Novel cake-like N-doped anatase/rutile mixed phase TiO2 derived from metal-organic frameworks for visible light photocatalysis

被引：57

作者：

Li, Jinliang ^{[1
]}

Xu, Xingtao ^{[1
]}

Liu, Xinjuan ^{[2
]}

Qin, Wei ^{[3
]}

Pan, Likun ^{[1
]}

机构：

[1] East China Normal Univ, Shanghai Key Lab Magnet Resonance, Sch Phys & Mat Sci, Shanghai 200062, Peoples R China

[2] China Jiliang Univ, Inst Coordinat Bond Metrol & Engn, Coll Mat Sci & Engn, Hangzhou 310018, Zhejiang, Peoples R China

[3] Sun Yat Sen Univ, Sch Mat Sci & Engn, Nanotechnol Res Ctr, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2017年 / 43卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Metal-organic frameworks; Cake-like TiO2; Anatase/rutile mixed phase; N doping; Photocatalysis; LITHIUM ION BATTERIES; TITANIUM-DIOXIDE; GRAPHENE OXIDE; SINGLE-CRYSTAL; CARBON NITRIDE; ANODE MATERIAL; PERFORMANCE; NANOCOMPOSITES; IRRADIATION; HOLLOW;

D O I：

10.1016/j.ceramint.2016.10.017

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Novel cake-like N-doped anatase/rutile mixed phase TiO2 (A/R N-TiO2) was successfully prepared through the pyrolysis of metal-organic frameworks MIL-125 and subsequent annealing in ammonia atmosphere. The morphology, structure and photocatalytic performance of A/R N-TiO2 in the degradation of Rhodamine B (RhB) were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, UV-vis absorption spectroscopy and electrochemical impedance spectra, respectively. The results show that the A/R N-TiO2 exhibits excellent photocatalytic performance. By optimizing the annealing temperature in ammonia atmosphere, a maximum RhB degradation rate of 93% under visible light irradiation is achieved. The improved photocatalytic performance is ascribed to the enhanced light absorption as well as the reduced electron-hole pair recombination after the N doping and the presence of stepwise energy levels in anatase and rutile TiO2.

引用

页码：835 / 840

页数：6

共 53 条

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