Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

Ikram, Muhammad; Khalid, Ayesha; Shahzadi, Anum; Haider, Ali; Naz, Sadia; Naz, Misbah; Shahzadi, Iram; Ul‐Hamid, Anwar; Haider, Junaid; Nabgan, Walid; Butt, Arif Nazir

doi:10.1021/acsomega.2c02732

Cited by 19 publications

(1 citation statement)

References 66 publications

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“…Other reported works have confirmed closely related  max (𝐶𝑎𝑂−𝑁𝑃𝑆) and 𝐸 𝐵𝐺 (𝐶𝑎𝑂−𝑁𝑃𝑆) for CaO-NPS (Gandhi et al, 2021;Ikram et al, 2022).…”

Section: Characterization Of Adsorbentsupporting

confidence: 70%

Application of periwinkle shell for the synthesis of calcium oxide nanoparticles and in the remediation of Pb2+-contaminated water

Eddy,

Garg,

Ukpe

et al. 2024

Biomass Conv. Bioref.

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The recovery of CaCO3 from periwinkle shells as a precursor for the synthesis of CaO nanoparticles is validated in this work. The sol-gel synthesized CaO nanoparticles were characterized by XRD, FT-IR, UV visible spectrophotometer, SEM, BET and ICP instrumentation. Information obtained from the characterization showed that the material has a band gap of 4.12 eV, porosity in the mesoporous range (average pore size of 3.02 nm), crystalline size of 18 nm, BET surface area and pore volume of 220.11 m 2 /g and 8.43 cc/g respectively. The application of the nanoparticles for the separation of lead (II) from aqueous solution yielded results that indicated a strong dependency of the adsorption efficiency on decreasing temperature but increasing pH (up to 6.5), initial concentration of Pb 2+ , adsorbent dosage and period of contact.The interaction of concentration, time, temperature and adsorbent dosage indicated that optimum efficiency greater than 80% can be obtained at a temperature of 318 K, concentration of 250 ppm, an adsorbent dosage of 0.5 g and contact period of 75 minutes. Enhanced removal capacities (reaching almost 100% efficiency) were obtained under UV-activated adsorption experiments. The adsorbent showed an excellent ability to favourably adjust the pH, dissolved oxygen, alkalinity and conductivity of the contaminated water. It also displayed an appreciable tendency towards reusability and the total recovery of the adsorbed heavy metal ions from its surface. The pseudofirst-order kinetic, liquid film diffusion, Freundlich, Halsey and Elovich adsorption isotherms best fitted the adsorption process and confirmed the multimolecular adsorption layer with physical adsorption profile. Also, the adsorption of the heavy metal ions is limited by liquid film diffusion and supported surface heterogeneity and physical adsorption mechanism.

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Section: Characterization Of Adsorbentsupporting

confidence: 70%

Application of periwinkle shell for the synthesis of calcium oxide nanoparticles and in the remediation of Pb2+-contaminated water

Eddy,

Garg,

Ukpe

et al. 2024

Biomass Conv. Bioref.

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Phytoextract-mediated cellulose/CeO2 nanocomposite for antibacterial and photocatalytic activity

Pushpalatha,

Arularasu,

Palanivel

et al. 2023

Biomass Conv. Bioref.

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Heterojunction CuO thin coated CaO drived from eggshell waste for fast removal of organic pollutants from water under visible light

Ali Ahmed,

Hattab,

Berredjem

et al. 2024

Int. J. Environ. Sci. Technol.

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The conversion of food and agro-industrial wastes to produce useful products is one of the goals of economic and sustainable development, as also evidenced in the 2030 Agenda for Sustainable Development, adopted by all United Nations Member States in 2015. This work aims to study the transformation of CaCO3 based eggshell waste (ES) into a face centered cubic oxide form (namely, CaO), followed by CuO coating to be used as photocatalytic material (ES@CuO) for fast removal of basic fuchsin (BF) dye from water under visible light. Different ES@CuO samples with different CuO amounts (2.5, 5 and 10%, respectively) and calcined at different temperatures (600, 800, and 1000 °C) were prepared by hydrothermal method. Samples with CuO from medium to high amounts (5 and 10%) demonstrated excellent photocatalytic activity, as compared to low CuO amount (2.5%). In addition, the samples calcined at higher temperature (800 and 1000 °C) exhibited superior degradation rates, reaching 88.11% and 88.33%, respectively. The effect of operating parameters was investigated to understand the behavior of ES@CuO under different conditions. ES@CuO shows rapid removal of BF which combines adsorption and photooxidation, wherein the removal rate reaches up 99% for a BF dye concentration of 100 ppm within 30 min using 75 mg/L of ES@CuO5%. ES@CuO exhibits superior adsorption ability and excellent photoproduced charges transfer which provide synergistic effects to boost the quick removal of dye from water. The finding of this investigation encourages valorizing food wastes into sustainable materials for water remediation. Graphical abstract

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Enhanced Photocatalytic Degradation with Sustainable CaO Nanorods Doped with Ce and Cellulose Nanocrystals: In Silico Molecular Docking Studies

Cited by 19 publications

References 66 publications

Application of periwinkle shell for the synthesis of calcium oxide nanoparticles and in the remediation of Pb2+-contaminated water

Application of periwinkle shell for the synthesis of calcium oxide nanoparticles and in the remediation of Pb2+-contaminated water

Phytoextract-mediated cellulose/CeO2 nanocomposite for antibacterial and photocatalytic activity

Heterojunction CuO thin coated CaO drived from eggshell waste for fast removal of organic pollutants from water under visible light

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