摘要
以具有优异光催化性能的TiO_(2)/g-C_(3)N_(4)复合材料为光催化活性组分、硅藻泥为涂料主要成分,将两者物理复合形成具有高效光催化性能的硅藻泥涂料。利用XRD、SEM、PL、BET、FT-IR等表征手段对复合前后的样品进行分析,根据涂料附着力及耐水性等各项国标对涂料的性能进行测试,并以NO为目标物对其光催化活性进行评价。结果表明,相比TiO_(2)/g-C_(3)N_(4)和纯硅藻泥,TiO_(2)/g-C_(3)N_(4)硅藻泥复合光催化剂具有更高的光催化活性,对NO的净化效率提高明显。其中硅藻泥与光催化材料TiO2/g-C_(3)N_(4)质量比为1∶1、混合搅拌时间为2 h、烘干温度为60℃时,光催化硅藻泥涂料对NO的净化效率最高可达71%。
A kind of diatom mud coatings with high efficiency photocatalytic properties is physically composed by using TiO_(2)/g-C_(3)N_(4) composite material with excellent photocatalytic properties as photocatalytic active component and diatom mud as main component.XRD,SEM,PL,BET,FT-IR and other characterization methods are employed to analyze the samples before and after composite.Performance of the coatings is tested according to China’s various national standards such as adhesion and water resistance of coatings,and the photocatalytic activity is evaluated with NO as the target substance.Results show that compared with TiO_(2)/g-C_(3)N_(4) or pure diatom mud,diatom mud/TiO_(2)/g-C_(3)N_(4) composite photocatalyst shows higher photocatalytic activity and significant higher purification efficiency to NO.The diatom mud/TiO_(2)/g-C_(3)N_(4) composite photocatalyst exhibits a maximum purification efficiency of 71% for NO when the mass ratio of diatom mud and TiO_(2)/g-C_(3)N_(4) is 1:1,the mixing process spends 2 h and it has been dried at 60℃.
作者
季雨晴
傅敏
杨凌
任秋燕
JI Yu-qing;FU Min;YANG Ling;REN Qiu-yan(College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China;Chongqing Key Laboratory of New Materials for Catalysis and Environment,Chongqing 400067,China)
出处
《现代化工》
CAS
CSCD
北大核心
2021年第2期172-176,182,共6页
Modern Chemical Industry
基金
重庆市高校优秀成果转化资助项目(KJZH17122)
重庆市教委科学技术研究计划重大项目(KJZD-M201800801)。
