通过简单的水热法可控合成单晶 CdO 和 Cd(OH)2 纳米线。

Controllable Synthesis of Single-Crystalline CdO and Cd(OH)2Nanowires by a Simple Hydrothermal Approach.

机构信息

Nanjing National Laboratory of Microstructures and Department of Physics, Nanjing University, 210093, Nanjing, People's Republic of China.

出版信息

Nanoscale Res Lett. 2010 Apr 11;5(6):961-5. doi: 10.1007/s11671-010-9589-y.

DOI:10.1007/s11671-010-9589-y

PMID:20672033

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2894330/

Abstract

Single-crystalline Cd(OH)2 or CdO nanowires can be selectively synthesized at 150 °C by a simple hydrothermal method using aqueous Cd(NO3)2 as precursor. The method is biosafe, and compared to the conventional oil-water surfactant approach, more environmental-benign. As revealed by the XRD results, CdO or Cd(OH)2 nanowires can be generated in high purity by varying the time of synthesis. The results of FESEM and HRTEM analysis show that the CdO nanowires are formed in bundles. Over the CdO-nanowire bundles, photoluminescence at ~517 nm attributable to near band-edge emission of CdO was recorded. Based on the experimental results, a possible growth mechanism of the products is proposed.

摘要

单晶硅 Cd(OH)2 或 CdO 纳米线可以在 150°C 下通过简单的水热法使用水溶液 Cd(NO3)2 作为前体选择性合成。该方法是生物安全的，与传统的油-水表面活性剂方法相比，更加环保。正如 XRD 结果所揭示的，通过改变合成时间，可以以高纯度生成 CdO 或 Cd(OH)2 纳米线。FESEM 和 HRTEM 分析的结果表明，CdO 纳米线以束的形式形成。在 CdO-纳米线束上，记录到了归因于 CdO 的近带边发射的约 517nm 的光致发光。基于实验结果，提出了一种可能的产物生长机制。