A novel magnetic ZnFe2O4 aerogel photocatalyst for visible light reduction of Cr(VI) at high concentrations: Facile synthesis, enhanced activity and photocatalytic mechanism, combined with first-principles calculations

Huang, Shuntian; Tai, Juxiang; Hao, Wenke; Lu, Jiaxin; Liu, Sijia; Wu, Xiaodong; Cui, Sheng

doi:10.1016/j.ceramint.2021.10.184

Cited by 14 publications

(3 citation statements)

References 40 publications

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“…First of all, the equivalent volume of solution of 0.1 M Zn(NO 3 ) 2 • 6H 2 O and 0.3 M FeCl 3 • 6H 2 O was prepared for gaining ZFO-Fe 2 O 3 , that is, by controlling the ratio of Zn(NO 3 ) 2 • 6H 2 O and FeCl 3 • 6H 2 O with 1 : 3. Previously, Huang et al [77] reported pure ZnFe 2 O 4 by sol-gel method using ZnCl 2 and FeCl 3 as materials (ZnCl 2 : FeCl 3 = 1 : 2). After mixing the two solutions, 0.4 M citric acid solution was added to it and stirred well to obtain the mixed solution.…”

Section: Experimental Materialsmentioning

confidence: 99%

Flexible g‐C₃N₄ Enhancing Superior Cycling Stability of ZnFe₂O₄‐Fe₂O₃ Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Huang,

Hu,

et al. 2023

ChemElectroChem

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For lithium‐ion batteries, iron‐based oxides are expected to be the next generation of anode materials because of their high theoretical capacity, environmental friendliness, and affordability. Although, like most transition metal oxides, iron‐based oxides suffer from poor electrical conductivity and cycling performance, volume expansion during charging and discharging, and easily agglomerated. g‐C3N4 has a graphene‐like layered structure consisting of nitrogen‐linked C6N7 repeating units. The abundant nitrogen content can improve the wettability of the electrode and electrolyte, thus improving the lithium charge transfer process, and secondly g‐C3N4 is less expensive and easier to prepare than graphene. Here, we report composites with metal oxide nanosheets (ZnFe2O4−Fe2O3) attached to softly curved g‐C3N4 nanosheets. When used as an anode material for lithium‐ion batteries, after 300 cycles at the current density of 500 mA g−1, ZFO‐Fe2O3/g‐C3N4 offers the discharge specific capacity (1518.5 mAh g−1) and can still deliver 639.2 mAh g−1 at the high current density (10 A g−1). Due to the introduction of g‐C3N4 alleviated the volume change of the electrode, shortened the diffusion distance of Li+ and provided more reactive sites, resulting in excellent electrochemical performance of ZFO‐Fe2O3/g‐C3N4.

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Section: Experimental Materialsmentioning

confidence: 99%

Flexible g‐C₃N₄ Enhancing Superior Cycling Stability of ZnFe₂O₄‐Fe₂O₃ Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Huang,

Hu,

et al. 2023

ChemElectroChem

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“…Aerogel is a nanomaterial made up of nanoparticles, nanowires, or nanosheets that has a three-dimensional porous network-like structure. It is widely employed in the domains of thermal insulation, adsorption, catalysis, and energy storage due to its coherent pore structure and high specific surface area [ 13 , 14 , 15 ]. Aerogels used as electrocatalysts for OER reactions can be broadly classified into two categories: catalyst barriers and aerogel-structured catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…To solve the above problems, many new techniques have been proposed in recent years, such as chemical reduction self-assembly, the template method and 3D printing. Meanwhile, atmospheric pressure drying and freeze-drying technologies are also developing rapidly and gradually replacing supercritical drying [ 13 , 14 , 15 ]. Among the graphene aerogel preparation methods, freeze-drying assisted by chemical reduction self-assembly is undoubtedly the simplest and most efficient method to achieve large-scale production by using the property of the self-assembly of graphene sheet layers into three-dimensional structures.…”

