Granular Mg-Fe layered double hydroxide prepared using dual polymers: Insights into synergistic removal of As(III) and As(V)

Choong, Choe Earn; Wong, Kien Tiek; Jang, Seok Byum; Saravanan, Pichiah; Park, Chulhwan; Kim, Jun Seok; Jeon, Byong‐Hun; Choi, Jaeyoung; Yoon, Yeomin; Jang, Min

doi:10.1016/j.jhazmat.2020.123883

Cited by 35 publications

(8 citation statements)

References 49 publications

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“…Siregar et al [19] showed that the composites of Mg/Al-AH and Mg/Al-HC had a higher adsorption capacity for Cr (VI) (32.017 and 208.333 mg/g, respectively) than pristine Zn/Cr LDHs (30.211 mg/g). Choong et al [20] had reported the study of polyacrylamide polyvinyl alcohol. LDH results in higher efficiency for As(V) and As(III) removal with maximum adsorption capacities of 22.8 and 14.1 mg/g, respectively, higher than that of pristine LDH with adsorption capacities of 7.9 and 7.1 mg/g, respectively.…”

Section: M 3+mentioning

confidence: 99%

Adsorption of Fe(II) by Layered Double Hydroxide Composite with Carbon-Based Material (Biochar and Graphite): Reusability and Thermodynamic Properties

et al. 2023

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Layered double hydroxide (LDH) of Ni/Al was synthesized by coprecipitation method at pH 10 followed by the formation of composite with carbon-based material i.e., biochar (B) and graphite (G) to form Ni/Al-B and Ni/Al-G. Materials were characterized by XRD powder, FTIR, BET surface area, thermal analyses, and SEM analysis. The regeneration process and adsorption evaluated the performance of materials toward iron(II) [Fe(II)] from an aqueous solution. The results showed that the surface area of Ni/Al-B (428.94 m2/g) was increased mainly up to twenty-nine-fold than Ni/Al LDH (15.11 m2/g), while Ni/Al-G (21.59 m2/g) had slightly increased than pristine LDH. Composite of Ni/Al-B had reusability properties for Fe(II) adsorption up to five cycles and showed higher structural stability. The adsorption capacity of Ni/Al-B was 104.167 mg/g and can be a potential adsorbent to remove Fe(II) from an aqueous solution.

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Section: M 3+mentioning

confidence: 99%

Adsorption of Fe(II) by Layered Double Hydroxide Composite with Carbon-Based Material (Biochar and Graphite): Reusability and Thermodynamic Properties

et al. 2023

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“…As denoted, due to higher surface energy exhibited by LDH, they normally suffered from layers aggregation, which deactivated the solar absorption, thereby reducing their efficiency as a standalone photocatalyst. 230 Therefore, a hierarchical structure composed of multidimensional domains inherently provides substantial support for LDH and reduces particle aggregation with abundant exposed catalytic sites. 185 The hierarchical structure of V-based LDH was disclosed by Wang et al by integrating Co-based zeolitic imidazolate framework (ZIF-67) with NiV LDH via the self-assembly method.…”

Section: V-based Ldhmentioning

confidence: 99%

Recent developments in layered double hydroxide structures with their role in promoting photocatalytic hydrogen production: A comprehensive review

Sherryna

Tahir

2021

Intl J of Energy Research

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Layered double hydroxides (LDHs) have received scientific attractions due to their unique two-dimensional (2D) structure, band gap tunability, and compositional flexibility, leading to the facile incorporation of the metal species into their layered structure. The main objective of this review is to explore the current advancement of LDH-based photocatalysts for photocatalytic hydrogen production by focusing on the role of divalent and trivalent metal incorporations and their efficiency enhancement. Firstly, the mechanism of photocatalysis and its thermodynamics has been explicated to gain basic understanding and fundamentals. Secondly, a brief introduction to the overview of LDH photocatalysts with special attention to the effects of cationic incorporations on the optical properties and computational study towards the electronic density has been demonstrated. Besides, the thermal stability of LDH is briefly discussed, focusing on the effects of temperature towards the conversion into mixed-metal oxide (MMO). Next, the classification of LDH based on divalent and trivalent cationic elements and their role in the brucite layer of LDH are systematically discussed. Attention is given to the mechanistic properties of the extensively studied metals, such as Mg, Ni, Zn, Co, Cr, Fe, V and Al, with the efficiency enhancements through various engineering aspects are demonstrated. The overview summary on the efficient design of LDH is elucidated to provide a deep understanding for improving their photocatalytic properties. Lastly, the future perspectives and recommendations are discussed to provide new insight into the potential of LDH and render them a notable place in solar energy applications.

