In situ anchor of magnetic Fe3O4 nanoparticles onto natural maifanite as efficient heterogeneous Fenton-like catalyst

Zhao, Hang; Weng, Ling; Cui, Weiwei; Zhang, Xiaorui; Xu, Huan-Yan; Liu, Lizhu

doi:10.1007/s11706-016-0346-8

Cited by 11 publications

(4 citation statements)

References 37 publications

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“…Figure 4 displays the magnetization curves and the nitrogen adsorption capacity of some samples in Table 1. The magnetization curves shown in Figure 4a are consistent with the magnitude scale measured for composites with variable ferromagnetic spheres loads [16][17][18][19]. Figure 4b is a magnification of Figure 4a for low magnetic fields in which the characteristic hysteresis loops of ferromagnetic materials are distinguished.…”

Section: Structure Of Guefoams: General Structure and Features Of Al-supporting

confidence: 80%

Highly Adsorptive and Magneto-Inductive Guefoams (Multifunctional Guest-Containing Foams) For Enhanced Energy-Efficient Preconcentration and Management of VOCs

Molina-Jordá

2020

ACS Appl. Mater. Interfaces

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The design of multifunctional materials is a current demand for high-end technological applications that need to combine different functions unable to be accomplished by a single material. The aim of this work is to present, at first glance, a new family of recently patented multifunctional porous materials developed by locating granular phases with specific functionality (guests) within the cavities of open-pore cellular materials (hosts) and, at second glance, the use of a set of these materials for the preconcentration and management of volatile organic compounds (VOCs). These materials (herein known as Guefoams, acronym for Guest-containing foams), present host foams and guest phases that are not bonded and therefore allow fluids to pass through. The processing method is the gas pressure infiltration of a host precursor into

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Section: Structure Of Guefoams: General Structure and Features Of Al-supporting

confidence: 80%

Highly Adsorptive and Magneto-Inductive Guefoams (Multifunctional Guest-Containing Foams) For Enhanced Energy-Efficient Preconcentration and Management of VOCs

Molina-Jordá

2020

ACS Appl. Mater. Interfaces

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“…Applying the desirability function methodology for α-Fe2O3MSs and PdNCs embedded α-Fe2O3MSs, the optimum level of parameters obtained were pH 1.72, catalyst dosage 2.69 g L -1 and irradiation time 68.34 min for maximum decolorization of 93.85 and 96.56% respectively. Compared to the results obtained by using other Fenton catalysts like mesoporous Fe2O3-SiO2 composite, α-Fe2O3supported HY zeolite, Fe3O4/MWCNTs nanocomposites, Fe3O4 nanoparticles, steel industry waste for degradation of MO, PdNCs embedded α-Fe2O3MSs displayed a higher discoloration ratio even at a lower reaction time (Panda et al, 2011;Jaafar et al, 2012;Xu et al, 2016;Zhao et al, 2016;Ali et al, 2013). Even though a higher amount of PdNCs embedded α-Fe2O3MSs catalyst dosage was used for decolorization, the main advantage was the lower reaction time, recoverability.…”

Section: Effect Of Process Parameters On Decolorization Of Momentioning

confidence: 80%

Biogenic synthesis of PdNCs embedded α-Fe2O3 microspheres using Myrtus cumini L. leaf extract and a Box-Behnken optimization of its Fenton-like catalytic activity

2019

Global NEST: The International Journal

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<p>Microspheres (MSs) of paramagnetic iron oxide (α-Fe2O3) embedded with palladium nanocubes (PdNCs) were biosynthesized using Myrtus cumini L. leaf extract. The synthesized PdNCs embedded α-Fe2O3 microspheres were characterized using FTIR, XRD and SEM/EDX. The FTIR spectrum of the Myrtus cumini L. leaf extract confirmed the presence of phenol, ester and amine groups that were involved in the bio-reduction of PdCl2 to PdNCs. SEM/EDX revealed that the PdNCs with size range of 15–250 nm were present on the surface of the synthesized microspheres. Box-Behnken Design (BBD) was employed for optimization of Methyl Orange (MO) decolorization using α-Fe2O3MSs and PdNCs embedded α-Fe2O3MSs at pH (1, 2 and 3), catalyst dosage (1, 3 and 5 g L-1) and reaction irradiation time (30, 60 and 90 min). It was found that PdNCs embedded α-Fe2O3MSs had maximum decolorization of 96.56 % at pH 1.72, catalyst dosage 2.69 g L-1 and irradiation time 68.34 min.</p>

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“…Maifanite is a kind of natural clay minerals with an eco-friendly characteristic, which is abundant in China 32 , 33 . Maifanite has great surface area and strong adsorption capacity due to the vesicular pores and sponge shaped morphological structure 34 , 35 . It could adsorb P via chemisorption due to the aluminum (Al) and iron (Fe), etc.…”

Section: Introductionmentioning

confidence: 99%

“…The market price of raw maifanite (RMF) is about 300–400 yuan (¥)/t. Due to its low cost and high capability, maifanite has been applied to soil improvement 35 , which contains amino acid and some trace elements, and could be further combined with ecological remediation. The adsorption capacity of RMF material is usually limited, attributed to the presence of impurity and the permanent negative charges due to isomorphous substitution effect 37 .…”

Section: Introductionmentioning

confidence: 99%

Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite

Liu

Zeng

Han

et al. 2018

Sci Rep

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Sediment phosphorus (P) removal is crucial for the control of eutrophication, and the in-situ adsorption is an essential technique. In this study, modified maifanite (MMF) prepared by acidification, alkalization, salinization, calcination and combined modifications, respectively, were first applied to treat sediment P. The morphology and microstructure of MMF samples were characterized by X-ray fluorescence (XRF), Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscope (SEM) and Brunauer-Emmett-Teller (BET). Various adsorption parameters were tested, such as dosage of maifanite, time, operation pH and temperature. The adsorption mechanisms were also investigated and discussed. Results showed that CMMF-H2.5-400 (2.5 mol/L H2SO4 and calcined at 400 °C) exhibited the highest P adsorption capacity. Thus, it was selected as the in-situ adsorbent material to control the internal P loading. Under the optimal conditions of dynamic experiments, the adsorption rates of TP, IP, OP, Fe/Al-P and Ca-P by CMMF-H2.5-400 were 37.22%, 44.41%, 25.54%, 26.09% and 60.34%, respectively. The adsorption mechanisms analysis revealed that the adsorption of P onto CMMF-H2.5-400 mainly by ligand exchange. Results of this work indicated that the modification treatment could improve the adsorption capacity of maifanite, and CMMF-H2.5-400 could be further applied to eutrophication treatment.

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In situ anchor of magnetic Fe3O4 nanoparticles onto natural maifanite as efficient heterogeneous Fenton-like catalyst

Cited by 11 publications

References 37 publications

Highly Adsorptive and Magneto-Inductive Guefoams (Multifunctional Guest-Containing Foams) For Enhanced Energy-Efficient Preconcentration and Management of VOCs

Highly Adsorptive and Magneto-Inductive Guefoams (Multifunctional Guest-Containing Foams) For Enhanced Energy-Efficient Preconcentration and Management of VOCs

Biogenic synthesis of PdNCs embedded α-Fe2O3 microspheres using Myrtus cumini L. leaf extract and a Box-Behnken optimization of its Fenton-like catalytic activity

Investigation on the adsorption of phosphorus in all fractions from sediment by modified maifanite

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