High density decoration of noble metal nanoparticles on polydopamine-functionalized molybdenum disulphide

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Here, we report a highly stable colloidal suspension of nanoparticles (i.e., Pt and Au)-deposited MoS2 sheets, in which polydopamine (PD) serves as surface functional groups. The adoption of polydopamine coating onto the MoS2 surface enables homogeneous deposition of nanoparticles in an aqueous solution. As-synthesized nanohybrids are thoroughly characterized by transmission electron microscopy (TEM), Raman spectroscopy, and X-ray diffraction (XRD) measurement. These intensive investigations reveal that noble metal nanocrystals are uniformly distributed on the surface of ultrathin MoS2 sheets (similar to 4 layers). Moreover, as-prepared Au/PD/MoS2 nanohybrids can be applied as a heterogeneous catalyst for reduction of 4-nitrophenol to 4-aminophenol, and they exhibit an excellent catalytic activity.
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Issue Date
2015-08
Language
English
Article Type
Article
Keywords

SONOCHEMICAL SYNTHESIS; GRAPHENE; MOS2; NANOSHEETS

Citation

JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.451, pp.216 - 220

ISSN
0021-9797
DOI
10.1016/j.jcis.2015.03.062
URI
http://hdl.handle.net/10203/200944
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