A single step process to synthesize ordered porous carbon from coconut shells-eggshells biowaste

Panchal, Manoj; Raghavendra, G.; Ojha, Shakuntala; Omprakash, Muthusamy; Acharya, S. K.

doi:10.1088/2053-1591/ab4cb3

Cited by 8 publications

(10 citation statements)

References 44 publications

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“…There is a hierarchical structure of the porous carbon with transparent layers between carbon frameworks (Figure 2a,b), indicating that it can provide a large surface area for active sites. 46 As depicted in Figure 2c, NiO nanoparticles are anchored on the porous carbon frameworks. The color of carbon layers tends to dark (Figure 2d), which differs from that in Figure 2b.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Hummel

et al. 2021

ACS Sustainable Chem. Eng.

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Here, we reported a strategy of using an eggshell membrane to produce hierarchically porous carbon as a low-cost substrate for synthesizing nano nickel oxide catalyst (C@NiO), which can effectively turn biowaste -urea into energy through an electrochemical approach. The interwoven carbon networks within NiO led to highly efficient urea oxidation due to the strong synergistic effect. The as-prepared electrode only needed 1.36 V versus reversible hydrogen electrode to realize high efficiency of 10 mA cm -2 in 1.0 M KOH with 0.33 M urea and delivered an even higher current density of 25 mA cm -2 at 1.46 V, which is smaller than that of the porous carbon and commercial Pt/C catalyst. Benefiting from theoretical calculations, Ni(III) active species and the porous carbon further enabled the electrocatalyst to effectively inhibit the "CO2 poisoning" of electrocatalysts, as well as ensuring its superior performance for urea oxidation.

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Section: ■ Results and Discussionmentioning

confidence: 97%

Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Hummel

et al. 2021

ACS Sustainable Chem. Eng.

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“…Another important observation one can appreciate is that the activated carbon has large surface area confirmed from BET analysis, [ 37 ] which results in significant number of sites for interfacial adhesion. Moreover, the presence of the amine functional group was observed in the FTIR analysis of activated carbon, [ 37 ] improves the interfacial bonding between activated carbon and epoxy polymer. Figure 6B shows the variation of erosion wear rate with velocity.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…Activated carbon materials with large surface area have high adsorption capacity, [34] therefore when activated carbon composite materials exposed to water the adsorption of moisture might have taken place. [37] Figure 4B shows the percentage of moisture absorption of 1, 2, 3 wt.% activated carbon filler composites when exposed to saline water. From Figure 4, it can be noticed that all the activated carbon composite materials exhibited similar type of absorption behavior.…”

Section: Erosion Wear and Hardness Testmentioning

confidence: 99%

“…[33] Above two feature are distinctive feature of activated carbon. [33][34][35][36][37] Further, analysis of pore size and pore structure of synthesized carbon material was discussed in details by Panchal et al, [37] The authors found that pores on activated carbons were of different size ranging from 2 to 50 nm, the variation in pores size suggest that it is the hierarchical porous activated carbon. [37] The result of the EDX analysis is shown in Figure 1B.…”

Section: Hierarchical Porous Activated Carbon Preparationmentioning

confidence: 99%

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Study of environmental behavior and its effect on solid particle erosion behavior of hierarchical porous activated carbon‐epoxy composite

Panchal¹,

Minugu

Gujjala

et al. 2022

Polymer Composites

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Porous carbon materials have versatile physical and chemical characteristics; however, these materials are not be fully exploited as reinforcements in polymer composites. The present investigation focuses on extraction of hierarchical porous carbon and its utilization in polymer composite in order to enhance the erosion wear resistance and hardness of polymer composite. The current research work also demonstrates the wear behavior of the hierarchical porous carbon epoxy composite when exposed to different environmental conditions. The attributes of hierarchical carbon have verified through different characterization techniques, further porous carbon with optimum properties has been included as reinforcement in different ratios viz. 1, 2 and 3 wt. % to make the epoxy composites. The composites were studied for their hardness, moisture absorption and erosion wear behavior at variable impingement angles (30°, 45°, 60°, and 90°) and impingement velocities (101, 119, and 148 m/s). Moisture uptake results suggests that the increase in filler percentage increased the moisture absorption, and the highest moisture absorption was reported in composite immersed in saline water environment. It was observed that addition of activated carbon particles has enhanced hardness and wear resistance of the composite. Composite with 2 wt.% particulate reinforcement was found to be the optimum percentage of reinforcement which was subjected to 82.4% less material loss that is, erosion rate at 45° impact angle compared to neat polymer. From the erosion wear results it was further noticed that moisture absorption has deteriorated the erosion wear resistance of composites resulting in high material loss.

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Production of activated carbon from exhausted coffee grounds chemically modified with natural eucalyptus ash lye and its use in the fluoride adsorption process

Bergamini,

de Oliveira,

Scalize

2023

Environ Sci Pollut Res

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A single step process to synthesize ordered porous carbon from coconut shells-eggshells biowaste

Cited by 8 publications

References 44 publications

Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Highly Efficient Urea Oxidation via Nesting Nano-Nickel Oxide in Eggshell Membrane-Derived Carbon

Study of environmental behavior and its effect on solid particle erosion behavior of hierarchical porous activated carbon‐epoxy composite

Production of activated carbon from exhausted coffee grounds chemically modified with natural eucalyptus ash lye and its use in the fluoride adsorption process

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