期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 644, 期 -, 页码 140-146出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2015.04.193
关键词
Ni2P; Ni12P5; Hydrothermal; Surfactant; Yolk-shell; Photocatalysis
资金
- National Natural Science Foundation of China [21301113]
- Scientific Research Planning Program of the Education Department of Shaanxi Province [2013JK0684]
- Graduate Innovation Fund of Shaanxi University of Science and Technology
In this paper, Ni2P solid spheres and Ni12P5 yolk-shell microspheres have been fabricated successfully via two different hydrothermal systems, using sodium dodecyl benzene sulfonate/sodium dodecyl sulfate (SDBS/SDS) and sodium dodecyl benzene sulfonate/cetyltrimethyl ammonium bromide (SDBS/CTAB) as stabilized system, respectively. The yolk-shell Ni12P5 spheres exhibited the size of around 900 nm, which made up mainly the shells with a thickness of 110 nm and the cores with a diameter of 350 nm on average. With the heating time increasing from 0 to 36 h, Ni12P5 structures transformed from yolk-shell microspheres to hollow spheres. Based on a series of surfactant-dependent and time-dependent experiments, the optimum proportion of mixed surfactant and the formation mechanism of Ni12P5 yolk-shell microstructures were discussed. Importantly, the as-prepared Ni2P and Ni12P5 possess excellent photocatalytic activities for both degradation Congo red (CR) and Safranine T (ST) dyes. Crown Copyright (C) 2015 Published by Elsevier B.V. All rights reserved.
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