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CN106984322A 一种铌酸盐基光催化剂及其制备方法 无效 - 撤回

一种铌酸盐基光催化剂及其制备方法
摘要：
一种铌酸盐基光催化剂及其制备方法，属于无机光催化剂及其制备方法。该光催化材料化学通式为Sr3CoNb2O9，采用固相法制备成不规则颗粒状或者球状颗粒；固相制备方法，步骤如下：(1)按照化学式Sr3CoNb2O9的计量比，分别称取含Sr2+、Co2+/Co3+和Nb5+的化合物，在研钵中充分研磨，混合均匀；(2)将步骤(1)称取并研磨均匀的混合物在空气气氛中煅烧，煅烧温度为650～850℃，煅烧时间为3～8小时；(3)将步骤(2)煅烧的混合物自然冷却后，研磨并混合均匀，在空气气氛中煅烧，煅烧温度为1000～1300℃，煅烧时间为6～10小时；自然冷却得到铌酸盐光催化材料。优点：制备过程简单易行，生产成本低，对设备要求简单；化学稳定性好，便于工业化生产。
摘要（英）：

The invention relates to a niobate-based photocatalyst and a preparation method thereof and belongs to inorganic photocatalysts and preparation methods thereof. The chemical formula of the photocatalyst is Sr3CoNb2O9, and the photocatalyst is irregular particles or spherical particles prepared by the solid-phase method. The solid-phase preparation method includes the steps of firstly, weighing a Sr<2+> compound, a Co<2+>/Co<3+> compound and a Nb<5+> compound according to the stoichiometric ratio of Sr3CoNb2O9, sufficiently grinding in a mortar, and evenly mixing; secondly, calcining the mixture obtained in the first step in air atmosphere at 650-850 DEG C for 3-8 hours; thirdly, naturally cooling the calcined mixture obtained in the second step, grinding, evenly mixing, calcining in air atmosphere at 1000-1300 DEG C for 6-10 hours, and naturally cooling to obtain the niobate-based photocatalyst. The niobate-based photocatalyst and the preparation method thereof have the advantages that the method is simple and practicable in process, low in production cost, low in equipment requirements and convenient for industrial production, and the prepared niobate-based photocatalyst is good in chemical stability.

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