Department of Convergence Technology Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
Department of Convergence Technology Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea; Eco-friendly Machine Parts Design Center, Chonbuk National University, Jeonju 561-756, Republic of Korea.
J Environ Sci (China). 2019 May;79:35-42. doi: 10.1016/j.jes.2018.10.008. Epub 2018 Oct 30.
Antimony-doped tin oxide (ATO) nanoparticles with an average size of ~ 6 nm were prepared by co-precipitation and subsequent heat treatment. Graphitic carbon nitride (g-CN)/ATO hybrid nanocomposite was designed by the combination of thermally synthesized g-CN and ATO nanoparticles by ultrasonication. The materials were characterized using N adsorption/desorption (BET), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR). A mixture of five volatile organic compounds (VOCs, chloroform, benzene, toluene, xylene and styrene) was used to compare the adsorption capacity of the samples. The adsorption capacity of ATO nanoparticles was improved by the addition of g-CN. Experimental data showed that, among the five VOCs, chloroform was the least adsorbed, regardless of the samples. The g-CN/ATO showed nearly three times greater adsorption capacity for the VOC mixture than pure ATO. The unchanged efficiency of VOC adsorption during cyclic use demonstrated the completely reversible adsorption and desorption behavior of the nanocomposite at room conditions. This economically and environmentally friendly material can be a practical solution for outdoor and indoor VOC removal.
通过共沉淀法和随后的热处理制备了平均尺寸约为 6nm 的掺锑氧化锡（ATO）纳米粒子。通过超声将热合成的 g-CN 和 ATO 纳米粒子结合，设计了石墨相氮化碳（g-CN）/ATO 杂化纳米复合材料。使用氮气吸附/解吸（BET）、X 射线衍射（XRD）、扫描电子显微镜（SEM）、能谱（EDS）、透射电子显微镜（TEM）和傅里叶变换红外光谱（FTIR）对材料进行了表征。使用五种挥发性有机化合物（VOCs，氯仿、苯、甲苯、二甲苯和苯乙烯）的混合物来比较样品的吸附能力。添加 g-CN 可提高 ATO 纳米粒子的吸附能力。实验数据表明，在这五种 VOCs 中，无论样品如何，氯仿的吸附量最少。g-CN/ATO 对 VOC 混合物的吸附容量比纯 ATO 高出近三倍。在循环使用过程中 VOC 吸附效率不变，证明了室温条件下纳米复合材料的吸附和解吸行为完全可逆。这种经济环保的材料可以成为户外和室内 VOC 去除的实用解决方案。
