Fabrication and characterization of (PVDF/PEO)/AgBiSe₂ polymeric membrane with enhanced visible light photocatalytic performance

Abstract

Driven by the visible band gap, silver bismuth selenide (AgBiSe2) was loaded in PVDF/PEO blend to enhance the photodegradation of Maxilon blue dye. AgBiSe2 nanoparticles were successfully synthesized by facile solvothermal approach and then loaded to PVDF/PEO (80/20) by 10, 20, and 30 wt%, by evaporative casting method. The X‐ray results in tandem with the Fourier transform infrared (FTIR) established the successful fabrication of (PVDF/PEO)/x(AgBiSe2) polymer nanocomposites. The X‐ray analysis verified the formation of hexagonal AgBiSe2 of a crystallite size ranging from 14.3 to 23.24 nm. The FT‐IR results manifested an overlap between functional groups that corroborated the interaction between PVDF and PEO. Peaks of the AgSe, and SeO modes confirmed that the nanofiller and PVDF/PEO blend were successfully incorporated. The micrograph images by field emission scanning electron microscope (FESEM) unraveled the high tendency of AgBiSe2 to form a uniform cluster. The optical band gap was found to be a direct band gap of 2.86 eV for 30 wt% AgBiSe2 proving its validity as visible‐light‐driven photocatalysts. The removal percentages of the prepared membrane are 4.1, 59, 82, and 98 for 0, 10%, 20%, and 30% AgBiSe2 after 300 min of irradiation under simulated sunlight at pH 6.

Radiation-Induced Degradation of PVA 26 by UV Radiation in the Presence of Zno Nanocatalyst

“…After irradiation, the absorbance maximum decreased to 1.75, 1.33, 0.99, and 0.93 from 15 minutes to 60 minutes in the UV chamber. The experimental result has shown that the maximum degradation occurred when the solution was placed for 60 minutes in the UV chamber in the presence of the catalyst and Hydrogen peroxide [37] (Figure 13).…”