Removal of pollutants from wastewater using alumina based nanomaterials: A review

Mahesh, Ramakrishna; Vora, Khushi; Hanumanthaiah, Madhu; Shroff, Anuradha; Kulkarni, Pavan; Makuteswaran, Sridharan; Ramdas, Suresh; Ramachandraih, Hemanth Lakshmipura; Raghu, Anjanapura Venkatarmanaiah

doi:10.1007/s11814-023-1419-x

Cited by 19 publications

(2 citation statements)

References 77 publications

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“…[8] An alternative that is gaining relevance is the application of photocatalysts that are not considered semiconductors, but they have demonstrated the ability to photodegrade emerging substances and contaminants. Such examples include materials such as MOFs, [9] alumina, [10] zeolites, [11] and some simple and mixed metal oxides. [12] Within this group of materials, layered double hydroxides have increased in relevance in recent years for use as photocatalysts for the degradation of organic compounds.…”

Section: Introductionmentioning

confidence: 99%

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Portillo‐Vélez,

Velásquez‐Torres,

Pérez‐Hernández

et al. 2024

ChemistrySelect

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Two different hydrotalcites Zn/Al and Zn/Al−Co were prepared for the photodegradation of phenol under UV radiation. These materials were synthesized using the co‐precipitation method and characterized through powder X‐ray diffraction (PXRD), UV‐vis spectroscopy, FTIR spectroscopy, X‐ray photoelectron spectroscopy (XPS) and nitrogen physisorption. The physicochemical characterization results indicated that Zn/Al−Co, which incorporates cobalt atoms, did not affect the hydrotalcite structure (layered double hydroxide). However, the specific area was reduced, and the calcination process favoured the creation of surface defects, consequently increasing the adsorption of oxygen species. The calcined Zn/Al−Co(0.3) hydrotalcite exhibited the highest phenol photocatalytic degradation (68 %) and mineralization (52 %) achieved via a mechanism involving superoxide radicals.

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Section: Introductionmentioning

confidence: 99%

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Portillo‐Vélez,

Velásquez‐Torres,

Pérez‐Hernández

et al. 2024

ChemistrySelect

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show abstract

“…A number of studies have been reported by various authors for dye adsorption by using several adsorbents. Animal or plant-based activated charcoal such as rice husk, 16 coir pith, 17 bamboo, 18 sawdust, 19 agricultural wastes, 20 wood, 21 collagen, 22 bone, 23 and petroleum pitch, 24 inorganic adsorbents namely lignite, 25 zeolite, 26 and silica molecular sieves, 27 biopolymers, 28 and nano metal oxides [29][30][31][32][33] are the widely studied adsorbent materials. Carbon nanotubes (CNTs) possess unique structures and physical properties which makes them a promising candidate for the adsorption of dyes from industrial effluents.…”

Section: Introductionmentioning

confidence: 99%

Magnetized CNTs incorporated MBA cross‐linked guar gum nano‐composite for methylene blue dye removal

Sayana,

Prajwal,

Deeksha

et al. 2023

J of Applied Polymer Sci

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In the present work, a magnetized multiwalled carbon nanotube dispersed in chemically cross‐linked gaur gum was developed as a nano‐composite adsorbent material for the removal of dye from wastewater. The gaur gum, a bio‐macromolecule was chemically modified by cross‐linking with methylene bis‐acrylamide in the presence of sodium hydroxide as a novel approach to prepare the gel matrix. The magnetite nanoparticles loaded multiwalled carbon nanotubes were dispersed in methylene bis‐acrylamide cross‐linked gaur gum gel during gelation. The nano‐composite was characterized for morphological, spectral, and analytical data. The solid form of the nano‐composite was evaluated as an adsorbent material for the treatment of water containing methylene blue dye molecules as pollutants by the spectrophotometric method. Adsorption isotherm studies suggested that the Freundlich model was the befitting model for adsorption, indicating the multilayered adsorption and the kinetic study revealed the adsorption to occur by a pseudo‐second‐order kinetic process. The novel nano‐composite is found to be a promising material for the adsorptive removal of dye molecules from dye‐contaminated wastewater. The adsorption capacity was observed to be 11 mg/g of the material.

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Pulse-electrodeposited Ni/W-Al2O3 nanocomposites at different current densities

Xia,

Yan,

et al. 2023

J Nanopart Res

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Removal of pollutants from wastewater using alumina based nanomaterials: A review

Cited by 19 publications

References 77 publications

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Magnetized CNTs incorporated MBA cross‐linked guar gum nano‐composite for methylene blue dye removal

Pulse-electrodeposited Ni/W-Al2O3 nanocomposites at different current densities

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