Utilization of Ag2O–Al2O3–ZrO2 decorated onto rGO as adsorbent for the removal of Congo red from aqueous solution

Sharma, Gaurav; AlGarni, Tahani Saad; Kumar, P. Senthil; Bhogal, Sangeeta; Kumar, Amit; Sharma, Shweta; Naushad, Mu.; ALOthman, Zeid A.; Stadler, Florian J.

doi:10.1016/j.envres.2021.111179

Cited by 45 publications

(8 citation statements)

References 58 publications

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“…20 With further increase in adsorbent dose to 2.5 gdm -3 , the equilibrium removal percent was found to remain constant. Similar observation was reported by Sharma et al 21…”

Section: Effect Of Adsorbent Dosesupporting

confidence: 91%

Study of Isotherm and Kinetics for Remediation of Congo Red Using Nanocomposite Bead

Sarkar

Sarkar²,

Santra³

et al. 2022

Fine Chemical Engineering

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Cellulose-based nanocomposite (FeCNB) has been synthesized via sol-gel conversion for adsorptive remediation of Congo red, a carcinogenic and mutagenic azo dye, from water. The bead was characterized by Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDAX) and transmission electron microscopy (TEM). The effect of adsorbent dose, pH, contact time, shaking speed, initial dye concentration and temperature was carried out in a batch adsorption study. The maximum removal of Congo red was found at pH 6.0, corresponding to the adsorbent dose of 1.0 gdm-3 and 90 min of contact time. The experimental data were analyzed using different isotherm and kinetic models. The data was fitted best to Langmuir isotherm model and pseudo-second-order kinetic model. The maximum adsorption capacity evaluated from Langmuir isotherm is 3.52 mgg-1 at 303 K. Thermodynamic study was carried out to evaluate the changes in Gibbs free energy (ΔG0 ), enthalpy (ΔH0 ) and entropy (ΔS0 ) of the dye-adsorbent interaction. The negative ΔG0 values at all temperatures suggested the spontaneous nature; the positive ΔH0 value indicated the endothermic nature and the positive ΔS0 indicated the increased randomness of the adsorption process. Desorption study found 0.1 (M) NaOH as the most suitable eluting agent for dye-loaded adsorbent. The adsorbent can be used up to five successive cycles of adsorption-desorption.

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“…20 With further increase in adsorbent dose to 2.5 gdm -3 , the equilibrium removal percent was found to remain constant. Similar observation was reported by Sharma et al 21…”

Section: Effect Of Adsorbent Dosesupporting

confidence: 91%

Study of Isotherm and Kinetics for Remediation of Congo Red Using Nanocomposite Bead

Sarkar

Sarkar²,

Santra³

et al. 2022

Fine Chemical Engineering

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“…8,9 In practice, adsorption is the preferred approach among the available methods owing to its high efficiency and environmental sustainability as well as low cost and energy consumption. [10][11][12][13][14] To date, great efforts have been made in the design of highly efficient and recyclable adsorbents to eliminate dyes, among which graphene oxide and its derivatives, [15][16][17] carbonaceous materials, 18 aerogels, 19 biopolymers, 20 alginates, 21 nanofibers 22 and nanoporous structures 23 have been widely utilized. Among these materials, metal-organic frameworks (MOFs) have been studied more widely.…”

Section: Introductionmentioning

confidence: 99%

Magnetically recyclable core–shell MOF nanoparticles of Fe₃O₄@PDA@UIO-66-NH₂ grafted by organic acids for intensified cationic dye adsorption

Lou

et al. 2022

New J. Chem.

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“…Compared with Ag-Cr NPs, its O content was significantly increased by 2.46 folds, while its Cr and Ag contents were correspondingly decreased (Figure S5, Supporting Information). The high-resolution O 1s spectrum displayed three characteristic peaks at 531.03, 532.13, and 534.68 eV (Figure 4Cd), corresponding to lattice oxygen atoms in Ag 2 O, [87] surface hydroxyl groups, [88] and oxygen atoms in water molecules, [89] respectively. The high-resolution Ag 3d spectrum had two strong peaks at binding energies of 367.18 and 373.18 eV (Figure 4Ce), which can be deconvoluted to Ag 3d 5/2 and Ag 3d 3/2 and attributed to AgCl or Ag 2 O .…”

Section: Quantitative Detection Of Clo − By Ag-cr Nps and Characteriz...mentioning

confidence: 99%

Sequential‐Dependent Synthesis of Bimetallic Silver‐Chromium Nanoparticles for Multichannel Sensing, Logic Computing, and 3 in 1 Information Protection

Liu

et al. 2023

Small

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Bimetallic nanomaterials (BNMs) have been used in sensing, biomedicine, and environmental remediation, but their multipurpose and comprehensive applications in molecular logic computing and information security protection have received little attention. Herein, This synthesis method is achieved by sequentially adding reactants under ice bath conditions. Interestingly, Ag‐Cr NPs can dynamically selectively sense anions and reductants in multiple channels. Especially, ClO− can be quantitatively detected by oxidizing Ag‐Cr NPs with detection limits of 98.37 nM (at 270 nm) and 31.83 nM (at 394 nm). Based on sequential‐dependent synthesis process of Ag‐Cr NPs, Boolean logic gates and customizable molecular keypad locks are constructed by setting the reactants as the inputs, the states of the resulting solutions as the outputs. Furthermore, dynamically selective response patterns of the Ag‐Cr NPs can be converted into binary strings to exploit molecular crypto‐steganography to encode, store, and hide information. By integrating the three dimensions of authorization, encryption, and steganography, 3 in 1 advanced information protection based on Ag‐Cr nanosensing system can be achieved, which can enhance the anti‐cracking ability of information. This research will promote the development and application of nanocomposites in the field of information security and deepen the connection between molecular sensing and the information world.

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Utilization of Ag2O–Al2O3–ZrO2 decorated onto rGO as adsorbent for the removal of Congo red from aqueous solution

Cited by 45 publications

References 58 publications

Study of Isotherm and Kinetics for Remediation of Congo Red Using Nanocomposite Bead

Study of Isotherm and Kinetics for Remediation of Congo Red Using Nanocomposite Bead

Magnetically recyclable core–shell MOF nanoparticles of Fe₃O₄@PDA@UIO-66-NH₂ grafted by organic acids for intensified cationic dye adsorption

Sequential‐Dependent Synthesis of Bimetallic Silver‐Chromium Nanoparticles for Multichannel Sensing, Logic Computing, and 3 in 1 Information Protection

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Utilization of Ag2O–Al2O3–ZrO2 decorated onto rGO as adsorbent for the removal of Congo red from aqueous solution

Cited by 45 publications

References 58 publications

Study of Isotherm and Kinetics for Remediation of Congo Red Using Nanocomposite Bead

Study of Isotherm and Kinetics for Remediation of Congo Red Using Nanocomposite Bead

Magnetically recyclable core–shell MOF nanoparticles of Fe3O4@PDA@UIO-66-NH2 grafted by organic acids for intensified cationic dye adsorption

Sequential‐Dependent Synthesis of Bimetallic Silver‐Chromium Nanoparticles for Multichannel Sensing, Logic Computing, and 3 in 1 Information Protection

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Magnetically recyclable core–shell MOF nanoparticles of Fe₃O₄@PDA@UIO-66-NH₂ grafted by organic acids for intensified cationic dye adsorption