李新勇

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:男

毕业院校:中国科学院兰州化学物理研究所

学位:博士

所在单位:环境学院

办公地点:环境楼 B415

联系方式:Tel: 0411-84706658

电子邮箱:xyli@dlut.edu.cn

扫描关注

论文成果

当前位置: 李新勇 >> 科学研究 >> 论文成果

Surface photovoltage property of magnesium ferrite/hematite heterostructured hollow nanospheres prepared with one-pot strategy

点击次数:

论文类型:期刊论文

发表时间:2012-06-05

发表刊物:COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录刊物:SCIE、EI

卷号:403

页面范围:35-40

ISSN号:0927-7757

关键字:Surface photovoltage property; Solvothermal synthesis; Magnesium ferrite/hematite; Hollow nanosphere

摘要:Magnesium ferrite/hematite heterostructured hollow nanospheres were successfully fabricated via a facile solvothermal method. The products were well characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high resolution transmission electron microscopy, Fourier transform infrared spectroscopy. UV-vis absorption spectroscopy and surface photovoltage spectroscopy. From the absorption edge in the UV-vis absorption spectrum of MgFe2O4/alpha-Fe2O3 hollow nanospheres, an optical band-gap energy of about 1.986 eV was estimated. Furthermore, it was observed that the heterostructured hollow nanospheres presented a remarkable surface photovoltage response in UV and visible spectral region, which was attributed to the effective formation of chemical interface between the two crystalline phases of MgFe2O4 and alpha-Fe2O3. (C) 2012 Elsevier B.V. All rights reserved.