Three-dimensional honeycomb-like porous carbon derived from corncob for the removal of heavy metals from water by capacitive deionization

Zhang, X. F.; Wang, B.; Yu, Jingkun; Wu, Xiaoshan; Zang, Yanan; Gao, Hongcheng; Su, Pei; Hao, Shilai

doi:10.1039/c7ra10689k

Cited by 52 publications

(12 citation statements)

References 66 publications

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“…At 5 h carbonization, the well-defined pore structure is evident, which can be quite beneficial for the electrolyte ions to move to the carbon electrode (in the supercapacitor setup), achieving a high specific capacitance and excellent performance. 64 XPS Analysis. The XPS spectra of the raw glycogen are presented in Figure S2, with the associated deconvoluted peaks for carbon, oxygen, and nitrogen.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The layer-like morphology is evident in all presented samples, as is quite visible in glycogen-based carbon (4 h, 1000 °C). At 5 h carbonization, the well-defined pore structure is evident, which can be quite beneficial for the electrolyte ions to move to the carbon electrode (in the supercapacitor setup), achieving a high specific capacitance and excellent performance …”

Section: Resultsmentioning

confidence: 99%

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Renewable Carbon Materials as Electrodes for High-Performance Supercapacitors: From Marine Biowaste to High Specific Surface Area Porous Biocarbons

et al. 2023

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Waste, in particular, biowaste, can be a valuable source of novel carbon materials. Renewable carbon materials, such as biomass-derived carbons, have gained significant attention recently as potential electrode materials for various electrochemical devices, including batteries and supercapacitors. The importance of renewable carbon materials as electrodes can be attributed to their sustainability, low cost, high purity, high surface area, and tailored properties. Fish waste recovered from the fish processing industry can be used for energy applications and prioritizing the circular economy principles. Herein, a method is proposed to prepare a high surface area biocarbon from glycogen extracted from mussel cooking wastewater. The biocarbon materials were characterized using a Brunauer–Emmett–Teller surface area analyzer to determine the specific surface area and pore size and by scanning electron microscopy coupled with energy-dispersive X-ray analysis, Raman analysis, attenuated total reflectance Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy. The electrochemical characterization was performed using a three-electrode system, utilizing a choline chloride-based deep eutectic solvent (DES) as an eco-friendly and sustainable electrolyte. Optimal time and temperature allowed the preparation of glycogen-based carbon materials, with a specific surface area of 1526 m2 g–1, a pore volume of 0.38 cm3 g–1, and an associated specific capacitance of 657 F g–1 at a current density of 1 A g–1, at 30 °C. The optimal material was scaled up to a two-electrode supercapacitor using a DES-based solid-state electrolyte (SSE@DES). This prototype delivered a maximum capacitance of 703 F g–1 at a 1 A g–1 of current density, showing 75% capacitance retention over 1000 cycles, delivering the highest energy density of 0.335 W h kg–1 and power density of 1341 W kg–1. Marine waste can be a sustainable source for producing nanoporous carbon materials to be incorporated as electrode materials in energy storage devices.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Renewable Carbon Materials as Electrodes for High-Performance Supercapacitors: From Marine Biowaste to High Specific Surface Area Porous Biocarbons

et al. 2023

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“…The unique structure and abundant functional groups can impart the product with high oxygen content. 19,32,35,53 XPS analysis was carried out to further investigate the chemical composition and functional groups of the CHPCs. The XPS survey spectra display two obvious peaks at 284.6 and 533.0 eV, assigned to C 1s and O 1s (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…Currently, biomass has become the most promising carbon source due to its natural abundance, unique structure, renewability and low cost. 14 Numerous biomass materials, such as rice straw, 15 sorghum stalk, 16 hemp stem, 17 bamboo, 18 corn cob, [19][20][21][22] corn husk, 23,24 corn silk, 25,26 corn leaf, 27 corn grains 28 and soybean, 29 have been utilized as carbon precursors to prepare carbon materials for supercapacitors. Especially, cornstalk with an inherent interconnected structure has undoubtedly been an ideal carbon source for HPCs in recent years.…”

Section: Introductionmentioning

confidence: 99%

Simple and scalable synthesis of hierarchical porous carbon derived from cornstalk without pith for high capacitance and energy density

Jiang

Wei

et al. 2020

J. Mater. Chem. A

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“…-ray diffraction spectroscopy: Figure3represents t. Two were observed which could be attributed to the presence of carbon and graphite(Bouchelta, Medjram et al 2008). Moreover, the broad diffraction indicates the amorphous nature and low graphitization(Fan, Yang et al 2014, Chen, Peng et al 2015, Zhang, Wang et al 2018). …”

mentioning

confidence: 98%

Preparation and Characterization of Activated Carbon from Bagasse and Jute Fibre for Heavy Metal Adsorption

Hossain

Rony

Sultana

et al. 2019

IJSMS

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Over the past few years, activated carbon (AC) has attained significant attention as an efficient adsorbent for heavy metal (lead, cadmium, chromium etc.) removal. In Bangladesh, bagasse and jute fibre are the two most potential raw materials for producing activated carbon due to their high availability and low cost. The activated carbon was produced by thermal treatment method. The produced AC were characterized using FTIR, XRD, SEM etc. Batch experiments under agitation was also carried out for adsorption of heavy metals and then characterized using AAS (Atomic Adsorption Spectroscopy). Adsorption with commercially available activated carbon was also done to use as standard. Among all ACs produced in this study, the highest percentage removal of heavy metals which were Cr3+ and Cd2+ was at 57.06% and 43.01% respectively for J-400 ( AC produced from jute fibre at 4000C). This obtained value was 16.6% and 12.9% higher in comparison to Commercially available Activated carbon for Cr3+ and Cd2+ respectively.

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Three-dimensional honeycomb-like porous carbon derived from corncob for the removal of heavy metals from water by capacitive deionization

Abstract: A porous carbon electrode with a 3D honeycomb-like structure demonstrates a high removal efficiency for the removal of chromium(vi) from water.

Cited by 52 publications

References 66 publications

Renewable Carbon Materials as Electrodes for High-Performance Supercapacitors: From Marine Biowaste to High Specific Surface Area Porous Biocarbons

Renewable Carbon Materials as Electrodes for High-Performance Supercapacitors: From Marine Biowaste to High Specific Surface Area Porous Biocarbons

Simple and scalable synthesis of hierarchical porous carbon derived from cornstalk without pith for high capacitance and energy density

Preparation and Characterization of Activated Carbon from Bagasse and Jute Fibre for Heavy Metal Adsorption

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