Research Article

An Efficient Process for Pretreatment of Lignocelluloses in Functional Ionic Liquids

Figure 3

SEM analysis of corn stalk and cellulose-rich materials. (a) Untreated corn stalk; (b) [BMIM]Cl/DMSO; (c) [HMIM]Cl; (d) [HSO3-pMIM]Cl; (b′) [BMIM]Cl/DMSO/H2O; (c′) [HMIM]Cl/H2O; (d′) [HSO3-pMIM]Cl/H2O.