Adsorption of polluted dyes from water by transition metal oxides: A review

Hosny, Nasser Mohammed; Gomaa, Islam; Elmahgary, Maryam G.

doi:10.1016/j.apsadv.2023.100395

Cited by 81 publications

(19 citation statements)

References 97 publications

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“…Due to their large surface area and potent physical and chemical influences on the adsorption of dye effluents, metal oxide nanoparticles have been widely exploited as adsorbents toward synthetic dyes from wastewater in the last few decades. 21,22 Nickel oxide (NiO) is an important transition-metal oxide widely used in various applications such as solar cells, 23 energy storage systems, 24 and catalysis 25 due to its high chemical and thermal stability, and eco-friendly nature. For wastewater treatment, NiO is also widely used as an adsorbent for synthetic dyes.…”

Section: Introductionmentioning

confidence: 99%

Removal of methyl red from wastewater using a NiO@Hyphaene thebaicaseed-derived porous carbon adsorbent: kinetics and isotherm studies

Ahmed,

Sanad,

Kotb

et al. 2023

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

Removal of methyl red from wastewater using a NiO@Hyphaene thebaicaseed-derived porous carbon adsorbent: kinetics and isotherm studies

Ahmed,

Sanad,

Kotb

et al. 2023

Mater. Adv.

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“…This is due to the enormous surface area and strong physical and chemical influences on the adsorption of dye effluents. Metal oxides have been extensively used as promising adsorbents to eliminate synthetic dyes from wastewater 14 . Zinc oxide nanoparticles (ZnO NPs) widely utilized in solar cells 15 , energy storage 16 , and gas sensors 17 .…”

Section: Introductionmentioning

confidence: 99%

ZnO@ activated carbon derived from wood sawdust as adsorbent for removal of methyl red and methyl orange from aqueous solutions

Sayed,

Ahmed,

Abdallah

et al. 2024

Sci Rep

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Activated carbon (AC) and ZnO@AC composite derived from wood sawdust were prepared to be utilized as adsorbents for methyl red (MR) and methyl orange (MO) anionic dyes from the aqueous solutions. The maximum adsorption capacity of the AC and ZnO@AC composite toward both dyes was achieved in the strong acidic medium (pH = 3), and under stirring for 60 min. The kinetic studies revealed that the adsorption of MR and MO dyes onto the AC and ZnO@AC composite fitted well with the pseudo-second-order model. Furthermore, the intraparticle diffusion and Elovich kinetic models confirmed the adsorption is controlled by external surfaces, and the adsorption is chemisorption process. The isotherm results indicated that the MR and MO dye adsorption occurred via monolayer adsorption, and the estimated maximum adsorption capacities of both dyes onto the ZnO@AC composite were higher than those achieved by AC. Thermodynamic analysis suggested that the adsorption is endothermic and spontaneous. The mechanism for MR, and MO dyes adsorption onto the AC and ZnO@AC composite is proposed to be controlled by electrostatic bonding, π–π interactions, and ion exchange, while H-bonding and n–π interactions were minor contributors. This study reveals the potential use of carbon-based adsorbents derived from wood sawdust for the removal of anionic dyes from wastewater.

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“…The removal of color compounds from aqueous systems has a substantial challenge and are a matter of utmost urgency. The efficacy of conventional techniques for the removal of color compounds from wastewater has been constrained by the development of detrimental derivatives, reliance on biochemical agents, and significant expenses 4 . The use of green nanoparticles (NPs) for color compound remediation has gathered considerable attention in recent times due to their environment ‐ friendly, reduced toxicity, ability to maintain stability under light exposure, and cost‐effectiveness 5…”

Section: Introductionmentioning

confidence: 99%

Synthesis of chitosan and gum arabic functionalized silver nanocomposite for efficient removal of methylene blue and antibacterial activity

Bharathi,

Wadaan,

Mythili

et al. 2024

Polymers for Advanced Techs

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The discharge of industrial effluent has a harmful effect on the aquatic ecosystems and surrounding environment. The unprocessed discharge of organic dyes into the aquatic environment is a significant contributor to the aquatic pollution. Hence, it is imperative to ensure the proper disposal of organic colorants and their derivatives before their discharge into wastewater. The present study aimed to synthesis silver (Ag) nanocomposite using gum arabic (GA) and chitosan (CS) by an environment‐friendly and sustainable method. The formulated Ag nanocomposite was characterized using UV–visible, FTIR, TEM coupled with EDS. The FTIR analysis demonstrated the existence of polymers that have a crucial role in the formation of nano‐Ag‐composite. TEM revealed that the synthesized Ag nanocomposite had a spherical nanostructure, with diameters ranging from 18 to 95 nm. Further studies were conducted on Ag nanocomposite to analyze the breakdown of Methylene Blue (MB) under visible light irradiation. The synthesized Ag nanocomposite demonstrated a removal efficiency of 93.3% for MB after 60 min. Furthermore, the reusability of the Ag nanocomposite was studied, and it demonstrated substantial photocatalytic activity after three consecutive cycles. In addition, Ag nanocomposite (100 μg/mL) demonstrated potential inhibition against Escherichia coli (20 mm) and Staphylococcus aureus (18 mm). Finally, our findings showed that the synthesized nanocomposite can be employed as an outstanding photocatalyst and also bactericidal agent in both industrial and clinical sectors.

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Adsorption of polluted dyes from water by transition metal oxides: A review

Cited by 81 publications

References 97 publications

Removal of methyl red from wastewater using a NiO@Hyphaene thebaicaseed-derived porous carbon adsorbent: kinetics and isotherm studies

Removal of methyl red from wastewater using a NiO@Hyphaene thebaicaseed-derived porous carbon adsorbent: kinetics and isotherm studies

ZnO@ activated carbon derived from wood sawdust as adsorbent for removal of methyl red and methyl orange from aqueous solutions

Synthesis of chitosan and gum arabic functionalized silver nanocomposite for efficient removal of methylene blue and antibacterial activity

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