Design of C-dots/Fe3O4 magnetic nanocomposite as an efficient new nanozyme and its application for determination of H2O2 in nanomolar level

作者：Yousefinejad Saeed; Rasti Hamid; Hajebi Mehdi; Kowsari Masoud; Sadravi Shima; Honarasa Fatemeh^*

来源：Sensors and Actuators B: Chemical , 2017, 247: 691-696.

DOI：10.1016/j.snb.2017.02.145

• Nanozyme
• C-dots
• Magnetic nanoparticles
• Horseradish peroxidase
• Hydrogen peroxidea

A new nanocomposite was synthesized by using of carbon dots and magnetic nanoparticles as precursors. TEM images and spectra of FT-IR, XRD and EDS confirmed the presence of nanocomposite in the solution. The synthesized nanocomposite shows intrinsic peroxidase-like activity. The main advantage of synthesized nanocomposite is its higher peroxidase-like activity rather than both individual C-dots and magnetic nanoparticles. Also, the introduced nanocomposite was used for colorimetric determination of hydrogen peroxide with linear range of 1.0 x 10(-8) M to 1.0 x 10(-3) M and LOD of 1.0 x 10(-9) M.

• 出版日期2017-8