Facile sonochemical synthesis of Zn2SnO4-V2O5 nanocomposite as an effective photocatalyst for degradation of Eosin Yellow

Raja, V. Ramasamy; Rosaline, D. Rani; Suganthi, A.; Rajarajan, Muttukrishnan

doi:10.1016/j.ultsonch.2018.02.043

Cited by 36 publications

(7 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first-order apparent rate constant of the pyrolyzed sample was 2.6 × 10 −3 min −1 , similar to the values reported by other groups for this dye [54,56]. However, it should be noted that the catalysts' loading in this work is lower than that reported in other studies [54,56]; thus, it can be inferred that the catalytic activity for sample Cu4-800-N2 is among the highest values reported for alternative catalysts for the photocatalytic degradation of yellow 5 or azo dyes [53,57].…”

Section: Photocatalytic Tests On Cu-based Photocatalystssupporting

confidence: 86%

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

et al. 2022

View full text Add to dashboard Cite

Carbon-doped nanostructured CuMo-based photocatalysts were prepared by solvothermal synthesis. Two thermal treatments—oxidative and inert atmosphere—were used for the synthesis of the catalysts, and the influence of spherical carbon structures upon the crystalline phases on the photocatalytic activity and stability was studied. XRD showed the catalysts are nanostructured and composed by a mixture of copper (Cu, Cu2O, and CuO) and molybdenum (MoO2 and MoO3) crystalline phases. The catalysts were used for the degradation of yellow 5 under solar light. A remarkable leaching of Mo both in dark and under solar irradiation was observed and quantified. This phenomenon was responsible for the loss of photocatalytic activity for the degradation of the dye on the Mo-containing series. Conversely, the Cu-based photocatalysts were stable, with no leaching observed after 6 h irradiation and with a higher conversion of yellow 5 compared with the Mo- and CuMo series. The stability of Cu-based catalysts was attributed to a protective effect of spherical carbon structures formed during the solvothermal synthesis. Regarding the catalysts’ composition, sample Cu4-800-N2 prepared by pyrolysis exhibited up to 4.4 times higher photoactivity than that of the pristine material, which is attributed to a combined effect of an enhanced surface area and micropore volume generated during the pyrolytic treatment due to the presence of the carbon component in the catalyst. Scavenger tests have revealed that the mechanism for tartrazine degradation on irradiated Cu-based catalysts involves successive attacks of •OH radicals.

show abstract

Section: Photocatalytic Tests On Cu-based Photocatalystssupporting

confidence: 86%

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Furthermore, it can be concluded no lixiviation of copper species was detected in solution confirming the stability of the photocatalyst when CPC photoreactor is used. In summary, herein obtained values for the degradation of tartrazine degradation using a Cu@C catalyst under artificial or natural solar irradiation are in the same order or even are higher than the values recently reported for alternative catalysts such as Fe2O3/Mn2O3 composites [53], Zn2SnO4-V2O5 nanocomposite [54], two-dimensional Zn-Co [55] catalyst, Ag2CO3-loaded S-doped graphene oxide [56], TiO2 immobilized on membranes [57], and Cu-based catalysts [46,[49][50][51][52], including CeO2/CuO/Ag2CrO4 ternary heterostructures based on CeO2/CuO [58], and Cu/CuO nanorods under visible LED light irradiation. However, most of this literature did not mention or include quantitative lixiviation studies of Cu-based active phase as in the present work.…”

Section: Lixiviation Testssupporting

confidence: 61%

Performance of a C-containing Cu-based photocatalyst for the degradation of tartrazine: Comparison of performance in a slurry and CPC photoreactor under artificial and natural solar light

Muñoz-Flores

Poon

Ania

et al. 2022

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…The fact can be explained on the basis of decrease of the formation of superoxide species on the surface of the photocatalyst due to the interruption of photons by the dye molecules before they attain the surface of the catalyst. 56 The optimum dye concentration achieved for both EY and BG dyes was 10 ppm. Two separate graphs were shown for each dye in Figure 10b,e for better understanding effect of initial concentration.…”

Section: Effect Of Dye Concentrationmentioning

confidence: 95%

“…After a certain threshold, the rate of photodegradation process decreases. The fact can be explained on the basis of decrease of the formation of superoxide species on the surface of the photocatalyst due to the interruption of photons by the dye molecules before they attain the surface of the catalyst 56 . The optimum dye concentration achieved for both EY and BG dyes was 10 ppm.…”

Section: Photocatalytic Degradationmentioning

confidence: 99%

Hydroxyapatite nanoparticles decorated with metal–organic framework, Co‐Cu/ZIF@HAp, and evaluation of photocatalytic performance of the prepared nanocomposite in the degradation of organic pollutants

Bharali,

Kalita,

Chakraborty

et al. 2023

Applied Organom Chemis

View full text Add to dashboard Cite

In this study, a novel hydroxyapatite (HAp)‐based composite, Co‐Cu/ZIF@HAp, was constructed through in situ growth and simultaneous sonication followed by magnetic string. Herein, the HAp‐based nanocomposite was obtained in which HAp was coated with cobalt–copper bimetallic zeolitic imidazolate framework (ZIF) in one‐pot synthesis method. The as‐synthesized composite was characterized by PXRD, FTIR, FE‐SEM, EDS, HR‐TEM, TGA‐DTG, XPS, BET, and UV‐DRS techniques, which suggested that HAp was well coated with bimetallic ZIF. The prepared composite was utilized as a catalyst in degradation of organic pollutants. Removal of organic pollutants such as organic dyes has become indispensable due to their higher stability, toxicity, and mutagenic nature. Two commonly found organic dyes, namely, Eosin Yellow (EY) and Brilliant Green (BG), were chosen for the investigation of photocatalytic activity of the as‐prepared catalyst. The degradation process was carried out under solar radiation, and there was no utilization of any oxidizing and reducing agent. Several parameters such as amount of catalyst dose, initial concentration of the dye solution, and effect of different pH conditions were evaluated for better understanding of photocatalytic performance of Co‐Cu/ZIF@HAp composite. Both EY and BG dyes were almost degraded up to 98.3% and 99.5%, respectively, within 50 min by the as‐prepared nanocomposite. Also, quenching test was performed that confirmed the formation of superoxide radicals (O2−.) as reactive oxygen species (ROS) in the photodegradation process. The as‐synthesized catalyst was repeatedly used for five times to ascertain the stability and reusability of catalyst.

show abstract

Facile sonochemical synthesis of Zn2SnO4-V2O5 nanocomposite as an effective photocatalyst for degradation of Eosin Yellow

Cited by 36 publications

References 42 publications

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

Photocatalytic Performance of Carbon-Containing CuMo-Based Catalysts under Sunlight Illumination

Performance of a C-containing Cu-based photocatalyst for the degradation of tartrazine: Comparison of performance in a slurry and CPC photoreactor under artificial and natural solar light

Hydroxyapatite nanoparticles decorated with metal–organic framework, Co‐Cu/ZIF@HAp, and evaluation of photocatalytic performance of the prepared nanocomposite in the degradation of organic pollutants

Contact Info

Product

Resources

About