Journal
CARBON
Volume 50, Issue 13, Pages 4847-4855Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.06.011
Keywords
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Funding
- National Natural Science Foundation of China [50972092]
- Shanghai Key Laboratory of the Rare Earth Functional Materials [07dz22303]
- Key Subject of Education Ministry of China [210075]
- Shanghai Municipal Education Commission [10ZZ84]
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Two or three types of semiconductor nanoparticles (NPs) have been deposited on the sidewalls of multi-wall carbon nanotubes (MWCNTs) by a solvothermal treatment of a mixture containing poly(sodium 4-styrenesulfonate) (PSS) wrapped MWCNTs, metal chloride (CuCl2 and SnCl2), and thiourea. Changing the ratio of Cu2+ to Sn2+ alters the composition of the resultant MWCNT-PSS-NP hybrids. Under Cu/Sn ratios of 3:1 and 2:1, MWCNTs can be simultaneously decorated with Cu2S and Cu3SnS4 NPs. When the ratio is reduced to 1:1, Cu3SnS4, Cu2S and SnO2 NPs would be formed at the same time. Further decreasing the ratio results in the formation of Cu2SnS3 and SnO2 instead of Cu3SnS4 and Cu2S. Open-aperture z-scan measurements have been carried out on three typical MWCNT-PSS-NP samples to study their optical limiting (OL) properties. The addition of semiconductor NPs can improve the OL performance of MWCNTs, and the composition of the NPs has a significant effect on the OL behavior of the hybrids. (C) 2012 Elsevier Ltd. All rights reserved.
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