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Issue 43, 2018
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Facile synthesis of porous spherical La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) and nanocubic La0.8Sr0.2MnO3 with high catalytic activity for CO

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Abstract

A molten salt method has been used to prepare porous La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) (LSMC-X) microspheres and La0.8Sr0.2MnO3 (LSM) nanocubes using spherical and cubic MnCO3 as templates, respectively. XRD patterns showed a single perovskite phase when the Cu content was less than x = 0.3. SEM and TEM images indicated that the porous microspheres comprised many aggregated nanoparticles, while the nanocubes were solid with a smooth surface. LSM and LSMC-0 samples both possessed high surface areas (63.5045 and 49.6504 m2 g−1, respectively). Furthermore, the CO conversions showed that LSMC-0.2 had the best catalytic activity (T50 = 83.63 °C, T90 = 97.40 °C) and good stability. XPS analysis confirmed that Cu2+ doping induced Mn4+ formation and slight changes in the oxygen species, leading to different catalytic activity. Owing to their facile synthesis and high catalytic performance, we propose that these porous spherical La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) and nanocubic La0.8Sr0.2MnO3 catalysts are promising candidates for CO oxidation.

Graphical abstract: Facile synthesis of porous spherical La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) and nanocubic La0.8Sr0.2MnO3 with high catalytic activity for CO

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Publication details

The article was received on 16 Jun 2018, accepted on 07 Oct 2018 and first published on 09 Oct 2018


Article type: Paper
DOI: 10.1039/C8CE01000E
Citation: CrystEngComm, 2018,20, 7020-7029

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    Facile synthesis of porous spherical La0.8Sr0.2Mn1−xCuxO3 (0 ≤ x ≤ 0.4) and nanocubic La0.8Sr0.2MnO3 with high catalytic activity for CO

    X. Huang, H. Pan, K. Chen, Z. Yin and J. Hong, CrystEngComm, 2018, 20, 7020
    DOI: 10.1039/C8CE01000E

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