无光催化涂料的制备及其甲醛降解效果研究

Preparation of nonphotocatalytic and its application in formaldehyde degradation

通过机械分散的方法引入纳米金属氧化物(纳米MOx)成功制备了可在常温、无光环境下催化降解甲醛的无光催化涂料,并利用扫描电子显微镜(SEM)对其微观形态进行了表征。使用自行搭建的测试舱评价了甲醛降解效率,探究了光照、纳米MOx含量、分散工艺对甲醛降解效果的影响。结果表明,所制备的涂料无需光照即可在室温条件下降解甲醛;纳米MOx的质量分数为10%时,涂料的甲醛降解效果最好,且其甲醛去除率保持率达到81.0%。优于同类市售产品。随着分散程度的提高,甲醛降解效果有所下降。无光催化涂料在室内空气净化领域有广阔的应用潜力。

Nonphotocatalytic coating that can catalytically degrade formaldehyde at room temperature without light was successfully prepared by adding nanometer metal oxide(nano-MOx)through means of mechanical dispersion.The micromorphology and formaldehyde degradation efficiency were characterized by SEM and self-built test chamber.The effects of light,the content of nano-MOx and dispersing process on the formaldehyde degradation efficiency were investigated.The result showed that the prepared coating can degrade formaldehyde without light at room temperature;The formaldehyde degradation efficiency of Nonphotocatalytic coatings was best on the 10% of nano-MOx content and better than similar products on the market.In addition,with increasing of dispersion,the degradation effect of formaldehyde decreased.The Nonphotocatalytic coating has broad application potential in the field of indoor air purification.