  We investigate a family of spherically symmetric, static, charged regular
black hole solutions derived within the framework of Einstein-nonlinear
electrodynamics. Our study focuses on examining the characteristics of
accretion disks in the spacetimes described by the Dymnikova and Fan-Wang
solutions. We explore circular geodesics of test particles and calculate
various properties, including the radius of the innermost stable circular
orbit, radiant energy, temperature, and conversion efficiency of accretion mass
into radiation. We employ the Novikov-Thorne-Page thin accretion disk model as
a background. By comparing our findings with those obtained in the
Schwarzschild black hole case, we reveal significant modifications in the
overall spectral properties. Specifically, we observe an increase in the energy
emitted from the disk surface, resulting in higher temperatures for the
accretion disks under certain values of the free parameters. Consequently, we
note an enhanced efficiency of mass conversion into radiation compared to the
Schwarzschild spacetime.
