Activated Carbon Loaded N, S Co-Doped TiO₂ Nanomaterial and its Dye Wastewater Treatment

Abstract

Activated carbon (AC) loaded nitrogen and sulfur (N, S) co-doped TiO 2 nanomaterial (AC-N-STiO 2 ) was prepared by precipitation method. AC-N-S-TiO 2 material was characterized by Scanning Electron Microscopy (SEM) with Energy Dispersive X-ray analysis (EDX), X-ray diffraction (XRD), Fourier Transform -Infrared (FT-IR), Photoluminescence (PL) and atomic force microscopy (AFM) analysis. Photodegradation and decolorization of Malachite green (MAG) and Methyl green (MEG) by using TiO 2, N-S-TiO 2 and AC-N-S-TiO 2 under UV-light irradiation has been carried out. The photocatalytic activity of the AC-N-S-TiO 2 was higher than that of the undoped and N, S-doped TiO 2 , The hydroxyl radical analysis -Fluorescence technique with coumarin has been discussed. The photodegradation of MEG was well described by analyzed to be pseudo-first order according to the Langmuir-Hinshelwood representation, the high quantum yield set up to be calculated, stability and reustability of nanomaterial. AC-N-S-TiO 2 act as a promising photocatalyst for dye wastewater treatment under UV-light irradiation.

Combined Adsorption and Photocatalytic Degradation for Ciprofloxacin Removal Using Sugarcane Bagasse/N,S-TiO2 Powder Composite

“…[32]. The peak at 3300-3500 cm −1 corresponds to the O-H stretching and bending vibrations of the hydroxyl groups and the adsorbed water molecules [33]. The presence of the elements N, S, Ti is confirmed in the three material composites through the FTIR results.…”

“…The low FT-IR frequencies of RSB/N,S-TiO2 and CSB/N,S-TiO2 in this range may be because of the low titanium and oxygen element concentration. Ti-O-N and Ti-O-S bonds appear at the bands between 1047-1055 cm −1 and 1130-1441 cm −1 , respectively [33,34], which clearly show in the co-doped composites of N,S-TiO2 and ASB/N,S-TiO2. The bands in the regions 1500-1600 cm −1 and 2800-2900 cm −1 are attributed to the stretching of the C-O-O groups, the symmetric vibration of C-H, and asymmetric vibration of C-H [20].…”

“…Spectra were used to identify the surface functional groups of composite synthesized samples. Broad peaks within the 400-800 cm −1 range are related to Ti-O, Ti-O-Ti, O-Ti-O, and Ti-O-C bonds [32,33]. The low FT-IR frequencies of RSB/N,S-TiO2 and CSB/N,S-TiO2 in this range may be because of the low titanium and oxygen element concentration.…”

Synthesis and characterization of AC-CdO-TiO2 nanocomposite recyclable and multi-application study

“…Activated carbon is a brilliant adsorbent of waste water pollutants, due to the following reasons (i) activated carbon adsorb the dye and release it on surface of the photocatalyst (ii) degradation by oxidation [23][24][25]. Activated carbon-loaded semiconductor oxide undergoes high photodegradation [26][27][28].…”