Application of zeolite based nanocomposites for wastewater remediation: Evaluating newer and environmentally benign approaches

Umejuru, Emmanuel Christopher; Mashifana, Tebogo; Kandjou, Vepika; Amani-Beni, Majid; Sadeghifar, Hasan; Fayazi, Mahsa; Karimi-Maleh, Hassan; Sithole, Thandiwe

doi:10.1016/j.envres.2023.116073

Cited by 28 publications

(9 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of zeolite-based materials as adsorbents and photocatalysts for the extraction of heavy metals and the degradation of a wide variety of dyes, pharmaceutical compounds like antibiotics, and other organic pollutants has been broadly discussed [1][2][3][4], highlighting the advantage of their use in the treatment of contaminated water. Zeolites offer a high surface area, nanoporous structure, strong acidity, high ion exchange ability and hydrothermal stability for the synthesis of highly efficient photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Co- and Ni-Doped TiO2 Nanoparticles Supported on Zeolite Y with Photocatalytic Properties

Petcu,

Papa,

Atkinson

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

Zeolite Y samples with microporous and hierarchical structures containing Ti–Ni and Ti–Co oxides were obtained as active photocatalysts. Different Ti amounts (5, 10% TiO2) were supported, followed by the loading of Ni or Co oxides (5%). X-ray diffraction evidenced the presence of TiO2 as an anatase. N2 adsorption–desorption results showed type IV isotherms for hierarchical zeolite Y samples, and a combination of type IV and I isotherms for zeolite Y samples. UV–Vis diffuse reflectance spectra showed a shift in the absorption band to visible with increasing Ti loading and especially after Co and Ni addition. A significant effect of the support was evidenced for Ti and its interaction with Co/Ni species. The zeolite Y support stabilized Ti in the 4+ oxidation state while hierarchical zeolite Y support favored the formation of Ti3+ species, Ni0 and Ni2+ and the oxidation of Co to 3+ oxidation state. Photocatalytic activity, under UV and visible light irradiation, was evaluated by the degradation of amoxicillin, used as a model test. The photocatalytic mechanism was investigated using ethanol, p-benzoquinone and KI as ·OH and ·O2− radicals and hole (h+) scavengers. The best results were obtained for the immobilized Ni-Ti species on the hierarchical zeolite Y support.

show abstract

Section: Introductionmentioning

confidence: 99%

Co- and Ni-Doped TiO2 Nanoparticles Supported on Zeolite Y with Photocatalytic Properties

Petcu,

Papa,

Atkinson

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…(Bhagat and Giri, 2021;S Biswas et al, 2021;Dong et al, 2021;Solanki et al, 2024;J Yang et al, 2019). These differences result in distinct characteristics in the structure of zeolite frameworks, enabling various industrial applications (Umejuru et al, 2023). For instance, zeolites with low silica content and a Si/Al ratio of 1, possess a larger number of cation exchange sites, leading to higher cation contents and exchange capacities.…”

Section: Zeolites Nanoparticlesmentioning

confidence: 99%

Nano-revolution in heavy metal removal: engineered nanomaterials for cleaner water

Karnwal,

Malik

2024

Front. Environ. Sci.

View full text Add to dashboard Cite

Engineered nanomaterials have emerged as a promising technology for water treatment, particularly for removing heavy metals. Their unique physicochemical properties enable them to adsorb large quantities of metals even at low concentrations. This review explores the efficacy of various nanomaterials, including zeolites, polymers, chitosan, metal oxides, and metals, in removing heavy metals from water under different conditions. Functionalization of nanomaterials is a strategy to enhance their separation, stability, and adsorption capacity. Experimental parameters such as pH, adsorbent dosage, temperature, contact time, and ionic strength significantly influence the adsorption process. In comparison, engineered nanomaterials show promise for heavy metal remediation, but several challenges exist, including aggregation, stability, mechanical strength, long-term performance, and scalability. Furthermore, the potential environmental and health impacts of nanomaterials require careful consideration. Future research should focus on addressing these challenges and developing sustainable nanomaterial-based remediation strategies. This will involve interdisciplinary collaboration, adherence to green chemistry principles, and comprehensive risk assessments to ensure the safe and effective deployment of nanomaterials in heavy metal remediation at both lab and large-scale levels.

