Photocatalyst and method for preparing the same
    1.
    发明授权
    Photocatalyst and method for preparing the same 失效
    光催化剂及其制备方法

    公开(公告)号:US5668076A

    公开(公告)日:1997-09-16

    申请号:US429345

    申请日:1995-04-26

    IPC分类号: B01J23/06 B01J35/00 B01J37/02

    摘要: A photocatalyst comprises, on the surface, a zinc oxide film which comprises zinc oxide fine particles formed by anodic oxidation of zinc and having a particle size of not more than 0.2 .mu.m and a method for preparing a photocatalyst comprises the step of anodically oxidizing the surface of a zinc metal substance or a substance mainly comprising zinc metal to form, on the surface, a zinc oxide film which comprises zinc oxide fine particles having a particle size of not more than 0.2 .mu.m. The photocatalyst permits quite efficient decomposition or destruction of gases or bacterial cells to be treated, can easily be adhered to faces to which the photocatalytic function is to be imparted to thus impart sterilization and/or deodorization functions thereto and can easily be fitted to various apparatuses to which a film has conventionally been applied with great difficulty. In particular, if the thickness of the metal substrate is not more than 1 mm, the photocatalyst can be processed by, for instance, cutting and/or bending so that it can be adhered to faces other than flat ones. Moreover, if the photocatalytic activity thereof is deteriorated due to, for instance, contamination, the used photocatalyst can easily be replaced with a fresh one.

    摘要翻译: 光催化剂在表面上包含氧化锌膜,其包含通过阳极氧化锌并且具有不大于0.2μm的粒径形成的氧化锌微粒,以及制备光催化剂的方法包括以下步骤:阳极氧化 锌金属物质的表面或主要包含锌金属的物质,在表面上形成包含粒径不大于0.2μm的氧化锌微粒的氧化锌膜。 光催化剂可以很好地分解或破坏待处理的气体或细菌细胞,可以容易地粘附到赋予光催化功能的面上,从而赋予其消毒和/或除臭功能,并且可以容易地装配到各种装置 电影传统上很难应用于其中。 特别地,如果金属基板的厚度不大于1mm,则光催化剂可以通过例如切割和/或弯曲进行加工,使得其可以粘附到除平面以外的面上。 此外,如果由于例如污染导致的光催化活性劣化,则可以容易地用新鲜的光催化剂代替所使用的光催化剂。

    ZnO-Pd composite catalyst and production method thereof
    4.
    发明授权
    ZnO-Pd composite catalyst and production method thereof 失效
    ZnO-Pd复合催化剂及其制备方法

    公开(公告)号:US6099695A

    公开(公告)日:2000-08-08

    申请号:US910207

    申请日:1997-08-13

    摘要: A ZnO--Pd composite catalyst wherein Pd is dispersed and fixed on the surface of ZnO is produced by ion adsorption process having the steps of soaking ZnO in an acid solution of Pd to adsorb Pd ions (Pd.sup.2+) onto the surface of ZnO; and reducing the adsorbed Pd ions to metallic Pd particles so that the metallic Pd particles are substantially evenly deposited on the surface of ZnO. The ZnO--Pd composite catalyst provides a stable and continuing CO oxidizing capability, without light irradiation, even when the air to be treated contains sulfur compounds such as H.sub.2 S and SOx.

    摘要翻译: 通过离子吸附法制备了Pd分散固定在ZnO表面的ZnO-Pd复合催化剂,其工序有:将ZnO浸入Pd的酸性溶液中,将Pd离子(Pd2 +)吸附到ZnO的表面上; 并将吸附的Pd离子还原成金属Pd颗粒,使得金属Pd颗粒基本上均匀地沉积在ZnO的表面上。 即使待处理的空气含有硫化合物如H 2 S和SO x,ZnO-Pd复合催化剂提供了稳定且持续的CO氧化能力,而不需要光照射。

    Photocatalytic air treatment process under room light
    9.
    发明授权
    Photocatalytic air treatment process under room light 失效
    室内光催化空气处理工艺

    公开(公告)号:US6139803A

    公开(公告)日:2000-10-31

    申请号:US119050

    申请日:1998-07-20

    摘要: A process for photocatalytically treating a hospital room contaminated by bacteria or an interior environment bearing airborne malodorous substances. A thin film of photocatalyst made of a semiconductor such as titanium dioxide is disposed on the inner wall of the hospital room or living space. The photocatalytic thin film is irradiated by a light source suitable for general lighting applications, such as a fluorescent lamp, and is photoexcited by the small amount of ultraviolet radiation included in the light of the fluorescent lamp. The wattage of the fluorescent lamp as well as the distance between the photocatalytic thin film and the lamp are selected such that the intensity of those UV wavelengths which have a higher energy than the band gap energy of the photo-catalyst is 0.001-1 mW/cm.sup.2, preferably, 0.01-0.1 mW/cm.sup.2. The bacteria and chemical compounds deposited on the photoexcited thin film are photodecomposed.

    摘要翻译: 一种光催化处理被细菌污染的医院室或带有空气恶臭物质的室内环境的方法。 在医院室或生活空间的内壁上设置由诸如二氧化钛的半导体制成的光催化剂薄膜。 光催化薄膜由适用于一般照明应用的光源(例如荧光灯)照射,并且由包括在荧光灯的光中的少量紫外线照射而被光激发。 选择荧光灯的功率以及光催化薄膜和灯之间的距离,使得具有比光催化剂的带隙能量更高的能量的那些UV波长的强度为0.001-1mW / cm2,优选为0.01-0.1mW / cm 2。 沉积在光激发薄膜上的细菌和化学化合物被光分解。

    Cyanochromium-complex-based magnetic material
    10.
    发明授权
    Cyanochromium-complex-based magnetic material 失效
    基于氰基铬络合物的磁性材料

    公开(公告)号:US6117568A

    公开(公告)日:2000-09-12

    申请号:US913167

    申请日:1997-10-30

    CPC分类号: H01F41/26 C25D9/00 H01F10/005

    摘要: The invention provides a novel cyanochromium-complex-based magnetic material formed on an electrode, which is excellent in magnetic properties and of which magnetic properties are reversibly controllable, by impressing a reduction potential which electrochemically reduces Cr.sup.3+ into Cr.sup.2+ in a solution containing at least [Cr(CN).sub.6 ].sup.3- and Cr.sup.3+.

    摘要翻译: PCT No.PCT / JP96 / 00577 Sec。 371 1997年10月30日第 102(e)1997年10月30日PCT 1996年3月8日PCT公布。 公开号WO96 / 28831 日期1996年9月19日本发明提供了一种形成在电极上的新颖的基于氰基铬络合物的磁性材料,其磁性能优异,磁性能可逆地控制,通过在电化学方法中减少Cr3 +的还原电位, 至少含有[Cr(CN)6] 3-和Cr3 +的溶液。