Recent developments in photocatalytic dye degradation upon irradiation with energy-efficient light emitting diodes

Jo, Wan-Kuen; Tayade, Rajesh J.

doi:10.1016/s1872-2067(14)60205-9

Cited by 115 publications

(55 citation statements)

References 53 publications

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“…For the first three runs, we got complete degradation within 80 min, and for the last run, we got 95.6% degradation with the same time. Similar results were found to be in solar degradation [27]. Heterogenous catalyst had no such loss of activity till the 4th run and the photocatalyst was found to be stable and reusable.…”

Section: Catalyst Reusabilitysupporting

confidence: 81%

“…No volatility of the solvent was seen during illumination; a sample without light adsorption was collected. In photochemical reactor, reaction mixture of 50 mL was taken and irradiated with LEDs (UVLEDs) trip peak having 6 W output power and maximum relative intensity of wavelength of 375 nm for each LED, totally 5 sets of photocatalytic reactors, each reactor having 20 LEDs [27,28] and solar light. At regular time gaps, 3 mL of the degraded sample was taken out and centrifuged to remove the catalyst for further analysis.…”

Section: Photodegradation Experiments and Antimicrobial Studiesmentioning

confidence: 99%

“…At regular time gaps, 3 mL of the degraded sample was taken out and centrifuged to remove the catalyst for further analysis. The same condition was used for solar light (LT Lutron LX-10/A Digital Lux meter and the intensity was 1250 9 100 ± 100 lx-model in S7) degradation of MB, the solar light intensity was nearly constant during the experiments done at day time 11 A.M-3 P.M (Tamilnadu, India) [27].…”

Section: Photodegradation Experiments and Antimicrobial Studiesmentioning

confidence: 99%

“…At pH 11, medium Sm-ZnOAg catalyst was negatively charged by means of adsorbed HO 2 ions. The enormous amount of HO 2 ions in the particle surface and in reaction medium helped in for the radical formation HO Á2 [27,28].…”

Section: Effect Of Solution Phmentioning

confidence: 99%

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Highly photocatalyst efficient in LEDs/solar active and reusable: Sm–ZnO–Ag nanoparticles for methylene blue degradation

Jose¹,

Manjunathan

Selvaraj³

2017

J Nanostruct Chem

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The precipitation-decomposition method was used to prepare the photocatalyst (Sm-ZnO-Ag). Synthesized catalyst was characterized by X-ray diffraction, field emission scanning electron microscope images, and optical spectroscopy. The activity of photocatalyst of Sm-ZnOAg was checked for the photodegradation of thiazin-type methylene blue (MB) dye in aqueous solution using light emitting diodes/solar illumination. Sm-ZnO-Ag is found to be excellent competent than Ag-ZnO, Sm-ZnO and ZnO nanoparticles. The absorbance of ZnO was shifted into the visible region by the dopants (Ag and Sm). The influences of operational parameters such as initial pH, dose of photocatalyst and dye concentration on photomineralization of MB have been analyzed. Sunlight (16 min) gives excellent results in photocatalytic degradation compared to LED (80 min). The microbial zones of Sm-ZnO-Ag (Nps) showed free radical generation. The Sm-ZnO-Ag catalyst is stable and it's reusable. A degradation mechanism is proposed for the photodegradation of MB under LED/solar light.Electronic supplementary material The online version of this article

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Section: Catalyst Reusabilitysupporting

confidence: 81%

Section: Photodegradation Experiments and Antimicrobial Studiesmentioning

confidence: 99%

Section: Photodegradation Experiments and Antimicrobial Studiesmentioning

confidence: 99%

Section: Effect Of Solution Phmentioning

confidence: 99%

See 2 more Smart Citations

Highly photocatalyst efficient in LEDs/solar active and reusable: Sm–ZnO–Ag nanoparticles for methylene blue degradation

Jose¹,

Manjunathan

Selvaraj³

2017

J Nanostruct Chem

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“…However, these materials and devices usually suffer from certain shortcomings, such as their difficulty to scale up for large-scale production, a relatively low membrane strength, inability to resist erosion, and so on. Recently, environmentally friendly lost cost LEDs have been developed, and LEDs have been shown to be a suitable alternative to traditional UV irradiation as an energy-efficient light source for continuous flow photocatalysis [24][25][26][27][28][29][30]. They can be realized in continuous flow photocatalysis, but they are hard affix, have less effective photocatalysts content, and result in a lower photocatalytic efficiency [3,13,[15][16][17][18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Hierarchical TiO₂ nanonetwork–porous Ti 3D hybrid photocatalysts for continuous-flow photoelectrodegradation of organic pollutants

Chang

Wang

Liu³

et al. 2017

Catal. Sci. Technol.

