N-doped TiO2 photocatalysts were prepared by calcinations of the hydrolysis product of tetrabutyl titanate with saturated urea solutions in ambient atmosphere at different temperature .

以饱和 尿素溶液水解工艺制备TiO2煅烧 前驱 体，在 前驱体中引入掺杂氮 源，于 400~700℃的空气气氛下煅烧2h，制得淡黄色的掺氮TiO2光催化剂；

N-doped Ti02 nanocrystallites were prepared by mixing tetrabutyl titanate and urea in ethanol then calcined at a certain temperature and time .

以 钛酸 丁酯 为 钛 源，与 尿素混合制成含氮前驱体，在空气中一定温度和时间退火处理制备氮掺杂的氧化钛纳米晶。

Application Research of Tetrabutyl Urea in Hydrogen Peroxide Preparation by Anthraquinone Process

四 丁基 脲在蒽醌法制备过氧化氢工艺中的应用研究