Cellulose derived carbon nanofiber: A promising biochar support to enhance the catalytic performance of CoFe2O4 in activating peroxymonosulfate for recycled dimethyl phthalate degradation

Gan, Lu; Zhong, Qiang; Geng, Aobo; Wang, Linjie; Song, Changhui; Han, Shuguang; Cui, Juqing; Xu, Lijie

doi:10.1016/j.scitotenv.2019.133705

Cited by 125 publications

(19 citation statements)

References 42 publications

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“…Electrospinning technique is the effective, common, versatile, and relatively simple method to manufacture polymer nanofibers 40‐42 . Although lignin, 43‐45 cellulose, 46,47 polybenzimidazole, 48,49 and polyimide (PI) 48,50‐52 can be used as raw material, polyacrylonitrile (PAN) 5,17,33,36,37,53‐55 is the most common polymer precursor in CNF production due to easy electrospinnability and high carbon yield. CNF material is obtained after stabilization of PAN nanofibers in the oxygen atmosphere at moderate temperatures (~200°C‐300°C) and carbonization in the inert atmosphere (nitrogen, argon, etc) at high temperatures (~ 900°C‐1500°C) 56 …”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Altın

Bedeloğlu

2021

Int J Energy Res

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Summary Porous carbon nanofibers (PCNFs) were produced from polyacrylonitrile (PAN)/polyvinyl alcohol (PVA) hybrid nanofibers with different mixing ratios and used as the free‐standing, flexible, high performance electrodes for the supercapacitors. The effect of PAN/PVA ratio, PVA removing and stabilization/carbonization process on the chemical structure, and the morphology of PAN/PVA hybrid nanofibers and PCNF were investigated by Fourier transform infrared (FT‐IR), field emission scanning electron microscopy (FE‐SEM), and thermogravimetric analyzer (TGA). It was proved by FT‐IR and FE‐SEM analyses that PAN/PVA hybrid nanofibers are successfully produced and carbonized. In addition, the electrochemical performance of PCNF electrodes was analyzed by cyclic voltammetry (CV), galvanostatic charge/discharge (GCD), and electrochemical impedance spectroscopy (EIS) methods. Results showed that PCNFs exhibit higher specific capacitance and better electrochemical performance than neat carbon nanofibers (N‐CNF). The specific capacitance of the EK5 PCNF (67/33 PAN/PVA wt ratio) was 157 F/g at 5 mV/s scan rate in 1 M H2SO4, while the specific capacitance of N‐CNF was 96 F/g at the same conditions. Moreover, the PCNF showed excellent cyclic stability without losing performance through 2500 charge/discharge cycles at a current density of 2 A/g. As a result, free‐standing, flexible, and high‐performance PCNFs are excellent candidates as supercapacitor electrodes for flexible energy‐storage devices.

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Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Altın

Bedeloğlu

2021

Int J Energy Res

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“…Gan et al [181] induced the degradation of refractive organic pollutants, such as dimethyl phthalate, by using a metal framework based on CoFe 2 O 4 for the activation of peroxymonosulfate.…”

Section: Organic Pollutants Removalmentioning

confidence: 99%

A Review of Non-Soil Biochar Applications

et al. 2020

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Biochar is the solid residue that is recovered after the thermal cracking of biomasses in an oxygen-free atmosphere. Biochar has been used for many years as a soil amendment and in general soil applications. Nonetheless, biochar is far more than a mere soil amendment. In this review, we report all the non-soil applications of biochar including environmental remediation, energy storage, composites, and catalyst production. We provide a general overview of the recent uses of biochar in material science, thus presenting this cheap and waste-derived material as a high value-added and carbonaceous source.

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“…Degradation mechanism and intermediate products of DBP were proposed in another study, which concluded that DBP is predominantly decomposed by an aliphatic chain instead of an aromatic ring [30]. Degradation of DMP mainly occurred in two ways, including hydroxylation of a benzene ring and ester groups attacked by radicals to form carboxylic acid compounds [17,36].…”

Section: Paes Degradationmentioning

confidence: 99%

Effects of Persulfate Activation with Pyrite and Zero-Valent Iron for Phthalate Acid Ester Degradation

Imran

Tong

et al. 2020

Water

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Phthalic acid esters (PAEs) are often detected in remediated groundwater using appropriate oxidant materials by in situ groundwater treatment. The study compares zero-valent iron–persulfate with a pyrite–persulfate system to degrade three PAEs—di(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), and dimethyl phthalate (DMP). Column experiments were conducted, and rapid oxidation occurred in a pyrite–persulfate system due to sulfate radical generation. DMP concentration was found at about 60.0% and 53.0% with zero-valent iron (ZVI) and pyrite activation of persulfate, respectively. DBP concentration was measured as 25.0–17.2% and 23.2–16.0% using ZVI–persulfate and pyrite–persulfate systems, respectively. However, DEHP was not detected. The total organic carbon concentration lagged behind the Ʃ3 PAEs. Persulfate consumption with ZVI activation was half of the consumption with pyrite activation. Both systems showed a steady release of iron ions. Overall, the oxidation–reduction potential was higher with pyrite activation. The surface morphologies of ZVI and pyrite were investigated using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and XPS. Intensive corrosion occurs on the pyrite surface, whereas the ZVI surface is covered by a netting of iron oxides. The pyrite surface showed more oxidation and less passivation in comparison with ZVI, which results in more availability of Fe 2 + for persulfate activation. The pyrite–persulfate system is relatively preferred for rapid PAE degradation for contamination.

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Cellulose derived carbon nanofiber: A promising biochar support to enhance the catalytic performance of CoFe2O4 in activating peroxymonosulfate for recycled dimethyl phthalate degradation

Cited by 125 publications

References 42 publications

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

Polyacrylonitrile/polyvinyl alcohol‐based porous carbon nanofiber electrodes for supercapacitor applications

A Review of Non-Soil Biochar Applications

Effects of Persulfate Activation with Pyrite and Zero-Valent Iron for Phthalate Acid Ester Degradation

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