selenium powder or sodium selenite pentahydrate or sodium sulfide nonahydrate; the nano selenium-rich additive A (at) B with a core-shell structure is prepared by using TEOS and a selenium precursor. The nano selenium-rich additive with the core-shell structure can effectively reduce the loss of selenium in the sintering process of selenium-rich ceramic, so that stable existence of selenium in the selenium-rich ceramic material is facilitated. Meanwhile, the amount of selenium released by the selenium-rich ceramic material in water can be controlled, and it is ensured that the selenium supplementing amount is safe and reliable for people.
本发明公开了“芯‑壳”结构纳米富硒添加剂，组成是A@B，即B包覆A形成的“芯‑壳”结构；A的含量为1.0‑40％，其余为B，A和B组分质量百分比之和为100％；A为纳米硒、硒化铁、硫硒化铁中的任意一种；B为二氧化硅或者硅酸锆。本发明还公开了该纳米添加剂的制备方法，具体为：利用硒粉或者五水亚硒酸钠或者九水合硫化钠，制备芯部硒前驱体；利用TEOS以及硒前驱体制备“芯‑壳”结构纳米富硒添加剂A@B。本发明具有“芯‑壳”结构的纳米富硒添加剂能够有效减少了富硒陶瓷烧结过程中硒的损失，从而有利于硒在富硒陶瓷材料中的稳定存在。同时可以控制富硒陶瓷材料在水中释放硒的量，确保人们补硒量安全可靠。
Nano selenium-rich additive with core-shell structure as well as preparation method and application of nano selenium-rich additive
“芯-壳”结构纳米富硒添加剂及制备方法与应用
CUI BIN (author) / CUI LILI (author) / LIU BINGXIN (author) / XIONG LIWEN (author) / DUAN YANMIN (author) / YAO YAPING (author)
2023-09-05
Patent
Electronic Resource
Chinese
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