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Synthesis and microstructure of single‐crystalline cobalt oxyhydroxide and topotactic transformation to cobalt oxide
Journal of the American Ceramic Society ( IF 3.5 ) Pub Date : 2020-04-02 , DOI: 10.1111/jace.17140 Yoshihiro Kusano 1 , Shuji Kawasaki 2 , Jun Takada 3 , Masaki Azuma 4
Journal of the American Ceramic Society ( IF 3.5 ) Pub Date : 2020-04-02 , DOI: 10.1111/jace.17140 Yoshihiro Kusano 1 , Shuji Kawasaki 2 , Jun Takada 3 , Masaki Azuma 4
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Plate‐like cobalt oxyhydroxide (β‐CoOOH, heterogenite) single crystals, with a width of ~5 mm and a thickness of ~100 μm, were successfully synthesized using a simple method of heating a mixture of Co3O4 and NaOH in air at 650°C, and then soaking the resultant crystals in water at room temperature. The crystals were topotactically formed from sodium cobalt oxyhydrate (Na0.2(H3O)0.54CoO2·0.48H2O) by ion exchange between Na+ and H3O+, and by intercalation of water molecules in the as‐grown NaCoO2 crystals. The sodium cobalt oxyhydroxide crystals had spherical nanopores with diameters of ~5 nm.
中文翻译：
单晶羟基氧化钴的合成，微观结构和向氧化钴的全同立构转变
使用一种简单的在空气中加热Co 3 O 4和NaOH混合物的方法成功地合成了宽约5 mm，厚约100μm的板状羟基氧化钴（β-CoOOH，异质石）单晶。在650℃下，然后将所得晶体在室温下浸泡在水中。Na +和H 3 O +之间的离子交换，以及水分子插入成膜的NaCoO中，由氢氧化钴钠（Na 0.2（H 3 O）0.54 CoO 2 ·0.48H 2 O）完全形成晶体。2晶体。羟基氧化钴钠晶体具有直径约5 nm的球形纳米孔。
更新日期：2020-04-02
中文翻译：
单晶羟基氧化钴的合成，微观结构和向氧化钴的全同立构转变
使用一种简单的在空气中加热Co 3 O 4和NaOH混合物的方法成功地合成了宽约5 mm，厚约100μm的板状羟基氧化钴（β-CoOOH，异质石）单晶。在650℃下，然后将所得晶体在室温下浸泡在水中。Na +和H 3 O +之间的离子交换，以及水分子插入成膜的NaCoO中，由氢氧化钴钠（Na 0.2（H 3 O）0.54 CoO 2 ·0.48H 2 O）完全形成晶体。2晶体。羟基氧化钴钠晶体具有直径约5 nm的球形纳米孔。
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