Photocatalytic Removal of Alizarin Yellow R from Water using Modified Zinc Oxide Catalyst

Abass, Ahmed K.; Raoof, Suzan D.

doi:10.14233/ajchem.2016.19292

Cited by 6 publications

(4 citation statements)

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“…In this study, the Ag 2 S-CNT nanocomposite was for four degradation cycles of texbrite BA-L [66]. Further, the photocatalytic activity of CNTs-Ag 2 S in the degradation of AYR was compared with different photocatalysts and presented in Table 3 [24,25,46,[67][68][69].…”

Section: Adsorbent Q E (Exp) Mg G −1mentioning

confidence: 99%

“…It is a highly water-soluble anionic dye that contains polycyclic aromatic hydrocarbons [25]. AYR is a derivative of salicylic acid and was prepared in 1887 by Rudolf Nietzki through the reaction of m-nitroaniline and salicylic acid [46]. AYR is an industrially important dye and is vastly used in the textile, leather, plastics, paints, and lacquer industries [24].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption Efficiency and Photocatalytic Activity of Silver Sulfide Nanoparticles Deposited on Carbon Nanotubes

et al. 2023

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A multimode, dual functional nanomaterial, CNTs-Ag2S, comprised of carbon nanotubes (CNTs) and silver sulfide (Ag2S) nanoparticles, was prepared through the facile hydrothermal process. Before the deposition of Ag2S nanoparticles, hydrophobic CNTs were modified to become hydrophilic through refluxing with a mixture of concentrated nitric and sulfuric acids. The oxidized CNTs were employed to deposit the Ag2S nanoparticles for their efficient immobilization and homogenous distribution. The CNTs-Ag2S could adsorb toxic Cd(II) and completely degrade the hazardous Alizarin yellow R present in water. The adsorption efficiency of CNTs-Ag2S was evaluated by estimating the Cd(II) adsorption at different concentrations and contact times. The CNTs-Ag2S could adsorb Cd(II) entirely within 80 min of the contact time, while CNTs and Ag2S could not pursue it. The Cd(II) adsorption followed the pseudo-second-order, and chemisorption was the rate-determining step in the adsorption process. The Weber−Morris intraparticle pore diffusion model revealed that intraparticle diffusion was not the sole rate-controlling step in the Cd(II) adsorption. Instead, it was contributed by the boundary layer effect. In addition, CNTs-Ag2S could completely degrade alizarin yellow R in water under the illumination of natural sunlight. The Langmuir-Hinshelwood (L-H) model showed that the degradation of alizarin yellow R proceeded with pseudo-first-order kinetics. Overall, CNTs-Ag2S performed as an efficient adsorbent and a competent photocatalyst.

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Section: Adsorbent Q E (Exp) Mg G −1mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorption Efficiency and Photocatalytic Activity of Silver Sulfide Nanoparticles Deposited on Carbon Nanotubes

et al. 2023

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“…Jiang et al, 2013;Sousa et al, 2018) in order to facilitate the decontamination process, not only from a regulatory point of view, but also as part of the predecontamination of toxic substances in the environment. (Abass & Raoof, 2016;Liu et al, 2015) This is a delicate task, considering the large number of chemical substances involved and the highly variable concentration levels, which can range from a few grams to nanograms. (Deblonde et al, 2011) In addition, their high thermal and chemical stability makes them resistant to degradation by light, heat or other traditional methods.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of SBA-15 adsorbent for the removal of organic and inorganic substances

YADOUN,

BENHAMOU,

HENNOUS

et al. 2024

Preprint

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This study investigates the adsorption of pollutants with different chemical structures; organic Naphtol Green B (NGB) and inorganic (Copper) on a nanocomposite with a hexagonal structure of the SBA-15 type. This research is divided into two main parts: the first carries out the synthesis of SBA-15 and its derivatives phases functionalized by 3-aminopropyl-triethoxysilane (APTES) and calcined at 823K. The second part presents the results of the removal of Naphtol Green B dye and copper. Parameters such as initial pollutant concentrations, adsorbent mass, solution pH and system temperature were studied. High-resolution X-ray diffractogram (XRD) showed three distinct peaks characteristic of highly ordered mesoporous material. Nitrogen adsorption-desorption isotherm of SBA-15 at 77K° is type IV typical of mesoporous materials. In addition, zeta potential, thermogravimetric analysis and Fourier transform infrared spectroscopy (FT-IR) were also used in the characterization. Pseudo-first order and pseudo-second order models was used to describe the adsorption kinetic results. The modeling of the experimental results of the pollutants followed the Sips isotherm and pseudo-second order models. The primary objective of this study is the potential of the synthesized nanomaterials in the removal of effluents regardless of their different chemical structure.

