Synergistic impacts of sonolysis aided photocatalytic degradation of water pollutant over perovskite-type CeNiO<sub>3</sub>nanospheres

Maridevaru, Madappa C.; Aljafari, Belqasem; Anandan, Sambandam; Ashokkumar, Muthupandian

doi:10.1039/d2nj01127a

Cited by 16 publications

(14 citation statements)

References 86 publications

(121 reference statements)

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“…To determine the structural information, the prepared samples were analyzed by XRD. Figure 2A shows the XRD patterns of the CeNiO 3 , CeNiO 3 @Ni‐foam, and materials project data of CeNiO 3 , well intense peaks confirm the crystalline nature of the CeNiO 3 material, which is in fine agreement with previously reported references 45‐47 . The peak obtained at 28.76° originates from CeO 2 .…”

Section: Resultssupporting

confidence: 86%

“…Observing Figure 2A, both CeNiO 3 (nanoparticle left on the Teflon beaker) and CeNiO 3 @Ni‐foam samples show similar peaks (except Ni‐foam substrate peak), which confirms the same phase of the CeNiO 3 nanomaterial. The peaks of CeNiO 3 indicate the orthorhombic structure with the Pnma space group 45‐47 . The photograph of the binder‐free electrode is represented in Figure S1A‐C.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks of CeNiO 3 indicate the orthorhombic structure with the Pnma space group. [45][46][47] The photograph of the binder-free electrode is represented in Figure S1A-C. The elemental configuration and valence states of the CeNiO 3 nanoparticle were examined using X-Ray photoelectron spectroscopy (XPS).…”

Section: Determination Of Crystal Structure and Oxidation Statesmentioning

confidence: 99%

“…Proper deposition method at elevated temperature or a coating strategy led to the formation of Ce‐Ni‐O phase 45 . Recently, perovskite CeNiO 3 receiving wide appreciation in a variety of scientific fields such as supercapacitor, absorber layer in photovoltaic cell, syn‐gas production, hydrogen production through water splitting, electrocatalysis, and photocatalysis 10,45‐47 …”

Section: Introductionmentioning

confidence: 99%

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Binder‐free synthesis of cerium nickel oxide for supercapattery devices

Harikrishnan

Bose

2022

Intl J of Energy Research

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High-performance supercapatteries have gained excellent research interest due to their high energy-power delivering capability, rapid charge/discharge, and prolonged cycle life. However, their low specific capacitance, poor rate capability, and inferior energy density of the electrode material constrained their practicality. In numerous energy storage devices, perovskite oxides achieve great importance due to their structural stability and electron conductivity. In the present work, binder-free CeNiO 3 (CNO) nanoparticles are grown on Ni-foam as a supercapattery electrode material. The CNO nanoparticles are successfully grown on Ni-foam as a current collector using a one-step hydrothermal method and an annealing process. This nanostructured perovskite oxide in the Ni-foam reduces the agglomeration and provides efficient pathways for fast charge transport. The synergistic effect, and varying valence states of Ce and Ni in the perovskite structure elucidate fast charge transfer kinetics. The CNO@Ni-foam electrode exhibits the highest specific capacity of 278 C g À1 at 1 A g À1 in a 6 M KOH electrolyte. Further, the constructed symmetric cell CNO//CNO operates at 1.55 V and exhibits high specific capacity (179.81 C g À1 ), high energy density (38.70 W h kg À1 ), and high-power density (7750 W kg À1 ) with long cycle durability (20 000 cycles). The supercapattery exhibits outstanding rate capability and good cyclic stability of 92% from its maximum specific capacity at a current density of 5 A g À1 .

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Determination Of Crystal Structure and Oxidation Statesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Binder‐free synthesis of cerium nickel oxide for supercapattery devices

Harikrishnan

Bose

2022

Intl J of Energy Research

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“…Interesting conversion (90%) was obtained for Rhodamine B while the antibiotic exhibited resistance to degradation after 60 min of reaction. In a very recent investigation, Maridevaru et al ( 2022 ) performed the sonophotocatalytic degradation of the dye Orange 7 over CeNiO 3 under UV light. Even with a very low pollutant initial concentration (9 mg/L) and a prolonged reaction time, only 74% degradation was reached.…”

Section: Resultsmentioning

confidence: 99%

Aqueous Acetamiprid Degradation Using Combined Ultrasonication and Photocatalysis Under Visible Light

