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通过热注射、无溶剂热解和刮刀法由黄原酸锰(II)合成的α-MnS纳米晶体和薄膜的结构研究

Structural Investigations of α-MnS Nanocrystals and Thin Films Synthesized from Manganese(II) Xanthates by Hot Injection, Solvent-Less Thermolysis, and Doctor Blade Routes.

作者信息

Alanazi Abdulaziz M, McNaughter Paul D, Alam Firoz, Vitorica-Yrezabal Inigo J, Whitehead George F S, Tuna Floriana, O'Brien Paul, Collison David, Lewis David J

机构信息

Department of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.

Department of Materials, University of Manchester, Oxford Road, Manchester M13 9PL, U.K.

出版信息

ACS Omega. 2021 Oct 11;6(42):27716-27725. doi: 10.1021/acsomega.1c02907. eCollection 2021 Oct 26.

DOI:10.1021/acsomega.1c02907
PMID:34722972
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8552351/
Abstract

Manganese(II) xanthate complexes of the form [Mn(SCOR)(TMEDA)], where TMEDA = tetramethylethylenediamine and R = methyl (), ethyl (), -propyl (), -butyl (), -pentyl (), -hexyl (), and -octyl (), have been synthesized and structures elucidated using single-crystal X-ray diffraction. Complexes - were used as molecular precursors to synthesize manganese sulfide (MnS). Olelyamine-capped nanocrystals have been produced hot injection, while the doctor blading followed by thermolysis yielded thick films. Free-standing polycrystalline powders of MnS are produced by direct thermolysis of precursor powders. All thermolysis techniques produced cubic MnS, as confirmed by powder X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Raman spectroscopy. Magnetic measurements reveal that the α-MnS nanocrystals exhibit ferromagnetic behavior with a large coercive field strength ( 0.723 kOe for 6.8 nm nanocrystals).

摘要

已合成了通式为[Mn(SCOR)(TMEDA)]的二硫代黄原酸锰(II)配合物,其中TMEDA = 四甲基乙二胺,R = 甲基()、乙基()、丙基()、丁基()、戊基()、己基()和辛基(),并通过单晶X射线衍射对其结构进行了阐释。配合物 - 被用作合成硫化锰(MnS)的分子前驱体。通过热注射制备了油胺包覆的纳米晶体,而刮刀法随后进行热解得到了厚膜。通过前驱体粉末的直接热解制备了MnS的自立多晶粉末。粉末X射线衍射、扫描电子显微镜、能量色散X射线光谱和拉曼光谱证实,所有热解技术均生成了立方MnS。磁性测量表明,α-MnS纳米晶体表现出铁磁行为,具有较大的矫顽场强(6.8 nm纳米晶体为0.723 kOe)。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ccab/8552351/fb1cda9b9c68/ao1c02907_0014.jpg
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