Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland.
Poznan University of Technology, Faculty of Chemical Technology, Institute of Chemical Technology and Engineering, Berdychowo 4, PL-60965 Poznan, Poland.
J Environ Manage. 2018 Apr 15;212:395-404. doi: 10.1016/j.jenvman.2018.02.030. Epub 2018 Feb 22.
A novel type of photocatalyst - hybrids of amino-grafted titania and reduced graphene oxide - was synthesized by a hydrothermal method. The hybrids were comprehensively analyzed, including determination of their morphology (TEM), porous structure parameters (low-temperature N sorption) and crystalline structure (XRD). Additionally, to confirm the effective bonding of the amino-grafted titania and reduced graphene oxide, Raman and X-ray photoelectron spectroscopy (XPS) were used, in addition to elemental analysis. The key stage of the research was an evaluation of the photocatalytic activity of the synthesized hybrid photocatalysts with respect to the decomposition of C.I. Basic Blue 9 and C.I. Basic Red 1 dyes. It was found that the amino-grafted titania/reduced graphene oxide hybrids exhibited better photocatalytic activity in the degradation of C.I. Basic Blue 9 and C.I. Basic Red 1 than amino-grafted TiO alone. The high efficiency of dye decomposition can be attributed to the higher BET surface area and good separation of photogenerated electrons and holes offered by graphene oxide.
一种新型光催化剂——氨基接枝二氧化钛和还原氧化石墨烯的复合物，通过水热法合成。对复合物进行了全面分析，包括形貌（TEM）、多孔结构参数（低温氮气吸附）和晶体结构（XRD）的测定。此外，为了确认氨基接枝二氧化钛和还原氧化石墨烯的有效结合，还使用了拉曼和 X 射线光电子能谱（XPS）以及元素分析。研究的关键阶段是评估合成的混合光催化剂对 C.I.碱性蓝 9 和 C.I.碱性红 1 染料分解的光催化活性。结果发现，氨基接枝二氧化钛/还原氧化石墨烯复合物在 C.I.碱性蓝 9 和 C.I.碱性红 1 的降解中表现出比单独的氨基接枝 TiO2 更好的光催化活性。染料分解的高效率可归因于氧化石墨烯提供的更高的 BET 比表面积和光生电子和空穴的良好分离。
