The multifunctional material can readily adsorb even VOCs, which exhibits high photocatalytic activity and functions as visible-light-responsive photocatalyst by virtue of a large surface area and of being doped with carbon, has high hardness and exhibits excellent exfoliation resistance, wear resistance, resistance to chemicals, and heat resistance. The present invention also relates to a Spinacia oleracea plant produced by growing the 51-706 RZ seed. A device for implementing the method is also disclosed. The fibers have a diameter in the range of 0.