尿素辅助的氧化铈纳米立方体用于从水体系中高效去除孔雀石绿有机染料。

Urea assisted ceria nanocubes for efficient removal of malachite green organic dye from aqueous system.

机构信息

School of Mechanical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.

Department of Instrumentation, Sri Venkateswara University, Tirupati, 517 502, India.

出版信息

Sci Rep. 2019 Oct 9;9(1):14477. doi: 10.1038/s41598-019-50984-6.

This study describes a simple, high-yield, rapid, and inexpensive route for the synthesis of cubic shape-like cerium oxide nanocubes (CeO NCs) using different urea concentrations (0.5, 1.0, and 2.0 g) by the hydrothermal method. The synthesized nanocubes (NCs) are labeled as CeO NCs-0.5, CeO NCs-1.0, and CeO NCs-2.0, corresponding to 0.5, 1.0, and 2.0 g of urea, respectively. The synthesized NCs were characterized by FT-IR, UV-visible, XRD, XPS, SEM and HR-TEM analysis. The synthesized NCs were cubic in shape with average sizes of 12, 12, and 13 nm for the CeO NCs-0.5, CeO NCs-1.0, and CeO NCs-2.0, respectively, obtained by the XRD analysis. The catalytic activity of the CeO NCs was studied for the purpose of obtaining the reduction of malachite green (MG) in the presence of sodium borohydride (NaBH) at room temperature.

本研究描述了一种使用不同浓度的尿素（0.5、1.0 和 2.0 g）通过水热法合成立方体形氧化铈纳米立方体形（CeO NCs）的简单、高产、快速且廉价的路线。所合成的纳米立方体形（NCs）分别标记为 CeO NCs-0.5、CeO NCs-1.0 和 CeO NCs-2.0，对应于 0.5、1.0 和 2.0 g 的尿素。通过 FT-IR、UV-可见、XRD、XPS、SEM 和 HR-TEM 分析对所合成的 NCs 进行了表征。通过 XRD 分析，所合成的 NCs 的形状为立方体形，平均尺寸分别为 12、12 和 13 nm，用于 CeO NCs-0.5、CeO NCs-1.0 和 CeO NCs-2.0。研究了 CeO NCs 的催化活性，目的是在室温下在硼氢化钠（NaBH）存在下还原孔雀石绿（MG）。