Research on the degradation performance of the lotus nanofibers-alginate porous materials

Gong, Ying; Han, Guang Ting; Zhang, Yuan Ming; Zhang, Jin Feng; Jiang, Wei; Pan, Ying

doi:10.1016/j.polymdegradstab.2015.04.003

Cited by 25 publications

(6 citation statements)

References 22 publications

(23 reference statements)

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“…Fourier transform infrared spectroscopy suggests the existence of hydroxy or amino groups at ≈3440 cm −1 , aliphatic hydrocarbons at ≈2890 cm −1 , benzene skeleton in lignin at ≈1630 cm −1 , uronic ester bridges in hemicellulose at ≈1160 cm −1 , ether linkages between glucose units at ≈1060 cm −1 , and β‐glycoside bonds in cellulose at ≈890 cm −1 (Figure S3a, Supporting Information). [ 38 ] These abundant reducible groups (such as hydroxy groups) can potentially facilitate chemical modifications and the loading of catalytically active centers, and the elimination of volatile species (e.g., oxygen‐containing groups) at high temperatures upon pyrolysis may contribute to generating a large number of mesopores (Figure S3b, Supporting Information). Specifically, the oxygen‐containing functional groups are conducive to homogeneous anchoring of cations and nanomaterials, and the nanoporous characteristics are important for efficient mass transfer and/or the exposure of anchored active species in the catalyst system (i.e., sustained activity and enhanced stability).…”

Section: Resultsmentioning

confidence: 99%

Highly Stable and Active Flexible Electrocatalysts Derived from Lotus Fibers

Liu

Wang

Guo

et al. 2023

Adv Funct Materials

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The stability and activity of electrocatalysts are fundamental in energy-related applications (e.g., hydrogen generation and energy storage). Electrocatalysts degrade over time when the active centers are not strongly anchored to the support. However, if the active centers are too strongly anchored, the activity of the electrocatalysts decreases due to reduced accessibility to reactants. Herein, a strategy is presented to balance the stability and activity of different active materials using a natural and flexible support material that can be woven and carbonized. Lotus fibers, which have surface hydroxyl and phenolic groups, high mechanical strength, and a mesoscale porosity post-pyrolysis, are used to load diverse functional metal-containing materials such as metal-organic frameworks, 2D materials, metal sulfide nanoparticles, metal ions, and high-entropy alloys. After pyrolysis, the electrocatalysts display flexibility, high catalytic performance, and long-term stability, outperforming commercial benchmarks (e.g., Pt/C) in specific scenarios for water splitting, liquid batteries, and flexible electronics.

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Section: Resultsmentioning

confidence: 99%

Highly Stable and Active Flexible Electrocatalysts Derived from Lotus Fibers

Liu

Wang

Guo

et al. 2023

Adv Funct Materials

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“…Some oxidants can cause further oxidation of aldehyde groups to produce carboxylic acid groups. , As shown in Figure a, for the SA reaction with sodium periodate, the C2–C3 on the sugar unit is broken, and the hydroxyl group at the corresponding position is oxidized to an aldehyde group . The reaction should be protected from light irradiation to prevent side reactions . Ethylene glycol can be added to terminate the oxidation reaction.…”

Section: Functional Modification Of Samentioning

confidence: 99%

“…60 The reaction should be protected from light irradiation to prevent side reactions. 63 Ethylene glycol can be added to terminate the oxidation reaction. At the same time, the degree of SA oxidation can be controlled by adjusting the concentration of sodium periodate.…”

Section: Functional Modification Of Samentioning

confidence: 99%

Recent Development of Alginate-Based Materials and Their Versatile Functions in Biomedicine, Flexible Electronics, and Environmental Uses

Teng

Chen

et al. 2021

ACS Biomater. Sci. Eng.

108

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Alginate is a natural polysaccharide that is easily chemically modified or compounded with other components for various types of functionalities. The alginate derivatives are appealing not only because they are biocompatible so that they can be used in biomedicine or tissue engineering but also because of the prospering bioelectronics that require various biomaterials to interface between human tissues and electronics or to serve as electronic components themselves. The study of alginate-based materials, especially hydrogels, have repeatedly found new frontiers over recent years. In this Review, we document the basic properties of alginate, their chemical modification strategies, and the recent development of alginate-based functional composite materials. The newly thrived functions such as ionically conductive hydrogel or 3D or 4D cell culturing matrix are emphasized among other appealing potential applications. We expect that the documentation of relevant information will stimulate scientific efforts to further develop biocompatible electronics or smart materials and to help the research domain better address the medicine, energy, and environmental challenges faced by human societies.

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“…Garments produced from lotus fibres are becoming more and more popular because they are environment-friendly and comfortable. In addition, lotus fibres have also been widely used as porous and composite materials [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

Extraction of lotus fibres from lotus stems under microwave irradiation

et al. 2017

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An efficient technology for preparing lotus fibres under microwave irradiation was developed. The lotus fibres were characterized by scanning electron microscopy, Fourier transform infrared spectrometry, X-ray diffraction and thermogravimetry. Lotus fibres prepared are a kind of hollow fibres which are composed of a superfine fibre and an external shell. The effect of the treatment time with hydrogen peroxide under microwave irradiation on components, whiteness, moisture regain, removal rate of impurities, fineness, tensile strength and breaking elongation of lotus fibres was investigated. The results show that the cellulose content in lotus fibres increases with increase in treatment time. Whiteness and moisture regain of lotus fibres increase with increase in treatment time with hydrogen peroxide. The removal rate of impurities and the fineness of lotus fibres are improved after they are treated with hydrogen peroxide. Microwave irradiation is supposed to be an efficient method for producing lotus fibres.

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Research on the degradation performance of the lotus nanofibers-alginate porous materials

Cited by 25 publications

References 22 publications

Highly Stable and Active Flexible Electrocatalysts Derived from Lotus Fibers

Highly Stable and Active Flexible Electrocatalysts Derived from Lotus Fibers

Recent Development of Alginate-Based Materials and Their Versatile Functions in Biomedicine, Flexible Electronics, and Environmental Uses

Extraction of lotus fibres from lotus stems under microwave irradiation

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