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Photocatalysis is an efficient approach for the degradation of organic pollutants, and continuous-flow photodegradation has advantages compared to general photocatalysis, which uses powder photocatalysts. Herein, we present a novel three-dimensional (3D) micro-nano hierarchical photocatalyst, TiO 2 nanonetwork-powder metallurgical porous titanium hybrid material (TiO 2 /porous Ti), for continuous filtration photocatalysis/photoelectrocatalysis prepared through a hydrothermal-based chemical method. A photocatalytic layer of 3D TiO 2 nanowire networks self-assembled on the surface of metallic porous Ti channels to form TiO 2 /porous Ti. The interconnected TiO 2 thin nanowire networks with anatase-rutile bi-phases introduces a photocatalytic layer with a high photocatalytic performance.The metallic titanium porous structures and wire-like morphology can enhance the photo-induced carrier transport and separation, and they can act as a 3D electrode for photoelectrocatalysis. A novel continuous-flow photocatalytic reactor was designed by setting a group of TiO 2 /porous Ti sheets vertically in a quartz box equipped with ultraviolet light-emitting diodes (UV-LED). By applying a 0.6 V low electrical bias between the TiO 2 /porous Ti electrodes and a Pt wire electrode, a device with one layer of TiO 2 /porous Ti can result in 90% degradation of methyl orange (MO) under

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Recent advances of piezo‐catalysis and photocatalysis for efficient environmental remediation

Alshammari

2024

Luminescence

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The efficient degradation of organic pollutants in diverse environmental matrices can be achieved through the synergistic application of piezo‐catalysis and photocatalysis. The focus of this study is on understanding the fundamental principles and mechanisms that govern the collaborative action of piezoelectric and photocatalytic materials. Piezoelectric nanomaterials, under mechanical stress, generate piezo‐potential, which, when coupled with photocatalysts, enhances the generation and separation of charge carriers. The resulting cascade of redox reactions promotes the degradation of a wide spectrum of organic pollutants. The comprehensive investigation involves a variety of experimental techniques, including advanced spectroscopy and microscopy, to elucidate the intricate interplay between mechanical and photoinduced processes. The influence of key parameters, such as material composition, morphology, and external stimuli on the catalytic performance, is systematically explored. This study contributes to the increasing knowledge of environmental remediation and lays the foundation for the development of advanced technologies using piezo and photocatalysis for sustainable pollutant removal.

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Recent developments in photocatalytic dye degradation upon irradiation with energy-efficient light emitting diodes

Cited by 115 publications

References 53 publications

Highly photocatalyst efficient in LEDs/solar active and reusable: Sm–ZnO–Ag nanoparticles for methylene blue degradation

Highly photocatalyst efficient in LEDs/solar active and reusable: Sm–ZnO–Ag nanoparticles for methylene blue degradation

Hierarchical TiO₂ nanonetwork–porous Ti 3D hybrid photocatalysts for continuous-flow photoelectrodegradation of organic pollutants

Recent advances of piezo‐catalysis and photocatalysis for efficient environmental remediation

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Recent developments in photocatalytic dye degradation upon irradiation with energy-efficient light emitting diodes

Cited by 115 publications

References 53 publications

Highly photocatalyst efficient in LEDs/solar active and reusable: Sm–ZnO–Ag nanoparticles for methylene blue degradation

Highly photocatalyst efficient in LEDs/solar active and reusable: Sm–ZnO–Ag nanoparticles for methylene blue degradation

Hierarchical TiO2 nanonetwork–porous Ti 3D hybrid photocatalysts for continuous-flow photoelectrodegradation of organic pollutants

Recent advances of piezo‐catalysis and photocatalysis for efficient environmental remediation

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Product

Resources

About

Hierarchical TiO₂ nanonetwork–porous Ti 3D hybrid photocatalysts for continuous-flow photoelectrodegradation of organic pollutants