引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 662次   下载 632 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Preparation and Visible-Light Photocatalytic Activity of FeTPP-Cr-TiO2 Microspheres
Bing-hua Yao,Chao Peng,Yang-qing He,Wen Zhang,Yan Yu,Ting Zhang
Author NameAffiliationE-mail
Bing-hua Yao Department of Applied Chemistry, Xian University of Technology, Xi'an 710048, China bhyao@xaut.edu.cn 
Chao Peng Department of Applied Chemistry, Xian University of Technology, Xi'an 710048, China;School of Materials Science and Engineering, Xian University of Technology, Xi'an 710048, China  
Yang-qing He Department of Applied Chemistry, Xian University of Technology, Xi'an 710048, China  
Wen Zhang Department of Civil Engineering, University of Arkansas, Fayetteville 72701, USA wenzhang@uark.edu 
Yan Yu Department of Applied Chemistry, Xian University of Technology, Xi'an 710048, China  
Ting Zhang Department of Applied Chemistry, Xian University of Technology, Xi'an 710048, China  
Abstract:
Tetraphenyl-porphyrin iron (FeTPP) was chosen to sensitize Cr doped TiO2 (Cr-TiO2) nanoparticles, a novel multimodified photocatalyst FeTPP-Cr-TiO2 with excellent visiblelight photocatalytic activity was successfully synthesized. The FeTPP-Cr-TiO2 microspheres were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electronic microscopy, X-ray photoelectron spectroscopy, UV-Vis diffuse reflectance spectra and N2 adsorption-desorption isotherms. The photocatalytic activity of FeTPP-Cr-TiO2 was evaluated by degradations of methylene blue in aqueous solution under irradiation with Xe lamp (150 W). The results showed that the FeTPP-Cr-TiO2 multimodified photocatalyst was anatase phase with high specific surface area (74.7 m2/g), and exhibited higher photocatalytic degradation efficiency than Cr-TiO2 and FeTPP-TiO2. The photocatalytic degradations of three quinolone antibiotics (lomefloxacin, norfloxacin, and ofloxacin) were further estimated for the feasibility of practical application of catalyst in wastewater treatment. It is desirable that photodegradation of antibiotics with FeTPP-Cr-TiO2 achieved pretty high degradation rates and all followed the pseudo first-order reaction model, and the rate constants k of 3.02×10-2, 2.81×10-2, and 3.86×10-2 min-1 and the half-lifes t1/2 of 22.9, 24.6, and 17.9 min were achieved respectively.
Key words:  Titanium dioxide  Chromium doping  Metalloporphyrin  Multimodified photocatalyst  Visible-light photocatalysis  Antibiotics
FundProject:
FeTPP-Cr-TiO2微球的制备及其可见光催化性能
姚秉华,彭超,何仰清,张文,于艳,张亭
摘要:
通过四苯基铁卟啉敏化Cr掺杂TiO2微球成功合成了一种复合改性可见光催化剂FeTPP-Cr-TiO2.利用XRD、FT-IR、SEM、XPS、UV-Vis和N2吸附-脱附等温线等技术对其结构和形貌进行了表征.以亚甲基蓝为目标降解物,在150 W氙灯的辐照下,考察了其可见光催化活性.结果表明FeTPP-Cr-TiO2呈锐钛矿相,表面积为74.7 m2/g.与Cr-TiO2和FeTPP-TiO2相比,FeTPP-Cr-TiO2表现出很好的可见光降解性能.以三种喹诺酮类抗生素(洛美沙星、诺氟沙星和氧氟沙星)为实验对象,考察了FeTPP-Cr-TiO2降解水体中抗生素的可行性,对三种抗生素均有很高的降解率,降解过程符合一级动力学模型,反应动力学常数分别为3.02×10-2、2.81×10-2和3.86×10-2min-1,半衰期为22.9、24.6及17.9 min.
关键词:  TiO2  Cr掺杂  金属卟啉  多改性光催化剂  可见光催化  抗生素
DOI:10.1063/1674-0068/29/cjcp1605117
分类号: