具有改善表面还原性的镍掺杂二氧化铈纳米颗粒的合成与表征
Synthesis and characterization of nickel-doped ceria nanoparticles with improved surface reducibility.
作者信息
Derafa Wassila, Paloukis Fotios, Mewafy Basma, Baaziz Walid, Ersen Ovidiu, Petit Corinne, Corbel Gwenaël, Zafeiratos Spyridon
机构信息
Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé (ICPEES), ECPM, UMR 7515 CNRS, Université de Strasbourg 25 rue Becquerel 67087 Strasbourg Cedex 02 France
Chemistry Department, College of Science, Jouf University P. O. Box: 2014 Sakaka Saudi Arabia.
出版信息
RSC Adv. 2018 Dec 5;8(71):40712-40719. doi: 10.1039/c8ra07995a. eCollection 2018 Dec 4.
Abstract
Nickel-doped ceria nanoparticles (NiCeO NPs) were fabricated from Schiff-base complexes and characterized by various microscopic and spectroscopic methods. Clear evidence is provided for incorporation of nickel ions in the ceria lattice in the form of Ni species which is considered as the hole trapped state of Ni. The NiCeO NPs exhibit enhanced reducibility in H as compared to conventional ceria-supported Ni particles, while in O the dopant nickel cations are oxidized at higher valence than the supported ones.
摘要
镍掺杂二氧化铈纳米颗粒（NiCeO NPs）由席夫碱配合物制备而成，并通过各种显微镜和光谱方法进行了表征。有明确证据表明镍离子以镍物种的形式掺入二氧化铈晶格中，该镍物种被认为是镍的空穴捕获态。与传统的二氧化铈负载镍颗粒相比，NiCeO NPs在氢气中表现出增强的还原性，而在氧气中，掺杂的镍阳离子被氧化到比负载态更高的价态。
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