Photocatalytic degradation of rhodamine B and real textile wastewater using Fe-doped TiO2 anchored on reduced graphene oxide (Fe-TiO2/rGO): Characterization and feasibility, mechanism and pathway studies

Photocatalytic decontamination of phenol and petrochemical wastewater through ZnO/TiO2 decorated on reduced graphene oxide nanocomposite: influential operating factors, mechanism, and electrical energy consumption

“…Thus, a higher moisture content could be adsorbed on the surface of catalysts. 1,3 Notably, in the GZnTi prole, a secondary decomposition step was initiated from 200 C to 800 C, associated with combustion or decomposition of rGO contained in the GZnTi catalyst. The results indicate that the real weight ratio of rGO in the GZnTi nanocomposite is almost the same as the theoretical weight ratio of rGO before synthesis, conrming the accuracy of the synthesis process.…”

“…Accordingly, wastewater containing a high concentration of aromatic and toxic contaminants should be effectively treated before being discharged into natural channels. [1][2][3][4][5][6] In particular, due to non-biodegradability of phenolic compounds in aqueous solutions, conventional biological methods are inefficient for effective treatment of these compounds. In recent years, advanced oxidation processes (AOPs) have changed into an alternative solution in the wastewater treatment plants for degradation of recalcitrant organic compounds thanks to their high degradation efficiency, low-cost, fast reaction rate, and non-selective degradation.…”

Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

“…The optimum additional amount of SiO 2 /CNOs/TiO 2 (3%) was 1.5 g/L as the value of the photodegradation efficiency for RhB reached 96.25% after 120 min under visible light irradiation. To further explore the kinetics of RhB photodegradation, the mineralization ratio by TOC was measured [31]. As shown in Figure 9b, after 120 min and 270 min of irradiation, the mineralization ratio of RhB reached 61.31% and 100%, respectively.…”

“…In addition, the total organic carbon (TOC) of the solution was tested using a Total Organic Carbon Analyzer (TOC) (TOC-V CPH, Shimadzu, Kyoto, Japan). The mineralization ratio was determined by the following equation [31]:…”

Novel Removal of Diazinon Pesticide by Adsorption and Photocatalytic Degradation of Visible Light-Driven Fe-TiO2/Bent-Fe Photocatalyst

“…e band gap structure of the TiO 2 is comprised of a valence band, which is mainly constructed from an O 2p orbital, and a conduction band, which is mainly constructed from an empty Ti 3d orbital. In the Fe-TiO 2 , the 3d orbitals of Fe dopant not only affected to the top of the valence band and the bottom of the conduction band of the TiO 2 but also inserted into the TiO 2 lattice structure to create a Fe impurity band under the conduction band and upper the valence band of the TiO 2 , formed an optical band gap [33,36]. erefore, the photoexcited electrons in the TiO 2 valence band could migrate to the Fe impurity band, and then move from the impurity band to the conduction band via next photon absorption.…”