Cobalt phosphide-loaded biochar synthesis using phosphate-accumulating yeast and its application as an electrocatalyst.

ABSTRACT: A phosphorus (P)-accumulating mutant strain of Saccharomyces cerevisiae is used as a precursor for transition metal phosphides (TMPs) biochar. Tetrahydrofuran treatment of the P-accumulating yeast coupled with pyrolysis resulted in the formation of CoP-loaded biochar (CoP@P-yeast) unlike previously reported Co₂P-loaded biochar using dry baker's yeast. The CoP@P-yeast exhibited the electrocatalytic activity for the hydrogen evolution with an overpotential of -192 mV at 10 mA cm^-2. Furthermore, the CoP@P-yeast showed the highest ammonia production rate of 33 mg-NH₃ h^-1 mg-catalyst^-1 in nitrate reduction reaction, as well as much higher than that with platinum on graphitized carbon. Scanning electron microscopy and transmission ele

SUBMITTER: Ojima Y 

PROVIDER: S-EPMC11787416 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature