三维多级结构α-FeOOH的制备及其光催化性能  

Preparation and photocatalytic performance of three-dimensional hierarchical structureα-FeOOH

作　　者：刘顺强[1] 张萍[1] 张浩[1] 郭学锋[2] LIU Shun-qiang;ZHANG Ping;ZHANG Hao;GUO Xue-feng(Department of Medicine and Chemical Engineering,Lianyungang Technical College,Lianyungang 222006,China;School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China)

机构地区：[1]连云港职业技术学院医药与化学工程学院,江苏连云港222006 [2]南京大学化学化工学院,江苏南京210023

出　　处：《化学研究与应用》2024年第11期2688-2693,共6页Chemical Research and Application

基　　金：国家自然科学基金项目(21773112)资助;江苏省可见光催化材料工程研究中心开放课题(JECVCM202202)资助;江苏省职业教育纳米新材料“双师型”名师工作室项目(20220813)资助。

摘　　要：以硝酸铁、尿素及表面活性剂为原料,过滤沉淀得饱和溶液,在70℃的条件下通过尿素的缓慢水解低温水热合成了形貌均一的花状或海胆状三维多级结构α-FeOOH,用XRD、SEM、TEM、FTIR等进行了表征。讨论了反应物浓度和反应时间对产物形貌的影响,对该物质的形成机理进行了推理。250℃煅烧α-FeOOH可以得到形貌不变的α-Fe_(2)O_(3)。以卤钨灯为可见光源,α-FeOOH为催化剂,在H_(2)O_(2)存在下,可见光催化降解亚甲基蓝效果最好。A uniform flower like or sea urchin likeα-FeOOH with three-dimensional multi-level structure was synthesized by slow hydrolysis of urea and low-temperature hydrothermal synthesis at 70 ℃ with a saturated solution prepared by filtered and precipitated the solution of iron nitrate,urea,and surfactants.The resultant products were characterized by XRD,SEM,TEM,FTIR,etc.The influence of reactant concentration and reaction time on the morphology of the products was discussed and the formation mechanism of the substance was inferred.After heat treatment ofα-Fe00H at 250,aα-Fe_(2)O_(3)with inherited morphology was achieved.As a catalyst for visible light photocatalysis,α-FeOOH exhibits the best degradation effect on methylene blue in the presence of Fe_(2)O_(3)with tungsten halogen lamps as visible light sources.

关 键 词：Α-FEOOH 多级结构 低温 可见光 降解 

分 类 号：O614.8[理学—无机化学]