For environmental remediation, a novel SrTiO3/Ag2O heterostructure embedded in N-doped carbon (NDC)
nanocomposite has been fabricated by the polymeric precursor method. The prepared SrTiO3/Ag2O-NDC
nanocomposite has been used as a photocatalyst in dichlorodiphenyltrichloroethane (DDT) degradation reactions. The results showed that the tuned bandgap increased the photocatalyst’s catalytic efficiency, and about
94.2% of the DDT degraded within 180 min. The role of the photo-generated spices was also determined using
radical scavenging experiments and ESR spectra. The results showed that h+ and OH•− play prominent roles in
DDT degradation under visible light. The intermediate and the degradation mechanism were determined using
GC–MS and DFT calculations. The reusability and excellent catalytic efficiency of the SrTiO3/Ag2O-NDC photocatalyst show its strengths in breaking down of organic pollutants.