期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 44, 期 2, 页码 870-879出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.11.027
关键词
Co3O4 nanosheet; Petal; Biotemplate; Photocatalysis; Multiple-porous structure
资金
- National Natural Science Foundation of China [21606146]
- Natural Science Foundation of Shandong Province [ZR2016BB17]
- Scientific Research Foundation of Shandong University of Science and Technology for Recruited Talents [2016RCJJ005]
A biomorphic Co3O4 nanosheet was fabricated by using China rose petal as biotemplate. Ultraviolet-visible diffuse reflectance spectroscopy, nitrogen adsorption, Fourier transform infrared spectroscopy, thermogravimetric analysis-differential scanning calorimetric analysis, scanning electron microscopy, transmission electron microscopy and powder X-ray diffraction were utilized to characterize the samples. The results revealed that the synthesized Co3O4 sample exhibited the special 2D nanosheet morphology with the thickness of around 100 nm similar to the original peal. The 2D nanosheet structure and multiple-porous feature of the sample not only increased its specific surface area and more active sites for photodegradation reaction, but also facilitated mass transfer, light scattering and harvesting as well as inhibition of the photogenerated carrier recombination. Moreover, compared with the commercial Co3O4, the as-prepared Co3O4 nanosheet showed a superior photocatalytic activity due to its 2D multiple-porous nanosheet structure and high specific surface area (51.36 m(2) g(-1)). (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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