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Preparation method of bismuth oxide coated YSZ powder
The invention provides a preparation method of bismuth oxide coated YSZ (Yttria Stabilized Zirconia) powder, which comprises the following steps: step 1, adding bismuth nitrate or hydrate thereof into a concentrated nitric acid solution to form a solution with the Bi < 3 + > concentration of 0.001 mol/L-2mol/L; step 2, adding urea, YSZ powder and PVP into an ethylene glycol solution, and magnetically stirring to form a homogeneous solution; step 3, mixing the solution prepared in the step 1 with the solution prepared in the step 2 to form a homogeneous solution; step 4, transferring the solution in the step 3 into a hydrothermal reaction kettle, reacting to obtain a mixture, and cooling to room temperature; step five, carrying out centrifugal washing on the mixture prepared in the step four to obtain a precipitate, and drying to obtain Bi2O3 precursor coated YSZ powder; and step 6, calcining the YSZ powder coated with the Bi2O3 precursor in the step 5 for 1 to 10 hours at the temperature of 200 to 800 DEG C, so as to obtain the YSZ powder coated with bismuth oxide. According to the method disclosed by the invention, the nano Bi2O3 coated YSZ powder with uniform distribution and large specific surface area can be prepared, the process is simple and efficient, and the operation is easy to control.
本公开提供了一种氧化铋包覆YSZ粉体的制备方法，其包括以下步骤：步骤一，将硝酸铋或其水合物加入到浓硝酸溶液中，形成Bi3+浓度为0.001mol/L‑2mol/L的溶液；步骤二，取尿素、YSZ粉体以及PVP加到乙二醇溶液中，磁力搅拌形成均质溶液；步骤三，将步骤一中制得的溶液与步骤二中的溶液混合，形成均质溶液；步骤四，将步骤三的溶液移入水热反应釜中，反应之后，得到混合物，冷却至室温；步骤五，将步骤四所制得的混合物进行离心洗涤，得到沉淀物，干燥后得到Bi2O3前驱体包覆YSZ粉体；步骤六，将步骤五中的所述Bi2O3前驱体包覆YSZ粉体在200℃‑800℃下，煅烧1h‑10h，得到氧化铋包覆的YSZ粉体。本公开的方法可制备分布均匀、比表面积大的纳米Bi2O3包覆YSZ粉体且工艺简单高效，操作易于控制。
Preparation method of bismuth oxide coated YSZ powder
The invention provides a preparation method of bismuth oxide coated YSZ (Yttria Stabilized Zirconia) powder, which comprises the following steps: step 1, adding bismuth nitrate or hydrate thereof into a concentrated nitric acid solution to form a solution with the Bi < 3 + > concentration of 0.001 mol/L-2mol/L; step 2, adding urea, YSZ powder and PVP into an ethylene glycol solution, and magnetically stirring to form a homogeneous solution; step 3, mixing the solution prepared in the step 1 with the solution prepared in the step 2 to form a homogeneous solution; step 4, transferring the solution in the step 3 into a hydrothermal reaction kettle, reacting to obtain a mixture, and cooling to room temperature; step five, carrying out centrifugal washing on the mixture prepared in the step four to obtain a precipitate, and drying to obtain Bi2O3 precursor coated YSZ powder; and step 6, calcining the YSZ powder coated with the Bi2O3 precursor in the step 5 for 1 to 10 hours at the temperature of 200 to 800 DEG C, so as to obtain the YSZ powder coated with bismuth oxide. According to the method disclosed by the invention, the nano Bi2O3 coated YSZ powder with uniform distribution and large specific surface area can be prepared, the process is simple and efficient, and the operation is easy to control.
本公开提供了一种氧化铋包覆YSZ粉体的制备方法，其包括以下步骤：步骤一，将硝酸铋或其水合物加入到浓硝酸溶液中，形成Bi3+浓度为0.001mol/L‑2mol/L的溶液；步骤二，取尿素、YSZ粉体以及PVP加到乙二醇溶液中，磁力搅拌形成均质溶液；步骤三，将步骤一中制得的溶液与步骤二中的溶液混合，形成均质溶液；步骤四，将步骤三的溶液移入水热反应釜中，反应之后，得到混合物，冷却至室温；步骤五，将步骤四所制得的混合物进行离心洗涤，得到沉淀物，干燥后得到Bi2O3前驱体包覆YSZ粉体；步骤六，将步骤五中的所述Bi2O3前驱体包覆YSZ粉体在200℃‑800℃下，煅烧1h‑10h，得到氧化铋包覆的YSZ粉体。本公开的方法可制备分布均匀、比表面积大的纳米Bi2O3包覆YSZ粉体且工艺简单高效，操作易于控制。
Preparation method of bismuth oxide coated YSZ powder
氧化铋包覆YSZ粉体的制备方法
ZHANG JINGDE (author) / TIAN YUHANG (author) / ZHAO WEIMIN (author) / HAN GUIFANG (author)
2022-04-08
Patent
Electronic Resource
Chinese
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