摘要
室内空气中,甲醛超标给人体造成潜在的持久性伤害问题正在日益凸显,传统脱除空气中甲醛的方法在能耗、处理量、脱除率等方面存在诸多不足,等离子体与催化剂结合脱除空气中甲醛是一条新的途径。采用均匀沉淀法制备不同TiO2-铋系复合催化剂,将其与等离子体结合。在催化剂复合比为3∶7时,分别对单纯TiO2-BiVO4催化剂不放电时甲醛的脱除率、单纯等离子体放电时甲醛的脱除率,以及催化剂TiO2-BiVO4与等离子体共同作用对甲醛的脱除率进行对比研究。结果表明,单纯催化剂的甲醛脱除率为6.00%,单纯等离子体对甲醛的脱除率为63.10%,所制备的催化剂与等离子体之间可以产生显著的协同效应,甲醛脱除率达到87.10%。
This paper highlights the combination of plasma and catalyst to remove formaldehyde from air,as an improved alternative to the existing method which suffers many drawbacks in energy consumption,treatment capacity,removal rate and so on when used to remove excessive formaldehyde of increasing prominence in indoor air,a potentially persistent injury to human body.The proposed method works by combining different TiO 2-Bismuth series composite catalysts prepared by homogeneous precipitation method with plasma.The study building on the composite ratio of catalyst of 3∶7 looks at the removal rate of formaldehyde when TiO2-BiVO 4 catalyst is not discharged,the removal rate of formaldehyde in simple plasma discharge,and the removal rate of formaldehyde by the interaction of catalyst TiO2-BiVO 4 and plasma.The results show that the formaldehyde removal rate is 6%,and 63.10%,and 87.10%respectively for the simple catalyst,the simple plasma,and the combination of the prepared catalyst and the plasma,with a significant synergistic effect.
作者
丁慧贤
柳开智
孙泽飞
王东
Ding Huixian;Liu Kaizhi;Sun Zefei;Wang Dong(School of Environmental & Chemical Engineering,Heilongjiang University of Science & Technology,Harbin 150022,China)
出处
《黑龙江科技大学学报》
CAS
2019年第4期442-446,共5页
Journal of Heilongjiang University of Science And Technology
