Enhanced gas adsorption using an effective nanoadsorbent with high surface area based on waste jute as cellulose fiber

In this project, we present a comparative study of the electrochemical performance for tubular MCo2O4 (M = Cr, Mn, Ni) microstructures prepared using cotton fiber as a bio-template. Crystal structure, surface properties, morphology, and electrochemical properties of MCo2O4 are characterized using X-ray diffraction (XRD), gas adsorption, scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FTIR), cyclic voltammetry (CV), and galvanostatic charge-discharge cycling (GCD). The electrochemical performance of the electrode made up of tubular MCo2O4 structures was evaluated in aqueous 3M KOH electrolytes. The as-obtained templated MCo2O4 microstructures inherit the tubular morphology. The large-surface-area of tubular microstructures leads to a noticeable pseudocapacitive property with the excellent electrochemical performance of NiCo2O4 with specific capacitance value exceeding 407.2 F/g at 2 mV/s scan rate. In addition, a Coulombic efficiency ~100%, and excellent cycling stability with 100% capacitance retention for MCo2O4 was noted even after 5000 cycles. These tubular MCo2O4 microstructure display peak power density is exceeding 7000 W/Kg. The superior performance of the tubular MCo2O4 microstructure electrode is attributed to their high surface area, adequate pore volume distribution, and active carbon matrix, which allows effective redox reaction and diffusion of hydrated ions.

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A new mesoporous coordination polymer: synthesis, structure, and gas adsorption studies

CrystEngComm ◽

10.1039/c5ce00015g ◽

2015 ◽

Vol 17 (10) ◽

pp. 2087-2090 ◽

Cited By ~ 8

Author(s):

Jingui Duan ◽

QianQian Li ◽

Zhiyong Lu

Keyword(s):

Binding Energy ◽

Coordination Polymer ◽

Surface Area ◽

Gas Adsorption ◽

High Surface ◽

High Surface Area ◽

Polymer Synthesis ◽

Adsorption Behavior ◽

Adsorption Studies ◽

Coordination Framework

A new porous coordination framework, NJTU-1, with low binding energy and remarkable mesopores, exhibits a high surface area and excellent gas adsorption behavior at 298 K.

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Coloration and Chromatic Sensing Behavior of Electrospun Cellulose Fibers with Curcumin

Nanomaterials ◽

10.3390/nano11010222 ◽

2021 ◽

Vol 11 (1) ◽

pp. 222

Author(s):

Minhee Kim ◽

Hoik Lee ◽

Myungwoong Kim ◽

Yoon Cheol Park

Keyword(s):

Surface Area ◽

Cotton Fiber ◽

High Surface ◽

High Surface Area ◽

Cellulose Fiber ◽

Solvent System ◽

Ethanol Solution ◽

Immersion Method ◽

Natural Colorant ◽

Cellulose Fabrics

The effective approach for coloration and chromatic sensing of electrospun cellulose fabrics with a natural colorant, curcumin, is demonstrated. To achieve high surface area, the morphology of fiber was controlled to have rough and porous surface through an electrospinning of a cellulose acetate (CA) solution under optimized electrospinning parameters and solvent system. The resulting CA fibers were treated with a curcumin dye/NaOH ethanol solution, in which deacetylation of the CA fiber and high-quality coloration with curcumin were simultaneously achieved. As a control, a cotton fiber with similar diameter and smooth surface morphology was treated by the same method, resulting in poor coloration quality. The difference can be attributed to high surface area as well as trapping of dye molecules inside of cellulose fiber during deacetylation. Both fibers were further utilized for a chromatic sensing application for specific toxic gases. The incorporated curcumin dye responded to hydrogen chloride and ammonia gases reversibly via keto-enol tautomerism, and, as a consequence, the color was reversibly changed between reddish-brown and yellow colors. The cellulose fiber fabricated by the electrospinning showed ten times higher and two times quicker responsiveness compared to curcumin-colored cotton fiber sample prepared with the same immersion method.

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Tetraphenylethylene-based Covalent Organic Framework for Waste Gas Adsorption and Highly Selective Detection of Fe3+

CrystEngComm ◽

10.1039/d1ce00870f ◽

2021 ◽

Author(s):

Di Cui ◽

Xuesong Ding ◽

Wei Xie ◽

Guangjuan Xu ◽

Zhong-Min Su ◽

...

Keyword(s):

Schiff Base ◽

Porous Structure ◽

Surface Area ◽

Gas Adsorption ◽

High Surface ◽

High Surface Area ◽

Selective Detection ◽

Waste Gas ◽

Covalent Organic Framework ◽

Organic Framework

Tetraphenylethylene-based covalent organic framework (TTPE-COF) with rhomboid-shaped framework is constructed by Schiff base reaction. Due to its porous structure and high surface area (681.27 m2 g-1), TTPE-COF will be a...

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Nitrogen-doped carbon aerogels with high surface area for supercapacitors and gas adsorption

Materials Today Communications ◽

10.1016/j.mtcomm.2018.03.015 ◽

2018 ◽

Vol 16 ◽

pp. 1-7 ◽

Cited By ~ 14

Author(s):

Fan-Yue Zeng ◽

Zhu-Yin Sui ◽

Shan Liu ◽

Hai-Peng Liang ◽

Han-Hui Zhan ◽

...

