Tungsten oxide/titanium dioxide photocatalyst for improving indoor air quality
    8.
    发明授权
    Tungsten oxide/titanium dioxide photocatalyst for improving indoor air quality 有权
    氧化钨/二氧化钛光催化剂,用于改善室内空气质量

    公开(公告)号:US07255831B2

    公开(公告)日:2007-08-14

    申请号:US10449752

    申请日:2003-05-30

    IPC分类号: A61L9/00

    摘要: A tungsten oxide/titanium dioxide photocatalyst coating oxidizes contaminants in the air that adsorb onto the coating into water, carbon dioxide, and other substances. The tungsten oxide forms a monolayer on the titanium dioxide. When photons of the ultraviolet light are absorbed by the tungsten oxide/titanium dioxide photocatalyst coating, an electron is promoted from the valence band to the conduction band, producing a hole in the valence band. The holes in the valence band react with water applied on the tungsten oxide/titanium dioxide photocatalyst coating, forming reactive hydroxyl radicals. When a contaminant in the air is adsorbed onto the tungsten oxide/titanium dioxide photocatalyst, the hydroxyl radical attacks the contaminant, abstracting a hydrogen atom from the contaminant. The hydroxyl radical oxidizes the contaminant, producing water, carbon dioxide, and other substances. The tungsten oxide/titanium dioxide photocatalytic coating has low sensitivity to humidity variations.

    摘要翻译: 氧化钨/二氧化钛光催化剂涂层将吸附在涂层上的空气中的污染物氧化成水,二氧化碳和其他物质。 氧化钨在二氧化钛上形成单层。 当紫外光的光子被氧化钨/二氧化钛光催化剂涂层吸收时,从价带向导带促进电子,产生价带上的孔。 价带中的孔与施加在氧化钨/二氧化钛光催化剂涂层上的水反应,形成反应性羟基自由基。 当空气中的污染物吸附到氧化钨/二氧化钛光催化剂上时,羟基自由基侵蚀污染物,从污染物中抽出氢原子。 羟基自由基氧化污染物,产生水,二氧化碳和其他物质。 氧化钨/二氧化钛光催化涂层对湿度变化的敏感性低。

    METHOD AND SYSTEM FOR USING AN OZONE GENERATING DEVICE FOR AIR PURIFICATION
    9.
    发明申请
    METHOD AND SYSTEM FOR USING AN OZONE GENERATING DEVICE FOR AIR PURIFICATION 有权
    用于空气净化的臭氧发生装置的方法和系统

    公开(公告)号:US20100172793A1

    公开(公告)日:2010-07-08

    申请号:US12663759

    申请日:2007-06-22

    IPC分类号: A61L9/20 G01N33/00 B01J19/08

    摘要: An air purification system for a heating, ventilation, and air conditioning (HVAC) system includes an ozone generating device that is used to introduce ozone into an air stream flowing through the ozone generating device. The ozone is used to remove contaminants, including volatile organic compounds (VOCs), from the air stream. The purification system includes sensors in various locations within the HVAC system to measure a concentration of constituents in the air. In some embodiments, the constituents may include ozone and VOCs, such as toluene, butene, and propanal. To control an amount of ozone generated, the purification system controls an amount of electrical power to the ozone generating device. To control a concentration of ozone generated, the purification system controls a flow rate of air through the ozone generating device.

    摘要翻译: 用于加热,通风和空调(HVAC)系统的空气净化系统包括用于将臭氧引入流过臭氧发生装置的空气流中的臭氧发生装置。 臭氧用于从空气流中去除污染物,包括挥发性有机化合物(VOC)。 净化系统包括在HVAC系统内的各个位置的传感器,以测量空气中组分的浓度。 在一些实施方案中,组分可以包括臭氧和VOC,例如甲苯,丁烯和丙醛。 为了控制产生的臭氧的量,净化系统控制臭氧产生装置的电力量。 为了控制产生的臭氧的浓度,净化系统控制通过臭氧发生装置的空气的流量。