Hybriding hierarchical zeolite with Pt nanoparticles and graphene: Ternary nanocomposites for efficient visible-light photocatalytic degradation of methylene blue

Gong, Pengyu; Li, Baoshan; Kong, Xianglong; Shakeel, Muhammad; Liu, Jianjun; Zuo, Shengli

doi:10.1016/j.micromeso.2017.10.029

Cited by 15 publications

(3 citation statements)

References 59 publications

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“…The effluent from textile industries thus carries a large number of dyes and other additives which are added during the coloring process. As is well known, the MB substrate is a common and relatively stable contaminant in aqueous solution . So, the catalytic activities of the complexes 1 and 2 were utilized for the degradation of MB at room temperature as a test pollutant, Figure .…”

Section: Resultsmentioning

confidence: 99%

Crystal structure, characterization and catalytic activities of Cu(II) coordination complexes with 8‐hydroxyquinoline and pyrazine‐2‐carboxylic acid

Etaiw

El‐bendary

2017

Applied Organom Chemis

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Green and blue crystals of the coordination complexes [Cu(8-hquin) 2 (H 2 O) 2 ], 1 and [Cu(pyzca) 2 (H 2 O) 2 ], 2 were obtained by the reaction of copper chloride with 8-hydroxyquinoline (8-hquinH) or pyrazine-2-carboxylic acid (pyzcaH) as ligands. The structures of 1 and 2 were characterized by elemental analyses, electronic absorption, Infrared (IR) and thermal studies. The luminescent behavior complexes 1 and 2 was also discussed. The coordination environment of copper(II) center displays distorted octahedral coordination geometry. The structure of the complexes 1 and 2 is constructed by an infinite number of discrete mononuclear molecules extending along the a-axis to form a 1D-chain via H-bonds. The extensive hydrogen bonds and short contacts develop the structures of 1 and 2 to 3D-network. The catalytic behavior of the complexes 1 and 2 was utilized for degradation of methylene blue dye (MB). The kinetic data indicated that the complexes 1 and 2 are effective catalysts for degradation of MB dye. Photoluminescence probing technology was used as a sensitive probe for detecting • OH radicals.

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Section: Resultsmentioning

confidence: 99%

Crystal structure, characterization and catalytic activities of Cu(II) coordination complexes with 8‐hydroxyquinoline and pyrazine‐2‐carboxylic acid

Etaiw

El‐bendary

2017

Applied Organom Chemis

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“…On the other hand, overdosing on MB can produce central nervous system toxicity; therefore, its breakdown is both environmentally and physiologically essential. Noble metal nanoparticles, such as Au, Ag, Pd, Pt, and Cu, have been extensively studied for efficient catalytic reduction and decoloration of dyes in an aqueous phase at room temperature [19][20][21][22][23]. These catalysts have already demonstrated significant characteristics such as increased efficiency, eco-friendly processing, and easy implementation.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

et al. 2021

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Herein, Sargassum coreanum (marine algae)-mediated silver nanoparticles (AgNPs) were successfully synthesized by a simple reduction method. The synthesized AgNPs were characterized using ultraviolet-visible spectroscopy, attenuated total reflection Fourier transformed infrared spectroscopy, X-ray diffractometry, field emission scanning electron microscopy (FESEM) with energy-dispersive X-ray (EDX) spectroscopy, and high-resolution transmission electron microscopy (HR-TEM) analysis. The acquired colloidal AgNPs were strongly absorbed around 420 nm and displayed brown color under visible light. The XRD pattern of AgNPs exposed their face-centered cubic geometry along with crystalline nature. The HRTEM images of synthesized AgNPs confirmed the mean particle size of 19 nm with a distorted spherical shape, and the calculated interlayer distance (d-spacing value) was about 0.24 nm. Further, the catalytic degradation of methylene blue using sodium borohydride and AgNPs was monitored using UV–vis spectroscopy. The result revealed that AgNPs performed as a superior catalyst, which completely degraded MB in 20 min. The rate constant for MB degradation was calculated to be 0.106 min−1, demonstrating that the marine algae-mediated AgNPs had outstanding catalytic activity. This approach is easy and environmentally benign, which can be applied for environmental-based applications such as dye degradation and pollutant detoxification.

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“…To increase pollutant removal efficiency, photocatalysis can be combined with other methods, such as ozone [11,17,47], zeolite [48][49][50], and electrocoagulation [51][52][53][54]. The combination of photocatalysis and electrocoagulation treatments is often conducted in separated reactors [9,55,56], and a small number of researchers employ a single reactor for this purpose.…”

Section: Introductionmentioning

confidence: 99%

The Addition of Anthocyanin as a Sensitizer for TiO2 Nanotubes in a Combined Process of Electrocoagulation and Photocatalysis for Methylene Blue Removal

Kustiningsih,

Pujiastuti,

Sari

et al. 2023

Sustainability

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Photocatalysis with TiO2 semiconductors is one of several potential methods for removing Methylene Blue (MB) that is environmentally friendly, relatively cheap, and effective. The capability of TiO2 photocatalysts for degrading MB can be improved by modifying the morphology of TiO2 into nanotubes and adding anthocyanin sensitizers. The objective of this study was to investigate the effect of anthocyanin sensitizer addition for TiO2 nanotubes on MB removal using a combined process of electrocoagulation and photocatalysis. TiO2 nanotubes were prepared through an anodization method with a glycerol electrolyte containing NH4F of 0.5%w/v and water of 25%v/v. The cathode and anode used in the electrocoagulation process were 316 stainless steel and aluminum, respectively. The characteristics of the resulting TiO2 nanotubes were analyzed using SEM-EDX, UV–Vis DRS, and XRD analyses. The results showed that the electrocoagulation at a pH of 10 and a voltage of 50 volts resulted in an MB removal efficiency of 57.88%. In the photocatalysis process, sensitizer addition can increase the MB removal efficiency from 19.71% to 29.06%. Furthermore, a combined process of electrocoagulation and photocatalysis without and with sensitizer addition resulted in MB removal efficiencies of 59.66% and 64.30%, respectively.

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Hybriding hierarchical zeolite with Pt nanoparticles and graphene: Ternary nanocomposites for efficient visible-light photocatalytic degradation of methylene blue

Cited by 15 publications

References 59 publications

Crystal structure, characterization and catalytic activities of Cu(II) coordination complexes with 8‐hydroxyquinoline and pyrazine‐2‐carboxylic acid

Crystal structure, characterization and catalytic activities of Cu(II) coordination complexes with 8‐hydroxyquinoline and pyrazine‐2‐carboxylic acid

Sustainable Synthesis of Silver Nanoparticles Using Marine Algae for Catalytic Degradation of Methylene Blue

The Addition of Anthocyanin as a Sensitizer for TiO2 Nanotubes in a Combined Process of Electrocoagulation and Photocatalysis for Methylene Blue Removal

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