A Fenton-like system of biochar loading Fe–Al layered double hydroxides (FeAl-LDH@BC) / H2O2 for phenol removal

Fan, Xiaoliang; Cao, Qingqing; Meng, Fanyue; Song, Bing; Bai, Zhiyong; Zhao, Yan; Chen, Dandan; Zhou, Yan; Song, Min

doi:10.1016/j.chemosphere.2020.128992

Cited by 21 publications

(12 citation statements)

References 52 publications

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“…The large broad band in the range of 3200–3600 cm −1 exhibited the stretching vibration of the –OH in MMH, while the vibration peak at 1631 cm −1 relating to –OH bending vibration of water molecules was also observed. The small peaks below 800 cm −1 corresponded to the metal-oxygen stretching and bending modes of MMH [ 27 ]. In Figure 1 (b–f), the additional weak Fe–O–Ti vibration located at 1064 cm −1 , and the vibration broad band around 400–900 cm −1 relating to the Ti–O–Ti vibration were observed.…”

Section: Resultsmentioning

confidence: 99%

Surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide for magnetic solid phase extraction of bisphenols in carbonated beverages

Gamonchuang

Burakham

2021

Heliyon

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In this work, the magnetic sorbents based on different surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide were investigated as sorbent for extraction of bisphenol compounds. The structure, morphology, and magnetic property of the synthesized sorbents were investigated. The cetyltrimethylammonium bromide-titanium dioxide coated iron-aluminium mixed metal hydroxide (Fe-Al MMH@TiO 2 -CTAB) exhibited excellent extraction performance toward bisphenols and was selected as the sorbent for development of magnetic solid phase extraction (MSPE) method. The entire MSPE process was optimized, and the extract was analyzed by high performance liquid chromatography with photodiode array detector. The method provided wide linear calibration ranges for bisphenols between 0.3-6000 μg L À1 with maximum enrichment factors of 280. The limits of detection and limits of quantification were in the ranges of 0.08-0.3 and 0.3-1.0 μg L À1 , respectively. The proposed MSPE method was tested for determination of bisphenols in carbonated beverages. The studied carbonated beverages were mostly free of bisphenol contamination; however, BPS, BPA and BPB were detected in samples taken from defective cans. The relative recoveries ranging of 80.2-118.9% were obtained. The asprepared Fe-Al MMH@TiO 2 -CTAB sorbent provided high sorption capacities in the range of 2215-2451 mg kg À1 and could be a promising material for bisphenols in beverage samples.

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Section: Resultsmentioning

confidence: 99%

Surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide for magnetic solid phase extraction of bisphenols in carbonated beverages

Gamonchuang

Burakham

2021

Heliyon

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“…The precipitate was collected by centrifugation at 5000 rpm, washed twice with deionized water, and dispersed in 40 mL of deionized water, resulting in a homogeneous suspension of 8.0 mg/mL Mg 2 Al-NO 3 -LDH after 4−6 days. It is to be noted that due to the strong intercalation ability of CO 3 2− , N 2 purging was required in the preparation of Mg 2 Al-Cl-LDH, Mg 2 Al-NO 3 -LDH, and 24 a NiFe-LDH suspension with a mass concentration of 12.0 mg/mL 25 or a NiAl-LDH suspension with a mass concentration of 11.0 mg/mL was obtained. 26 2.3.…”

Section: Methodsmentioning

confidence: 99%

Determination of the Catalytic Activity of a Peroxidase-like Nanozyme and Differences among Layered Double Hydroxides with Different Anions and Cations

