The CdS/CaTiO3 cubic core-shell composite towards enhanced photocatalytic hydrogen evolution and photodegradation

Yang, Hu; Li, Xinyan; Zhao, Tong; Peng, Qiying; Yang, Wenjing; Cao, Jun; Zheng, Yingying; Li, Chaorong; Pan, Jiaqi

doi:10.1016/j.ijhydene.2023.03.076

Cited by 11 publications

(2 citation statements)

References 57 publications

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“…3h presents the X-ray diffraction (XRD) patterns for CdS, CoTiO 3 , and a series of CdS@CoTiO 3 heterojunctions. For CdS and CoTiO 3 , all the diffraction peaks matched the respective standard cards (CdS, PDF#10-0454) 50 and (CoTiO 3 , PDF#15-0866). 51 As for the CdS@CoTiO 3 heterojunctions, not only were diffraction peaks corresponding to CoTiO 3 observed, but also peaks for CdS.…”

Section: Resultsmentioning

confidence: 62%

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO₃ nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Zheng,

Gao,

Wang

et al. 2024

Phys. Chem. Chem. Phys.

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Section: Resultsmentioning

confidence: 62%

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO₃ nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Zheng,

Gao,

Wang

et al. 2024

Phys. Chem. Chem. Phys.

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“…The results show a decrease in the absorption maximum as the time of exposure to UV radiation increases, which indicates the degradation of the pollutants. The kinetic mechanism most associated with photocatalysts with a composition similar to that of this work, acting on organic compounds, is the first-order linear mechanism [16,[80][81][82]. This model, also known as the "Langmuir−Hinshelwood mechanism" describes photocatalytic degradation, including the sorption effect.…”

Section: Mo and Lvf Degradation Kineticsmentioning

confidence: 81%

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Cerón-Urbano,

Aguilar,

Diosa

et al. 2023

Nanomaterials

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In this research work, the photocatalytic capacity shown by the nanoparticles of the CaTiO3 system was evaluated to degrade two pollutants of emerging concern, namely methyl orange (MO)—considered an organic contaminating substance of the textile industry that is non-biodegradable when dissolved in water—and levofloxacin (LVF), an antibiotic widely used in the treatment of infectious diseases that is released mostly to the environment in its original chemical form. The synthesis process used to obtain these powders was the polymeric precursor method (Pechini), at a temperature of 700 °C for 6 h. The characterization of the obtained oxide nanoparticles of interest revealed the presence of a majority perovskite-type phase with an orthorhombic Pbnm structure and a minority rutile-type TiO2 phase, with a P42/mnm structure and a primary particle size <100nm. The adsorption–desorption isotherms of the synthesized solids had H3-type hysteresis loops, characteristic of mesoporous solids, with a BET surface area of 10.01m2/g. The Raman and FTIR spectroscopy results made it possible to identify the characteristic vibrations of the synthesized system and the characteristic deformations of the perovskite structure, reiterating the results obtained from the XRD analysis. Furthermore, a bandgap energy of ~3.4eV and characteristic emissions in the violet (437 nm/2.8 eV) and orange (611 nm/2.03 eV) were determined for excitation lengths of 250 nm and 325 nm, respectively, showing that these systems have a strong emission in the visible light region and allowing their use in photocatalytic activity to be potentialized. The powders obtained were studied for their photocatalytic capacity to degrade methyl orange (MO) and levofloxacin (LVF), dissolved in water. To quantify the coloring concentration, UV–visible spectroscopy was used considering the variation in the intensity of the characteristic of the greatest absorption, which correlated with the change in the concentration of the contaminant in the solution. The results showed that after irradiation with ultraviolet light, the degradation of the contaminants MO and LVF was 79.4% and 98.1% with concentrations of 5 g/L and 10 g/L, respectively.

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Quenching-induced oxygen vacancy engineering boosts photocatalytic activities of CaTiO3

Li,

Wu,

Zhong

et al. 2024

Applied Surface Science

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The CdS/CaTiO3 cubic core-shell composite towards enhanced photocatalytic hydrogen evolution and photodegradation

Cited by 11 publications

References 57 publications

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO₃ nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO₃ nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Quenching-induced oxygen vacancy engineering boosts photocatalytic activities of CaTiO3

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The CdS/CaTiO3 cubic core-shell composite towards enhanced photocatalytic hydrogen evolution and photodegradation

Cited by 11 publications

References 57 publications

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO3 nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO3 nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Quenching-induced oxygen vacancy engineering boosts photocatalytic activities of CaTiO3

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Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO₃ nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC

Constructing hollow core–shell Z-scheme heterojunction CdS@CoTiO₃ nanorods for enhancing the photocatalytic degradation of 2,4-DCP and TC