pH对溶胶-凝胶法合成钛酸镍纳米晶的影响

Abstract

Abstract: Nickel titanate (NiTiO₃) nanocrystallites were prepared via sol-gel method under different pH using inorganic nickel salt and tetrabutyl titanate as raw materials,absolute ethanol as solvent,citric acid as chelating agent,and acetylacetone as complexing agent.Prepared nanocrystallites were tested and characterized by X-ray diffraction (XRD),DSC/TG,and transmission electron microscopy (TEM).Results showed that the synthesis temperature of NiTiO₃ nanocrystallites was between 550 ℃ and 700 ℃;it′s easier to obtain monophase NiTiO₃ nanocrystallites in acidic condition;with the increase of pH,the powders had lower purity and the average particle size had increasing trend;powders were monophase NiTiO₃ nanocrystallites with a hexagon morphorlogy when pH=0.5. 

Key words: nickel titanate, sol-gel method, pH

CLC Number:

TQ138.13

HAO Pin, HUANG Jian-Feng, CAO Li-Yun, WU Jian-Peng, WANG Pei-Lin. Effect of pH on nickel titanate nanocrystallites synthesized by sol-gel method[J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(2): 17-.

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Inorganic Acid-Base-Salt Committee of CIESC

Effect of pH on nickel titanate nanocrystallites synthesized by sol-gel method

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