Three-dimensional porous La(OH)3/g-C3N4 adsorption-photocatalytic synergistic removal of tetracycline

Synthesis and Characterization of Composite WO3 Fibers/g-C3N4 Photocatalysts for the Removal of the Insecticide Clothianidin in Aquatic Media

“…In both spectra, the sharp band located at ~807 cm −1 is attributed to the out-of-plane bending vibrations (also known as breathing mode) of the tris-s-triazine (or s-triazine) units [41,75]. Also, the less intense band centered at ~888 cm −1 is assigned to the N-H deformation mode of the cross-linked tris-s-triazine, while the bands located in the broad region from 1000 cm −1 to 1650 cm −1 are associated with the characteristic skeletal stretching vibrations of the C-N heterocycles [73,84]. The distinct bands centered around 1316 cm −1 and 1231 cm −1 can be attributed to the out-of-plane bending vibrations of tri-striazine units connected via trigonal N-(C) 3 or C-NH-C bridging units, which are indicative of complete and incomplete polycondensation of the melem monomers, respectively [41,85].…”

“…The distinct bands centered around 1316 cm −1 and 1231 cm −1 can be attributed to the out-of-plane bending vibrations of tri-striazine units connected via trigonal N-(C) 3 or C-NH-C bridging units, which are indicative of complete and incomplete polycondensation of the melem monomers, respectively [41,85]. Moreover, the existence of a broad band ranging from 3000 cm −1 to 3500 cm −1 , which is characteristic of N-H stretching vibrations, is indicative of the presence of residual or terminating amino groups in the structure of g-C 3 N 4 [75,84].…”