摘要
采用一步水热法原位诱导合成TiO_2/石墨烯复合催化剂,通过X射线衍射(XRD),傅里叶变换红外光谱(FT-IR),扫描电镜(SEM),透射电镜(TEM),拉曼光谱(Raman),紫外可见吸收光谱(UV-Vis)表征复合催化剂的晶体结构、官能团强弱、微观形貌和光学特性。以葡萄糖(glucose)、十二烷基硫酸钠(SDS)、聚乙烯吡咯烷酮(PVP)为诱导助剂,研究其对复合催化剂形貌和光催化降解甲基橙(MO)活性的影响。结果表明:以葡萄糖和十二烷基硫酸钠为诱导助剂合成的复合催化剂活性最高,紫外光照射30min,MO降解率可达92%,而商用P25降解率达到90%需要120min,同时以聚乙烯吡咯烷酮为诱导助剂合成的复合催化剂和TiO_2/石墨烯自组装形成的复合材料光催化活性差别不大。
The TiO2/reduced graphene oxide composite,synthesized by a facile one-pot hydrothermal method,was characterized with X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,Fourier transform infrared spectroscopy（FT-IR）,Raman spectrum,and ultraviolet-visible（UV-Vis）spectroscopy to observe the crystal structure,intensity of functional group,microstructure and optical property.The composite material was synthesized by using glucose,sodium dodecyl sulfate（SDS）,polyvinylpyrrolidone（PVP）as inducing agents,respectively.The structure and photocatalytic activity for degradation of methyl orange（MO）of the composite were investigated.The results reveal that the composite induced by glucose and SDS shows the highest activity,whose degradation rate can be up to 92%in 30 min.However,120 minutes is necessary for the commercial P25 to remove 90% methyl orange（MO）.Compared with the composite prepared by self-assembly with no inducing agent,there are no obvious difference existing in the one induced by polyvinylpyrrolidone（PVP）in terms of photocatalytic reactivity.
作者
周铁路
刘会娥
陈爽
丁传芹
齐选良
ZHOU Tie-lu;LIU Hui-e;CHEN Shuang;DING Chuan-qin;QI Xuan-liang(State Key Laboratory of Heavy Oil Processing,China University of Petroleum（East of China）,Qingdao 266580,Shandong,Chin)
出处
《材料工程》
EI
CAS
CSCD
北大核心
2018年第8期43-50,共8页
Journal of Materials Engineering
基金
山东省自然科学基金(ZR2017MB015)
重质油国家重点实验室资助项目(SLKZZ-2017002)
中国石油科技创新基金(2017D-5007-0601)
