Chitosan-derived hybrid porous carbon with the novel tangerine pith-like surface as supercapacitor electrode

Yuan, Mengying; Zhang, Yunqiang; Niu, Ben; Jiang, Feng; Yang, Xuan; Li, Mei

doi:10.1007/s10853-019-03911-z

Cited by 42 publications

(25 citation statements)

References 65 publications

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“…Moreover, it is highly hydrophilic due to the presence of hydroxyl and amine groups (Joghataei et al., 2019; de Oliveira et al., 2019). Its applications are as encapsulating agent for controlled release, antimicrobial agent, chelant agent for water treatment, healing of tissues, drug delivery, and as films for packaging (Jeevahan & Chandrasekaran, 2019; Liu et al., 2019; Rubina et al., 2019; Stanciu & Nichifor, 2019; Wang et al., 2019; Z. Yu et al., 2017; Yuan et al., 2019; Zhong et al., 2019). Chitosan is commonly dissolved in organic acids, such as acetic acid, for use in packaging and in food as addictive (Massouda et al., 2012).…”

Section: Introductionmentioning

confidence: 99%

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Oliveira

Ugucioni

Borges

2020

J Food Process Preserv

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Chitosan is a biodegradable polymer and could be applied as packaging. To make chitosan more competitive, plasticizers and cross‐linking agents are added in films. The aim of this paper was to obtain and characterize films of chitosan without or with glutaraldehyde (0; 0.99 mg/150 ml) in different concentrations of glycerol (0, 10, 20, and 30%w/w), for improving the properties like tensile resistance and the water vapor permeability. The films were homogeneous, without phase separation, and with a similar chemical structure. The glutaraldehyde makes the chitosan partly hydrophobic, leading to glycerol saturation in samples with glutaraldehyde and 20 or 30% of glycerol. The Principal Component Analysis for the film with glutaraldehyde and 10% of glycerol presented 3.60 g.mm/kPa.day.m2 of water vapor permeability and 36.96 MPa of tensile resistance. The use of plasticizer and cross‐linking in combination is promising to make chitosan film more competitive on the market of packaging. Practical Applications The addition of glutaraldehyde and glycerol was efficient to improve film properties like water vapor permeability and mechanical properties. The chitosan films with glycerol and glutaraldehyde exhibited similar physical and chemical properties to non‐biodegradable polymers from the petrochemical origin and non‐renewable sources. Furthermore, chitosan films with these additives can be applied as packaging, improving the competitiveness of this biopolymer to the market. The technology described in the paper is important for application as secondary or tertiary packaging in the food industry.

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Section: Introductionmentioning

confidence: 99%

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Oliveira

Ugucioni

Borges

2020

J Food Process Preserv

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“…Usually, the larger the specific surface area of porous carbon, the higher the specific capacitance . However, the specific capacitance is not always linear with its specific surface area, and the main reason is that the microporous structure of the activated carbon limits the wetting of the inner surface of the electrolyte, which makes the high specific surface area of the activated carbon is not fully utilized . It is reported that activated carbon with hierarchical porous structure is favourable for supercapacitors, and various techniques for preparing hierarchical porous carbon (HPC), such as catalytic activation methods, mixed polymer carbonization methods, template methods, et.…”

Section: Introductionmentioning

confidence: 91%

Formation of High Surface Area Hierarchical Porous Carbon Via a Novel Two Step Activation Process for Fast Supercapacitors

Xing

et al. 2020

ChemistrySelect

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Produce of hierarchical porous carbon (HPC) materials that process hierarchical structure, high specific surface area and large pore volume is still a global challenge. Here we develop a novel sample two‐step activation method, which introduces Ca(OH)2 at the first step to produce the meso‐macro porous structure and KOH at the second step to create micropores, to synthesize hierarchical porous carbon using tannin extract as processor. Benefited from this method, the synthesized HPC exhibits the specific surface area of 1996.9 cm2 g−1, pore volume of 1.09 cm3 g−1, and hierarchical porous structure with micro‐meso‐macro pores. The prepared HPC with well‐developed mesopores and micropores can provides ideal channels for ion diffusion with low migration resistances, enabling an excellent power density and cycling stability for supercapacitors, and it exhibits the specific capacitance of 248 F g−1 at 5 A g−1 and maintained at 228 F g−1 at 20 A g−1. Tannin extract is cheap, easy to obtain and environmentally friendly, combined with the excellent electrochemical performances and the well‐developed two‐step method, provides a new idea for the preparation of HPC for high performance supercapacitor.

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“…The prepared ionically cross-linked chitosan hydrogel membrane electrolyte was used as both electrolyte and separator. Zhang et al [ 134 ] synthesized a porous carbon by blending gelatin and chitosan in acetic acid solution through a facile method. The blended product was treated with KHCO 3 to improve the morphology of the carbon material.…”

Section: Applications Of Chitosan Flat Structuresmentioning

confidence: 99%

Ionotropic Gelation of Chitosan Flat Structures and Potential Applications

et al. 2021

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The capability of some polymers, such as chitosan, to form low cost gels under mild conditions is of great application interest. Ionotropic gelation of chitosan has been used predominantly for the preparation of gel beads for biomedical application. Only in the last few years has the use of this method been extended to the fabrication of chitosan-based flat structures. Herein, after an initial analysis of the major applications of chitosan flat membranes and films and their usual methods of synthesis, the process of ionotropic gelation of chitosan and some recently proposed novel procedures for the synthesis of flat structures are presented.

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Chitosan-derived hybrid porous carbon with the novel tangerine pith-like surface as supercapacitor electrode

Cited by 42 publications

References 65 publications

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Effect of glutaraldehyde/glycerol ratios on the properties of chitosan films

Formation of High Surface Area Hierarchical Porous Carbon Via a Novel Two Step Activation Process for Fast Supercapacitors

Ionotropic Gelation of Chitosan Flat Structures and Potential Applications

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