'can be mainly attributed' is correct and usable in written English.
You can use it when you are describing or explaining why something has happened. For example: "The success of the project can be mainly attributed to the dedication of the team."
The improvement of impact strength can be mainly attributed to the increase of random copolymer content.
These late 19th century developments, we argue, can be mainly attributed to anthropogenic factors and contributing climatic drivers.
The excellent lithium storage performance can be mainly attributed to the pore size-graded structure design of the thick film.
The increased photocurrent can be mainly attributed to the larger active surface area and more effective charge transfer.
These problems can be mainly attributed to the drill string tripping and the low strength of coal.
The thermal stability of this alloy can be mainly attributed to the reduction of grain-boundary energy.
The enhanced lithium storage capacities can be mainly attributed to the designed nanostructure of ternary CoNi2S4, good conductivity, and the synergistic effects between cobalt sulfides and nickel sulfides.
This can be mainly attributed to the inadequate pore architecture of scaffolds produced by RP and the limited efficiency of cell seeding techniques normally adopted.
The excellent lithium storage performances of the obtained MoS2/GN composite can be mainly attributed to the designed novel structure of the composite.
The higher catalytic efficiency is due to the increase in kcat, and can be mainly attributed to a deshielding of catalytic His-158 from the bulk-solvent.
The excellent improvement in ultimate tensile strength can be mainly attributed to the ellipsoid network microstructure, load-bearing of TiBw and grain refinement.