Section: Introductionmentioning

confidence: 99%

Tuning the Electronic Structure of a Novel 3D Architectured Co-N-C Aerogel to Enhance Oxygen Evolution Reaction Activity

Huang

Koudama

et al. 2023

Gels

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Hydrogen generation through water electrolysis is an efficient technique for hydrogen production, but the expensive price and scarcity of noble metal electrocatalysts hinder its large-scale application. Herein, cobalt-anchored nitrogen-doped graphene aerogel electrocatalysts (Co-N-C) for oxygen evolution reaction (OER) are prepared by simple chemical reduction and vacuum freeze-drying. The Co (0.5 wt%)-N (1 wt%)-C aerogel electrocatalyst has an optimal overpotential (0.383 V at 10 mA/cm2), which is significantly superior to that of a series of M-N-C aerogel electrocatalysts prepared by a similar route (M = Mn, Fe, Ni, Pt, Au, etc.) and other Co-N-C electrocatalysts that have been reported. In addition, the Co-N-C aerogel electrocatalyst has a small Tafel slope (95 mV/dec), a large electrochemical surface area (9.52 cm2), and excellent stability. Notably, the overpotential of Co-N-C aerogel electrocatalyst at a current density of 20 mA/cm2 is even superior to that of the commercial RuO2. In addition, density functional theory (DFT) confirms that the metal activity trend is Co-N-C > Fe-N-C > Ni-N-C, which is consistent with the OER activity results. The resulting Co-N-C aerogels can be considered one of the most promising electrocatalysts for energy storage and energy saving due to their simple preparation route, abundant raw materials, and superior electrocatalytic performance.

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Ag2O modified magnetic BaFe12O19/C3N4 photocatalysts with enhanced antibiotic removal: Photocatalytic mechanism and toxicity evaluation

Zhou

Chen

et al. 2023

Advanced Powder Technology

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A novel magnetic ZnFe2O4 aerogel photocatalyst for visible light reduction of Cr(VI) at high concentrations: Facile synthesis, enhanced activity and photocatalytic mechanism, combined with first-principles calculations

Cited by 14 publications

References 40 publications

Flexible g‐C₃N₄ Enhancing Superior Cycling Stability of ZnFe₂O₄‐Fe₂O₃ Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Flexible g‐C₃N₄ Enhancing Superior Cycling Stability of ZnFe₂O₄‐Fe₂O₃ Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Tuning the Electronic Structure of a Novel 3D Architectured Co-N-C Aerogel to Enhance Oxygen Evolution Reaction Activity

Ag2O modified magnetic BaFe12O19/C3N4 photocatalysts with enhanced antibiotic removal: Photocatalytic mechanism and toxicity evaluation

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A novel magnetic ZnFe2O4 aerogel photocatalyst for visible light reduction of Cr(VI) at high concentrations: Facile synthesis, enhanced activity and photocatalytic mechanism, combined with first-principles calculations

Cited by 14 publications

References 40 publications

Flexible g‐C3N4 Enhancing Superior Cycling Stability of ZnFe2O4‐Fe2O3 Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Flexible g‐C3N4 Enhancing Superior Cycling Stability of ZnFe2O4‐Fe2O3 Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Tuning the Electronic Structure of a Novel 3D Architectured Co-N-C Aerogel to Enhance Oxygen Evolution Reaction Activity

Ag2O modified magnetic BaFe12O19/C3N4 photocatalysts with enhanced antibiotic removal: Photocatalytic mechanism and toxicity evaluation

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Product

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Flexible g‐C₃N₄ Enhancing Superior Cycling Stability of ZnFe₂O₄‐Fe₂O₃ Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries

Flexible g‐C₃N₄ Enhancing Superior Cycling Stability of ZnFe₂O₄‐Fe₂O₃ Nanosheet Composites as High‐Capacity Anode Materials for Lithium‐Ion Batteries