Facile synthesis, physico-chemical studies of Ocimum sanctum magnetic nanocomposite and its adsorptive application against Methylene blue

Sharma, Atul; Mangla, Divyanshi; Choudhry, Arshi; Sajid, Md.; Chaudhry, Saif Ali

doi:10.1016/j.molliq.2022.119752

Cited by 55 publications

(10 citation statements)

References 83 publications

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“…To study the adsorption kinetic and isotherm 0.05 g of adsorbent was immersed in DC aqueous solutions with initial concentrations (25-100 mg L −1 ). The pH effect on the removal of DC has been examined at an initial concentration of 50 mg L −1 at pH (3)(4)(5)(6)(7)(8)(9)(10)(11) and 25 °C. The pH of the system was adjusted by adding small volumes of HCl or NaOH solutions (Crison pH meter, pH meter, pH 25).…”

Section: Phytosynthesis Of Nzvimentioning

confidence: 99%

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Abdelfatah

El-Maghrabi

Mahmoud

et al. 2022

Sci Rep

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In this work, the synthesis of an rGO/nZVI composite was achieved for the first time using a simple and green procedure via Atriplex halimus leaves extract as a reducing and stabilizing agent to uphold the green chemistry principles such as less hazardous chemical synthesis. Several tools have been used to confirm the successful synthesis of the composite such as SEM, EDX, XPS, XRD, FTIR, and zeta potential which indicated the successful fabrication of the composite. The novel composite was compared with pristine nZVI for the removal aptitude of a doxycycline antibiotic with different initial concentrations to study the synergistic effect between rGO and nZVI. The adsorptive removal of bare nZVI was 90% using the removal conditions of 25 mg L−1, 25 °C, and 0.05 g, whereas the adsorptive removal of doxycycline by the rGO/nZVI composite reached 94.6% confirming the synergistic effect between nZVI and rGO. The adsorption process followed the pseudo-second order and was well-fitted to Freundlich models with a maximum adsorption capacity of 31.61 mg g−1 at 25 °C and pH 7. A plausible mechanism for the removal of DC was suggested. Besides, the reusability of the rGO/nZVI composite was confirmed by having an efficacy of 60% after six successive cycles of regeneration.

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Section: Phytosynthesis Of Nzvimentioning

confidence: 99%

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Abdelfatah

El-Maghrabi

Mahmoud

et al. 2022

Sci Rep

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“…However,it requires slight alterations to get significant results to eliminate the dyes specifically MB and CV. In a recently published work, the application of Ocimum sanctum‐Iron oxide (OSIO) nanocomposite has been reported for the sequestration of Methylene blue dye with a maximum adsorption capacity of 31.25 mg/g [17] . The present study is an advancement of the previous work where the synthesized material synthesised is economical and utilised against two harmful dyes CV and MB with higher adsorption capacities.…”

Section: Introductionmentioning

confidence: 69%

“…In a recently published work, the application of Ocimum sanctum-Iron oxide (OSIO) nanocomposite has been reported for the sequestration of Methylene blue dye with a maximum adsorption capacity of 31.25 mg/g. [17] The present study is an advancement of the previous work where the synthesized material synthesised is economical and utilised against two harmful dyes CV and MB with higher adsorption capacities. Some researchers, for example, Qi et al,2016, presented a simple and universal method for determining water content stability of MOF with multicarboxylate and divalent metal ligands centres, while simultaneously acquiring size and shapecontrolled MOFs materials.…”

Section: Introductionmentioning

confidence: 89%

Cobalt Ferrite Incorporated Ocimum sanctum Nanocomposite Matrix as an Interface for Adsorption of Organic Dyes: A Sustainable Alternative

et al. 2023

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The preparation of Cobalt ferrite-Ocimum sanctum nanocomposite, referred to as CoFe 2 O 4 /OS, has been reported along with its application for the treatment of water containing hazardous organic contaminants. A simple co-precipitation approach was applied for synthesis of magnetic nanocomposite, and a thorough analysis for its characterization was conducted using several spectroscopic and microscopic techniques. The characterization results showed that the magnetic nanocomposite exhibited substantial functional groups of Ocimum sanctum powder and magnetic ferrite part. The adsorption investigation of nanocomposite for removal of two cationic dyes was carried out with varying parameters, such as pH, contact time, temperature, concentration, and composite dosage. The sorption process was proved feasible and exothermic at the tested temperatures (303-323 K). The sorption data followed Freundlich and Temkin isotherms which recommended the physisorption progression. The kinetic study revealed a pseudo-second order rate of sorption process for both dye molecules. The facile preparation, economical cost, significant magnetic character, and high sorption capacity will surely construct the water treatment system more competent with the use of CoFe 2 O 4 /OS.

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“…Figure 9 shows the effect of pH on the removal of dyes. [42][43][44] It was observed that the dye's removal efficiency increased gradually as the pH of the solution increased and reached maximum at pH 7 before decreasing further. The maximum removal percent at pH 7 for MG and MB was 91.4 %, 93.6 % respectively.…”

Section: Effect Of Phmentioning

confidence: 99%

A Sustainable Approach for Enhancing Cationic Dyes Adsorption in Single and Multiple Systems using Novel Nano Ferrites Modified with Walnut Shell

Jasrotia,

Singh,

Sharma

et al. 2024

ChemistrySelect

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Walnut shell has been used in various experimental studies for different dyes removal, but it is exciting to study the adsorption behaviour of bio‐waste (walnut shell) in combination with spinel zinc ferrite which resulted in the formation of a novel material having magnetic properties and help in easy separation after the wastewater treatment. Novel magnetic walnut shell zinc ferrite (WSZF) composite has been synthesized and used to remove Malachite Green and Methylene Blue from aqueous solution in single and binary dye systems. Different techniques have been used to characterize the composite such as Fourier Transform Infrared Spectroscopy, X‐Ray Diffraction, Field Emission Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Thermogravimetric Analysis and pHzpc. Adsorption of dyes were studied to see the effect of time, pH, adsorbent dose, dye concentration and temperature. The Lagergren pseudo second order model fitted well among various kinetic models employed. Langmuir adsorption isotherm best fitted with maximum adsorption capacities of 86.20 and 169.5 mg/g in single dye and 23.92 and 18 mg/g respectively in binary dye system for Malachite Green and Methylene Blue. Process was spontaneous and ΔH° were found positive, confirmed endothermic process of adsorption. The composite‘s regeneration capacity was studied for five cycles and at the end of five cycle the efficiency of the material was found to be around 80 % for both single as well as binary dye systems. It is concluded that the chosen WSZF will be the optimum solution for cationic dyes removal.

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Facile synthesis, physico-chemical studies of Ocimum sanctum magnetic nanocomposite and its adsorptive application against Methylene blue

Cited by 55 publications

References 83 publications

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Synergetic effect of green synthesized reduced graphene oxide and nano-zero valent iron composite for the removal of doxycycline antibiotic from water

Cobalt Ferrite Incorporated Ocimum sanctum Nanocomposite Matrix as an Interface for Adsorption of Organic Dyes: A Sustainable Alternative

A Sustainable Approach for Enhancing Cationic Dyes Adsorption in Single and Multiple Systems using Novel Nano Ferrites Modified with Walnut Shell

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