Highly efficient removal of As(V) by using NiAl layered double oxide composites

Lv, Zhimin; Yang, Shimin; Zhu, Hongshan; Chen, Lei; Alharbi, Njud S.; Wakeel, Muhammad; Wahid, Abdul; Chen, Changlun

doi:10.1016/j.apsusc.2018.04.162

Cited by 51 publications

(14 citation statements)

References 42 publications

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“…Ni 3 S 2 nanorods and rGO nanosheets can be seen from Figure a, and the interplanar spacing can be demonstrated to be 0.41 nm from the inset, corresponding to the (101) plane of Ni 3 S 2 . Moreover, ultrathin NiAl-LDHs nanosheets grow vertically (Figure b); the interplanar spacing can be demonstrated to be 0.26 nm from the inset, corresponding to the (012) plane of NiAl-LDHs. , …”

Section: Resultsmentioning

confidence: 98%

“…Moreover, ultrathin NiAl-LDHs nanosheets grow vertically (Figure 2b); the interplanar spacing can be demonstrated to be 0.26 nm from the inset, corresponding to the (012) plane of NiAl-LDHs. 35,36 Typical X-ray diffraction (XRD) analysis of Ni 3 S 2 , Ni 3 S 2 @ rGO, and Ni 3 S 2 @rGO@NiAl-LDHs on Ni foam is illustrated in Figure 3a. Three typical strong peaks could be attributed to Ni foam.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Hierarchical Structured Ni₃S₂@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Guo

Song

Tan

et al. 2018

ACS Sustainable Chem. Eng.

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In this account, a well-aligned hierarchical nickel sulfide@reduced graphene oxide@nickel aluminum layered double hydroxides composite (denoted as Ni3S2@rGO@NiAl-LDHs) supported on a Ni-foam substrate is successfully designed and constructed via a successive hydrothermal process. Ni3S2 nanorod arrays grown on Ni foam could provide large open space and short ions diffusion path. Graphene with high specific surface area and excellent conductivity can effectively transfer charges; NiAl-LDHs has large contact area with electrolyte, thus enabling a fast and reversible redox process, which could improve the specific capacitance. As a consequence, the Ni3S2@rGO@NiAl-LDHs fulfills superior specific capacity, pleasurable charge–discharge rate, and outstanding lifespan. Moreover, an advanced asymmetrical device is assembled by employing Ni3S2@rGO@NiAl-LDHs and rGO@Fe3O4-C, which delivers high specific capacity (201.3 F g–1) and exceptional energy density (71.7 Wh kg–1). The well-aligned Ni3S2@rGO@NiAl-LDHs could provide a promising conception constructing hierarchical structural materials in the area of supercapacitors.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Results and Discussionmentioning

confidence: 99%

Hierarchical Structured Ni₃S₂@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Guo

Song

Tan

et al. 2018

ACS Sustainable Chem. Eng.

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“…It is observed that the equilibrium sorption capacity increases with an increase in temperature. It signifies that the interaction of As(V) with LDO was endothermic in nature . The LDO–DEF shows the maximum adsorption capacity as compared to LDO–F and LDO–DMF samples.…”

Section: Resultsmentioning

confidence: 90%

Al–Mg–Ca-Layered Double Oxides for Efficient Removal of As(V) from Water: The Role of Amides

