Cu-impregnated zeolite Y as highly active and stable heterogeneous Fenton-like catalyst for degradation of Congo red dye

Singh, Lakhwinder; Rekha, Pawan; Chand, Shri

doi:10.1016/j.seppur.2016.06.059

Cited by 126 publications

(72 citation statements)

References 90 publications

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“…HO 2 • does not play a significant role in degradation of organic pollutant due to its lower oxidation potential than • OH. The produced • OH radical is the species responsible for the mineralization of organic pollutant into H 2 O and CO 2

{Cu}^{1 +} / zeolite normalY + H_{2} O_{2} \to {Cu}^{2 +} / zeolite normalY + {OH}^{•} + {OH}^{-}

{Cu}^{2 +} / zeolite normalY + H_{2} O_{2} \to {Cu}^{1 +} / zeolite normalY + {HO}_{2}^{•} + H^{+}

…”

Section: Resultsmentioning

confidence: 99%

New less toxic zeolite‐encapsulated Cu(II) complex nanomaterial for dual applications in biomedical field and wastewater remediation

Khalil

Kishk

EL-Mekkawi

et al. 2019

Applied Organom Chemis

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A new dual‐functional Cu(II) complex and its nanohybrid form encapsulated into NaY zeolite cavities were synthesized. The synthesized compounds were characterized using elemental analyses, X‐ray fluorescence, infrared, 1H NMR, electronic, electron spin resonance and mass spectra, powder X‐ray diffraction, surface area and transmission electron microscopy in addition to conductivity and magnetic susceptibility measurements. The encapsulated Cu(II) complex was catalytically tested for degradation of industrial wastewater. The decolorization and mineralization results indicate that the Cu(II) complex encapsulated into zeolite host is an effective heterogeneous catalyst for real industrial wastewater remediation. In addition, both free and encapsulated Cu(II) complexes were tested as anti‐microbial and anti‐tumour agents. The results show that the Cu(II) complex encapsulated into zeolite has a high activity (IC50 = 14.4 μg ml−1). The results of in vivo toxicity experiments indicate that the Cu(II) complex encapsulated into zeolite is a less toxic biocompatible material (LD50 = 1245 mg kg−1). The catalytic properties, cytotoxicity and toxicity of the new nanohybrid Cu(II) complex encapsulated into zeolite make it a promising eco‐friendly and biocompatible material for water remediation and biomedical applications.

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{Cu}^{1 +} / zeolite normalY + H_{2} O_{2} \to {Cu}^{2 +} / zeolite normalY + {OH}^{•} + {OH}^{-}

{Cu}^{2 +} / zeolite normalY + H_{2} O_{2} \to {Cu}^{1 +} / zeolite normalY + {HO}_{2}^{•} + H^{+}

…”

Section: Resultsmentioning

confidence: 99%

New less toxic zeolite‐encapsulated Cu(II) complex nanomaterial for dual applications in biomedical field and wastewater remediation

Khalil

Kishk

EL-Mekkawi

et al. 2019

Applied Organom Chemis

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“…On the other hand, a smooth surface is observed for Cu/NaX zeolite (Figure c). Indeed, the Cu disperses homogeneously throughout zeolite structures . SEM images of zeolites suggest that their morphology and particle size changed after adsorption.…”

Section: Resultsmentioning

confidence: 99%

Eco‐friendly synthesis from industrial wastewater of Fe and Cu nanoparticles over NaX zeolite and activity in 4‐nitrophenol reduction

et al. 2018

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We deposited Fe and Cu over zeolite NaX (Fe/NaX and Cu/NaX) by adsorption from effluent industrial wastewater. We synthesized the zeolite NaX by the hydrothermal method. 5 g of NaX completely adsorbed 350 and 380 mg of Fe and Cu from the industrial wastewater, respectively, in 6 h. The distribution of Fe and Cu over the NaX was uniform and amounted at 14 and 18 mass%, respectively. Fe and Cu modify the morphology of the NaX zeolite: the particle size increased from 9 μm to 10 μm for the former and decreased to 3 μm for the latter. Fe/NaX and Cu/NaX are less crystalline than NaX. BET analysis showed that the specific surface area decreased by 30 % and 50 % compared to NaX for Fe/NaX and Cu/NaX, but the ratio between meso‐ and micropores increased by 7 and 13 times, respectively. Fe/NaX and Cu/NaX synthesized by adsorption from industrial wastewater reduced +99 % of 4‐p‐nitrophenol to 4‐aminophenol in less than 100 s, which is comparable to noble metal.

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“…Therefore, the catalysts were usually prepared in high surface area morphology or loaded on the materials with high surface area to form a highly dispersed status to enhance the contacting opportunity among the catalysts and reactants [13]. The treatment efficiency on textile wastewater using Fe 2 O 3 /carbon as the catalyst for heterogeneous Fenton reaction was studied [14].…”

Section: Introductionmentioning

confidence: 99%

Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

2018

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Iron based heterogeneous Fenton catalysts are attracting much attention for its economic and environmental friendly characteristics. In this study, iron oxides loaded carbon cloth (assigned as Fe@CC) was prepared using hydrothermal hydrolysis of Fe(NO 3 ) 3 . The specific surface area of Fe@CC determined by N 2 adsorption-desorption Brunauer-Emmett-Teller method was up to 1325.5 m 2 /g, which increased by 81.8% compared with that of native carbon cloth mainly due to the loading of iron oxide. XPS (X-ray photoelectron spectroscopy) spectra confirmed that the iron oxide on the carbon surface included mainly FeOOH. Its heterogeneous Fenton-like activity was determined using Acid Red G as a model substrate for degradation. Fe@CC maintained high and relatively stable activity during 11 tests, and it showed high COD (Chemical Oxygen Demand) removal efficiency and high apparent H 2 O 2 utilization efficiency. The homogeneous Fenton reaction using the amount of leached Fe(III) suggested that the surficial reaction on Fe@CC was dominant. The stability and the mechanism for gradual decrease of activity during the first 4 tests were also discussed.

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Cu-impregnated zeolite Y as highly active and stable heterogeneous Fenton-like catalyst for degradation of Congo red dye

Cited by 126 publications

References 90 publications

New less toxic zeolite‐encapsulated Cu(II) complex nanomaterial for dual applications in biomedical field and wastewater remediation

New less toxic zeolite‐encapsulated Cu(II) complex nanomaterial for dual applications in biomedical field and wastewater remediation

Eco‐friendly synthesis from industrial wastewater of Fe and Cu nanoparticles over NaX zeolite and activity in 4‐nitrophenol reduction

Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

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