Ma,

Wang,

Zhang

et al. 2023

ACS Omega

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Nanomaterials with enzyme-like activity, namely, nanozymes, have been widely used as substitutes for natural enzymes, and they show excellent potential for application in many fields, such as biotechnology, environmental chemistry, and medicine. Layered double hydroxides (LDHs) are inorganic nanomaterials with adjustable compositions, simple preparation methods, and low costs and are some of the most promising candidate materials for the preparation of nanozymes. Here, we studied the syntheses and peroxidase-like activities of LDHs with four anions and four cations. First, LDHs prepared by the coprecipitationhydrothermal method adopted hexagonal lamellar structures with good dispersion and uniform particle sizes. The Lambert−Beer law showed that the prepared LDHs exhibited good enzymatic activity. Later, the K m and V max values of the LDHs with different anionic/cationic materials intercalated into their structures were compared. Under the optimum conditions, the V max of Mg 2 Al-NO 3 -LDH was 7.35 × 10 −2 , which is 2−4 times higher than that of the LDHs containing other anions; the V max values of NiFe-LDH and FeAl-LDH were 0.152 and 0.284, respectively, which are 10 times higher than those of the LDHs with other cations. Importantly, according to kinetic analyses of the enzymatic reactions, the effects of Fe 2+ and Fe 3+ on the LDH enzyme activity were greater than those of the intercalated anions. This study showed that NiFe-LDH and FeAl-LDH with high catalytic activities are candidate materials for peroxidase simulations, which may provide new strategies for the application of LDHs in biosensors, antioxidants, biotechnology, and other nanozyme applications.

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“…According to Figure S1, it can be clearly seen that the contour lines are all displayed in the shape of an ellipse, indicating that there is a strong interaction between the two influencing factors. [39] Contour lines in the same oval area…”

Section: Response Surface Analysismentioning

confidence: 99%

Assembly of Mg‐Mo‐Al‐Layered double hydroxides (LDHs) @ MoO₄²⁻ and Its Synergistic Photocatalytic Degradation of Phenol in Wastewater

Pang

Zheng

et al. 2022

ChemistrySelect

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Mg2+‐Mo6+‐Al3+‐MoO42−‐Layered double hydroxides (LDHs) materials were successfully prepared via a hydrothermal method by doping Mo6+ in hydroxide laminates and inserting MoO42− to replace the interlayer anions of LDHs materials. The samples were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM), Fourier transform infrared spectrometer (FTIRS) and ultraviolet‐visible spectrophotometer (UV). The electronic density of states was calculated using the density functional theory (DFT) of Vienna Ab‐initio Simulation Package (VASP). The effects of Mo6+ and MoO42− on the structure, morphology, electronic structure and photocatalytic performance of Mg2+‐Al3+‐LDHs were systematically studied. The conditions for phenol degradation by Mg2+‐Mo6+‐Al3+‐MoO42−‐LDHs were optimized by single factor analysis and response surface methodology. The results show that the MoO42− anion reduces the band gap width and thus enhances the absorption of low‐energy photons. The interaction between cations and anions enhances the photocatalytic performance. When the dosage of Mg2+‐Mo6+‐Al3+‐MoO42−‐LDHs was 0.03 g, the temperature was 40 °C and the visible light irradiation was 15 min, the removal rate of phenol reached 94.76 %.

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A Fenton-like system of biochar loading Fe–Al layered double hydroxides (FeAl-LDH@BC) / H2O2 for phenol removal

Cited by 21 publications

References 52 publications

Surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide for magnetic solid phase extraction of bisphenols in carbonated beverages

Surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide for magnetic solid phase extraction of bisphenols in carbonated beverages

Determination of the Catalytic Activity of a Peroxidase-like Nanozyme and Differences among Layered Double Hydroxides with Different Anions and Cations

Assembly of Mg‐Mo‐Al‐Layered double hydroxides (LDHs) @ MoO₄²⁻ and Its Synergistic Photocatalytic Degradation of Phenol in Wastewater

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A Fenton-like system of biochar loading Fe–Al layered double hydroxides (FeAl-LDH@BC) / H2O2 for phenol removal

Cited by 21 publications

References 52 publications

Surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide for magnetic solid phase extraction of bisphenols in carbonated beverages

Surfactant-coupled titanium dioxide coated iron-aluminium mixed metal hydroxide for magnetic solid phase extraction of bisphenols in carbonated beverages

Determination of the Catalytic Activity of a Peroxidase-like Nanozyme and Differences among Layered Double Hydroxides with Different Anions and Cations

Assembly of Mg‐Mo‐Al‐Layered double hydroxides (LDHs) @ MoO42− and Its Synergistic Photocatalytic Degradation of Phenol in Wastewater

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Assembly of Mg‐Mo‐Al‐Layered double hydroxides (LDHs) @ MoO₄²⁻ and Its Synergistic Photocatalytic Degradation of Phenol in Wastewater