摘要
采用水热合成法,在蒸馏回流装置中加入PTC作为前驱体,Ag作为改性掺杂元素,按一定升温速度加热,待蒸馏瓶内达到所需温度时,恒温一定时间,冷却后洗涤得到纳米二氧化钛。用激光粒度测试仪对分散液进行了粒径分布测试、Zeta电位分析,其纳米粒径稳定均匀在10 nm以内。通过氮氧化物降解测试,实验表明其对氮氧化物的降解率可达97. 74%,通过甲醛降解测试,实验表明其对甲醛降解的降解率可达94. 70%。
Hydrothermal synthesis method was adopted,PTC was added as a precursor in the distillation reflux device,Ag was used as a modified doping element,and it was heated at a certain heating rate.When the desired temperature was reached in the distillation bottle,the temperature was constant for a period of time.After cooling and washing the nanoparticle,Titanium dioxide would be gotten.The particle size distribution test and Zeta potential analysis of the dispersion were carried out by laser particle size tester,and the nanometer particle size was uniformly distributed within 10 nm.Through the test of NO x degradation,the experimental results showed that the degradation rate of nitrogen oxides could reach 97.74%.Through the test of formaldehyde degradation,the experimental results showed that the degradation rate of formaldehyde degradation could reach 94.70%.
作者
张景
姚州威
刘兰芳
ZHANG Jing;YAO Zhou-wei;LIU Lan-fang(Shenzhen Tiandeiyi Environmental Technology Co.,Ltd.,Guangdong Shenzhen 518000,China;Plus Science&Technology Co.,Ltd.,Shanghai 200131,China)
出处
《广州化工》
CAS
2019年第1期38-40,共3页
GuangZhou Chemical Industry
关键词
水热法
纳米TIO2
纳米粒径
催化活性
hydrothermal method
Nano TiO 2
nanoparticle size
catalytic activity
