Structural correlation of a nanoparticle-embedded mesoporous CoTiO<sub>3</sub> perovskite for an efficient electrochemical supercapacitor

Kitchamsetti, Narasimharao; Choudhary, R. J.; Phase, D. M.; Devan, Rupesh S.

doi:10.1039/d0ra04052e

Cited by 49 publications

(19 citation statements)

References 46 publications

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“…However, the less intense peak of Ti 3+ (2p 3/2 ) core levels proves the minor presence of Ti 3+ cations. The peak separation of 5.6 eV between the Ti(2p 3/2 ) and Ti(2p 1/2 ) core levels suggest Ti 4+ cations [ 18 , 19 , 31 ]. The compound peak characteristic for O(1s) XPS spectrum deconvoluted using Voigt fitting function ( Figure 3 (c)) revealed 2 peaks at a binding energy of 529.5 and 531.1 eV.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, perovskite oxides are contemplated to be an exhilarating group of visible-light photocatalytic materials in current times [ 16 ]. Perovskite oxides delivered excellent structural stability and flexibility to accommodate a wide range of cations with different oxidation states, which guided them for excellent catalytic activity and consequently for applications in photocatalysis [ 17 , 18 , 19 , 20 , 21 ]. Various research groups have explored the photocatalytic dye degradation activities of the perovskite materials such as ZnTiO 3 , SrTiO 3 , BaTiO 3 , NiTiO 3 , CoTiO 3 , and MnTiO 3 , respectively [ 20 , 22 , 23 , 24 , 25 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

Kitchamsetti

Didwal

Mulani

et al. 2021

Heliyon

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MTO nanodiscs synthesized using the hydrothermal approach were explored for the photocatalytic removal of methylene blue (MB), rhodamine B (RhB), congo red (CR), and methyl orange (MO). The disc-like structures of ~16 nm thick and ~291 nm average diameter of stoichiometric MTO were rhombohedral in nature. The MTO nanodiscs delivered stable and recyclable photocatalytic activity under Xe lamp irradiation. The kinetic studies showed the 89.7, 80.4, 79.4, and 79.4 % degradation of MB, RhB, MO, and CR at the rate constants of 0.011(±0.001), 0.006(±0.001), 0.007(±0.0007), and 0.009 (±0.0001) min −1 , respectively, after the 180 min of irradiation. The substantial function of photogenerated holes and hydroxide radicals pertaining to the dye removal phenomena is confirmed by radical scavenger trapping studies. Overall, the present studies provide a way to develop pristine and heterostructure perovskite for photocatalysts degradation of various organic wastes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

Kitchamsetti

Didwal

Mulani

et al. 2021

Heliyon

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“…In 2017, Lang et al studied Sr-doped lanthanum magnetite perovskite (La 1− x Sr x MnO 3 , LSM) materials that delivered ahigh specific capacitance (102 F g −1 @ 1 A g −1 ), which was due to the redox behavior of the anion-intercalation process (Mn 2+ /Mn 3+ and Mn 3+ /Mn) with long cycling life (5000 cycles) [ 50 ]. A meso porous, hexagonal-shaped cobalt titanate (CTO) has been explored as an efficient electrode material for supercapacitor applications, due to its tunable morphology, better capacitive behavior, and remarkable cyclic stability [ 51 ]. On the other hand, the non stoichiometric LaMn 1− x O 3 ( x = 0, 0.05 and 0.1) perovskite materials have been synthesized by the sol-gel method.…”

Section: Perovskite-based Nanocomposite In Supercapacitor Applicationsmentioning

confidence: 99%

High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview

Chen

Ramachandran²,

Anushya³

et al. 2021

Nanomaterials

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Perovskite-based electrode catalysts are the most promising potential candidate that could bring about remarkable scientific advances in widespread renewable energy-storage devices, especially supercapacitors, batteries, fuel cells, solid oxide fuel cells, and solar-cell applications. This review demonstrated that perovskite composites are used as advanced electrode materials for efficient energy-storage-device development with different working principles and various available electrochemical technologies. Research efforts on increasing energy-storage efficiency, a wide range of electro-active constituents, and a longer lifetime of the various perovskite materials are discussed in this review. Furthermore, this review describes the prospects, widespread available materials, properties, synthesis strategies, uses of perovskite-supported materials, and our views on future perspectives of high-performance, next-generation sustainable-energy technology.

