Au@Ag bimetallic nanoparticles deposited on palygorskite in the presence of TiO2 for enhanced photodegradation activity through synergistic effect

Osajima, Josy A.; Sá, Alexandro S.; Honorio, Luzia M. C.; Trigueiro, Pollyana; Pinto, Lucas Italo Freitas; Oliveira, Joziel Alves De; Furtini, Marcelo Barbosa; Bezerra, Roosevelt D.S.; Alcántara, Ana C. S.; Filho, Edson Cavalcanti da Silva

doi:10.1007/s11356-020-11807-8

Cited by 13 publications

(3 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previousauthors have evaluated material stability, such as Araújo et al, who investigated material stability through reuse/recycles in photocatalytic tests using Zno synthesized in the presence of polysaccharides [ 33 ]. Sa et al [ 24 ] evaluated this parameter inthe degradation of a bentazone herbicide. In order to estimate the photocatalytic activity of ZnO and Ce nanorods under the same conditions with the best 1% CZ sample, Kardes et al [ 65 ] observed three consecutive runs of color removal in AR88 azo dye.…”

Section: Resultsmentioning

confidence: 99%

“…As toxicity usually refers to the level of a toxic chemical, several conventional physicochemical parameters are used to assess the environmental risk of the pollutant [ 22 ]. The incomplete oxidation of pollutants can generate intermediates of a more toxic nature than the original compound [ 23 , 24 ]. The toxicity test is used during different stages of the AOPs treatment and employs different organisms, for example fish, bacteria, algae, plants, and microcrustaceans [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

et al. 2021

Self Cite

View full text Add to dashboard Cite

Ibuprofen (IBU) is one of the most-sold anti-inflammatory drugs in the world, and its residues can reach aquatic systems, causing serious health and environmental problems. Strategies are used to improve the photocatalytic activity of zinc oxide (ZnO), and thosethat involvethe inclusion of metalhave received special attention. The aim of this work was to investigate the influence of the parameters and toxicity of a photoproduct using zinc oxide that contains cerium (ZnO-Ce) for the photodegradation of ibuprofen. The parameters include the influence of the photocatalyst concentration (0.5, 0.5, and 1.5 g L−1) as well as the effects of pH (3, 7, and 10), the effect of H2O2, and radical scavengers. The photocatalyst was characterized by Scanning Electron Microscopy-Energy Dispersive Spectroscopy, Transmission electron microscopy, Raman, X-Ray Diffraction, surface area, and diffuse reflectance. The photocatalytic activity of ibuprofen was evaluated in an aqueous solution under UV light for 120 min. The structural characterization by XRD and SEM elucidated the fact that the nanoparticle ZnO contained cerium. The band gap value was 3.31 eV. The best experimental conditions for the photodegradation of IBU were 60% obtained in an acidic condition using 0.50 g L−1 of ZnO-Ce in a solution of 20 ppm of IBU. The presence of hydrogen peroxide favored the photocatalysis process. ZnO-Ce exhibited good IBU degradation activity even after three photocatalytic cycles under UV light. The hole plays akey role in the degradation process of ibuprofen. The toxicity of photolyzed products was monitored against Artemia salina (bioindicator) and did not generate toxic metabolites. Therefore, this work provides a strategic design to improve ZnO-Ce photocatalysts for environmental remediation.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…MOFs with two or more metals in their structure provide opportunities in terms of multifunctionality for many applications [23,[38][39][40][41][42][43][44][45][46][47]. Due to the synergistic effects, mixed metal-MOFs can exhibit better performance in various applications compared to single-metal MOFs particularly in heterogeneous catalysis [45,[48][49][50][51][52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Porphyrin based Ni/Co metal-organic framework: Preparation, characterization and photodegradation of 1,5-dihydroxynaphthalene

Bokaei

Rahim

Rabbani

2023

Preprint

View full text Add to dashboard Cite

In this study, mixed-metal metal-organic frameworks (MM-MOFs) containing metal-based porphyrin moieties will be synthesized and characterized. Then, efficiency of MOFs with Co and Ni alone and Co/Ni together in the different molar ratios as nodes with Mn-TCPP and H2TCPP as a linker in the structure of bimetallic-MOFs were investigated for photodegradation of DHN to Juglone. Also, different effecting factors on photocatalytic activity containing solvent, oxidant, time, and type of lamp, were further optimized for the best MM-MOF. According to the results, Ni50%/Co50% TCPP-Mn with the molar ratio of 1:1 of Ni:Co shows the highest efficiency in the photocatalytic process which was up to 66.3% under xenon lamp irradiation with blowing of O2 as the source of oxidant. Therefore, the presence both of nickel and cobalt in the structure led to a synergistic effect in enhancement of photocatalytic activity application.

show abstract

Metalloporphyrin-based Ni/Co metal–organic framework: preparation, characterization and photodegradation of 1,5-DHN

Bokaei,

Rahimi,

Rabbani

2024

Polym. Bull.

View full text Add to dashboard Cite

Au@Ag bimetallic nanoparticles deposited on palygorskite in the presence of TiO2 for enhanced photodegradation activity through synergistic effect

Cited by 13 publications

References 90 publications

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

Porphyrin based Ni/Co metal-organic framework: Preparation, characterization and photodegradation of 1,5-dihydroxynaphthalene

Metalloporphyrin-based Ni/Co metal–organic framework: preparation, characterization and photodegradation of 1,5-DHN

Contact Info

Product

Resources

About