Synthesis of a CuNP/chitosan/black phosphorus nanocomposite for non-enzymatic hydrogen peroxide sensing.

A copper-chitosan-black phosphorus nanocomposite (CuNPs-Chit-BP) was fabricated by electrochemically depositing copper nanoparticles onto a black phosphorus-modified glassy carbon electrode in chitosan solution. CuNPs demonstrated a uniform distribution on the Chit-BP modified GCE with an average size of 20 nm. Electrochemical methods were used to study the catalytic activity of the CuNPs-Chit-BP nanocomposite toward hydrogen peroxide.

Synthesis of a Poly-l-Lysine/Black Phosphorus Hybrid for Biosensors.

A simple, noncovalent modification strategy was proposed to synthesize poly-l-lysine-black phosphorus (pLL-BP) hybrid. BP nanoflakes were prepared with a water-phase exfoliation method. pLL can adhere to the surface of BP via hydrophobic interaction between butyl chains of pLL and the BP surface as well as the electrostatic interaction between the protonated amino groups on pLL and the negative charge on deprotonated PO groups remaining on BP.