# Sulfidation rate constant

Describes the rate at which a metal-based nanoparticle reacts with available sulfide to form metal sulfides.

## Procedure

 $F_{CuO,t}=e^{-k't}$ Where $$F_{CuO,t}$$ is the remaining fraction of $$CuO$$ at time $$t$$ of the reaction of $$CuO$$ with $$HS^{-}$$, $$k$$ is the Pseudo first-order reaction rate coefficient and $$t$$ is the time. Pseudo first-order reaction rate coefficient $$k$$ is defined as: $k = 6.4 \text{ mM}^{-1} \text{min}^{-1}$ $k' = k \cdot [HS^-]$