矿化剂浓度对水热合成La1-XCexCrO3晶体的形貌影响

doi:10.16039/j.cnki.cn22-1249.2021.11.007

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摘要

通过低温水热方法合成了Ce掺杂的钙钛矿结构LaCrO₃单晶样品，样品具有很好的结晶度，矿化剂KOH的浓度会影响样品的形貌。在相同La:Ce:Cr投料比情况下，分别加入3、4、5、6和7g KOH得到了中空状、锐角状、光滑状、表面颗粒起伏状以及表面多孔状的立方块。X-射线光电子能谱数据表明Ce主要以+4价存在，而相应的出现了微量的Cr²⁺。对于Ce掺杂的LaCrO₃的合成和应用研究具有重要的指导和借鉴意义。

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	王珊
	张天明

关键词: 钙钛矿结构铬酸盐水热合成粉末X-射线衍射 xps

Abstract:

Ce-doped LaCrO₃ samples were synthesized by mild hydrothermal method. The samples show good crystallinity. Sample morphology can be affected by the concentration of mineralizer (KOH). With the same starting chemicals ratio of La:Ce:Cr, hollow, rectangle, smooth, roughed and porous cubics could be resulted when 3, 4, 5, 6 and 7 g KOH was added in the reactive mixture. According to XPS results, Ce is mainly +4, and minor Cr²⁺ occurred in the samples. This research is important to the synthesis and application of Ce-doped LaCrO₃ materials.

Key words: perovskite structure chromites hydrothermal synthesis powder X-ray diffraction XPS

出版日期: 2021-11-25 发布日期: 2021-11-25 整期出版日期: 2021-11-25

0614.23

引用本文:

王珊, 张天明. 矿化剂浓度对水热合成La_1-XCexCrO₃晶体的形貌影响 [J]. 吉林化工学院学报, 2021, 38(11): 33-38.
WANG Shan, ZHANG Tianming. Effect of Mineralizer Concentration on the Morphology of Hydrothermally Synthesized La_1-XCexCrO₃ Crystals . Journal of Jilin Institute of Chemical Technology, 2021, 38(11): 33-38.

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https://xuebao.jlict.edu.cn/CN/10.16039/j.cnki.cn22-1249.2021.11.007 或 https://xuebao.jlict.edu.cn/CN/Y2021/V38/I11/33

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