Keyword(s):

Surface Area ◽

Gas Adsorption ◽

High Surface ◽

High Surface Area ◽

Carbon Aerogels ◽

Nitrogen Doped ◽

Nitrogen Doped Carbon

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Remarkable gas adsorption by carbonized nitrogen-rich hypercrosslinked porous organic polymers

Journal of Materials Chemistry A ◽

10.1039/c4ta02782e ◽

2014 ◽

Vol 2 (36) ◽

pp. 15139-15145 ◽

Cited By ~ 62

Author(s):

Xiao Yang ◽

Miao Yu ◽

Yang Zhao ◽

Chong Zhang ◽

Xiaoyan Wang ◽

...

Keyword(s):

Carbon Dioxide ◽

Surface Area ◽

Gas Adsorption ◽

High Surface ◽

High Surface Area ◽

Organic Polymer ◽

High Carbon ◽

Porous Organic Polymer ◽

Carbon Dioxide Uptake ◽

High Carbon Dioxide

Carbonized materials from a nitrogen-rich hypercrosslinked porous organic polymer exhibit a high surface area of 2065 m2 g−1 and an exceptionally high carbon dioxide uptake up to 6.51 mmol g−1 (1.13 bar/273 K).

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SAXS Characterization of Carbon Aerogels for Catalytic Supports

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.45.1847 ◽

2006 ◽

Vol 45 ◽

pp. 1847-1856

Author(s):

Françoise Ehrburger-Dolle ◽

Sandrine Berthon-Fabry ◽

Françoise Bley

Keyword(s):

Surface Area ◽

Gas Adsorption ◽

High Surface ◽

High Surface Area ◽

Scale Structure ◽

Carbon Aerogels ◽

Electrochemical Performances ◽

Contrast Variation ◽

Multi Scale ◽

X Ray Scattering

Carbon aerogels are very promising substrates for electrocatalyst deposition involved in fuel cells. Their advantage over high surface area carbon blacks currently used, is the porous monolithic structure yielding large pore volumes with controlled pore sizes. By changing the synthesis parameters, it is possible to adjust their multi-scale structure which is strongly related to the electrochemical performances. The aim of the lecture is to give a survey of information about the multi-scale structure that can be obtained by small and wide angle X-ray scattering (SAXS and WAXS) techniques combined with contrast variation (CV). To this end, a series of SAXS experiments on carbon aerogels are described and the analysis of the experimental data is explained. Particular attention is paid to the determination of the specific surface area, SSAXS, and to the reasons why WAXS curves combined to SAXS ones make this determination more pertinent. The physical meaning of similarity or difference between SSAXS and surface area determined by gas adsorption, SADS, is discussed and information obtained by using contrast variation (CV) is described for two carbon aerogels prepared in different conditions.

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Tenacious Mass Transfer Limitations Drive Catalytic Selectivity during Electrochemical Carbon Dioxide Reduction

10.26434/chemrxiv.7770338.v1 ◽

2019 ◽

Cited By ~ 1

Author(s):

Kailun Yang ◽

Recep Kas ◽

Wilson A. Smith

Keyword(s):

Surface Area ◽

High Surface ◽

High Surface Area ◽

Catalyst Layer ◽

Active Surface ◽

Active Surface Area ◽

High Concentration ◽

Copper Electrodes ◽

Surface Enhanced ◽

Local Current

This study evaluated the performance of the commonly used strong buffer electrolytes, i.e. phosphate buffers, during CO2 electroreduction in neutral pH conditions by using in-situ surface enhanced infrared absorption spectroscopy (SEIRAS). Unfortunately, the buffers break down a lot faster than anticipated which has serious implications on many studies in the literature such as selectivity and kinetic analysis of the electrocatalysts. Increasing electrolyte concentration, surprisingly, did not extend the potential window of the phosphate buffers due to dramatic increase in hydrogen evolution reaction. Even high concentration phosphate buffers (1 M) break down within the potentials (-1 V vs RHE) where hydrocarbons are formed on copper electrodes. We have extended the discussion to high surface area electrodes by evaluating electrodes composed of copper nanowires. We would like highlight that it is not possible to cope with high local current densities on these high surface area electrodes by using high buffer capacity solutions and the CO2 electrocatalysts are needed to be evaluated by casting thin nanoparticle films onto inert substrates as commonly employed in fuel cell reactions and up to now scarcely employed in CO2 electroreduction. In addition, we underscore that normalization of the electrocatalytic activity to the electrochemical active surface area is not the ultimate solution due to concentration gradient along the catalyst layer.This will “underestimate” the activity of high surface electrocatalyst and the degree of underestimation will depend on the thickness, porosity and morphology of the catalyst layer.

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Rugae-like FeP nanocrystal assembly on a carbon cloth: an exceptionally efficient and stable cathode for hydrogen evolution

Nanoscale ◽

10.1039/c5nr02375k ◽

2015 ◽

Vol 7 (25) ◽

pp. 10974-10981 ◽

Cited By ~ 95

Author(s):

Xiulin Yang ◽

Ang-Yu Lu ◽

Yihan Zhu ◽

Shixiong Min ◽

Mohamed Nejib Hedhili ◽

...

Keyword(s):

Gas Phase ◽

Surface Area ◽

Hydrogen Evolution ◽

Hydrogen Generation ◽

High Surface ◽

High Surface Area ◽

Catalytic Efficiency ◽

Carbon Cloth ◽

Nanocrystal Assembly

High surface area FeP nanosheets on a carbon cloth were prepared by gas phase phosphidation of electroplated FeOOH, which exhibit exceptionally high catalytic efficiency and stability for hydrogen generation.

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