摘要
以石墨烯泡沫(GF)为基体、钛酸四丁酯(TBOB)为前驱物,采用回流法制备TiO_(2)/GF光催化复合材料;通过X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)、拉曼光谱等表征手段对复合材料的形貌、微观结构、物相和光谱特性进行分析;以甲基橙(MO)为模拟降解物,研究TBOB添加量对紫外光条件下复合材料光催化降解性能的影响。结果表明:泡沫镍上生长出的碳结构对复合材料光催化效果有一定影响,与碳纳米管-石墨烯混杂泡沫(CNT-GF)相比,GF的苯六元环结构和相对较大的比表面积更利于TiO_(2)的附着,TiO_(2)/GF的光催化效果优于TiO_(2)/CNT-GF;随着TBOB添加量增多,紫外光下TiO_(2)/GF复合材料对MO的降解率先增大后减小,当TBOB添加量为3 g时,MO的降解率最大,为81.7%,TBOB添加量过多会引起TiO_(2)团聚,光催化效果降低。
Using graphene foam(GF)as matrix and tetrabutyl titanate(TBOB)as precursor,TiO_(2)/GF composites are prepared by reflux method.The photodegradation properties of TiO_(2)/GF are comparatively studied,and the effect of TBOB content on composites is analyzed.The morphology,microstructure,phase and spectral characteristics of the composite samples are studied and analyzed by XRD,XPS,SEM,Raman spectra and other characterization methods.Methylene orange(MO)is used as a simulated degradation product to study the photocatalytic performance of composite materialunder UV light conditions.The results show that the carbon structure grown on nickel foam has a certain influence on the photocatalytic effect of the composites.Compared with carbon nanotube-graphene hybrid foam(CNT-GF),the benzene hexa ring structure and relatively large specific surface area of GF are more favorable for the attachment of TiO_(2),and the photocatalytic effect of TiO_(2)/GF is better than that of TiO_(2)/CNT-GF.The amount of TBOB added has a greater influence on the photocatalytic effect of the composites;with the increase of TBOB addition,the degradation of MO by TiO_(2)/GF composites under UV light first increases and then decreases.When the addition of TBOB is 3 g,the degradation rate of MO is the largest,81.7%.Too much TBOB addition would cause agglomeration,resulting in a lower photocatalytic effect.
作者
秦艳利
崔丹阳
赵光普
黄雨
QIN Yanli;CUI Danyang;ZHAO Guangpu;HUANG Yu(Shenyang Ligong University,Shenyang 110159,China;Institute of Metal Research,Chinese Academy of Science,Shenyang 110016,China)
出处
《沈阳理工大学学报》
CAS
2023年第3期61-67,共7页
Journal of Shenyang Ligong University
基金
国家自然科学基金项目(51871215)
辽宁省教育厅高等学校基本科研项目(LJKZ0238)。
