C60纳米晶须-SnO2纳米复合材料的制备及有机染料的光催化降解

Preparation of C60 Nanowhiskers-SnO2 Nanocomposites and Photocatalytic Degradation of Organic Dyes.

作者信息

Park Hae Soo, Ko Weon Bae

出版信息

J Nanosci Nanotechnol. 2015 Oct;15(10):8125-32. doi: 10.1166/jnn.2015.11249.

DOI:10.1166/jnn.2015.11249

Abstract

C60 nanowhiskers were prepared using a liquid-liquid interfacial precipitation (LLIP) method. Tin oxide (SnO2) nanoparticles were synthesized by a reaction of tin (IV) chloride pentahydrate with ammonium nitrate in an electric furnace. The C60 nanowhiskers-SnO2 nanocomposites were calcined in an electric furnace at 700 °C under an inert argon gas atmosphere for 2 h. The crystallinity, morphology and optical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy and UV-vis spectrophotometry. The photocatalytic activity of the C60 nanowhiskers-SnO2 nanocomposites in the degradation of the organic dyes, such as methylene blue, methyl orange, rhodamine B, and brilliant green, under ultraviolet light at 254 nm by UV-vis spectrophotometry was evaluated and compared with that of C60 nanowhiskers and SnO2 nanoparticles. The experimental results showed that C60 nanowhiskers-SnO2 nanocomposites exhibited remarkably higher photocatalytic degradation of organic dyes compared to C60 nanowhiskers and SnO2 nanoparticles.

摘要

采用液-液界面沉淀（LLIP）法制备了C60纳米晶须。通过五水合四氯化锡与硝酸铵在电炉中反应合成了氧化锡（SnO2）纳米颗粒。将C60纳米晶须-SnO2纳米复合材料在电炉中于700℃、惰性氩气气氛下煅烧2小时。通过X射线衍射、扫描电子显微镜、透射电子显微镜、拉曼光谱和紫外-可见分光光度法对样品的结晶度、形态和光学性质进行了表征。通过紫外-可见分光光度法评估了C60纳米晶须-SnO2纳米复合材料在254nm紫外光下对亚甲基蓝、甲基橙、罗丹明B和亮绿等有机染料的光催化降解活性，并与C60纳米晶须和SnO2纳米颗粒进行了比较。实验结果表明，与C60纳米晶须和SnO2纳米颗粒相比，C60纳米晶须-SnO2纳米复合材料对有机染料的光催化降解活性显著更高。