Enhanced visible light photocatalytic activity of porous LaMnO 3  sub-micron particles in the degradation of rose bengal

Kumar, Selvaraj Rajesh; Abinaya, Chandrasekaran; Amirthapandian, S.; Ponpandian, N.

doi:10.1016/j.materresbull.2017.05.024

Cited by 29 publications

(7 citation statements)

References 65 publications

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“…An urchin-like La 0.8 Sr 0.2 MnO 3 perovskite oxide with a high specific surface area of 48 m 2 •g −1 has been synthesized via a co-precipitation method [21]. Highly porous LaMnO 3 particles were prepared with polyvinylpyrrolidone (PVP) as a structure directing agent, showing a specific surface area of 47.13 m 2 •g −1 [22]. In addition, a series of perovskite oxides with fiber morphology have been prepared by electrospinning process, displaying great potential as electrode materials of supercapacitors [23,24].…”

Section: Introductionmentioning

confidence: 99%

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Pian

Lei

et al. 2019

Nanomaterials

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La-based perovskite-type oxide is a new type of supercapacitor electrode material with great potential. In the present study, LaMnO3/MnO (LMO/MnO) nano-arrays supported by carbon cloth are prepared via a simple one-step electrodeposition as flexible supercapacitor electrodes. The structure, deposit morphology of LMO/MnO, and the corresponding electrochemical properties have been investigated in detail. Carbon cloth-supported LMO/MnO electrode exhibits a specific capacitance of 260 F·g−1 at a current density of 0.5 A·g−1 in 0.5 M Na2SO4 aqueous electrolyte solution. The cooperative effects of LMO and MnO, as well as the uniform nano-array morphology contribute to the good electrochemical performance. In addition, a symmetric supercapacitor with a wide voltage window of 2 V is fabricated, showing a high energy density of 28.15 Wh·kg−1 at a power density of 745 W·kg−1. The specific capacitance drops to 65% retention after the first 500 cycles due to the element leaching effect and partial flaking of LMO/MnO, yet remains stable until 5000 cycles. It is the first time that La-based perovskite has been exploited for flexible supercapacitor applications, and further optimization is expected.

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Section: Introductionmentioning

confidence: 99%

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Pian

Lei

et al. 2019

Nanomaterials

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“…The optical bandgap of La‐based perovskites is dependent on their chemical composition. Literature values for pure LaCoO 3 are in the range of 2.00–2.41 eV, [ 24–27 ] for pure LaMnO 3 in the range of 1.6–3 eV, [ 28–31 ] and for pure LaFeO 3 in the range of 2.15–2.5 eV. [ 32–34 ] The observed variation in bandgap energy within one material might be caused by different factors.…”

Section: Resultsmentioning

confidence: 99%

Combinatorial Sputter Synthesis of Single‐Phase La(XYZ)O_3 ± σ Perovskite Thin‐Film Libraries: A New Platform for Materials Discovery

et al. 2023

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Compositionally complex perovskites provide the opportunity to develop stable and active catalysts for electrochemical applications. The challenge lies in the identification of single‐phase perovskites with optimized composition for high electrical conductivity. Leveraging a recently discovered effect of self‐organized thin film growth during reactive sputtering, La–Co–Mn–O and La–Co–Mn–Fe–O perovskite (ABO3) thin‐film materials libraries are synthesized. These show phase‐pure La perovskites over a wide range of chemical composition variation for the B‐site elements for deposition temperatures ≥300 °C. It is demonstrated that this approach enables the discovery and tailoring of chemical compositions for desired optical bandgap and electrical conductivity and thereby opens the path for the targeted development of, for example, new high‐performance electrocatalysts.

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“…One widely researched nanoscale morphology of perovskite oxides is the nanoporous structure (figure 10). Nanoporous LaMnO 3 exhibited enhanced performance in photocatalytic organic dye degradation, when compared to other photocatalysts [128]. However, the authors stated that better crystallinity along with higher surface area of their catalyst could further improve the photocatalytic performance of their catalyst.…”

Section: Microwave Methodsmentioning

confidence: 96%

A review on photocatalytic CO₂reduction using perovskite oxide nanomaterials

et al. 2018

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As the search for efficient catalysts for CO photoreduction continues, nanostructured perovskite oxides have emerged as a class of high-performance photocatalytic materials. The perovskite oxide candidates for CO photoreduction are primarily nanostructured forms of titanates, niobates, tantalates and cobaltates. These materials form the focus of this review article because they are much sought-after due to their nontoxic nature, adequate chemical stability, and tunable crystal structures, bandgaps and surface energies. As compared to conventional semiconductors and nanomaterial catalysts, nanostructured perovskite oxides also exhibit an extended optical-absorption edge, longer charge carrier lifetimes, and favorable band-alignment with respect to reduction potential of activated CO and reduction products of the same. While CO reduction product yields of several hundred μmol h are observed with many types of perovskite oxide nanomaterials in stand-alone forms, yield of such quantities are not common with semiconductor nanomaterials of other types. In this review, we present current state-of-the-art synthesis methods to form perovskite oxide nanomaterials, and procedures to engineer their bandgaps. This review also presents a comprehensive summary and discussion on crystal structures, defect distribution, morphologies and electronic properties of the perovskite oxides, and correlation of these properties to CO photoreduction performance. This review offers researchers key insights for developing advanced perovskite oxides in order to further improve the yields of CO reduction products.

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Enhanced visible light photocatalytic activity of porous LaMnO 3 sub-micron particles in the degradation of rose bengal

Cited by 29 publications

References 65 publications

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Combinatorial Sputter Synthesis of Single‐Phase La(XYZ)O_3 ± σ Perovskite Thin‐Film Libraries: A New Platform for Materials Discovery

A review on photocatalytic CO₂reduction using perovskite oxide nanomaterials

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Enhanced visible light photocatalytic activity of porous LaMnO 3 sub-micron particles in the degradation of rose bengal

Cited by 29 publications

References 65 publications

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Combinatorial Sputter Synthesis of Single‐Phase La(XYZ)O3 ± σ Perovskite Thin‐Film Libraries: A New Platform for Materials Discovery

A review on photocatalytic CO2reduction using perovskite oxide nanomaterials

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Combinatorial Sputter Synthesis of Single‐Phase La(XYZ)O_3 ± σ Perovskite Thin‐Film Libraries: A New Platform for Materials Discovery

A review on photocatalytic CO₂reduction using perovskite oxide nanomaterials