Electrodeposition of hierarchically amorphous FeOOH nanosheets on carbonized bamboo as an efficient filter membrane for As(III) removal

Wang, Yongchuang; Gu, Yue; Li, Huaimeng; Ye, Mengxiang; Qin, Wenxiu; Zhang, Haimin; Wang, Guozhong; Zhang, Yunxia; Zhao, Huijun

doi:10.1016/j.cej.2019.123773

Cited by 43 publications

(26 citation statements)

References 58 publications

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“…The selected area electron diffraction (SAED) exhibits very weak diffraction rings, suggesting the amorphous/low-crystalline nature of the immobilized Fe-MOG nanoparticles. Based on the mass variation of the BC aerogel before and after Fe-MOG anchoring, the loading amount of Fe-MOG nanoparticles in the Fe-MOG/BC composite is as high as 76.8%, which is far superior to those of other active materials grafted onto porous substrates and can be expected to offer copious binding sites for the target pollutants. , In addition, the obtained Fe-MOG/BC aerogel possesses a low density (1.809 mg cm –3 ); moreover, a monolith with a volume of ca. 2 cm 3 can be easily held by a piece of dandelion (Figure d), indicating its ultralight characteristics.…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Porous Iron Metal–Organic Gel/Bacterial Cellulose Aerogel: Ultrafast, Scalable, Room-Temperature Aqueous Synthesis, and Efficient Arsenate Removal

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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Rational design of advanced adsorbed materials with hierarchically porous architecture, high surface area, and macroscopic shapeability is of great significance for boosting their potential in practical applications. Herein, a monolithic iron metal–organic gel/bacterial cellulose (denoted as Fe-MOG/BC) composite has been successfully fabricated based on an ultrafast, scalable, aqueous-based synthetic strategy at room temperature. As expected, the resulting Fe-MOG/BC aerogel possesses a three-dimensional (3D) hierarchically porous microstructure and abundant active sites, being ultralight, water-fast, and mechanically robust. Benefiting from these unique structural characteristics, the resulting Fe-MOG/BC composite exhibits superb saturated sorption capacity (495 mg g–1) toward arsenate, outperforming other reported nanoadsorbents. Further, the Fe-MOG/BC aerogel enables efficient decontamination of 5 ppm of As(V) to below the permitted threshold in drinking water (10 ppb) within 30 min, accompanied by excellent selectivity and reusability. Significantly, as an efficient filter unit, the Fe-MOG/BC aerogel (0.1 g) can continuously treat 3900 mL wastewater (spiked with 1 ppm As(V)) to the safe level. Such an excellent As(V) decontamination capability of Fe-MOG/BC together with the ease, low cost, and scalable production prefigures its huge prospects for practical wastewater remediation.

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Section: Resultsmentioning

confidence: 99%

Hierarchical Porous Iron Metal–Organic Gel/Bacterial Cellulose Aerogel: Ultrafast, Scalable, Room-Temperature Aqueous Synthesis, and Efficient Arsenate Removal

Zhang

et al. 2021

ACS Appl. Mater. Interfaces

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“…The Fe 3+ ions were reduced to Fe 2+ and then reacted with the hydroxides produced by NO 3 – reduction to generate Fe(OH) 2 (reaction ). , In addition, the rest of the Fe 3+ ions were reacted with OH – ions provided by NO 3 – ion reduction to form FeOOH, reaction . − The mixture of Fe(OH) 2 and FeOOH was named as FeO x H in this work. …”

Section: Resultsmentioning

confidence: 99%

Constructing Double-Layer CoP/CeO₂–FeO_xH Hybrid Catalysts for Alkaline and Neutral Water Splitting

Tan

Che

2021

ACS Sustainable Chem. Eng.

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There is a great challenge in designing bifunctional electrocatalysts with low-cost and high-efficiency for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline and neutral electrolytes. In this work, a double-layer CoP/CeO 2 −FeO x H mixed catalyst is successfully prepared by a two-step electrodeposition process as a bifunctional electrocatalyst in alkaline and neutral solutions. The CoP/CeO 2 −FeO x H catalytic electrode in alkaline and neutral solutions exhibits overpotentials of 37 for HER and 248 for OER at 10 mA cm −2 . The cell voltages of the whole electrolyzed water in alkaline and neutral media are 1.53 and 1.82 V at the current density of 10 mA cm −2 , respectively. Moreover, this catalyst also shows a significant balance between catalytic activity and stability. This work not only provides a new strategy for the preparation of double-layer composite materials but also provides an experimental reference for the industrial development of electrolyzed water in alkaline or neutral solutions.

