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在碱性条件下由氧化石墨(GO)还原获得还原石墨烯(RGO).RGO与4-二苯胺基苯甲醇(TPACH2OH)混合后发生相互作用,得到功能化石墨烯复合物(TPACH2OH-RGO).采用密度泛函理论(DFT)对TPACH2OH-RGO模拟计算结果表明,TPACH2OH和RGO之间主要通过氢键作用形成复合物.利用紫外-可见光谱(UV-vis)、拉曼光谱(Raman)、荧光光谱(Fluorescence)、原子力显微镜(AFM)、透射电子显微镜(TEM)和电化学等方法研究了TPACH2OH-RGO结构和光电性质,并研究了以TPACH2OH-RGO为催化剂在光照射下光催化分解水制氢性能.实验结果表明:光照下复合物中激发态TPACH2OH向RGO转移电子.在TPACH2OH和RGO的质量比为4/3,体系pH=6条件下,光照6 h,TPACH2OH-RGO的产氢总量达到35.0μmol,比RGO的产氢总量(20.4μmol)有明显的提高.
Reduced graphene (RGO) was obtained by the reduction of graphite oxide (GO) under basic conditions. The interaction between RGO and 4-diphenylaminobenzyl alcohol (TPACH2OH) resulted in the functionalized graphene composite (TPACH2OH-RGO) The calculated results of TPACH2OH-RGO using density functional theory (DFT) showed that the complex formed mainly through hydrogen bonding between TPACH2OH and RGO.The structure of TPACH2OH and RGO were characterized by UV-vis, Raman, Fluorescence, atomic force microscopy (AFM), transmission electron microscopy (TEM) and electrochemical methods were used to study the structure and optical properties of TPACH2OH-RGO. The photocatalytic degradation of TPACH2OH-RGO with TPACH2OH-RGO as catalyst The results show that the excited TPACH2OH transfers electron to RGO in the complex under light irradiation.When the mass ratio of TPACH2OH and RGO is 4/3 and pH = 6, the hydrogen production of TPACH2OH-RGO The total amount reached 35.0μmol, which was significantly higher than that of RGO (20.4μmol).