Synthesis of cerium oxide (IV) hollow nanospheres with tunable structure and their performance in the 4-nitrophenol adsorption

被引：27

作者：

Guzman, Mario ^{[1
]}

Estrada, Miguel ^{[2
]}

Miridonov, Serguei ^{[3
]}

Simakov, Andrey ^{[2
]}

机构：

[1] Ctr Invest Cient & Educ Super Ensenada, Posgrad Fis Mat, Carretera Ensenada,Tijuana 3918, Ensenada 22860, Baja California, Mexico

[2] Univ Nacl Autonoma Mexico, Dept Nanocatalisis, Ctr Nanociencias & Nanotecnol, Km 107 Carretera Tijuana Ensenada, Ensenada 22860, Baja California, Mexico

[3] Ctr Invest Cient & Educ Super Ensenada, Dept Opt, Carretera Ensenada,Tijuana 3918, Ensenada 22860, Baja California, Mexico

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2019年 / 278卷

基金：

芬兰科学院;

关键词：

Cerium oxide (IV); Hollow nanospheres; Adsorption; 4-Nitrophenol; Hydrothermal synthesis; P-NITROPHENOL; SURFACE-AREA; REMOVAL; NANOPARTICLES; KINETICS; MICROSPHERES; DIFFUSION; MODELS; WATER; DYE;

D O I：

10.1016/j.micromeso.2018.11.020

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Cerium oxide (IV) hollow nanospheres (@CeO2) were successfully synthesized via the hydrothermal method. Cerium nitrate and urea were used as a ceria precursor and as a hydrolyzing agent, respectively. Obtained @CeO2 nanospheres were characterized using TEM, N-2 physisorption, XRD, UV-Vis and Raman spectroscopy. The structural properties of @CeO2 nanospheres have been tuned by a variation of the urea/cerium nitrate weight ratio during the synthesis. The adsorption capacity of @CeO2 nanospheres was shown to be related to the size of ceria crystals forming nanospheres. Thus, the decrease of ceria crystal size permits to improve the efficiency in the adsorption of toxic 4-nitrophenol.

引用

页码：241 / 250

页数：10

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