This research focused on the photodegradation of aqueous isopropanol in the presence of RGO/TiO₂ photocatalysts, which were prepared by the hydrothermal method. Under the irradiation of the simulated sunlight AM1.5G, the photocatalytic activity of isopropanol degradation was studied. In addition, various initial isopropanol concentrations (20, 40, 60, 80, and 100 ppm) were employed in the photocatalytic reaction. P25RGO-0.01% was found to give the highest isopropanol removal of 92.24% at the initial isopropanol concentrations of 20 ppm. Such optimal loading of reduced graphene oxide can act as an electron trapping to suppress the possibility of the recombination of electron–hole pairs. Additionally, acetone was verified to be one of the main in1termediate products. Moreover, it was found that the acidic condition was advantageous to photodegrade isopropanol because of favorable conditions for forming hydroxyl radicals and superoxide radicals. The recyclability test was also verified by three sequent reactions and shown negligible decay of catalysts. This research demonstrated the feasibility of using photocatalysis to remove isopropanol wastewater in sunlight.

这项研究的重点是在RGO / TiO ₂存在下光降解异丙醇水溶液通过水热法制备的光催化剂。在模拟阳光AM1.5G的照射下，研究了异丙醇降解的光催化活性。此外，在光催化反应中采用了各种初始异丙醇浓度（20、40、60、80和100 ppm）。发现在初始异丙醇浓度为20 ppm时，P25RGO-0.01％的异丙醇去除率最高，为92.24％。还原性氧化石墨烯的这种最佳负载量可以充当电子陷阱，从而抑制电子-空穴对重组的可能性。此外，丙酮被证明是主要的中间体产品之一。此外，发现酸性条件由于形成羟基自由基和超氧化物自由基的有利条件而有利于光降解异丙醇。还通过三个后续反应验证了可回收性测试，结果表明催化剂的衰变可忽略不计。这项研究证明了使用光催化去除阳光中异丙醇废水的可行性。