In this research, cellulase enzyme is immobilized onto MWCNTsthrough the physical absorption method by – stacking inter-action with the aids of non-covalent hydrogen bond generatedin between carboxylic groups on the functionalized MWCNTs andamide groups from cellulase enzyme.π-π堆积一般都是苯环上的作用力,这里说羧基跟氨基上的要怎么理解