With sol-gel method, nanometer La-Ti composite oxide was successfully prepared at a low temperature (750～800C) using polyethylene glycol as dispersant. By means of atomic force microscope, the surface pattern, partic...With sol-gel method, nanometer La-Ti composite oxide was successfully prepared at a low temperature (750～800C) using polyethylene glycol as dispersant. By means of atomic force microscope, the surface pattern, particle size distribution, and specific surface area were studied. The compound particle surface appears as a smooth sheet, the mean size of the compound is 25.38 nm. On the specific surface, the particle erects at a height of 4.69 nm. The surface area is 58.90 nm2. The La-Ti composite oxide nanocrystal prefers to narrow and even particle size distribution and the homogeneity of surface topography.展开更多
By means of atomic force microscope, the surface pattern, particle size distribution, and specific surface area of La Ti composite oxide were studied. The compound particle surface appears as a smooth sheet, the even ...By means of atomic force microscope, the surface pattern, particle size distribution, and specific surface area of La Ti composite oxide were studied. The compound particle surface appears as a smooth sheet, the even size of the compound ranges from 19.85 nm to 25.38 nm. The particle seems smooth, which erects at a height from 4.69 nm to 5.88 nm.The surface area ranges from 58.90 nm 2 to 1 238.04 nm 2. The La Ti composite oxide nanocrystallines enjoy a narrow and even particle size distribution and accumulate closely.展开更多
基金This project was supported by the National Natural Science Foundation of China (1972003).
文摘With sol-gel method, nanometer La-Ti composite oxide was successfully prepared at a low temperature (750～800C) using polyethylene glycol as dispersant. By means of atomic force microscope, the surface pattern, particle size distribution, and specific surface area were studied. The compound particle surface appears as a smooth sheet, the mean size of the compound is 25.38 nm. On the specific surface, the particle erects at a height of 4.69 nm. The surface area is 58.90 nm2. The La-Ti composite oxide nanocrystal prefers to narrow and even particle size distribution and the homogeneity of surface topography.
文摘By means of atomic force microscope, the surface pattern, particle size distribution, and specific surface area of La Ti composite oxide were studied. The compound particle surface appears as a smooth sheet, the even size of the compound ranges from 19.85 nm to 25.38 nm. The particle seems smooth, which erects at a height from 4.69 nm to 5.88 nm.The surface area ranges from 58.90 nm 2 to 1 238.04 nm 2. The La Ti composite oxide nanocrystallines enjoy a narrow and even particle size distribution and accumulate closely.
