The MoS2/S-Doped Graphitic Carbon Nitride: Synthesis and Application as a Composite for Removing Organic Pollutant

The MoS2/S-doped graphitic carbon nitride (MoS2/S-g-C3N4) was synthesized by a simple method and applied for methylene blue (MB) removal as an organic pollutant. The structure of MoS2/S-doped graphitic carbon nitride was characterized using FTIR, XRD, SEM, TGA, and BET techniques. The accomplishment of MoS2/S-doped graphitic carbon nitride as an adsorbent was investigated for the removal of MB from an aqueous solution. The various parameters were studied such as pH, initial MB concentration, adsorbent dose, temperature, and time. The best findings were obtained at pH=8, 8 ppm MB concentration, 0.05 g MoS2/S-g-C3N4, 30 min, and 22 ˚C. The Langmuir isotherm model was adopted with the obtained data. The kinetic studies have indicated that the adsorption of methylene blue could be well described by the second-order equation. Maximum adsorption was calculated as 166 mg/g. The degradation of MB was studied by MoS2/S-doped graphitic carbon nitride under Light Emission Diode (LED). Results showed that the MoS2/S-doped graphitic carbon nitride could enhance the photocatalytic activity compared to pure g-C3N4 and MoS2/g-C3N4. The findings confirmed that the MoS2/S-doped graphitic carbon nitride could be applied as an efficient, low-cost adsorbent, and photocatalyst in order to remove cationic dyes such as methylene blue.