Hossain Muhammad Mohsin, Islam Md Akherul, Shima Hossain, Hasan Mudassir, Hilal Muhammad, Lee Moonyong
Department of Energy and Materials Engineering, Dongguk University Seoul 04620 Republic of Korea 712-749.
Department of Pharmacy, Atish Dipankar University of Science & Technology Banani Dhaka 1213 Bangladesh.
RSC Adv. 2018 May 9;8(30):16927-16936. doi: 10.1039/c8ra03016b. eCollection 2018 May 3.
Zinc acetate is recrystallized as lumber-shaped tetragonal rods by a novel recrystallization technique. Subsequently, the recrystallized zinc acetate is converted into ZnO nanorods in a glass vial by the simplest and cheapest method without utilizing any expensive instrumentation. Carbon is doped in ZnO nanorods during the preparation ZnO nanorods without any extra steps, chemicals, or effort. The carbon-doped ZnO nanorods can be dispersed in a solvent at very high concentrations and are also stable for a very long time, which are comparatively higher than those of the other existing ZnO nanoparticles. The higher dispersion concentration and higher stability of ZnO nanoparticles are explained by a scheme that demonstrates the suspending mechanism of the ZnO nanoparticles at higher concentrations with higher stabilities in a solvent through the anchoring groups of carbon. No materials are used for surface modification; no surface coatings, ionic materials, or pH controlling materials are used to increase the dispersion concentration and stability. This is the first observation of the doped carbon playing a significant role in the dispersion of ZnO nanoparticles at higher concentrations by withholding them in the solvent. Therefore, doped carbon at the surface of ZnO nanoparticles prevents the self-aggregation of ZnO nanoparticles in the solution phase by interfacial barrier layers among ZnO nanorods and interfacial interactive layer between ZnO nanorod and solvent.
通过一种新颖的重结晶技术，醋酸锌被重结晶为木材形状的四方棒。随后，通过最简单且最便宜的方法，在玻璃小瓶中将重结晶的醋酸锌转化为ZnO纳米棒，无需使用任何昂贵的仪器设备。在制备ZnO纳米棒的过程中，无需任何额外步骤、化学品或努力，就能将碳掺杂到ZnO纳米棒中。碳掺杂的ZnO纳米棒能够以非常高的浓度分散在溶剂中，并且在很长时间内都保持稳定，这相较于其他现有的ZnO纳米颗粒而言是比较高的。ZnO纳米颗粒较高的分散浓度和较高的稳定性可以通过一个示意图来解释，该示意图展示了ZnO纳米颗粒在溶剂中通过碳的锚固基团以较高浓度和较高稳定性悬浮的机制。未使用任何材料进行表面改性；未使用表面涂层、离子材料或pH控制材料来提高分散浓度和稳定性。这是首次观察到掺杂的碳通过将ZnO纳米颗粒保留在溶剂中，在较高浓度下对其分散发挥重要作用。因此，ZnO纳米颗粒表面的掺杂碳通过ZnO纳米棒之间的界面阻挡层以及ZnO纳米棒与溶剂之间的界面相互作用层，防止了ZnO纳米颗粒在溶液相中发生自聚集。