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“…The thermogravimetric analysis (TGA) was performed using a Netzsch STA 409 PC/PG equipment. A ζ-potential analyzer (Zetasizer 2000; Malvern, England) was used to determine the ζ-potential of samples in the pH range (2)(3)(4)(5)(6)(7)(8)(9)(10)(11). The chemical compositions of the samples were examined using a PANalytical PW-4400 X-ray fluorescence (XRF) spectrometer, and the states of elements on the surface of adsorbents were explored using X-ray photoelectron spectroscopy (XPS, ESCALAB 250XI, Thermo, Waltham, MA, USA) To determine pH, a pH meter (PHS-2, Three Letters Instrument Factory, Shanghai, China) was used.…”

Section: Characterization and Equipmentmentioning

confidence: 99%

“…Arsenic may enter the body by drinking contaminated water or by food chain if crops or vegetation are grown in arsenic-contaminated soil [8]. Long-term exposure to arsenic can cause health hazards and results in arsenicosis (arsenic poisoning) and death, even at trace levels [9][10][11]. The World Health Organization (WHO) has set a limit on arsenic concentration in drinking water as ≤10 µg•L −1 [12], likewise, China has set a limit of maximum arsenic concentration in groundwater (10 µg•L −1 for Class III; 50 µg•L −1 for Class IV and V), surface water (50 µg•L −1 for Class I, II and III), and soil (20-40 mg•Kg −1 for agriculture) while a high arsenic concentration (>300 µg•L −1 ) exceeding the national limits were reported in PRD as per previous studies [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Single and Simultaneous As(III) Adsorption in Pearl River Delta Water by Hexylamine Functionalized Vermiculite

Ahmed

et al. 2021

Water

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Enhanced As(III) removal (>99.7) was achieved by a novel organoclay (HEX-VER) adsorbent in Pearl River Delta water. Single and simultaneous As(III) removal in the presence of Cd(II) and/or Pb(II) by batch adsorption tests was analyzed. Spectroscopic, spectrometric, microscopic, and potentiometric techniques were used for characterization of the adsorbents. The parameters affecting As(III) adsorption, including pH, kinetic, isotherm, thermodynamic, and co-existing ions (Cl−, F−, NO3−, CO32−, SO42−, Ca2+ and Mg2+) were also investigated. The results showed that HEX-VER owned different morphology and larger average pore diameter after functionalization, resulting in an improvement of As (III) adsorption capacity. Further analysis confirmed that adsorption was of the monomolecular layer, well-described by the Langmuir isotherm model. The dominant mechanisms for As(III) removal were ion-exchange and complexation. Moreover, HEX-VER was regenerated for five consecutive cycles, and the removal ratio was ≈ 92%, showing its great regeneration potential. These findings suggest that the proposed inexpensive adsorbent has potential for practical applications of As(III) removal from river water.

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Granular Mg-Fe layered double hydroxide prepared using dual polymers: Insights into synergistic removal of As(III) and As(V)

Cited by 35 publications

References 49 publications

Adsorption of Fe(II) by Layered Double Hydroxide Composite with Carbon-Based Material (Biochar and Graphite): Reusability and Thermodynamic Properties

Adsorption of Fe(II) by Layered Double Hydroxide Composite with Carbon-Based Material (Biochar and Graphite): Reusability and Thermodynamic Properties

Recent developments in layered double hydroxide structures with their role in promoting photocatalytic hydrogen production: A comprehensive review

Enhanced Single and Simultaneous As(III) Adsorption in Pearl River Delta Water by Hexylamine Functionalized Vermiculite

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