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首页> 外文期刊>Environmental research >Neodymium (Nd) based oxide perovskite nanostructures for photocatalytic and photoelectrochemical water splitting functions
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Neodymium (Nd) based oxide perovskite nanostructures for photocatalytic and photoelectrochemical water splitting functions

机译：基于钕（Nd）氧化物钙钙钛矿纳米结构，用于光催化和光电化学水分解功能

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摘要

Neodymium (Nd) based perovskite (Nd_(1-x)Co_xFeO_3) nanostructures were processed to address the rising energy and environment crisis through offering solutions by photocatalytic and photoelectrochemical (PEC) water splitting reactions. The impact of cobalt (Co) ions on the physicochemical properties of Nd-perovskites were studied using X-ray diffraction (XRD), Raman and electron microscopic instruments. The interaction of metal ions was studied in depth via X-ray photoelectron spectroscopy (XPS). Absorption and photoluminescence signals inferred the optical band gap to be lowered and defect states to increase upon Co substitution. Improved photocatalytic efficacy in Nd_(1-x)Co_xFeO_3 was evaluated by comparative studies using NdFeO_3. Secondly, the enhanced conductivities in Nd_(1-x)Co_xFeO_3 studied via Nyquist plot was found to be advantageous in photo-electrode fabrication for PEC functions. Time-dependent photocurrent density results affirmed the stability in processed devices. Co ions were also inferred to boost the separation of charge carriers effectively. The improved performance in Nd_(1-x)Co_xFeO_3 nanostructures were well justified to the successful incorporation of Co ions that sway the Nd-O, Co-O and Co-Fe-O bondings and boost the photon absorption and electronic conductivity to facilitate the observed performance.
机译：处理基于钕（Nd）的钙钛矿（ND_（1-x）CO_FEO_3）纳米结构，通过通过光催化和光电化学（PEC）水分解反应提供溶液来解决上升的能量和环境危机。使用X射线衍射（XRD），拉曼和电子显微镜仪器研究了钴（CO）离子对ND-PEROVSKITE的物理化学性质的影响。通过X射线光电子谱（XPS）深入地研究了金属离子的相互作用。吸收和光致发光信号推断光带间隙以降低和缺陷状态，以增加CO取代。通过使用NDFeO_3的比较研究评估了ND_（1-X）CO_FEO_3中改善了光催化功效。其次，发现通过奈奎斯特图研究的ND_（1-x）CO_FEO_3中的增强导电性在PEC功能的光电极制造中是有利的。时间依赖性光电流密度结果肯定了处理过的设备中的稳定性。还推断CO离子以有效地提高电荷载体的分离。 ND_（1-x）CO_FEO_3纳米结构的改善性能很好地掺入了摇摆ND-O，CO-O和CO-FE-O键合的CO离子，并提高光子吸收和电子电导率，以便于观察到的表现。

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  • 来源
    《Environmental research》 |2021年第2期|111128.1-111128.6|共6页
  • 作者

    P. Ilanchezhiyan; G. Mohan Kumar; C. Siva; H.D. Cho; D.J. Lee; N. Lakshmana Reddy; A.G. Ramu; T.W. Kang; D.Y. Kim;

  • 作者单位

    Quantum-Functional Semiconductor Research Center (QSRC) Dongguk University Jung-gu Seoul 04620 South Korea Nano-Information Technology Academy (NITA) Dongguk University Jung-gu Seoul 04620 South Korea;

    Quantum-Functional Semiconductor Research Center (QSRC) Dongguk University Jung-gu Seoul 04620 South Korea Nano-Information Technology Academy (NITA) Dongguk University Jung-gu Seoul 04620 South Korea;

    Department of Physics and Nanotechnology SRM Institute of Science and Technology Kattakulathur Tamil Nadu 603203 India;

    Quantum-Functional Semiconductor Research Center (QSRC) Dongguk University Jung-gu Seoul 04620 South Korea;

    Quantum-Functional Semiconductor Research Center (QSRC) Dongguk University Jung-gu Seoul 04620 South Korea;

    Division of Advanced Materials Engineering Research Center of Advanced Materials Development Jeonbuk National University Jeonju 54896 South Korea;

    School of Materials Science and Engineering Hongik University 2639 Sejong-ro Jochiwon-eup Sejong 30016 South Korea;

    Quantum-Functional Semiconductor Research Center (QSRC) Dongguk University Jung-gu Seoul 04620 South Korea Nano-Information Technology Academy (NITA) Dongguk University Jung-gu Seoul 04620 South Korea;

    Quantum-Functional Semiconductor Research Center (QSRC) Dongguk University Jung-gu Seoul 04620 South Korea;

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  • 正文语种 eng
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  • 关键词

    Perovskites; Nanostructures; Photocatalysis; Photoelectrochemical reactions;

    机译：Perovskites;纳米结构;光催化;光电化学反应;

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