Jump to main content
Jump to site search

Issue 24, 2014
Previous Article Next Article

Highly efficient reusable catalyst based on silicon nanowire arrays decorated with copper nanoparticles

Author affiliations

Abstract

Non-noble metal copper (Cu) nanoparticles (NPs) with controlled size and surface coverage are decorated on silicon nanowire arrays (SiNWAs) by a simple galvanic displacement reaction. Using the combined efforts of all these approaches, SiNWAs-supported Cu NPs (SiNWAs–Cu) exhibit excellent and stable activity for the catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) by sodium borohydride (NaBH4) in an aqueous solution, which can be recycled for five successive cycles of the reaction with a conversion efficiency of more than 95%. This novel catalyst also shows excellent catalytic performance for the degradation of other organic dyes, such as methylene blue (MB) and rhodamine B (RhB). Additionally, we demonstrate that the catalytic activity of SiNWAs–Cu is comparable to other SiNWAs-supported noble metal NPs (i.e., Ag and Au). Furthermore, SiNWAs as powerful substrates can be reused for decorating with Cu NPs after dilute HNO3 treatment. SiNWAs–Cu is particularly attractive as a catalyst, although Cu is orders of magnitude cheaper than any noble metals, its catalytic performance is comparable to other noble metals. So SiNWAs–Cu is thus expected to have the potential as a highly efficient, cost-effective and eco-friendly reusable catalyst to replace noble metals for certain catalytic applications.

Graphical abstract: Highly efficient reusable catalyst based on silicon nanowire arrays decorated with copper nanoparticles

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Jan 2014, accepted on 25 Feb 2014 and first published on 26 Feb 2014


Article type: Paper
DOI: 10.1039/C4TA00119B
J. Mater. Chem. A, 2014,2, 9040-9047

  •   Request permissions

    Highly efficient reusable catalyst based on silicon nanowire arrays decorated with copper nanoparticles

    X. Yang, H. Zhong, Y. Zhu, H. Jiang, J. Shen, J. Huang and C. Li, J. Mater. Chem. A, 2014, 2, 9040
    DOI: 10.1039/C4TA00119B

Search articles by author

Spotlight

Advertisements