氧化石墨烯-Fe_2O_3复合材料的制备及其光催化脱硝性能  

Synthesis and photocatalytic denitrification performance of graphene oxide/Fe_2O_3 composites

作　　者：李曈[1,2] 宋存义[1,2] 童震松[1,2] 

机构地区：[1]北京科技大学土木与环境工程学院环境工程系,北京100083 [2]工业典型污染物废物资源化处理北京市重点实验室,北京100083

出　　处：《金属功能材料》2016年第1期32-38,共7页Metallic Functional Materials

基　　金：钢铁冶金新技术国家重点实验室开放课题(KF14-09)

摘　　要：以氧化石墨烯为载体,通过水热法制备了氧化石墨烯-Fe2O3复合材料,并利用X射线衍射、扫描电镜和X射线光电子能谱等手段对其进行了表征;在H2O2-紫外光体系中加入一定量的GO-Fe2O3光催化剂,研究了其光催化氧化脱硝性能。光催化氧化实验结果表明,NO转化率随催化剂投加量、H2O2浓度、溶液温度、氧气浓度等因素的增加而提升,达到一定值后转化率保持不变或转而降低,即在催化剂投加量0.5g/100mL,H2O2浓度0.5mol/L,溶液温度30℃,氧气体积浓度为6%时,氮氧化物转化效率达84.33%。Graphene oxide has been made by improved Hummers method,then using graphene oxide as a carrier to the hydrothermal preparation of graphene oxide iron oxide composite material（GO-Fe2O3）,by adjusting the additive amount of raw materials,reaction temperature and time conditions changed into the structure and properties of composite materials.Using,X-ray diffraction（XRD）,scanning electron microscopy（SEM）and X-ray photoelectron spectroscopy of the product have been characterized.A certain amount of catalyst in H2O2/UV system was added,the photocatalytic oxidation denitrification performance was studied.The experiment shows that,the conversion rate of NOximproved with the increasing of catalyst dosing quantity,concentration of H2O2,solution temperature,oxygen concentration until they reach a certain value.And then conversion rate remains unchanged or to reduce.The best process parameters：catalyst dosing quantity is 0.5g/100 mL,H2O2concentration 0.5mol/L,solution temperature 30 ℃,oxygen volume concentration is 6%,nitrogen oxide degradation efficiency up to 84.33%.

关 键 词：氧化石墨烯 氧化铁 光催化 烟气脱硝 水热法 

分 类 号：TB332[一般工业技术—材料科学与工程] O643.36[理学—物理化学]