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“…Iron-based compounds, especially FeOOH, as an earth-rich and environmentally friendly material, are expected to be used for water oxidation due to their strong adsorption of hydroxyl groups. There are many methods for preparing FeOOH, such as chemical bath deposition, chemical conversion, hydrothermal method 59 , electrodeposition 60 etc., in which, hydrothermal method and electrodeposition method are widely used. Ma et al rationally designed and successfully prepared FeOOH nanosheet arrays on foamed nickel by surface hydrothermal method, and applied them to OER reaction 61 .…”

Section: Iron Oxyhydroxidesmentioning

confidence: 99%

Development of Iron-Based Heterogeneous Cocatalysts for Photoelectrochemical Water Oxidation

Li¹,

Hu²,

Huang³

et al. 2020

Acta Physico Chimica Sinica

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The use of fossil fuels has caused serious environmental problems such as air pollution and the greenhouse effect. Moreover, because fossil fuels are a non-renewable energy source, they cannot meet the continuously increasing demand for energy. Therefore, the development of clean and renewable energy sources is necessitated. Hydrogen energy is a clean, non-polluting renewable energy source that can ease the energy pressure of the whole society. The sunlight received by the Earth is 1.7 × 10 14 J in 1 s, which far exceeds the total energy consumption of humans in one year. Therefore, conversion of solar energy to valuable hydrogen energy is of significance for reducing the dependence on fossil fuels. Since Fujishima and Honda first reported on TiO2 in 1972, it has been discovered that semiconductors can generate clean, pollution-free hydrogen through water splitting driven by electricity or light. Hydrogen generated through this approach can not only replace fossil fuels but also provide environmentally friendly renewable hydrogen energy, which has attracted considerable attention. Photoelectrochemical (PEC) water splitting can use solar energy to produce clean, sustainable hydrogen energy. Because the oxygen evolution reaction (OER) over a photoanode is sluggish, the overall energy conversion efficiency is considerably low, limiting the practical application of PEC water splitting. A cocatalyst is, thus, necessary to improve PEC water splitting performance. So far, the synthesis of first-row transition-metal-based (e.g., Fe, Co, Ni, and Mn) cocatalysts has been intensively studied. Iron is earth-abundant and less toxic than other transition metals, making it a good cocatalyst. In addition, iron-based compounds exhibit the properties of a semiconductor/metal and have unique electronic structures, which can improve electrical conductivity and water adsorption. Various iron-based catalysts with high activity have been designed to improve the efficiency of PEC water oxidation. This article briefly summarizes the research progress related to the structure, synthesis, and application of iron oxyhydroxides, iron-based layered double hydroxides, and iron-based perovskites and discusses the evaluation of the performance of these cocatalysts toward photoelectrochemical water oxidation.

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Electrodeposition of hierarchically amorphous FeOOH nanosheets on carbonized bamboo as an efficient filter membrane for As(III) removal

Cited by 43 publications

References 58 publications

Hierarchical Porous Iron Metal–Organic Gel/Bacterial Cellulose Aerogel: Ultrafast, Scalable, Room-Temperature Aqueous Synthesis, and Efficient Arsenate Removal

Hierarchical Porous Iron Metal–Organic Gel/Bacterial Cellulose Aerogel: Ultrafast, Scalable, Room-Temperature Aqueous Synthesis, and Efficient Arsenate Removal

Constructing Double-Layer CoP/CeO₂–FeO_xH Hybrid Catalysts for Alkaline and Neutral Water Splitting

Development of Iron-Based Heterogeneous Cocatalysts for Photoelectrochemical Water Oxidation

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Electrodeposition of hierarchically amorphous FeOOH nanosheets on carbonized bamboo as an efficient filter membrane for As(III) removal

Cited by 43 publications

References 58 publications

Hierarchical Porous Iron Metal–Organic Gel/Bacterial Cellulose Aerogel: Ultrafast, Scalable, Room-Temperature Aqueous Synthesis, and Efficient Arsenate Removal

Hierarchical Porous Iron Metal–Organic Gel/Bacterial Cellulose Aerogel: Ultrafast, Scalable, Room-Temperature Aqueous Synthesis, and Efficient Arsenate Removal

Constructing Double-Layer CoP/CeO2–FeOxH Hybrid Catalysts for Alkaline and Neutral Water Splitting

Development of Iron-Based Heterogeneous Cocatalysts for Photoelectrochemical Water Oxidation

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Constructing Double-Layer CoP/CeO₂–FeO_xH Hybrid Catalysts for Alkaline and Neutral Water Splitting