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“…This behavior of Heusler‐type alloys is unlikely than what is observed in nanomaterials. Mesoporous cobalt titanate exhibits remarkably higher specific capacitance of 608.4 Fg −1 and a specific power of 4835.7 W kg −1 than those of Ti, La, Cr, Fe, Ni, and Sr based perovskites [32] …”

Section: Introductionmentioning

confidence: 97%

Phonon Scattering Mechanism for Size‐Dependent Thermoelectric Properties of Bi₂Te₃ Nanoparticles

Choudhary

Rathore²,

Dixit³

et al. 2022

ChemistrySelect

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The effect of nanoparticle size on thermoelectric properties of Bi 2 Te 3 nanoparticles is theoretically analysed using a phonon scattering mechanism. The size-dependent thermoelectric properties in Bi 2 Te 3 nanoparticles give an opportunity to tune the nanoparticles' size, which helps to optimize the figure of merit (ZT = S 2 σT/k). The thermoelectric effect in Bi 2 Te 3 nanoparticles is investigated using the phonon scattering effect. Reduction in nanoparticle size increases interface volume ratio, which increases the scattering of phonons with grain boundaries. An increase in phonon-grain boundary scatterings decreases the thermal conductivity (k) due to the shortening of the phonon mean free path. The Seebeck coefficient (S) and simultaneously ZT increase significantly because of a decrease in lattice thermal conductivity. The highest value of ZT = 0.45 is obtained at temperature T = 400 K for 150 nm Bi 2 Te 3 nanoparticles, which has been enhanced up to ZT = 0.92 by reducing the nanoparticles size up to 30 nm at the same temperatures. The results obtained from the present model are in good agreement with the experimental data and reflect that the thermoelectric properties are dominated by the phonon scattering mechanism and depend on the density of interfaces in the material. Numerical analysis of thermoelectric properties from the present investigation will help in designing efficient thermoelectric materials.

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Structural correlation of a nanoparticle-embedded mesoporous CoTiO₃ perovskite for an efficient electrochemical supercapacitor

Abstract: Interconnecting nanoparticle embedded mesoporous CTO rods (left panel), offered a significantly larger diffusion of OH− ions deep inside the rod structure and delivered a stable electrochemical performance with a specific capacitance of 608.4 F g−1 (right panel).

Cited by 49 publications

References 46 publications

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview

Phonon Scattering Mechanism for Size‐Dependent Thermoelectric Properties of Bi₂Te₃ Nanoparticles

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Structural correlation of a nanoparticle-embedded mesoporous CoTiO3 perovskite for an efficient electrochemical supercapacitor

Abstract: Interconnecting nanoparticle embedded mesoporous CTO rods (left panel), offered a significantly larger diffusion of OH− ions deep inside the rod structure and delivered a stable electrochemical performance with a specific capacitance of 608.4 F g−1 (right panel).

Cited by 49 publications

References 46 publications

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

Photocatalytic activity of MnTiO3 perovskite nanodiscs for the removal of organic pollutants

High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview

Phonon Scattering Mechanism for Size‐Dependent Thermoelectric Properties of Bi2Te3 Nanoparticles

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Structural correlation of a nanoparticle-embedded mesoporous CoTiO₃ perovskite for an efficient electrochemical supercapacitor

Phonon Scattering Mechanism for Size‐Dependent Thermoelectric Properties of Bi₂Te₃ Nanoparticles