Electroanalysis
Electroanalysis
3 years ago

Facile Synthesis of Cuprous Oxide/Gold Nanocomposites for Nonenzymatic Amperometric Sensing of Hydrogen Peroxide

Facile Synthesis of Cuprous Oxide/Gold Nanocomposites for Nonenzymatic Amperometric Sensing of Hydrogen Peroxide
Hongyan Bai, Lichun Liu, Liqiu Zhang, Hongxia Shen
In this work, a facile preparation method of cuprous oxide/gold (Cu2O/Au) nanocomposite was successfully developed. The process consisted of one-pot co-reduction of HAuCl4 and CuSO4 using ascorbic acid (AA) as a reducing agent at room temperature under magnetic stirring. The structures and compositions of the as-prepared products were characterized by SEM, EDS, and XRD. Cyclic voltammetry and chronopotentiometry studies revealed that the as-prepared cubic Cu2O/Au nanocomposites showed enhanced performance towards the non-enzymatic catalytic reduction of hydrogen peroxide (H2O2) when compared to single-component Cu2O nanocubes. The linear range of H2O2 determination spanned over 4 orders of magnitude (1 μM∼16.7 mM) and the detection limit was low as 0.45 μM (S/N=3). The enhanced performance of cubic Cu2O/Au was attributed to: i) the synergistic effect between Cu2O and Au, ii) the increase in surface area induced by the reduced size of the nanocubes, and iii) the improved electrical conductivity due to the presence of Au in the particles. Overall, the cubic Cu2O/Au nanocomposites prepared by the proposed method hold great promise for future practical use in H2O2 detection.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/elan.201700424

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.