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“…93.7% of the dye was degraded in 42hrs by using 100mg/L of iron nanoparticles [2] and strictly followed first-order kinetics. It was found that 0.3 g of Co, Cu, and Ni impregnated ZnO nanoparticles synthesized by precipitation method, which gave the highest percentage (92.54%) of decoloration under UV light [3]76.7% of Alizarin Yellow was removed by nano-TiO2 thin films on a borosilicate glass substrate using sol-gel template method under UV-C and visible light irradiation [4] and degradation of aqueous alizarin yellow dye solution with TiO2 Degussa P25 as photocatalyst in slurry form using UV-A light at 365nm. Different methods were employed to synthesize p-n junction TiO2-NiO composites, such as sol-gel, hydrothermal, and precipitation methods.…”

Section: Introductionmentioning

confidence: 99%

Modified Auto-Combustion Synthesis of Mesoporous TiO<sub>2</sub>-NiO Nanosheets for Selective Adsorption and Photodegradation of Alizarin Yellow Dye under Direct Sunlight and Reaction Kinetic Study

Padmavathy

Narasimhamurthy

Manjunatha

et al. 2022

AMM

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The application of a photocatalyst with effective adsorption capacity and higher photocatalytic activity under direct sunlight for the treatment of industrial effluent contaminated with dyes has received increased attention. In this work, mesoporous TiO2-NiO nanosheets were synthesized by a modified auto-combustion technique followed by thermal post-treatment at 400°C. The XRD pattern for modified auto-combusted resulting TiO2 (sc) and TiO2-NiO (sc) [5wt%NiO] nanosheets comprised of mixed-phase anatase and rutile for TiO2 and cubic for NiO. The result of SEM demonstrated that the morphology of TiO2 is a sheet and TiO2-NiO is a rod-like structure. UV-vis spectroscopy results imply that the bandgap of TiO2 and TiO2-NiO mixed phase is 3.1eV and 2.7eV. N2 sorption (BET) showed a mesoporous structure and interpret specific surface areas of 19.528m2/g and 63.215 m²/g. Adsorption of the dye on the solid catalyst is inexpensive and efficient but disposing of the adsorbed dye is challenging. Among various dye removal techniques, photocatalytic degradation under direct sunlight is significant, cost-effective, and sustainable. Photocatalytic experiments using alizarin yellow as a model pollutant showed that the degradation percentage of AY was 93.54% in 120min for 100mg of TiO2(sc) and 97% in 90min for 60mg of TiO2-NiO(sc). Degradation of AY using TiO2(sc) and TiO2-NiO(sc) follows a pseudo-first-order reaction, whereas adsorption of AY on TiO2-NiO(sc) follows the second-order kinetics, fits well in the Freundlich Isotherm model. Therefore, nanosized mesoporous TiO2-NiO(sc) nanosheets with a p-n junction are considered efficient photocatalysts under direct sunlight due to narrowing down in bandgap, larger surface, and mixed-phase.

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Photocatalytic Removal of Alizarin Yellow R from Water using Modified Zinc Oxide Catalyst

Cited by 6 publications

References 0 publications

Adsorption Efficiency and Photocatalytic Activity of Silver Sulfide Nanoparticles Deposited on Carbon Nanotubes

Adsorption Efficiency and Photocatalytic Activity of Silver Sulfide Nanoparticles Deposited on Carbon Nanotubes

Synthesis and application of SBA-15 adsorbent for the removal of organic and inorganic substances

Modified Auto-Combustion Synthesis of Mesoporous TiO<sub>2</sub>-NiO Nanosheets for Selective Adsorption and Photodegradation of Alizarin Yellow Dye under Direct Sunlight and Reaction Kinetic Study

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