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[1]陆乃彦,张亚强,吴世嘉*.还原氧化石墨烯-TiO2复合纳米材料制备与光催化性能[J].南京大学学报(自然科学),2016,52(6):1097.[doi:10.13232/j.cnki.jnju.2016.06.013]
 Lu Naiyan,Zhang Yaqiang,Wu Shijia*.Preparation and photocatalytic properties of reduced graphene oxide­TiO2 nanocomposites[J].Journal of Nanjing University(Natural Sciences),2016,52(6):1097.[doi:10.13232/j.cnki.jnju.2016.06.013]
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还原氧化石墨烯-TiO2复合纳米材料制备与光催化性能
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《南京大学学报(自然科学)》[ISSN:0469-5097/CN:32-1169/N]

卷:
52
期数:
2016年第6期
页码:
1097
栏目:
出版日期:
2016-12-01

文章信息/Info

Title:
Preparation and photocatalytic properties of reduced graphene oxide­TiO2 nanocomposites
作者:
 陆乃彦12张亚强1吴世嘉12*
1.江南大学食品学院,无锡,214122;2.江苏省食品安全与质量控制协同创新中心,无锡,214122
Author(s):
 Lu Naiyan12Zhang Yaqiang1Wu Shijia12*
1.School of Food Science and Technology,Jiangnan University,Wuxi,214122,China;
2.Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province,Wuxi,214122,China
关键词:
 光催化降解还原氧化石墨烯二氧化钛抑 菌
Keywords:
 photocatalytic degradationreduced graphene oxidetitanium oxideantimicrobial
分类号:
O643.3
DOI:
10.13232/j.cnki.jnju.2016.06.013
文献标志码:
A
摘要:
利用新型碳材料还原氧化石墨稀对TiO2进行改性,以期提高TiO2的光催化活性.采用溶剂热法,以氧化石墨烯(GO)和钛酸四丁酯(Ti(OBu)4)为原料,成功制备了不同还原氧化石墨烯含量的RGO/TiO2纳米复合材料.运用XRD、TEM、FT­IR和UV­vis等手段研究了复合材料的性质,同时以甲基橙(Methyl Orange,MO)为模型,评价了不同反应条件下制备的复合物的光催化性能,讨论了不同还原氧化石墨烯含量、催化时间等对复合物的光催化性能的影响.在甲基橙评价模型基础上,将制得的具有最佳光催化性能的RGO/TiO2复合材料进行致病大肠杆菌的抗菌实验,以此来检验RGO/TiO2纳米复合材料的抗菌效果.实验结果表明,采用溶剂热法在180 ℃下煅烧6 h制得RGO/TiO2纳米复合材料,锐钛矿相TiO2通过C-O-Ti键均匀地分布在片层还原氧化石墨烯载体上.RGO/TiO2复合材料对甲基橙溶液的降解率明显高于纯纳米TiO2.当制备复合材料时GO的初始投加量为40 mg时,制得的RGO/TiO2复合材料对甲基橙的降解率达到50%.同时,该RGO/TiO2纳米复合材料对致病大肠杆菌有明显的抗菌作用.
Abstract:
The photocatalytic degradation of organic compounds has attracted great attention.In this work,the photocatalytic activity of TiO2 was significantly improved via modification with reduced graphene oxide(RGO).The RGO/TiO2 nanocomposite,with varying RGO contents,was firstly fabricated by a solvothermal method.X­ray diffraction,high resolution transmission electron microscopy,Fourier transform infrared spectroscopy and UV­Vis spectroscopy were performed to characterize the structure and property of the as­prepared RGO/TiO2 nanocomposite.Based on a methyl orange model,the influence from different factors,including the RGO content and catalytic time,on photocatalytic activities as well as anti­Escherichia coli ability of the RGO/TiO2 nanocomposite,was investigated.The results show the binding between TiO2 nanostructures and RGO planes with C-O-Ti bonds within the nanocomposite after being calcined at 180 °C for 6 h.The RGO/TiO2 nanocomposites consisting of an initial adding amount of 40 mg GO during synthesis process have a most enhanced photocatalytic degradation efficiency of as high as 50%.This might be due to the great adsorptivity of dyes,extended light absorption range and efficient charge separation properties.Also,a much improved anti­Escherichia coli ability of 93% was achieved by the same RGO/TiO2 nanocomposites.This work provides a new approach for the fabrication of TiO2­based nanocomposite as visible­light photocatalyst of high performance,and facilitates its application for photocatalytic degradation of organic compounds.

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相似文献/References:

备注/Memo

备注/Memo:
基金项目:粮食公益性行业科研专项(201513006-03),国家自然科学基金(31401589,31401576),江苏省食品安全与质量控制协同创新中心项目
收稿日期:2016-07-18
*通讯联系人,E­mail:wusj1986@163.com
更新日期/Last Update: 2016-11-21