Light-management (LM) films that
can regulate transmitted light
are significant to diverse fields, such as optoelectronics and energy-efficient
buildings. However, for conventional LM films made from petroleum-based
polymers, the nonbiodegradability and complicated fabrication process
remain a challenge. Herein, we prepare sustainable lignocellulose-based
films with excellent light-management capability by facile dissolution
and regeneration of wood pulp and the corncob residue from xylitol
production (CRXP). The obtained films exhibit high transparency (78%),
high haze (61%), and especially remarkable UV-blocking performance
(99.94% for UVB and 98.04% for UVA). They achieve consistent indoor
light distribution and UV radiation shielding by light management
for the application of smart buildings. Furthermore, by spray-coating
with SiO2 nanoparticles to construct hierarchical networks,
the films are endowed with a superhydrophobic surface with a self-cleaning
function to mitigate dust accumulation. Our work provides novel insights
into the conversion of lignocellulosic waste to desirable and sustainable
functional materials.