Mondal Kunal, Islam Monsur, Singh Srujan, Sharma Ashutosh
Department of Chemical Engineering, Indian Institute of Technology, Kanpur 208016, Uttar Pradesh, India.
Materials Science and Engineering Department, Energy and Environment Science and Technology Directorate, Idaho National Laboratory, Idaho Falls, ID 83415, USA.
Micromachines (Basel). 2022 Feb 20;13(2):335. doi: 10.3390/mi13020335.
Fabrication of porous materials from the standard sacrificial template method allows metal oxide nanostructures to be produced and have several applications in energy, filtration and constructing sensing devices. However, the low surface area of these nanostructures is a significant drawback for most applications. Here, we report the synthesis of ZnO/carbon composite monoliths in which carbon is used as a sacrificial template to produce zinc oxide (ZnO) porous nanostructures with a high specific surface area. The synthesized porous oxides of ZnO with a specific surface area of 78 m/g are at least one order of magnitude higher than that of the ZnO nanotubes reported in the literature. The crucial point to achieving this remarkable result was the usage of a novel ZnO/carbon template where the carbon template was removed by simple heating in the air. As a high surface area porous nanostructured ZnO, these synthesized materials can be useful in various applications including catalysis, photocatalysis, separation, sensing, solar energy harvest and Zn-ion battery and as supercapacitors for energy storage.
通过标准牺牲模板法制备多孔材料能够生产金属氧化物纳米结构，并且在能源、过滤和构建传感设备等方面有多种应用。然而，这些纳米结构的低表面积对于大多数应用来说是一个显著的缺点。在此，我们报告了ZnO/碳复合整体材料的合成，其中碳被用作牺牲模板来制备具有高比表面积的氧化锌（ZnO）多孔纳米结构。合成的比表面积为78 m²/g的ZnO多孔氧化物比文献中报道的ZnO纳米管至少高一个数量级。实现这一显著结果的关键在于使用了一种新型的ZnO/碳模板，其中碳模板通过在空气中简单加热即可去除。作为一种高表面积的多孔纳米结构ZnO，这些合成材料可用于包括催化、光催化、分离、传感、太阳能收集和锌离子电池等各种应用，以及作为能量存储的超级电容器。
