Uniform Organically Modified CeO2 Nanoparticles Synthesized from a Carboxylate Complex under Supercritical Hydrothermal Conditions: Impact of Ce Valence
Uniform Organically Modified CeO2 Nanoparticles Synthesized from a Carboxylate Complex under Supercritical Hydrothermal Conditions: Impact of Ce Valence
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超临界水热条件下由羧酸盐配合物合成的均匀有机改性 CeO2 纳米颗粒：Ce 价态的影响
DOI：
10.1021/acs.jpcc.2c00088
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Adschiri Tadafumi
中科院分区：
文献类型：
--
作者：
Omura Yuki;Yoko Akira;Seong Gimyeong;Nishibori Maiko;Ninomiya Kakeru;Tomai Takaaki;Adschiri Tadafumi
在这项研究中，超临界水热合成氧化铈（CeO2）纳米粒子从铈羧酸配合物具有不同的价态进行。合成了辛酸铈（III）和辛酸铈（IV），并在400 °C下水热处理10 min。使用Ce L3边X射线吸收近边结构光谱确认了Ce价态。采用X射线衍射、傅里叶变换红外光谱和透射电子显微镜对水热处理产物进行了表征。当使用辛酸铈（III）作为前体时，主要形成氢氧化铈（III）（Ce（OH）3）纳米棒，而CeO2（IV）纳米颗粒作为次要产物形成。当使用辛酸铈（IV）时，直接合成了均匀的CeO2纳米颗粒。由辛酸铈（IV）合成的CeO2纳米颗粒比由先前报道的使用氢氧化铈（IV）Ce（OH）4的超临界水热法合成的那些更小且更均匀。
In this study, the supercritical hydrothermal synthesis of cerium oxide (CeO2) nanoparticles from a Ce–carboxylate complex with different valences was performed. Ce(III) and Ce(IV) octanoates were synthesized and hydrothermally treated at 400 °C for 10 min. The Ce valences were confirmed using Ce L3-edge X-ray absorption near-edge structure spectra. The hydrothermally treated products were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. When Ce(III) octanoate was used as the precursor, cerium(III) hydroxide (Ce(OH)3) nanorods were predominantly formed, whereas CeO2(IV) nanoparticles were formed as a minor product. When Ce(IV) octanoate was used, uniform CeO2nanoparticles were synthesized directly. The CeO2nanoparticles synthesized from Ce(IV) octanoate were smaller and more uniform than those synthesized by the previously reported supercritical hydrothermal method using cerium(IV) hydroxide Ce(OH)4.
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影响因子：
1.7
作者：
Barroso-Bogeat, Adrian;Nunez-Perez, Bernardo;Juan Calvino, Jose
通讯作者：
Juan Calvino, Jose
影响因子：
3.7
作者：
T. Mousavand;T. Naka;Koichi Sato;S. Ohara;M. Umetsu;S. Takami;T. Nakane;A. Matsushita;T. Adschiri
通讯作者：
T. Mousavand;T. Naka;Koichi Sato;S. Ohara;M. Umetsu;S. Takami;T. Nakane;A. Matsushita;T. Adschiri
使用近临界和超临界水通过连续工艺合成具有炔基的原位官能化氧化铁纳米粒子
影响因子：
3.9
作者：
M. D. D. Tercero;M. D. D. Tercero;I. Martínez;M. Herrmann;M. Bruns;C. Kübel;S. Jennewein;U. Fehrenbacher;Leonie Barner;Leonie Barner;M. Türk
通讯作者：
M. Türk
采用流通式水热合成法设计超临界水中的纳米颗粒
DOI：
--
发表时间：
2005
期刊：
Journal of the Society of Inorganic Materials, Japan 12
影响因子：
--
作者：
Kiwamu Sue;Kiwamu Sue;Kiwamu Sue;陶 究;Kiwamu Sue;Kiwamu Sue
通讯作者：
Kiwamu Sue