Use of Oxalic-Acid-Modified Stellerite for Improving the Filter Capability of PM_2.5 of Paper Composed of Bamboo Residues

Table 2

Pore structure analysis of fibers and stellerite.

Sample	Specific surface area; (, m^2g^−1)	Pore volume; (, cm^3g^−1)	Pore size; (, nm)	Yield; (%)
P1
P2
P3
P4
P5
P6
Natural stellerite				—
Modified stellerite