Kundu

Naskar

2019

J. Chem. Eng. Data

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Al–Mg–Ca-layered double oxides (LDO) were synthesized by solvothermal process at 160 °C/24 h in the presence of formamide (F), dimethylformamide (DMF), and diethylformamide (DEF), followed by calcination at 500 °C. The role of different amides for the formation of Al–Mg–Ca LDOs in terms of their microstructural behaviors, textural properties, and surface elemental analysis toward the removal of As(V) from groundwater was investigated. Microstructural analysis shows chrysanthemum flower-like morphology (2–4 μm) with orderly arrangement of nanorod/petal-like particles (10–15 nm). DEF-modified Al–Mg–Ca LDO exhibited the highest surface area of 251 m2/g, resulting in the maximum As(V) adsorption capacity of 100 mg/g. The XPS study shows peak shifting of Al–O and Mg–O to a higher binding energy after adsorption of As(V), indicating the change in chemical environment, i.e., sharing of elements with the neighboring atoms. The effects of different parameters, like contact time, dose concentration, pH, and temperature, were investigated for As(V) adsorption. The synthesized Al–Mg–Ca LDOs were used for the removal of As(V) (0.7 ppm) from the groundwater collected from the lower Indo-Gangetic plain area (Hariharpara block at Murshidabad district in West Bengal of India) down to <10 ppb.

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“…That is, after LDHs effectively capturing organics from the water via ion-exchange and/or surface adsorption, the spent LDHs can be calcined at moderate temperatures to form the layered double oxides (LDOs), which can restructure to LDHs via rehydrate based on the "memory effect". (Kundu and Naskar 2019;Lv et al 2018;Vu and Wu 2020). In fact, LDOs have been reported as environmental remediation agents for pollutants elimination from the water with superior capacity and reusability.…”

Section: Introductionmentioning

confidence: 99%

Resource utilization of organic spent adsorbent to prepare three-dimensional sulfate-functionalized layered double oxide for superior removal of azo dye

Zhang

Zheng

et al. 2021

Environ Sci Pollut Res

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Developing superior, rapid, cost-effective adsorbents derived from organic spent adsorbent is an economically sustainable way for purifying azo dye wastewater. Herein, we report a precursor-calcination strategy for the recycle of the organic spent adsorbent to a high value-added three-dimensional sulfate-functionalized MgAl-layered double oxide (3S-LDO).Thanks to the unique property of the sulfate group and LDO, 3S-LDO exhibited a superior (4340.71 mg/g) and ultrafast (<1 hour) adsorption toward methyl orange (MO, as the representative of azo dye). A thermodynamic study revealed that the reaction process was spontaneous and exothermic. FT-IR, XPS, and XRD results confirmed that the sulfate from 3S-LDO played a vital role in MO removal wherein the S=O bond (with the electrophilic character) from SO 4 2interacted with the N=N double bond (with rich electron) in MO through the electron donor-acceptor mechanism. And the "memory effect" and surface complexation of 3S-LDO further strengthened the MO adsorption. More importantly, 3S-LDO could work efficiently in a wide pH range and even in the presence of competitive anions (e.g., Cl -, NO 3 -, and CO 3 2-).Multiple cyclic runs and selective tests demonstrated the excellent reusability and explicit selectivity of 3S-LDO. This work not only provides a prospective sulfate-functionalized adsorbent from organic waste for rapid azo dye removal from wastewater but also achieves the high value-added utilization of organic waste.

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Highly efficient removal of As(V) by using NiAl layered double oxide composites

Cited by 51 publications

References 42 publications

Hierarchical Structured Ni₃S₂@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Hierarchical Structured Ni₃S₂@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Al–Mg–Ca-Layered Double Oxides for Efficient Removal of As(V) from Water: The Role of Amides

Resource utilization of organic spent adsorbent to prepare three-dimensional sulfate-functionalized layered double oxide for superior removal of azo dye

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Highly efficient removal of As(V) by using NiAl layered double oxide composites

Cited by 51 publications

References 42 publications

Hierarchical Structured Ni3S2@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Hierarchical Structured Ni3S2@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Al–Mg–Ca-Layered Double Oxides for Efficient Removal of As(V) from Water: The Role of Amides

Resource utilization of organic spent adsorbent to prepare three-dimensional sulfate-functionalized layered double oxide for superior removal of azo dye

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Hierarchical Structured Ni₃S₂@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors

Hierarchical Structured Ni₃S₂@rGO@NiAl-LDHs Nanoarrays: A Competitive Electrode Material for Advanced Asymmetrical Supercapacitors