Graphene oxide decorated with cellulose and copper nanoparticle as an efficient adsorbent for the removal of malachite green

Khawaja, Heena; Zahir, Erum; Asghar, Muhammad Asif; Asghar, Muhammad Arif

doi:10.1016/j.ijbiomac.2020.11.137

Cited by 72 publications

(11 citation statements)

References 79 publications

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“…From Table 3, it was indicated that the best correlation coefficients R 2 > 0.99 were common for activated carbon, ATMa clay, and GM, were given by the Langmuir model. This result confirms that the drug molecules adsorb in a monolayer on the adsorbent surfaces with homogeneity [170,171], the maximum adsorption capacity (q m ) as a fitting model parameter was 156.25, 75.18, 9.68 mg • g -1 , for activated carbon, GM, and ATMa, respectively. It was in a close agreement with the measured data (157.24, 75.5, 9.65 mg • g -1 ), and 0 < R L < 1 which indicates that the adsorption isotherm is favourable.…”

Section: Adsorption Isotherm Modelssupporting

confidence: 76%

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Hamoudi

Hamdi

Brendlé

2021

Ecological Chemistry and Engineering S

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The use of antibiotics for breeding and for humans increased considerably in recent years, as a dietary supplement to enhance animal growth. This frequent use leads to the detection of residues in water and wastewater. Thus, the emergence of new strains of bacteria resistant to these antibiotics and, can lead to incurable diseases of livestock, and can lead to a possible transmission of these strains to humans. The purpose of this work is to develop new materials based on treated Maghnia clay, activated carbon, cement, and PVA polymer, named geomaterials. These materials were intended for the containment of hazardous wastes in landfills. The removal of tetracycline from aqueous solution was tested by adsorption onto synthesised geomaterials and their mineral constituents. Adsorption kinetics revealed that tetracycline was rapidly retained by GM and ATMa. This was confirmed by the relatively short equilibrium time of 30 min. The pseudo-second-order and intraparticle models well fitted the adsorption kinetic of the TC-adsorbent studied systems. It was noticed that the adsorption kinetic passes through several mechanisms, was demonstrated by the multi-linearity on the plot of qt against the square root of t. The adsorption capacity (Qa ) of TC onto GM is pH-dependent. Indeed, Qa reaches a maximum value (Qa = 12.58 mg ∙ g–1 at a very acidic pH of 2, then the adsorbed amount decreases to reach a minimum value at pH of 8, and for basic pHsQa increases up to 10 mg ∙ g–1.

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Section: Adsorption Isotherm Modelssupporting

confidence: 76%

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Hamoudi

Hamdi

Brendlé

2021

Ecological Chemistry and Engineering S

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“…Previously, it was observed that the incorporation of metal NPs into the polymer matrix could improve the performance of synthesized nanocomposite at a lower cost. [11][12][13] Silverbased nanocomposites have been synthesized after functionalization with a variety of cellulose containing polymers like chitosan, gelatin, polyacrylic acid, and guar gum. [14][15][16][17][18][19][20][21] Nanocomposites are now widely used in various applications including automotive, packaging, aerospace, electronics, defense, semiconductors, energy, coatings, sports, medical, and healthcare.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis and Characterization of Carboxymethyl Cellulose Fabricated Silver-Based Nanocomposite for Various Therapeutic Applications

