Heterogeneous activation of persulfate by NiFe2−xCoxO4-RGO for oxidative degradation of bisphenol A in water

Xu, Xiangyang; Qin, Jingyu; Wei, Ying; Ye, Shaochen; Shen, Jing; Yao, Yan; Ding, Bo; Shu, Yirui; He, Guangyu; Chen, Haiqun

doi:10.1016/j.cej.2019.02.019

Cited by 65 publications

(10 citation statements)

References 78 publications

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“…11,33 Peaks ranging from 1000 to 1300 cm −1 are attributed to C−O−C stretching vibrations in the epoxy and ether groups. 6,34,35 The epoxy groups are reported to be thermally unstable and eliminated during hydrothermal treatment, 32 in which a similar tendency was found in this work as shown in Figure 3b. Ether groups are reported to be hydrothermally stable and therefore assumed to have contributed to the incomplete reduction to graphene.…”

Section: ■ Results and Discussionsupporting

confidence: 86%

“…The FT-IR spectra of virgin GO, hydrothermally treated GO, and the as-synthesized composite are shown in Figure 3. The virgin GO (Figure 3a) shows a characteristic absorption peak at 1714 cm −1 attributed to the CO stretching vibrations of the COOH group existing on the edges of GO 6 and 1574 cm −1 attributed to the stretching vibrations of the conjugated carbon backbone (−CC−C C−). 11,33 Peaks ranging from 1000 to 1300 cm −1 are attributed to C−O−C stretching vibrations in the epoxy and ether groups.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Organic Solvent-Free Process for the Rapid Fabrication of Nickel Ferrite-Reduced Graphene Oxide as a Magnetic Nanosorbent Using Supercritical Water

Sawai

Zhou

Yoko

et al. 2021

Ind. Eng. Chem. Res.

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In this study, an organic solvent-free process for the rapid fabrication of nickel ferrite anchored on reduced graphene oxide (rGONF) was developed using supercritical water. The rGONF was synthesized from metal nitrates, graphene oxide (GO), and water using a lab-scale batch reactor at 673 K and 30 MPa. The organic solvent was eliminated from the entire process to prevent chemicals from remaining in the as-synthesized magnetic nanosorbents for the sake of future use. Characterization by X-ray powder diffraction, transmission electron microscopy with energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy has clearly shown the in situ formation of uniform and highly crystalline nickel ferrite nanoparticles on the surface of rGO. Magnetic properties of the as-synthesized rGONF determined using a magnetic property measurement system have shown desirable magnetic features to serve as an adsorbent in practical water-treatment applications. Furthermore, characterization results have implied the completion of the synthetic process within 15 min, extremely faster than the conventional methods. The effects of reaction conditions such as the temperature, reaction time, GO loading, and Ni/Fe molar ratio on anchored NiFe2O4 nanoparticles are also reported herein. The results have suggested that nucleation with a low Ni/Fe molar ratio followed by Ni ion uptake will result in particle growth and crystallization of NiFe2O4 at GO surfaces.

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Section: ■ Results and Discussionsupporting

confidence: 86%

Section: ■ Results and Discussionmentioning

confidence: 99%

Organic Solvent-Free Process for the Rapid Fabrication of Nickel Ferrite-Reduced Graphene Oxide as a Magnetic Nanosorbent Using Supercritical Water

Sawai

Zhou

Yoko

et al. 2021

Ind. Eng. Chem. Res.

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show abstract

“…Environmental hormone bisphenol-A (2,2-bis(4-hydroxyphenyl) propane, BPA) has varying different adverse effects toward organisms, such as fish [1], rats [2], and human health [3]. A number of countries and regions, including China [4], San Francisco [5], Canada, and the European Union [6], have issued policies banning BPA in products in response to the adverse effects of BPA.…”

Section: Introductionmentioning

confidence: 99%

Occurrence, Distribution and Ecological Risk of Bisphenol Analogues in the Surface Water from a Water Diversion Project in Nanjing, China

Zheng

Liu

Ren

et al. 2019

IJERPH

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Due to the widespread use of bisphenol analogues (BPs) as alternatives to bisphenol A (BPA), considerable attention for health risk has been shown in aquatic ecosystems. The occurrence and distribution of six BPs were researched in a soluble phase (<10−3 μm), colloidal phase (10−3 μm to 1 µm), and suspended particulate matter (SPM >1 µm) in a water diversion project of Nanjing, China. Except for bisphenol Z, all BPs were detected in two or three phases, where the total concentrations of detected BPs were 161–613 ng/L, 5.19–77.2 ng/L, and 47.5–353 ng/g for the soluble phase, colloidal phase, and SPM, respectively. Among the detected compounds, BPA is still the dominant BPs in the soluble and colloidal phases, which is followed by bisphenol-S , while bisphenol-AF was the major contaminant in SPM, followed by BPA. The mean contribution proportions of colloids were 1–2 orders of magnitude higher than SPM, which suggests that colloids have a clear impact on regulating BPs’ environmental behaviors. In terms of spatial distribution, the water diversion project could reduce the pollution levels of BPs, which might further affect the ecological security of the Yangtze River.

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“…Environmental hormone bisphenol-A (2,2-bis(4-hydroxyphenyl)propane; BPA) has varying degrees of influence on animals, such as fish [1], rats [2] and human health [3]. A number of countries and regions, including China [4], San Francisco [5], Canada and European Union [6], have issued policies banning BPA in products in response to the adverse effects of BPA.…”

Section: Introductionmentioning

confidence: 99%

Occurrence, Distribution and Ecological Risk of Bisphenol Analogues in The Surface Water from A Water Diversion Project in Nanjing, China

Zheng¹,

Liu²,

Ren³

et al. 2019

Preprint

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Because of the widespread use of bisphenol analogues (BPs) as the alternatives to bisphenol A (BPA), they have attracted considerable attention for health risk in aquatic ecosystems. The occurrence and distribution of six BPs were researched in soluble phase (< 5 kDa), colloidal phase (5 kDa to 1 µm) and suspended particulate matter (SPM > 1 µm) in a water diversion project of Nanjing, China. Except for bisphenol Z, all BPs were detected in the two or three phases, the total concentrations of detected BPs were 161-613 ng/L, 5.19-77.2 ng/L and 47.5-353 ng/g for the soluble phase, colloidal phase and SPM, respectively. Among the detected compounds, BPA still the dominant BPs in the soluble and colloidal phases, followed by BPS, while BPAF was the major contaminant in SPM, followed by BPA. The mean contribution proportions of colloids were 1-2 orders of magnitude higher than SPM, suggesting that colloids have an obvious impact on regulating BPs’ environmental behaviors. In terms of spatial distribution, although the water diversion project could reduce the pollution levels of BPs, which might further affect the ecological security of the Yangtze River.

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Heterogeneous activation of persulfate by NiFe2−xCoxO4-RGO for oxidative degradation of bisphenol A in water

Cited by 65 publications

References 78 publications

Organic Solvent-Free Process for the Rapid Fabrication of Nickel Ferrite-Reduced Graphene Oxide as a Magnetic Nanosorbent Using Supercritical Water

Organic Solvent-Free Process for the Rapid Fabrication of Nickel Ferrite-Reduced Graphene Oxide as a Magnetic Nanosorbent Using Supercritical Water

Occurrence, Distribution and Ecological Risk of Bisphenol Analogues in the Surface Water from a Water Diversion Project in Nanjing, China

Occurrence, Distribution and Ecological Risk of Bisphenol Analogues in The Surface Water from A Water Diversion Project in Nanjing, China

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