Composites derived from synthetic clay and carbon sphere: Preparation, characterization, and application for dye decontamination

Dat, Nguyen Duy; Loc, Ton That; Trieu, Mai Thuan; Nguyễn, Đồng Thanh; Nguyen, Khuong Quoc; Nguyen, My Linh; Le, Anh Duy Duong; Tran, Hai Nguyen

doi:10.1007/s11814-021-0940-z

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…Specifically, the q m for CR is higher than those of MgAlLDH (111.11 mg/g) [ 33 ], borate intercalated MgAlLDH (166.39 mg/g) [ 43 ], ZnFe 2 O 4 /MgAlLDH (294.12 mg/g) [ 44 ], and MgAlLDH modified diatom (305.8 mg/g), [ 45 ]. The q m for MB exceeds the values of ZIF-67/CoAlLDH (57.24 mg/g [ 46 ]), NiFeLDH decorated montmorillonite (99.18 mg/g) [ 20 ], dodecyl sulfate modified ZnAl LDH (113.00 mg/g) [ 47 ], and spherical HC capped MgAlLDH (226.00 mg/g) [ 30 ]. For Pb(II) removal, the nanocomposite also outperforms the MgAlLDH (16.93 mg/g) [ 48 ], MgFeLDH (18.45 mg/g) [ 19 ], and tartrate intercalated MgAlLDH (8.40 mg/g) [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

“…For example, Memon et al synthesized an HC and CoAlZnLDH composite through the coprecipitation of Co 2+ , Al 3+ and Zn 2+ in the presence of as-prepared HC at 60 °C, and found that the composite can simultaneously adsorb cationic and anionic dyes [ 29 ]. Dat et al prepared MgAlLDH-capped HC spheres by hydrothermal treatment of pre-synthesized HC and MgAlLDH mixture for removal of single cationic or anionic dye [ 30 ]. Zhang et al fabricated HC-coated MgAlLDH composites by a two-step hydrothermal method to remove either heavy metals or anionic dyes [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al fabricated HC-coated MgAlLDH composites by a two-step hydrothermal method to remove either heavy metals or anionic dyes [ 31 ]. Despite all this, the removal behavior in the multi-pollutant system of dye and heavy metal was not involved, and the syntheses underwent a two-step process [ 30 , 31 ]. Therefore, it is necessary to develop a more simple and more economical synthesis of HC and LDH composite materials and to explore the removal performance and mechanism in multi-pollutant systems.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

et al. 2023

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Organic dyes and heavy metals often coexist in industrial effluents, and their simultaneous removal is a grand challenge. Herein, a hydrochar and MgAl layered double hydroxide (HC–MgAlLDH) nanocomposite was prepared via a facile one-step hydrothermal route, and applied to remove anionic Congo red (CR), cationic Methylene blue (MB) and Pb(II) from aqueous solutions. The nanocomposite was formed by interweaving amorphous HC and crystalline MgAlLDH nanoplates and possessed more functional groups, lower zeta potential and larger specific surface area than uncomposited MgAlLDH. Batch removal experiments showed that the components HC and LDH dominated the CR and MB removals, respectively, whereas Pb(II) removal was conjointly controlled by the two components. The maximum Langmuir removal capacities of the nanocomposite to sole CR, MB, or Pb(II) were 348.78, 256.54 or 33.55 mg/g. In binary and ternary systems, the removal capacities of CR and MB only slightly decreased, while the capacity of Pb(II) increased by 41.13–88.61%. The increase was related to the coordination of Pb(II) with the sulfur-containing groups in dyes and the precipitation of PbSO4. Therefore, the simultaneous removal of CR, MB and Pb(II) was involved in a synergistic effect, including electrostatic adsorption, π–π interaction, coordination and precipitation. The present work shows that the HC–MgAlLDH nanocomposite has great potential for wastewater integrative treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

et al. 2023

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“…Adsorption isotherms of UiO-67, CNTs, and UiO-67@CNTs at pH 7 at 25 °C are displayed in Figure 7. Due to sensitivity of anionic CR towards the acids and bases, the color of CR solution changes from red to dark blue at low pH, and it becomes reddish in basic pH of up to 10 (Purkait et al 2007;Sahara et al 2019;Dat et al 2022). Therefore, pH ¼ 7 is selected in this study because anionic CR solution remains stable and no change in the color is observed at this pH value.…”

Section: Performances Evaluation Of Cr Capturementioning

confidence: 99%

Well-design and synthesis of a water- and heat-resistant UiO-67@CNTs composite for Congo red efficient capture

Jin

et al. 2022

Water Science and Technology

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MOFs (metal-organic frameworks) significantly suffer from water- and heat instable issues, restricting their practical application, such as the capture of hazardous anionic dyes (e.g. Congo red, CR) from water. In present contribution, a series of novel composites (UiO-67@CNTs) composed of microporous UiO-67 (Zr6O4(OH)4(CO2)12) and mesoporous CNTs (carbon nanotubes) have been innovatively synthesized by an in-situ hydrothermal reaction strategy. This UiO-67@CNT impressively retains structural integrity whether contacted with strong acid, distilled water, and strong alkali conditions even for 20 days. Due to existence of CNT, its heat stability can reach up to 480 °C, which is superior to that of UiO-67. Open Zr(IV) sites, mesoporous, and high surface area in the structure of UiO-67@CNTs play associative effects for CR capture ability. CR uptakes over (5.0)UiO-67@CNTs can reach 1,024 mg/g, exceeding some other previous adsorbents in literature. Importantly, UiO-67@CNTs could retain a remarkable CR capture ability even after the fifth cycle. This work expands views for water-heat resistant MOF-based composite with excellent ability of CR capture.

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Improved OER catalytic performance of NiFe-LDH with hydrothermal carbonization microspheres

Liu

Yang

Zhang

et al. 2023

Journal of Alloys and Compounds

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Composites derived from synthetic clay and carbon sphere: Preparation, characterization, and application for dye decontamination

Cited by 7 publications

References 38 publications

Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

Efficient Removal of Congo Red, Methylene Blue and Pb(II) by Hydrochar–MgAlLDH Nanocomposite: Synthesis, Performance and Mechanism

Well-design and synthesis of a water- and heat-resistant UiO-67@CNTs composite for Congo red efficient capture

Improved OER catalytic performance of NiFe-LDH with hydrothermal carbonization microspheres

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