Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao tong University, Shanghai 200240, China.
Nanoscale Res Lett. 2011 Oct 3;6(1):536. doi: 10.1186/1556-276X-6-536.
ZnO nanowires are a promising nanomaterial for applications in the fields of photocatalysis, nano-optoelectronics, and reinforced composite materials. However, the challenge of producing large-scale ZnO nanowires has stunted the development and practical utilization of ZnO nanowires. In this study, a modified carbothermal reduction method for preparing large-scale ZnO nanowires in less than 5 min is reported. The preparation was performed in a quartz tube furnace at atmospheric pressure without using any catalysts. A mixed gas of air and N2 with a volume ratio of 45:1 was used as the reactive and carrier gas. About 0.8 g ZnO nanowires was obtained using 1 g ZnO and 1 g graphite powder as source materials. The obtained nanowires exhibited a hexagonal wurtzite crystal structure with an average diameter of about 33 nm. Good photocatalytic activity of the nanowires toward the photodegradation of methylene blue dye under UV irradiation was also demonstrated.
氧化锌纳米线是一种很有前途的纳米材料，可应用于光催化、纳米光电和增强复合材料等领域。然而，大规模制备氧化锌纳米线的挑战阻碍了氧化锌纳米线的发展和实际应用。在这项研究中，报道了一种在不到 5 分钟内用改进的碳热还原法制备大规模氧化锌纳米线的方法。该制备是在常压石英管式炉中进行的，没有使用任何催化剂。反应和载气采用体积比为 45:1 的空气和 N2 的混合气体。使用 1 g ZnO 和 1 g 石墨粉作为源材料，获得了约 0.8 g 的纳米线。所得纳米线具有六方纤锌矿晶体结构，平均直径约为 33nm。纳米线在紫外光照射下对亚甲基蓝染料的光降解表现出良好的光催化活性。
