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    • 4. 发明申请
    • ANATASE TYPE TiO2 NANORODS AND ITS PREPARATION METHOD
    • 分析型TiO2纳米粒及其制备方法
    • US20090291044A1
    • 2009-11-26
    • US12471854
    • 2009-05-26
    • Sang Il SeokIn Chan BaekJeong Ah Chang
    • Sang Il SeokIn Chan BaekJeong Ah Chang
    • C01G23/053C01G23/04
    • C01G23/0536B82Y30/00C01G23/04C01P2002/72C01P2004/04C01P2004/16H01G9/2031H01L31/0352Y02E10/542Y10S977/762
    • Provided is a process which includes slowly adding dropwise chilled distilled water to titanium tetrachloride to prepare solution of titanium oxychloride; adding basic solution thereto to maintain pH of the titanium oxychloride solution within a range from 3.5 to 4, thereby providing a suspension of titanium oxyhydroxide precipitate; adding basic solution thereto to adjust the suspension of titanium oxyhydroxide precipitate to be weakly basic, and heating and stirring the mixture at 80 to 100° C.; isolating and collecting dihydroxy-oxotitanium from the heated and stirred suspension of titanium oxyhydroxide precipitate, and washing it with weakly basic aqueous solution; and adding distilled water and 20 to 500 folds of hydrogen peroxide on the basis of 1 mole of Ti4+ in titanium oxyhydroxide to the washed titanium oxyhydroxide, and heat-treating the mixture at a temperature of 90 to 100° C. for 1 to 7 days to prepare titania nanorods having the mean length of 100 nm to 300 nm.
    • 提供了一种方法,其包括向四氯化钛中缓慢加入冷冻蒸馏水以制备氯氧化钛溶液; 向其中加入碱性溶液以将氯氧化钛溶液的pH保持在3.5至4的范围内,从而提供羟基氧化钛沉淀物的悬浮液; 加入碱性溶液以调节羟基氧化钛沉淀物的悬浮液为弱碱性,并在80至100℃下加热和搅拌该混合物。 从加热和搅拌的氢氧化正钛悬浮液中分离并收集二羟基 - 氧代钛,沉淀出来,用弱碱性水溶液洗涤; 并加入蒸馏水和20-500倍的过氧化氢,其基于1摩尔羟基氧化钛中的Ti 4+与洗涤过的羟基氢氧化钠,并在90至100℃的温度下热处理该混合物1至7天 制备平均长度为100nm至300nm的二氧化钛纳米棒。
    • 5. 发明授权
    • Anatase type TiO2 nanorods and their preparation method
    • 锐钛矿型TiO2纳米棒及其制备方法
    • US07887780B2
    • 2011-02-15
    • US12471854
    • 2009-05-26
    • Sang Il SeokIn Chan BaekJeong Ah Chang
    • Sang Il SeokIn Chan BaekJeong Ah Chang
    • C01G23/047H01L31/00
    • C01G23/0536B82Y30/00C01G23/04C01P2002/72C01P2004/04C01P2004/16H01G9/2031H01L31/0352Y02E10/542Y10S977/762
    • Provided is a process which includes slowly adding dropwise chilled distilled water to titanium tetrachloride to prepare solution of titanium oxychloride; adding basic solution thereto to maintain pH of the titanium oxychloride solution within a range from 3.5 to 4, thereby providing a suspension of titanium oxyhydroxide precipitate; adding basic solution thereto to adjust the suspension of titanium oxyhydroxide precipitate to be weakly basic, and heating and stirring the mixture at 80 to 100° C.; isolating and collecting dihydroxy-oxotitanium from the heated and stirred suspension of titanium oxyhydroxide precipitate, and washing it with weakly basic aqueous solution; and adding distilled water and 20 to 500 folds of hydrogen peroxide on the basis of 1 mole of Ti4+ in titanium oxyhydroxide to the washed titanium oxyhydroxide, and heat-treating the mixture at a temperature of 90 to 100° C. for 1 to 7 days to prepare titania nanorods having the mean length of 100 nm to 300 nm.
    • 提供了一种方法,其包括向四氯化钛中缓慢加入冷冻蒸馏水以制备氯氧化钛溶液; 向其中加入碱性溶液以将氯氧化钛溶液的pH保持在3.5至4的范围内,从而提供羟基氧化钛沉淀物的悬浮液; 加入碱性溶液以调节羟基氧化钛沉淀物的悬浮液为弱碱性,并在80至100℃下加热和搅拌该混合物。 从加热和搅拌的羟基氢氧化钛悬浮液中分离并收集二羟基 - 氧代钛,沉淀出来,用弱碱性水溶液洗涤; 并加入蒸馏水和20-500倍的过氧化氢,基于1摩尔羟基氧化钛中的Ti 4+与洗涤过的氢氧化羟基氢氧化钠,并在90至100℃的温度下热处理该混合物1至7天 制备平均长度为100nm至300nm的二氧化钛纳米棒。