Asghar

Yousuf

Shoaib

et al. 2021

IJN

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Purpose The current study proposed the simple, eco-friendly and cost-effective synthesis of carboxymethyl cellulose (CMC) structured silver-based nanocomposite (CMC-AgNPs) using Syzygium aromaticum buds extract. Methods The CMC-AgNPs were characterized by ultraviolet (UV) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transmission infra-red (FTIR), energy-dispersive X-ray (EDX), and dynamic light scattering (DLS) techniques. The synthesized nanocomposites were evaluated for their bactericidal kinetics, in-vivo anti-inflammatory, anti-leishmaniasis, antioxidant and cytotoxic activities using different in-vitro and in-vivo models. Results The spherical shape nanocomposite of CMC-AgNPs was synthesized with the mean size range of 20–30 nm, and the average pore diameter is 18.2 nm while the mean zeta potential of −31.6 ± 3.64 mV. The highly significant (P < 0.005) antibacterial activity was found against six bacterial strains with the ZIs of 24.6 to 27.9 mm. More drop counts were observed in Gram-negative strains after 10 min exposure with CMC-AgNPs. Significant damage in bacterial cell membrane was also observed in atomic force microscopy (AFM) after treated with CMC-AgNPs. Nanocomposite showed highly significant anti-inflammatory activity in cotton pellet induced granuloma model (Phase I) in rats with the mean inhibitions of 43.13% and 48.68% at the doses of 0.025 and 0.05 mg/kg, respectively, when compared to control. Reduction in rat paw edema (Phase II) was also highly significant (0.025 mg/kg; 42.39%; 0.05 mg/kg, 47.82%). At dose of 0.05 mg/kg, CMC-AgNPs caused highly significant decrease in leukocyte counts (922 ± 83), levels of CRP (8.4 ± 0.73 mg/mL), IL-1 (177.4 ± 21.3 pg/mL), IL-2 (83.7 ± 11.5 pg/mL), IL-6 (83.7 ± 11.5 pg/mL) and TNF-α (18.3 ± 5.3 pg/mL) as compared to control group. CMC-AgNPs produced highly effective anti-leishmaniasis activity with the viable Leishmania major counts decreased up to 36.7% within 24 h, and the IC 50 was found to be 28.41 μg/mL. The potent DPPH radical scavenging potential was also observed for CMC-AgNPs with the IC 50 value of 112 μg/mL. Furthermore, the cytotoxicity was assessed using HeLa cell lines with the LC 50 of 108.2 μg/mL. Conclusion The current findings demonstrate positive attributes of CMC fabricated AgNPs as a promising antibacterial, anti-inflammatory, anti-leishmaniasis, and antioxidant agent with low cytotoxic potential.

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“…From figure 9, it can be seen that the increment of the Ag/GO content had a different effect on the absorbance of the treated medium. For example, when the percentage of the Ag/GO sample increased from 12.5% to 100%, the absorbance of the E. coli medium decreased first and then increased [34]. However, for the S. aureus medium, the corresponding values decreased rapidly at the 12.5% percentage of Ag/GO and were inclined to be placid beyond 12.5%.…”

Section: Morphology Analysis Of Silver/graphene Oxidementioning

confidence: 96%

Rapid synthesis and characterization of silver-loaded graphene oxide nanomaterials and their antibacterial applications

Zhu

et al. 2021

R. Soc. open sci.

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With the promising potential application of Ag/graphene-based nanomaterials in medicine and engineering materials, the large-scale production has attracted great interest of researchers on the basis of green synthesis. In this study, water-soluble silver/graphene oxide (Ag/GO) nanomaterials were synthesized under ultrasound-assisted conditions. The structural characteristics of Ag/GO were confirmed by Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, scanning electron microscopy and energy dispersion spectroscopy, respectively. The results showed the silver particles (AgNPs) obtained by reduction were attached to the surface of GO, and there was a strong interaction between AgNPs and GO. The antibacterial activity was primarily evaluated by the plate method and hole punching method. Antibacterial tests indicated that Ag/GO could inhibit the growth of Gram-negative and Gram-positive bacteria, special for the Staphylococcus aureus .

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Graphene oxide decorated with cellulose and copper nanoparticle as an efficient adsorbent for the removal of malachite green

Cited by 72 publications

References 79 publications

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Tetracycline Removal from Water by Adsorption on Geomaterial, Activated Carbon and Clay Adsorbents

Green Synthesis and Characterization of Carboxymethyl Cellulose Fabricated Silver-Based Nanocomposite for Various Therapeutic Applications

Rapid synthesis and characterization of silver-loaded graphene oxide nanomaterials and their antibacterial applications

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