无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
催化材料

镂空α-氧化铁纳米带制备及其光催化性能研究

  • 王晨鑫 ,
  • 陈美丽 ,
  • 田蒙奎 ,
  • 杨万亮
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  • 贵州大学化学与化工学院,贵州贵阳 550025
王晨鑫(1995— ),男,硕士研究生,主要研究方向为光催化与金属/非金属材料制备;E-mail: 1223829154@qq.com

收稿日期: 2020-08-12

  网络出版日期: 2021-07-08

基金资助

国家自然科学基金(21663009);国家重点研发计划(2018YFC1801706-01);贵州省科技计划项目(黔科合[2020]1Y055);贵州省科技计划项目(黔科合平台人才[2017]5788-56);贵州省科技计划项目(黔科合[2019]2835)

Study on preparation of hollow α-Fe2O3 nanobelts and their photocatalytic properties

  • Chenxin Wang ,
  • Meili Chen ,
  • Mengkui Tian ,
  • Wanliang Yang
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  • School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China

Received date: 2020-08-12

  Online published: 2021-07-08

摘要

采用煅烧三聚氰胺硝酸铁超分子水凝胶前驱体的方法,成功制备了新型镂空纳米带状α-氧化铁(NB-α-Fe2O3)。以NB-α-Fe2O3为光催化剂,讨论了催化剂用量和过氧化氢用量对光催化降解罗丹明B(RhB)的影响,并考察了催化剂的稳定性。通过X射线衍射仪(XRD)、扫描电镜(SEM)、透射电镜(HR-TEM)、比表面积测试仪(BET)和X射线光电子能谱仪(XPS)等对α-氧化铁的形貌、结构和组成进行了分析。结果显示,制备的氧化铁属于α晶相,具备较好的结晶度,是由粒径为40~70 nm的颗粒组装成镂空纳米带状结构。通过考察不同催化剂用量和过氧化氢用量对光催化降解RhB效果的影响,发现适宜的催化剂用量为30 mg、过氧化氢用量为0.5 mL。在适宜条件下NB-α-Fe2O3催化剂可见光降解RhB循环4次后降解率仍达到96.8%。制备的NB-α-Fe2O3具有良好的光催化活性与稳定性。

本文引用格式

王晨鑫 , 陈美丽 , 田蒙奎 , 杨万亮 . 镂空α-氧化铁纳米带制备及其光催化性能研究[J]. 无机盐工业, 2021 , 53(6) : 185 -189 . DOI: 10.19964/j.issn.1006-4990.2020-0426

Abstract

A novel hollow nanobelt α-Fe2O3(NB-α-Fe2O3) was successfully prepared by calcination of hydrogel precursor of melamine ferric nitrate supramolecular.Using NB-α-Fe2O3 as photocatalyst,the influence of the amount of catalyst and H2O2 on the performance of photocatalytic degradation of rhodamine B(RhB) were discussed,and the stability of the catalyst was investigated.The morphology,structure and composition of the as-prepared NB-α-Fe2O3 were analyzed by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(HR-TEM),surface area tester(BET) and X-ray photoelectron spectroscopy(XPS).The results showed that the prepared iron oxide belonged to α crystal phase and had good crystallinity,and the hollow nanobelt was assembled by α-Fe2O3 particles with 40~70 nm diameter.The effects of different amount of catalyst and hydrogen peroxide on the photocatalytic degradation of RhB were investigated.It was found that the optimal amount of catalyst and hydrogen peroxide were 30 mg and 0.5 mL,respectively.Under suitable conditions,after four cycles of visible light degradation RhB,the degradation efficiency of NB-α-Fe2O3 could still reach 96.8%.The as-prepared NB-α-Fe2O3 had good photocatalytic activity and stability.

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