We discovered the in situ generation of S-doped carbon sandwiched between the MoS2 nano-sheets during pyrolysis of Mo(VI)-polydopamine (PDA) in the presence of elemental sulfur. This causes enrichment of MoS2 with more edge planes (2H → 1T), also resulting in enhanced charge density and electronic conductivity. The phase transformed MoS2[@S-C(PDA)] exhibits enhanced HER activity with η = 160 mV at a current density of 10 mA cm(-2).

Herein, we report the first synthesis of a light-weight macroporous 3-D alloy monolith of Ni-Fe/C using synergism between polydopamine (pDA) and polyurethane (pU); in situ formed polyurethane (pU) enables efficient mixing of pDA (carbon source) and Ni-FeOx resulting in Ni-Fe alloy monoliths at a temperature as low as ∼600 °C. The monolithic Ni-Fe/C exhibits enhanced oxygen evolution activity.

Simple synthesis of a ferrocene-functionalized polydopamine [poly(DA-Fc)] is described. This redox film displays excellent electrocatalytic oxidation of H2O2 in neutral buffer solutions in a Fenton-type reaction, and is found to be selective to H2O2 with negligible interference from other small molecules.

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