show abstract

“…[26,27] These advanced zeolite materials are being prepared by different modifications of surface by functionalized nanoparticles for simultaneous and facile removal of heavy metals, organic pollutants and microorganisms from contaminated water. [28][29][30] Recently, zeolite core-shell particles with porous shell of ZnO Nano flakes have been reported which imparts photocatalytic, antibacterial properties and rapid adsorption of Pb(II) and methylene blue due to negatively charged surface. [31][32] In the present work, a core-shell composite adsorbent material has been designed by growing nano TiO 2 particles in multi layers over the surface of zeolite.…”

Section: Introductionmentioning

confidence: 99%

“…Zeolites have been extensively applied for waste water treatment as such and also in their modified forms [26,27] . These advanced zeolite materials are being prepared by different modifications of surface by functionalized nanoparticles for simultaneous and facile removal of heavy metals, organic pollutants and microorganisms from contaminated water [28–30] . Recently, zeolite core‐shell particles with porous shell of ZnO Nano flakes have been reported which imparts photocatalytic, antibacterial properties and rapid adsorption of Pb(II) and methylene blue due to negatively charged surface [31–32] …”

Section: Introductionmentioning

confidence: 99%

Preparation and Upscaling of Zeolite@TiO₂ Core‐shell for the Removal of Pb(II) and Methylene Blue Dye from Wastewater

Mittal,

Kant,

Goel

2023

ChemistrySelect

View full text Add to dashboard Cite

The present work reports the preparation and adsorption kinetics of a Zeolite@TiO2 multifunctional adsorbent for the removal of heavy metal (Pb(II)) and organic pollutants (methylene blue) from wastewater. The design of the material is a core‐shell having a porous core of zeolite and the surface is supported with the growth of nano TiO2 for a tunable surface and interface designing for efficient wastewater treatment. The formation of Zeolite@TiO2 core‐shell has been characterized by XRD, XPS, SEM, TEM, and DRS spectroscopic techniques. BET surface analysis indicated increased surface area for efficient adsorption. The design of multifunctional adsorbent acts as a charged crossing point for quick adsorption and breakdown of pollutants in water. The adsorption of Pb(II) and methylene blue (MB) dye follows the Freundlich adsorption isotherm confirming presence of multilayer of TiO2 in the adsorption process. Complete adsorption for Pb(II) is achieved in 25 minutes whereas MB dye is completely adsorbed within 15 minutes with high adsorption capacities. Photocatalytic degradation activity for MB dye were also analyzed and indicated 30 mg/l was degraded in 10 min. The DRS and photoluminescence life time study support good photocatalytic activity. The regeneration and recyclability of the core‐shell material have also been studied and reported.

show abstract

Application of zeolite based nanocomposites for wastewater remediation: Evaluating newer and environmentally benign approaches

Cited by 28 publications

References 74 publications

Co- and Ni-Doped TiO2 Nanoparticles Supported on Zeolite Y with Photocatalytic Properties

Co- and Ni-Doped TiO2 Nanoparticles Supported on Zeolite Y with Photocatalytic Properties

Nano-revolution in heavy metal removal: engineered nanomaterials for cleaner water

Preparation and Upscaling of Zeolite@TiO₂ Core‐shell for the Removal of Pb(II) and Methylene Blue Dye from Wastewater

Contact Info

Product

Resources

About

Application of zeolite based nanocomposites for wastewater remediation: Evaluating newer and environmentally benign approaches

Cited by 28 publications

References 74 publications

Co- and Ni-Doped TiO2 Nanoparticles Supported on Zeolite Y with Photocatalytic Properties

Co- and Ni-Doped TiO2 Nanoparticles Supported on Zeolite Y with Photocatalytic Properties

Nano-revolution in heavy metal removal: engineered nanomaterials for cleaner water

Preparation and Upscaling of Zeolite@TiO2 Core‐shell for the Removal of Pb(II) and Methylene Blue Dye from Wastewater

Contact Info

Product

Resources

About

Preparation and Upscaling of Zeolite@TiO₂ Core‐shell for the Removal of Pb(II) and Methylene Blue Dye from Wastewater