文献类型：期刊文献

中文题名：石墨烯/Ni/TiO_(2)/CNTs复合物的制备及其光催化性能

英文题名：Synthesis of Graphene/Ni/TiO_(2)/CNTs Composites and Photocatalytic Activities

作者：吕慧[1];陈爱平[1];孙秀丽[1];唐骏[1];李春忠[1]

机构：[1]华东理工大学材料科学与工程学院,超细材料制备与应用教育部重点实验室,上海200237

年份：2014

卷号：29

期号：10

起止页码：1061

中文期刊名：无机材料学报

外文期刊名：Journal of Inorganic Materials

收录：CSTPCD;;Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000344821700010)】；北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：National Natural Science Foundation of China (2020619); Interdisciplinary and Major Project Foster Funds (wd1313009)

语种：中文

中文关键词：石墨烯;碳纳米管;二氧化钛;光催化

外文关键词：graphene;CNTs;TiO_(2);photocatalysis

摘要：首先通过溶剂热法,在石墨烯表面负载掺杂镍的纳米二氧化钛膜,制备石墨烯/Ni/TiO_(2)复合材料;然后以掺杂的镍为催化剂,采用化学气相沉积法,原位生长碳纳米管(CNTs),得到石墨烯/Ni/TiO_(2)/CNTs复合材料。通过XRD、SEM、TEM、拉曼等方法对制备样品的晶型、微观形貌等进行了表征,考察了样品在紫外光及可见光下对甲基橙的光催化降解性能。结果表明:石墨烯和CNTs的加入使得Ni/TiO_(2)、石墨烯/Ni/TiO_(2)、石墨烯/Ni/TiO_(2)/CNTs复合物的光催化活性依次提高,并且石墨烯/Ni/TiO_(2)/CNTs复合物中石墨烯含量越多时,所得复合物的光催化降解性能越好。石墨烯含量最大的石墨烯/Ni/TiO_(2)/CNTs样品,在紫外光下对甲基橙的降解率达到98%,在可见光下的光催化降解效率比掺镍TiO_(2)提高了3.5倍。
TiO_(2)nanoparticals doped with nickel were coated on graphene by solvo-thermal method.Then the CNTs were grown by in-situ chemical vapor deposition using nickel as catalyst.Finally,the graphene/Ni/TiO_(2)/CNTs nanocomposites was obtained.The prepared graphene/Ni/TiO_(2)/CNTs nanocomposite photocatalyst was characterized by X-ray diffraction,field emission scanning electron microscope,transmission electron microscope and Raman spectra.The photocatalytic activities of the samples were investigated by the photocatalytic degradation of methyl orange under UV and visible light.The results indicated that the photocatalytic activities increased from Ni/TiO_(2),graphene/Ni/TiO_(2),to graphene/Ni/TiO_(2)/CNTs by the addition of graphene and CNTs.And the photocatalytic activities of graphene/Ni/TiO_(2)/CNTs increased with the graphene amount increase.For the sample graphene/Ni/TiO_(2)/CNTs with the highest graphene content,its photocatalytic degradation of MO under UV irradiation reached 98%,and its photocatalytic degradation of MO under visible light irradiation was 3.5 fold higher than that of sample Ni/TiO_(2).