Efficient activation of peroxymonosulfate by magnetic Mn-MGO for degradation of bisphenol A

Du, Jiangkun; Bao, Jianguo; Liu, Ying; Ling, Haibo; Zheng, Han; Kim, Sang Hoon; Dionysiou, Dionysios D.

doi:10.1016/j.jhazmat.2016.08.021

Cited by 265 publications

(62 citation statements)

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“…Environmental pollution has always been a major fatal problem that plagues mankind, among which water pollution is the most prominent problem. In a modern society with rapid industrial development, the discharge of wastewater caused by industrial production has become more and more serious, which has caused different levels of pollution in rivers and lakes [1,2]. Heavy metal ions and dyes in wastewater can enter the human body under the action of biological circulation and eventually pose a potential threat to human health.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Functionalized Biomass Carbon-Based Adsorbent for Simultaneous Removal of Pb2+ and MB in Wastewater

2021

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It is of great significance to realize the sustainable development of the environment to synthesize functional materials by value-added utilization of waste resources. Herein, a composite material of polyacrylic acid/lignosulfonate sodium/cotton biochar (PAA/LS/BC) was successfully prepared by grafting polyacrylic acid with functionalized waste cotton biochar and lignosulfonate sodium. The obtained absorbent showed prominent capture ability toward Pb2+ and methylene blue (MB) with capture characteristics of the pseudo-second-order model and Langmuir isotherm model. This experiment explored the adsorption performance of the adsorbent for pollutants at different conditions, and further revealed the selective adsorption of Pb2+ and MB in the mixed system. Analysis confirmed that electrostatic attraction and complexation are the most critical methods to remove contaminants. Additionally, the regeneration and stability experiment showed that the adsorption capacity of PAA/LS/BC for pollutants did not significantly decrease after five runs of adsorption–desorption. Various results can demonstrate that the adsorbent has excellent performance for removing pollutants and can be used as a material with development potential in the field of adsorption.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Functionalized Biomass Carbon-Based Adsorbent for Simultaneous Removal of Pb2+ and MB in Wastewater

2021

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“…/MoO 2 (0.65 V) (Du et al, 2018a), it could be speculated that Mo(IV) on the surface of MoO 2 was oxidized by Fe(III) to Mo(V) and Mo(VI) (Equation 7). Fe(III) was converted to Fe(II) simultaneously (Equation 8), which was supported by Figure S3.…”

Section: àmentioning

confidence: 99%

“…Recently, sulfate radical (SO 4 ,À )-based AOPs have drawn much interests Yun et al, 2018;Chen et al, 2018) due to their higher oxidation potentials (SO 4 ,À , 2.5-3.1 eV) compared with hydroxyl radical ( , OH, 2.8 eV), longer half-life, higher selectivity (Li et al, 2018;Huang et al, 2017;Hu et al, 2017), and tolerance to wider pH range (2-8) (Ghanbari and Moradi, 2017). Peroxymonosulfate (PMS) molecules are widely used as a source for sulfate radicals in AOPs, which can be activated during the treatment process through various methods such as heating (Chen et al, 2016), UV light (Guan et al, 2011), transition metal ions, and ultrasound (Liu et al, 2017;Du et al, 2018a). Dionysiou et al found that PMS can be activated by various transition metals, among which Co(II) and Ru(III) demonstrated the best performances as catalysts for generating sulfate radicals Dionysiou, 2003, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…For example, iron tetracarboxyphthalocyanine molecules were synthesized as a homogeneous catalyst to activate PMS, which outperformed the performance of Co(II) (Dai et al, 2017). Also, a p-Mn/Fe 3 O 4 catalyst with high porosity showed excellent regeneration ability just by simply washing with deionized water (Du et al, 2018a). Assisted UV irradiation has shown also to greatly improve the regeneration of Fe(II) (Khan et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Metallic Active Sites on MoO2(110) Surface to Catalyze Advanced Oxidation Processes for Efficient Pollutant Removal