Miyashiro

Hamoudi

2022

Water Air Soil Pollut

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Acetamiprid (ACE), a neonicotinoid pesticide widely used in pest control, was found in high concentrations in soils, rivers, and lakes. In the present study, ACE degradation was investigated using visible light driven photocatalysis over nitrogen-graphene oxide (N-GO) and palladium-graphene oxide (Pd-GO)–doped ZnO photocatalysts combined with ultrasonication implemented either as a pretreatment (sonolysis) or operated simultaneously with photocatalysis (sonophocatalysis). The effectiveness of the two ACE degradation processes was determined separately. The sonolysis pretreatment allowed reaching almost 40% acetamiprid conversion within 30 min of reaction. Pursuing with the photodegradation reaction in the presence of N-GO-ZnO and Pd-GO-ZnO resulted in a maximum conversion of 98% of ACE within 5 h. As for the sonophotocatalysis process, the reaction time was shortened from 5 to 2 h with 100% acetamiprid conversion. In addition, the photocatalysts were shown to keep their activity even after 5 sonophotocatalytic cycles, thus proving their reusability. Graphical abstract

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Ultrasound‐Assisted Advanced Oxidation Process Using Perovskite‐Type LaMnO₃ Nanospheres

Maridevaru,

Kaimal,

Selvaraj

et al. 2024

Chemistry An Asian Journal

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Among the perovskite oxide community, La‐based perovskites have garnered considerable interest due to their remarkable properties including catalytic, electrocatalytic, photocatalytic, sensing, electrical, magnetic, and optical characteristics. Herein, rhodamine‐B (RB) dye has been reported to be sono‐catalytically decomposed by an ultrasound‐assisted advanced oxidation process (AOP) using perovskite‐type LaMnO3 (LMO) nanospheres synthesized via ultrasonic approach. Several physiochemical characterizations such as XRD, FT‐IR, XPS, SEM, TEM, and SEM‐EDS investigations were used to investigate the LMO perovskite nanospheres. Then, LMO potential for adsorption and the sonocatalytic decolorization of RB dye in an aqueous solution are examined. With LMO perovskites, the adsorption and removal kinetics of RB correspond to the pseudo‐first‐order model. Furthermore, by utilizing the pseudo‐first‐order, the RB dye process is removed with improved efficacy in the following sequence: Agitation alone: 3.76 x 10‐4 min‐1 < US only: 5.02 x 10‐3 min‐1 < LMO only: 5.85 x 10‐3 min‐1 < LO@MO + US: 1.38 x 10‐2 min‐1 < LMO + US: 1.75 x 10‐2 min‐1, accordingly. Perovskite‐type LMO, which has significant reusability and stability, is an ensuring sonocatalyst for dye decomposition in wastewater, enabling faster decolorization. A prospective mechanism has been suggested for the sonocatalytic decomposition of RB.

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Synergistic impacts of sonolysis aided photocatalytic degradation of water pollutant over perovskite-type CeNiO₃nanospheres

Abstract: The current study reports on the preparation of perovskite-type CeNiO3 nanostructures as a sonophotocatalyst via a facile hydrothermal approach followed by annealing at 800 oC. The CeNiO3 catalyst was characterized...

Cited by 16 publications

References 86 publications

Binder‐free synthesis of cerium nickel oxide for supercapattery devices

Binder‐free synthesis of cerium nickel oxide for supercapattery devices

Aqueous Acetamiprid Degradation Using Combined Ultrasonication and Photocatalysis Under Visible Light

Ultrasound‐Assisted Advanced Oxidation Process Using Perovskite‐Type LaMnO₃ Nanospheres

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Synergistic impacts of sonolysis aided photocatalytic degradation of water pollutant over perovskite-type CeNiO3nanospheres

Abstract: The current study reports on the preparation of perovskite-type CeNiO3 nanostructures as a sonophotocatalyst via a facile hydrothermal approach followed by annealing at 800 oC. The CeNiO3 catalyst was characterized...

Cited by 16 publications

References 86 publications

Binder‐free synthesis of cerium nickel oxide for supercapattery devices

Binder‐free synthesis of cerium nickel oxide for supercapattery devices

Aqueous Acetamiprid Degradation Using Combined Ultrasonication and Photocatalysis Under Visible Light

Ultrasound‐Assisted Advanced Oxidation Process Using Perovskite‐Type LaMnO3 Nanospheres

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Product

Resources

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Synergistic impacts of sonolysis aided photocatalytic degradation of water pollutant over perovskite-type CeNiO₃nanospheres

Ultrasound‐Assisted Advanced Oxidation Process Using Perovskite‐Type LaMnO₃ Nanospheres