溶剂热合成具有特殊形貌的介孔WO3材料及其吸附性能

doi:10.3724/SP.J.1095.2013.20515

摘要/Abstract

摘要： 以钨酸钠为钨源，水和乙醇混合溶液为溶剂，聚环氧乙烷-聚环氧丙烷聚环氧乙烷三嵌段共聚物(P123)为结构导向剂和致孔剂，采用前驱体路线和溶剂热法合成了具有特殊形貌的介孔WO3，同时讨论了不同温度和时间对样品形貌的影响。利用XRD、SEM、TEM、N2吸附-脱附、UV和TG等手段对样品进行了分析表征。研究结果表明，所合成的WO3材料具有介孔结构和较大的比表面积，溶剂热时间的增加和反应温度的升高，均有利于WO3晶粒的长大和形貌的变化。材料对罗丹明B染料水溶液呈现了较好的吸附性能，去除率最高可达93.13%。

关键词: 溶剂热, 特殊形貌, 介孔, 氧化钨, 吸附性能

Abstract: With the sodium tungstate as tungsten source, the mixture of water and alcohol solution as solvent, and triblock copolymer of ethylene oxide with propylene oxide(P123) as structure directing agent and porogen, mesoporous WO3 of special morphology was synthesized by precursor route and solvothermal method, and meanwhile the influence of different reaction time and temperature were also discussed. These samples were characterized and analyzed by the X-ray diffraction(XRD), scanning electron microscope(SEM), transmission electric microscope(TEM), N2 adsorption-desorption, UV-visible spectroscopy, and the thermo gravimetric(TG). The results show that the as-prepared WO3 materials possess mesoporous structure and large specific surface area, moreover, the increasing of the solvothermal time and reaction temperature are beneficial to the size enlargement and also the morphology variance of the WO3 particles. Absorption test of the synthesized mesoporous WO3 materials for rhodamine B dye in aqueous solution was also performed, and a good adsorption performance with a removal efficiency of 93.13% was achieved.

Key words: solvothermal method, special morphology, mesoporous, tungsten oxide, adsorption performance

中图分类号:

O614.6

吕仁江, 张福祥, 李英杰, 王立娜, 吴婧, 丁莉. 溶剂热合成具有特殊形貌的介孔WO₃材料及其吸附性能[J]. 应用化学, DOI: 10.3724/SP.J.1095.2013.20515.

LV Renjiang, ZHANG Fuxiang, LI Yingjie*, WANG Lina, WU Jing, DING Li. Solvothermal Synthesis of Mesoporous Tungsten Oxide Materials with Special Morphology and Their Adsorptive Properties[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2013.20515.

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溶剂热合成具有特殊形貌的介孔WO₃材料及其吸附性能

Solvothermal Synthesis of Mesoporous Tungsten Oxide Materials with Special Morphology and Their Adsorptive Properties

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