et al. 2020

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Advanced oxidation processes (AOPs) based on sulfate radicals (SO 4 ,À) suffer from low conversion rate of Fe(III) to Fe(II) and produce a large amount of iron sludge as waste. Herein, we show that by using MoO 2 as a cocatalyst, the rate of Fe(III)/Fe(II) cycling in PMS system accelerated significantly, with a reaction rate constant 50 times that of PMS/Fe(II) system. Our results showed outstanding removal efficiency (96%) of L-RhB in 10 min with extremely low concentration of Fe(II) (0.036 mM), outperforming most reported SO 4 ,À-based AOPs systems. Surface chemical analysis combined with density functional theory (DFT) calculation demonstrated that both Fe(III)/Fe(II) cycling and PMS activation occurred on the (110) crystal plane of MoO 2 , whereas the exposed active sites of Mo(IV) on MoO 2 surface were responsible for accelerating PMS activation. Considering its performance, and non-toxicity, using MoO 2 as a cocatalyst is a promising technique for large-scale practical environmental remediation.

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“…Among them, SO 4 • − based AOPs have undergone extensive study due to the high oxidation potential (2.5–3.1 V), wide suitable pH range (2–9), great resistance toward acid and base, and relative long life time (30–40 μs) [3,17,18]. Up until now, various transition metal ions and transition metal oxides were exploited for PMS activation [19,20,21,22]. However, these catalysts usually face the problem of high cobalt leaching and bring secondary pollution.…”

Section: Introductionmentioning

confidence: 99%

Spiderweb-Like Fe-Co Prussian Blue Analogue Nanofibers as Efficient Catalyst for Bisphenol-A Degradation by Activating Peroxymonosulfate

Wang

et al. 2019

Nanomaterials

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Prussian blue and its analogues (PBA) based nanomaterials have been widely applied to removing pollutants in the recent years. However, easy aggregation and poor recycling largely limit their practical applications. In this work, spiderweb-like Fe-Co Prussian blue analogue/polyacrylonitrile (FCPBA/PAN) nanofibers were prepared by electrospinning and applied to degrading bisphenol-A (BPA) by activating peroxymonosulfate (PMS). Detailed characterization demonstrated that a high loading of FCPBA (86% of FCPBA in FCPBA/PAN) was successfully fixed on the PAN nanofibers. 67% of BPA was removed within 240 min when 500 mg·L−1 PMS and 233 mg·L−1 FCPBA/PAN were introduced in 20 mg·L−1 BPA solution at initial pH of 2.8. Electron paramagnetic resonance (EPR) and radical inhibition experiments were performed to identify the possible degradation mechanism. For comparison, a low loading of FCPBA nanofibers (0.6FCPBA/PAN nanofibers, 43% of FCPBA in FCPBA/PAN) were also prepared and tested the catalytic performance. The results showed that the activity of FCPBA/PAN was much higher than 0.6FCPBA/PAN. Furthermore, a FCPBA/PAN packed column was made as a reactor to demonstrate the reusability and stability of FCPBA/PAN nanofibers, which also exhibited the bright future for the industrial application. This work makes it possible to fabricate efficient PBA nanocatalysts with excellent recyclability and promotes the application of PBA in industrial areas.

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Efficient activation of peroxymonosulfate by magnetic Mn-MGO for degradation of bisphenol A

Cited by 265 publications

References 50 publications

RETRACTED: Functionalized Biomass Carbon-Based Adsorbent for Simultaneous Removal of Pb2+ and MB in Wastewater

RETRACTED: Functionalized Biomass Carbon-Based Adsorbent for Simultaneous Removal of Pb2+ and MB in Wastewater

Metallic Active Sites on MoO2(110) Surface to Catalyze Advanced Oxidation Processes for Efficient Pollutant Removal

Spiderweb-Like Fe-Co Prussian Blue Analogue Nanofibers as Efficient Catalyst for Bisphenol-A Degradation by Activating Peroxymonosulfate

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