摘要
采用半封闭一步热解方法,以三聚氰胺为前驱物制备g-C_(3)N_(4),然后以圆筒状硅藻土(DE)为载体,合成DE/g-C_(3)N_(4)复合材料。并选取天然鳞片石墨为基本原料,运用Hummers法合成了氧化石墨烯(GO),在一定量的DE/g-C_(3)N_(4)粉末中加入不同质量分数的GO,得到DE/g-C_(3)N_(4)/GO三元复合光催化材料。通过SEM、BET、EDS、XRD、FT-IR对样品的晶体结构、形貌等进行表征,研究复合材料对罗丹明B溶液的光催化降解性能。结果表明,当GO的烯掺量为5%时,DE/g-C_(3)N_(4)/GO在可见光下,120min时,对RhB的降解率为93.74%,分别比DE/g-C_(3)N_(4)和g-C_(3)N_(4)提高了15.05%和31.03%。
In this paper, a semi-closed one-step pyrolysis method was used to prepare g-C_(3)N_(4)with melamine as the precursor, and then cylindrical diatomaceous earth(DE) was used as a carrier to synthesize diatomaceous earth/g-C_(3)N_(4)composite materials.After that, with natural flake graphite as the basic raw material, graphene oxide(GO)was synthesized by Hummers method.Finally, different mass fractions of GO were added to a certain amount of diatomaceous earth/g-C_(3)N_(4)powder to obtain DE/g-C_(3)N_(4)/GO ternary composite photocatalytic material.The crystal structure and morphology of the samples were characterized by SEM,BET,EDS,XRD and IR,and the photocatalytic degradation performance of the composite material on rhodamine B solution was studied.The results showed that when the content of GO was 5%,the degradation rate of DE/g-C_(3)N_(4)/GO to Rhodamine B was 93.74% under visible light at 120 minutes, which was 15.05% and 31.03% higher than that of DE/g-C_(3)N_(4)and g-C_(3)N_(4),respectively.
作者
肖力光
寇红阳
王敬维
杨猜霞
杨子力
Xiao Liguang;Kou Hongyang;Wang Jingwei;Yang Caixia;Yang Zili(School of Materials Science and Engineering,Jilin Jianzhu University,Changchun 130118)
出处
《化工新型材料》
CAS
CSCD
北大核心
2023年第2期96-99,104,共5页
New Chemical Materials
基金
“十三五”国家重点研发计划(2018YFD1101001)。
