纳米二氧化钛负载墙体材料去除甲醛效果的研究

关键字：纳米,二氧化钛,负载,墙体材料,去除,甲醛

（常州工程职业技术学院，江苏 常州  213164）

 
    摘要：以白水泥、废玻璃和纳米TiO2为主要原料制备自净化墙体材料，纳米TiO2分别通过内掺法和负载法掺加，研究纳米TiO2在不同条件下对甲醛的降解效果。结果显示，随着纳米TiO2的内掺量由0~8.0%逐渐增大，降解甲醛效果越来越好；同样，随着纳米TiO2负载浓度由0~25.0 g/L逐渐递增，降解甲醛的速率也在递增。对比2种方法，由于负载法是直接将纳米TiO2固着在材料表面，降解甲醛的效果明显优于内掺法。
    关键词：纳米TiO2；自净化墙体材料；甲醛；降解
    中图分类号：TU834.8        文献标志码：A        文章编号：1001-702X（2017）11-0135-03
 

Effects of decomposing formaldehyde by nano-TiO2 added in wall materials  
LIU Rixin，YU Qiaohui，TANG Chao
（Changzhou Vocational Institute of Engineering，Changzhou 213164，China）

    Abstract：The self-purification wall materials are prepared by white cement, reused glass and nano-TiO2. Two methods，inter-mixing and coating，are used to add the nano-TiO2 powder into the wall materials. The paper investigates the effects of two methods on decomposing formaldehyde. Results show that the samples inter-mixed from 0 to 8.0%，the effects of decomposing are better. Also，with the coating concentrations at 0 to 25.0 g/L，the rates of decomposing formaldehyde are increased. Compare to inter-mixing method，coating method is better to decompose formaldehyde due to the nano-TiO2 particles coated on the surfaces of samples.
    Key words：nano-TiO2，self-purification wall material，formaldehyde，decompose