Chemical Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun-248005, India.
Nanoscale. 2015 Oct 7;7(37):15258-67. doi: 10.1039/c5nr03712c.
A novel in situ synthesized Ru(bpy)3/TiO2 hybrid nanocomposite is developed for the photoreduction of CO2 into methanol under visible light irradiation. The prepared composite was characterized by means of SEM, TEM, XRD, DT-TGA, XPS, UV-Vis and FT-IR techniques. The photocatalytic activity of the synthesized hybrid catalyst was tested for the photoreduction of CO2 under visible light using triethylamine as a sacrificial donor. The methanol yield for the Ru(bpy)3/TiO2 hybrid nanocomposite was found to be 1876 μmol g(-1) cat (ϕMeOH 0.024 mol Einstein(-1)) that was much higher in comparison with the in situ synthesized TiO2, 828 μmol g(-1) cat (ϕMeOH 0.010 mol Einstein(-1)) and the homogeneous Ru(bpy)3Cl2 complex, 385 μmol g(-1) cat (ϕMeOH 0.005 mol Einstein(-1)).
一种新型的 Ru(bpy)3/TiO2 原位合成杂化纳米复合材料被开发用于可见光照射下将 CO2 光还原为甲醇。通过 SEM、TEM、XRD、DT-TGA、XPS、UV-Vis 和 FT-IR 技术对制备的复合材料进行了表征。使用三乙胺作为牺牲供体，测试了合成的杂化催化剂在可见光下还原 CO2 的光催化活性。Ru(bpy)3/TiO2 杂化纳米复合材料的甲醇产率为 1876 μmol g(-1) cat (ϕMeOH 0.024 mol Einstein(-1))，与原位合成的 TiO2（828 μmol g(-1) cat (ϕMeOH 0.010 mol Einstein(-1))和均相 Ru(bpy)3Cl2 配合物（385 μmol g(-1) cat (ϕMeOH 0.005 mol Einstein(-1)))相比，产率要高得多。
