期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 29, 期 1, 页码 157-164出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(18)64924-6
关键词
Zn1-xNixS nanorods; phase-structure; microstructure; photocatalytic activity; hydrothermal method
资金
- National Natural Science Foundation of China [51261015]
- Natural Science Foundation of Gansu Province, China [1308RJZA238]
Pure ZnS and Ni2+-doped ZnS nanorods (Zn1-xNixS, x=0, 0.01, 0.03, 0.05 and 0.07, mole fraction, %) were synthesized by hydrothermal method. The effects of Ni2+ doping on the phase-structure, morphology, elemental composition and optical properties of the samples were investigated by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), X-ray energy dispersive spectrometry (EDS) and ultraviolet-visible spectroscopy (UV-Vis), respectively. The photocatalytic activity of Zn1-xNixS nanorods was evaluated by the photodegradation of organic dyes Rhodamine B (RhB) in aqueous solution under UV light irradiation. The results show that all samples exhibit wurtzite structure with good crystallization. The morphologies are one-dimensional nanorods with good dispersion, and the distortion of the lattice constant occurs. The band gap of Zn1-xNixS samples is smaller than that of pure ZnS, thus red shift occurs. Ni2+-doped ZnS nanocrystals can enhance photocatalytic activities for the photodegradation of RhB. Especially, Zn0.9Ni0.03S sample exhibits better photocatalytic performance and photocatalytic stability for the decomposition of RhB.
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