Multifunctional Cellulose Nanopaper with Superior Water-Resistant, Conductive, and Antibacterial Properties Functionalized with Chitosan and Polypyrrole

Du, Hao; Parit, Mahesh; Liu, Kun; Zhang, Miaomiao; Jiang, Zhihua; Huang, Tung‐Shi; Zhang, Xinyu; Si, Chuanling

doi:10.1021/acsami.1c06647

Cited by 78 publications

(32 citation statements)

References 63 publications

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“…The content and composition of hemicellulose vary greatly with plant species, maturity, early and late wood, cell type, and morphological position ( Scheller and Ulvskov, 2010 ). Hemicellulose pyrolysis is a fundamental thermochemical conversion process, which is a very complex reaction ( Yang et al, 2007 ; Du et al, 2021a ; Xu T. et al, 2021 ). Therefore, the exact mechanism for hemicellulose pyrolysis still needs to be explored.…”

Section: Introductionmentioning

confidence: 99%

The Kinetics Studies on Hydrolysis of Hemicellulose

Yuan

Liu

et al. 2021

Front. Chem.

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The kinetics studies is of great importance for the understanding of the mechanism of hemicellulose pyrolysis and expanding the applications of hemicellulose. In the past years, rapid progress has been paid on the kinetics studies of hemicellulose hydrolysis. In this article, we first introduced the hydrolysis of hemicelluloses via various strategies such as autohydrolysis, dilute acid hydrolysis, catalytic hydrolysis, and enzymatic hydrolysis. Then, the history of kinetic models during hemicellulose hydrolysis was summarized. Special attention was paid to the oligosaccharides as intermediates or substrates, acid as catalyst, and thermogravimetric as analyzer method during the hemicellulose hydrolysis. Furthermore, the problems and suggestions of kinetic models during hemicellulose hydrolysis was provided. It expected that this article will favor the understanding of the mechanism of hemicellulose pyrolysis.

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Section: Introductionmentioning

confidence: 99%

The Kinetics Studies on Hydrolysis of Hemicellulose

Yuan

Liu

et al. 2021

Front. Chem.

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“…Meanwhile, the introduction of conductive polymer into carbon fiber can generate more electrochemical active sites for a rapid charge–discharge conversion reaction, thus further improving the electrochemical performance ( Zhang et al, 2017 ). Polypyrrole (PPy) is one of the most widely studied conductive polymers, which has a broad application prospect in supercapacitors due to its excellent energy storage capacity, easy synthesis, and high conductivity ( Tian et al, 2019 ; Du et al, 2021 ; Yuan and Ma, 2021 ). Unfortunately, PPy as a supercapacitor electrode undergoes continuous expansion and contraction during the doping/de-doping process, which reduces its cyclic stability and electrochemical performance ( Tian et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Lignin-Based/Polypyrrole Carbon Nanofiber Electrode With Enhanced Electrochemical Properties by Electrospun Method

Kim

et al. 2022

Front. Chem.

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Tailoring the structure and properties of lignin is an important step toward electrochemical applications. In this study, lignin/polypyrrole (PPy) composite electrode films with microporous and mesoporous structures were designed effectively by electrostatic spinning, carbonization, and in situ polymerization methods. The lignin can not only reduce the cost of carbon fiber but also increase the specific surface area of composite films due to the removal of carbonyl and phenolic functional groups of lignin during carbonization. Besides, the compact three-dimensional (3D) conductive network structures were constructed with PPy particles densely coated on the lignin nanofibers, which was helpful to improve the conductivity and fast electron transfer during the charging and discharging processes. The synthesized lignin carbon fibers/PPy anode materials had good electrochemical performance in 1 M H2SO4 electrolyte. The results showed that, at a current density of 1 A g−1, the lignin carbon nanofibers/PPy (LCNFs/PPy) had a larger specific capacitance of 213.7 F g−1 than carbon nanofibers (CNFs), lignin carbon nanofibers (LCNFs), and lignin/PPy fiber (LPAN/PPy). In addition, the specific surface area of LCNFs/PPy reached 872.60 m2 g−1 and the average pore size decreased to 2.50 nm after being coated by PPy. Therefore, the independent non-binder and self-supporting conductive film is expected to be a promising electrode material for supercapacitors with high performance.

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“…Cellulose can be used to make paper, paperbased materials, hydrogels, and aerogel [23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39]. Besides, cellulose and its derivatives can be applied in the field of electrical materials [40][41][42][43][44][45]. Cellulose can also be used to produce platform compounds [46][47][48][49][50][51][52][53][54][55][56].…”

Section: Introductionmentioning

confidence: 99%

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Xie

Tian

Liu

et al. 2022

Adv Compos Hybrid Mater

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There are plant cuticle and complex cell walls on the outer surface of cotton stalk bark (CSB), which reduce the efficiency of liquid penetration of CSB. To increase the permeability of liquids, these barriers need to be broken. Cellulase can selectively hydrolyze cellulose into glucose, and its action conditions are mild. Therefore, cellulase treatment is one of the excellent ways to break the CSB liquid permeation barrier. This experiment studied the effects of different amounts of cellulase treatment on the enzymatic hydrolysis products and surface of CSB. Scanning electron microscopy (SEM) and nano-CT were used to observe the changes in the microscopic morphology of CSB. Ion chromatography and an ultraviolet–visible spectrophotometer were used to determine the dissolution of CSB. The results showed that the cuticle of CSB treated with cellulase was broken, and the cell wall of phloem fibers became thinner, which increased the accessibility of liquid. The content of monosaccharide and lignin in CSB treatment solution increased with the increase of cellulase dosage. Correspondingly, the proportion of polysaccharides on the outer surface of CSB continued to decline and eventually stabilized. These experimental results can provide a reference for improving the permeability of natural fibers and the subsequent treatment effects of biomass products. Graphical abstract The pretreatment of cotton stalk barks with cellulase destroyed the dense protective structure of cell wall, and the content of monosaccharide and lignin in the treated solution increased with the increase of cellulase dosage.

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Multifunctional Cellulose Nanopaper with Superior Water-Resistant, Conductive, and Antibacterial Properties Functionalized with Chitosan and Polypyrrole

Cited by 78 publications

References 63 publications

The Kinetics Studies on Hydrolysis of Hemicellulose

The Kinetics Studies on Hydrolysis of Hemicellulose

Lignin-Based/Polypyrrole Carbon Nanofiber Electrode With Enhanced Electrochemical Properties by Electrospun Method

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

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