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    • 5. 发明申请
    • Metal oxide materials, production method thereof, and application thereof
    • 金属氧化物材料及其制造方法及其应用
    • US20060292062A1
    • 2006-12-28
    • US11473086
    • 2006-06-23
    • Fusao HojoShinji YamadaJiro Ushio
    • Fusao HojoShinji YamadaJiro Ushio
    • C01G19/02
    • C01G1/02B82Y30/00C01B3/0015C01B13/36C01B33/12C01G19/02C01G25/02C01G33/00C01G41/02C01P2002/60C01P2004/64C01P2006/12C01P2006/13C01P2006/16G01N27/125Y02E60/328
    • A mesoporous metal oxide crystal material is provided. This material has realized a large specific surface area by controlling crystallite diameter in the formation of metal oxide crystals, and preventing collapse of the mesoporous structure associated with the crystal growth upon calcinations, to improve sensitivity and effectiveness of a gas detector element of the metal oxide material and photocatalyst. A metal oxide precursor is filled in the pores of a mesoporous template, and the resulting mesoporous silica having the metal oxide precursor filled therein is added to a hydrolytic aqueous solution to thereby promote hydrolysis of the metal oxide precursor in the interior of the pores and produce a large number of metal oxide crystals in the interior of the pores. Next, the metal oxide fine crystals are heated at 300° C. or higher for calcination with the crystallite diameter controlled in the range of 1 nm to 2 nm. The part of the temperate is subsequently dissolved by an aqueous solution of NaOH or HF to leave a metal oxide material having a mesoporous structure with the crystallite diameter of not 1 nm to 2 nm.
    • 提供介孔金属氧化物晶体材料。 该材料通过控制金属氧化物晶体的形成中的微晶直径而实现了大的比表面积,并且防止了煅烧时与晶体生长相关的介孔结构的塌陷,以提高金属氧化物的气体检测元件的灵敏度和有效性 材料和光催化剂。 将金属氧化物前体填充到介孔模板的孔中,并将其中填充有金属氧化物前体的所得介孔二氧化硅加入到水解水溶液中,从而促进孔内部的金属氧化物前体的水解,并产生 在孔内部有大量的金属氧化物晶体。 接下来,将金属氧化物微晶加热至300℃以上,进行煅烧,将微晶直径控制在1nm〜2nm的范围内。 随后温度的一部分被NaOH或HF的水溶液溶解,留下具有微孔直径不为1nm至2nm的介孔结构的金属氧化物材料。