期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 802, 期 -, 页码 430-436出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.06.237
关键词
Inorganic materials; Nanostructured materials; Chemical synthesis; Magnetic measurements; Optical spectroscopy
资金
- National Natural Science Foundation of China [21371132]
- Tianjin Municipal Science & Technology Commission [07JCYBJC18600]
- Training Project of Innovation Team of Colleges and Universities in Tianjin [TD135020]
Cubic phase of novel hollow hyperbranched Cu2-xSe with nanosheets hierarchical structure was prepared on a Cu foil substrate by a facile solution route, using CuO nanosheets film as a precursor, and its formation mechanism was explored. The optical, gas sensing and superparamagnetic properties of the hollow hyperbranched Cu2-xSe were studied. The results show that the hollow hyperbranched Cu2-xSe microstructure could grow as long as 118 mu m with diameters of 2-4 mu m. Each hyperbranched Cu2-xSe contains four orthogonally located side branches and each side branch is composed of four orthogonal sub-branches which are assembled by numerous parallelly located nanosheets. The hollow hyperbranched Cu2-xSe microstructures were formed through the transformation reactions from CuO nanosheets to Cu2-xSe nanosheets, where the CuO nanosheets function as the sacrificing template, followed by multilevel oriented self-assembly. We found that the ultralong hollow hyperbranched Cu2-xSe microstructures possess extraordinary superparamagnetic property at room temperature. Besides, the Cu2-xSe product displays strong UV-visible light-harvesting ability and excellent gas sensing property to ammonia gas. (C) 2019 Elsevier B.V. All rights reserved.
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