Herein, reduced graphene oxide-polyaniline/titanium dioxide composite (rGH-PANI/TiO₂) with three-dimensional (3D) network structure was successfully synthesized by a two-step method involving a hybridization process and a water bath approach. The rGH-PANI/TiO₂ hydrogels showed excellent performance in the degradation of various organic contaminants. The efficiencies of rGH-PANI/TiO₂ hydrogels for photo-electro-catalytic (PEC) removal of phenol was 100% much higher than that of photocatalysis (42%) and electrocatalysis (68%) alone. Meanwhile, the efficiencies of bisphenol A and 2,4-dichlorophenol were 100% after 4.5 and 3.5 h. More important, rGH-PANI/TiO₂ hydrogels have excellent mineralization ability for coking wastewater, and the removal rates of total organic carbon (TOC) and chemical oxygen demand (COD) reached 53.1% and 71.9%, respectively. Furthermore, the activities of rGH-PANI/TiO₂ for PEC degradation of phenol were also investigated under different conditions, such as phenol concentrations, sodium sulfate (Na₂SO₄) concentrations, and pH value. The results revealed that rGH-PANI/TiO₂ had outstanding PEC performance for the degradation of contaminants. This is because PANI is an excellent material for transporting holes. The large π bonds on graphene promote the rapid transfer of electrons. The addition of PANI and rGH promotes the separation of electron-hole pairs, and the degradation efficiencies of contaminants were improved. Therefore, the reported rGH-PANI/TiO₂ composites have excellent potential to purify industrially generated wastewater thanks to their outstanding PEC performance.

在此，通过涉及杂交过程和水浴方法的两步法成功地合成了具有三维（3D）网络结构的还原性氧化石墨烯-聚苯胺/二氧化钛复合材料（rGH-PANI / TiO ₂）。rGH-PANI / TiO ₂水凝胶在降解各种有机污染物方面表现出出色的性能。rGH-PANI / TiO ₂水凝胶的光催化去除苯酚的效率比单独的光催化（42％）和电催化（68％）高100％。同时，双酚A和2,4-二氯苯酚的效率在4.5和3.5小时后为100％。更重要的是，rGH-PANI / TiO ₂水凝胶对焦化废水具有优异的矿化能力，总有机碳（TOC）和化学需氧量（COD）的去除率分别达到53.1％和71.9％。此外，还研究了在不同条件下，如酚浓度，硫酸钠（Na ₂ SO ₄）浓度和pH值，rGH-PANI / TiO ₂对PEC降解的活性。结果表明，rGH-PANI / TiO ₂在污染物降解方面具有出色的PEC性能。这是因为PANI是传输空穴的极佳材料。石墨烯上的大π键促进电子的快速转移。PANI和rGH的加入促进了电子-空穴对的分离，并且提高了污染物的降解效率。因此，报告的rGH-PANI / TiO ₂复合材料具有出色的PEC性能，在净化工业产生的废水方面具有出色的潜力。