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Synthesis of Dual‐Responsive Materials with Reversible and Switchable Phase‐Transition Properties for High‐Performance Cellulose Enzymatic Hydrolysis
Author(s) -
Zhu Xing,
Tian Yi,
He Bin,
Gan Ting,
Hu Xiao,
Wang Xuechuan
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201903046
Subject(s) - cellulase , cellulose , hydrolysis , cellulosic ethanol , enzymatic hydrolysis , chemistry , leaching (pedology) , chemical engineering , organic chemistry , materials science , environmental science , soil science , soil water , engineering
The solid–solid (immobilized cellulase–insoluble cellulose) phase cellulose hydrolysis reaction is significant in cellulosic biomass conversion processes but hindered because of its low efficiency. Herein, a smart temperature–pH dual‐responsive material (D‐N‐N material) was prepared to be used as a carrier for cellulase recovery. This D‐N‐N material could undergo reversible and switchable transitions between solution, hydrogel, and solid phases. The following results were demonstrated: 1) the hydrolytic degree of this strategy could be as high as that of free cellulase in buffer solution; 2) the cellulase could be encapsulated into the D‐N‐N hydrogel without significant leaching and most of the cellulase activity was retained after recycling for at least 10 batches; and 3) more than 95 % of the glucose inside the hydrogel could be extracted during the hydrogel–solid transition within 1 h, which can assist in the high‐efficiency separation of cellulase from glucose. The results suggested that this strategy provides a feasible platform for efficient cellulose hydrolysis and could be applied to other bio‐derived reactions.