Metal ferrites-based nanocomposites and nanohybrids for photocatalytic water treatment and electrocatalytic water splitting

Ahmad, Farhan; Arshad, Javeria; Rashid, Ehsan Ullah; Ahmad, Haroon; Nawaz, Shahid; Munawar, Junaid; Zdarta, Jakub; Jesionowski, Teofil; Bilal, Muhammad

doi:10.1016/j.chemosphere.2022.136835

Cited by 44 publications

(6 citation statements)

References 186 publications

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“…Due to their inert nature, they linger in the surroundings for a considerable time, making them a potential health hazard [2]. Polluted water exposed to heavy metals eventually makes its way into the ecosystem, posing a risk to both human physical condition and the surroundings [3]. Profound metals are potentially carcinogenic [4] and are not degradable; therefore, their presence in water in excessive quantities may be very harmful to human beings [5].…”

Section: This Article Is Part Of the Topical Collection On Water And ...mentioning

confidence: 99%

Removal of Toxic Metals from Water by Nanocomposites through Advanced Remediation Processes and Photocatalytic Oxidation

et al. 2023

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Purpose of Review Heavy and toxic metals are becoming more prevalent in the water sources of the globe, which has detrimental repercussions for both human health and the health of ecosystems. The summary of recent findings on treatment possibilities of toxic metal species by nanomaterials should facilitate the development of more advanced techniques of their removal. Recent Findings The high concentrations of chromium, mercury, and arsenic identified in wastewater cause a hazard to human health. There is a wide variety of nanoadsorbents and nanophotocatalysts used for heavy/hazardous metal removal. Recent research has resulted in the production of advanced nanostructures that exhibit extraordinary heavy/hazardous metal adsorption effectiveness and photocatalytic diminution of metal ions. These nanostructures have physically and chemically tunable features. Summary In this review article, the use of carbon-based nanomaterials, polymer-based nanomaterials, and semiconductor-based nanomaterials are extensively discussed to remove mercury, chromium, and arsenic ions from wastewater by the adsorption process. Advanced nanomaterials involved in photocatalytic reduction are also comprehensively discussed.

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Section: This Article Is Part Of the Topical Collection On Water And ...mentioning

confidence: 99%

Removal of Toxic Metals from Water by Nanocomposites through Advanced Remediation Processes and Photocatalytic Oxidation

et al. 2023

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“…Because of this, wastewater must also be cleaned before being released into rivers to have the least environmental damage 5 , 6 . Among the leading causes of water pollution are non-biodegradable chemicals and soluble dyes 7 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of boron-doped graphene oxide anchored with copper sulphide flowers as visible light active photocatalyst for methylene blue degradation

Ahmad¹,

Zahid²,

Tahir³

et al. 2023

Sci Rep

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The non-biodegradable nature of waste emitted from the agriculture and industrial sector contaminates freshwater reserves. Fabrication of highly effective and low-cost heterogeneous photocatalysts is crucial for sustainable wastewater treatment. The present research study aims to construct a novel photocatalyst using a facile ultrasonication-assisted hydrothermal method. Metal sulphides and doped carbon support materials work well to fabricate hybrid sunlight active systems that efficiently harness green energy and are eco-friendly. Boron-doped graphene oxide-supported copper sulphide nanocomposite was synthesized hydrothermally and was assessed for sunlight-assisted photocatalytic degradation of methylene blue dye. BGO/CuS was characterized through various techniques such as SEM–EDS, XRD, XPS, FTIR, BET, PL, and UV–Vis DRS spectroscopy. The bandgap of BGO-CuS was found to be 2.51 eV as evaluated through the tauc plot method. The enhanced dye degradation was obtained at optimum conditions of pH = 8, catalyst concentration (20 mg/100 mL for BGO-CuS), oxidant dose (10 mM for BGO-CuS), and optimum time of irradiation was 60 min. The novel boron-doped nanocomposite effectively degraded methylene blue up to 95% under sunlight. Holes and hydroxyl radicals were the key reactive species. Response surface methodology was used to analyze the interaction among several interacting parameters to remove dye methylene blue effectively.

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“…In thistrend, it is possibleto combine such properties as a developed surface and porosity with outstanding physical and chemical activity, sorption and catalytic ability, electrical and magnetic properties, biological activity, strength characteristics, stability in various media, etc. [4,[11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Among all metal ferrites, zinc ferrite should be noted especially for its extremely high chemical stability, magnetic properties, non-toxicity for living organisms and environmental safety [24,29,30]. Materials based on zinc ferrite possess photocatalytic activity and activity in Fenton reactions that allows using them as photoadsorbents and photocatalysts for the treatment of various media and degradation of organic pollutants [12,[30][31][32].In addition, recent studies indicated a noticeable adsorption capacity of nanomaterials based on ZnFe 2 O 4 , with respect to selenium ions (43.67 mg/g at pH 2.5) [28] and heavy metal ions (49.42, 54.69 and 12.34 mg/g for Ni 2+ , Cd 2+ and Cr 3+ [23,33]) from the aquatic environment, which is important for solving the problem of wastewater treatment and converting industrial waste into valuable materials for recycling.…”

Section: Introductionmentioning

confidence: 99%

ZnFe2O4/Zeolite Nanocomposites for Sorption Extraction of Cu2+ from Aqueous Medium

Tomina,

Novikova,

Kotova

et al. 2023

AppliedChem

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In order to enhance the efficiency of heavy metal ion extraction from aqueous medium, new nanocomposite magnetic sorbents were synthesized on the base of natural zeolite (Zt) and nanoparticles of ZnFe2O4 (F). The composition, structure and physical–chemical properties of new composites with 2% (Zt-2F), 8% (Zt-8F) and 16% (Zt-16F) of zinc ferrite were characterized by XRD, BET adsorption–desorption of nitrogen, SEM with elemental mapping, TEM and magnetometry. The sorption capacity of materials was assessed towards Cu2+ ions in aqueous solutions, for which kinetic and equilibrium features of sorption were established. The maximal sorption capacity (amax, mg/g) of the studied materials increased in the order: Zt (19.4) < Zt-2F (27.3) < Zt-8F (30.2) < Zt-16F (32.8) < ZnFe2O4 (161.3). The kinetics of the sorption process followed a pseudo-second order kinetic model. The sorption equilibrium at zinc ferrite was successfully described by the Langmuir model, while the Freundlich model better fitted the sorption equilibrium on zeolite and composites. The efficiency of Cu2+ ion extraction from 320 mg/dm3 aqueous solution was 63% for composite Zt-16F and 100% for a sample of ZnFe2O4. It was established that the proposed composite sorbents provide the operation of several cycles without regeneration, they can be easily recycled with 0.1 N HCl solution and are capable of magnetic separation. The advantages of new composites and the proposed method of synthesis allow recommending these materials as effective sorbents of heavy metals from wastewater.

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Metal ferrites-based nanocomposites and nanohybrids for photocatalytic water treatment and electrocatalytic water splitting

Cited by 44 publications

References 186 publications

Removal of Toxic Metals from Water by Nanocomposites through Advanced Remediation Processes and Photocatalytic Oxidation

Removal of Toxic Metals from Water by Nanocomposites through Advanced Remediation Processes and Photocatalytic Oxidation

Investigation of boron-doped graphene oxide anchored with copper sulphide flowers as visible light active photocatalyst for methylene blue degradation

ZnFe2O4/Zeolite Nanocomposites for Sorption Extraction of Cu2+ from Aqueous Medium

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