Nanostructured CoP: An efficient catalyst for degradation of organic pollutants by activating peroxymonosulfate

Luo, Rui; Liu, Chao; Li, Jiansheng; Wang, Jing; Hu, Xingru; Sun, Xiuyun; Shen, Jinyou; Han, Weiqing; Wang, Lianjun

doi:10.1016/j.jhazmat.2017.01.032

Cited by 163 publications

(25 citation statements)

References 61 publications

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“…However, characteristic signals with an intensity ratio of 1:2:2:1 ascribed to the DMPO– • OH were observed in Fe/Ti‐MOF‐NH 2 (3:1)/Vis process, suggesting the generation of • OH. By contrast, the signal intensity of • OH radicals was significantly enhanced for Fe/Ti‐MOF‐NH 2 (3:1)/PS/Vis process, and the peaks of DMPO‐SO 4 •− were observed around the peaks of • OH . This phenomenon reconfirms the presence of • OH and SO 4 •− radicals in the PS‐assisted visible light photocatalytic system, further improving photocatalytic activity of Fe/Ti‐MOF‐NH 2 composite.…”

Section: Resultssupporting

confidence: 54%

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

et al. 2018

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Amine‐functionalized bimetallic Fe/Ti‐based metal–organic frameworks (Fe/Ti‐MOF‐NH2) were synthesized via the solvothermal method and used as photocatalysts and activators for persulfate (PS)‐assisted visible light photocatalytic degradation of Orange II. Nearly 100% of Orange II was removed within 10 min in the Fe/Ti‐MOF‐NH2(3:1)/PS/Vis process, while only 10.7% and 70.9% of Orange II were removed in Fe/Ti‐MOF‐NH2(3:1)/Vis and Fe/Ti‐MOF‐NH2(3:1)/PS processes within 10 min, respectively. Therefore, the synergistic effect of PS activation and visible light photocatalysis was demonstrated by the Fe/Ti‐MOF‐NH2(3:1) composite. The enhanced photocatalytic activity of the photocatalyst can be attributed to the efficient electrons transfer by Fe3+/Fe2+ and Ti4+/Ti3+ redox cycles, activation of PS by photogenerated electrons to produce sulfate radicals (SO4•−), and increased formation of hydroxyl radicals (•OH). Concurrently, the Fe/Ti‐MOF‐NH2(3:1) photocatalyst also exhibited good reusability and stability in the photocatalytic reaction system.

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Section: Resultssupporting

confidence: 54%

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

et al. 2018

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“…Total organic carbon (TOC) of BPA was also tested and result was shown in Figure 4. About 65% of BPA was degraded to CO 2 and H 2 O after 240 min, this result was caused by some degradation intermediates that were hard to be degraded, which was close to the previous report [37,41]. The particle stability was tested by dropping FCPBA into reaction solution for 4 h. XRD result showed that the structure of FCPBA still maintained well after catalyzation (Figure S2c).…”

Section: Resultssupporting

confidence: 88%

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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“…As shown in Figure 6b, there are two different free radicals species present in the system. Further investigation reveals that the intensity ratio of the characteristic peak is 1:2:2:1 (αH = αN = 14.8 G), corresponding to the signals of OH • , while the signals of SO • − 4 exist around the peaks of OH • (αN = 13.2 G, αH = 9.6 G, αH = 1.48 G, αN = 0.78 G) [39,40]. These results were consistent with the results of free radical quenching experiments in Figure 6a.…”

Section: Identification Of Reactive Species and Activation Mechanismsmentioning

confidence: 99%

Co-Zeolitic Imidazolate Framework@Cellulose Aerogels from Sugarcane Bagasse for Activating Peroxymonosulfate to Degrade P-Nitrophenol

et al. 2021

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An efficient, green and reusable catalyst for organic pollutant wastewater treatment has been a subject of intense research in recent decades due to the limitation of current technologies. Cellulose based aerogel composites are considered to be an especially promising candidate for next-generation catalytic material. This project was conducted in order to evaluate the behavior and ability of green and reusable sugarcane bagasse aerogels to remove P-Nitrophesnol from waste-water aqueous. Co-Zeolitic imidazolate framework@ sugarcane bagasse aerogels composite catalysts were successfully prepared via simple in situ synthesis. The structure of hybrid aerogels and their efficient catalyst in peroxymonosulfate (PMS) activation for the degradation of p-nitrophenol (PNP) was investigated. As a result, the hybrid aerogels/PMS system removed 98.5% of PNP (10mg/L) within 60~70 min, while the traditional water treatment technology could not achieve this. In addition, through a free radical capture experiment and electron paramagnetic resonance (EPR), the degradation mechanism of PNP was investigated. Further research found that the hybrid aerogels can effectively activate PMS to produce sulfate (SO4• -) and hydroxyl (OH• ). Both of them contributed to the degradation of PNP, and SO4• - plays a crucial role in the degradative process. The most important feature of hybrid aerogels can be easily separated from the solution. The obtained results showed that the outer coating structure of cellulose can stabilize Co-ZIF and reduce the dissolution of cobalt ions under complex reaction conditions. Moreover, the prepared hybrid aerogels exhibit excellent reusability and are environmentally friendly with efficient catalytic efficiency. This work provides a new strategy for bagasse applications and material reusability.

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Nanostructured CoP: An efficient catalyst for degradation of organic pollutants by activating peroxymonosulfate

Cited by 163 publications

References 61 publications

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

Bimetallic Fe/Ti‐Based Metal–Organic Framework for Persulfate‐Assisted Visible Light Photocatalytic Degradation of Orange II

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

Co-Zeolitic Imidazolate Framework@Cellulose Aerogels from Sugarcane Bagasse for Activating Peroxymonosulfate to Degrade P-Nitrophenol

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