采用改进Hummer法制备氧化石墨烯（ GO），以钛酸丁酯为前驱物，采用溶胶-凝胶法制备TiO2-GO光催化剂，利用光催化降解偏二甲肼（ UDMH）来检验其光催化活性，探讨GO的添加对TiO2晶型、粒径以及光催化活性的影响。结果表明，GO的添加不会改变TiO2的晶型，但会提高锐钛矿向金红石的相变温度，相变速度减缓，随着GO添加量增多，颗粒粒径减小，吸附性增强；TiO2-GO的光催化活性高于相同条件下制备的纯TiO2。%Graphene oxide is prepared by the improved Hummer method,and titanate-graphene oxide ( TiO2-GO)photocataIyst is synthesized. Using the experiment of photocataIytic degradation of UDMH to test its photocataIytic activity;Investigating the impact of GO added on TiO2 poIymorphs,particIe size and photocataIytic activity. ResuIts show that the addition of GO doesn’t change TiO2 crystaIIine form,but wiII increase the transformation temperature from anatase to rutiIe,sIowing the speed of the phase change;with the increasing amount of GO,the particIe size is reduced,the composite adsorbent enhanced;at the same time,the photocataIytic activity of TiO2-GO is higher than that of pure TiO2 prepared under the same con-ditions.
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