Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Honorio, Luzia M. C.; Oliveira, André Luiz Menezes de; Filho, Edson Cavalcanti da Silva; Osajima, Josy Anteveli; Hakki, Amer; Macphee, Donald E.; Santos, I. M. G.

doi:10.1016/j.apsusc.2020.146991

Cited by 38 publications

(14 citation statements)

References 69 publications

(76 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results contrast with the work of Xuet al [ 54 ], who observed that the activity of the holes to generate oxidative species was less efficient in the IBU photodegradation mechanism. In the presence of Ag + ions, the photocatalysis had the smallest decrease in total degradation, possibly due tothe deposition of Ag 0 on the surface allowing better photocatalytic activity through the capture of photogenerated electrons avoiding recombination [ 32 , 62 ]. Overall, the order of photochemical activity in the photodegradation of IBU follows the order h + > ● OH > e − .…”

Section: Resultsmentioning

confidence: 99%

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

et al. 2021

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%

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

et al. 2021

View full text Add to dashboard Cite

show abstract

“…They concluded that the catalyst loading and dye concentration played a crucial role in the photocatalytic efficiency. Due to the octahedral tilting in the crystalline network of SnO 6 , this distortion plays an important role in the migration of photogenerated charge carriers in SrSnO 3 , CaSnO 3 , and BaSnO 3 for photocatalytic degradation of pollutants (Honorio et al, 2020). Honorio et al (2020) synthesized SrSnO 3 with ZrO 2 as a supporting semiconductor for photocatalytic degradation of a textile azo dye pollutant.…”

Section: Tantalum and Other Perovskite-based Materials In Photocatalysismentioning

confidence: 99%

“…Due to the octahedral tilting in the crystalline network of SnO 6 , this distortion plays an important role in the migration of photogenerated charge carriers in SrSnO 3 , CaSnO 3 , and BaSnO 3 for photocatalytic degradation of pollutants (Honorio et al, 2020). Honorio et al (2020) synthesized SrSnO 3 with ZrO 2 as a supporting semiconductor for photocatalytic degradation of a textile azo dye pollutant. Honorio discovered from SEM analysis that SrSnO 3 was uniformly dispersed on ZrO 2 which infers higher activity as a result of SrSnO 3 active phase even in a smaller amount.…”

Section: Tantalum and Other Perovskite-based Materials In Photocatalysismentioning

confidence: 99%

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

Nkwachukwu

Arotiba

2021

Front. Chem.

View full text Add to dashboard Cite

Meeting the global challenge of water availability necessitates diversification from traditional water treatment methods to other complementary methods, such as photocatalysis and photoelectrocatalysis (PEC), for a more robust solution. Materials play very important roles in the development of these newer methods. Thus, the quest and applications of a myriad of materials are ongoing areas of water research. Perovskite and perovskite-related materials, which have been largely explored in the energy sectors, are potential materials in water treatment technologies. In this review, attention is paid to the recent progress in the application of perovskite materials in photocatalytic and photoelectrocatalytic degradation of organic pollutants in water. Water treatment applications of lanthanum, ferrite, titanate, and tantalum (and others)-based perovskites are discussed. The chemical nature and different synthetic routes of perovskites or perovskite composites are presented as fundamental to applications.

show abstract

“…The mechanism, as investigated by Honorio et al [49] and Ong et al [50], is related to the interaction of the reactions described in the equations below (Equations ( 10)-( 20)). To summarize, it is possible that photogenerated electrons could react with O 2 to generate the anionic radical O •− 2 of superoxide and eventually the hydroxyl radical OH • .…”

Section: Photocatalytic Activation and Potential Mechanismmentioning

confidence: 99%

Research on the Sustainable Heterogeneous Catalyst Development for Photocatalytic Treatment of Phenol

Zhang

Wen-Rui

2021

Sustainability

View full text Add to dashboard Cite

A large amount of wastewater from various and discharged sources that are not treated in any way could affect properties of both land and water, causing severe problems for the environment. Advanced oxidation processes seem to be a feasible option to address effluent treatment with regard to salvation of the environment. In this work, a CdO/ZnO/Yb2O3 composite composed of trimetallic semiconductors was synthesized through a simple one-pot hydrophile approach at low temperatures and then was employed as a photocatalyst. The degradation of phenol, a common organic persistent pollutant in industrial wastewater, was efficiently catalyzed in the presence of simulated sunlight. It was demonstrated that the synthesized CdO/ZnO/Yb2O3 photocatalyst was significantly active after 15 min of reaction and facilitated the effective degradation of the phenol. The CdO/ZnO/Yb2O3 photocatalyst achieved 71.5% and 97.81% degradation of the phenol without and with the existence of H2O2, correspondingly. The results show that the synthesized composite possesses high oxygen reduction capability and is available for rapid and potent photodegradation of the organic persistent pollutants such as phenol, with minimal damage to the environment.

show abstract

Supporting the photocatalysts on ZrO2: An effective way to enhance the photocatalytic activity of SrSnO3

Cited by 38 publications

References 69 publications

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

A Brief Photocatalytic Study of ZnO Containing Cerium towards Ibuprofen Degradation

Perovskite Oxide–Based Materials for Photocatalytic and Photoelectrocatalytic Treatment of Water

Research on the Sustainable Heterogeneous Catalyst Development for Photocatalytic Treatment of Phenol

Contact Info

Product

Resources

About