172494-87-0Relevant academic research and scientific papers
Tuning the redox potential of Ag?Ag2O/WO3 and Ag?Ag2S/WO3 photocatalysts toward diclofenac oxidation and nitrophenol reduction
Ismail, Eman H.,Khalil, Mostafa M. H.,Mohamed, Mohamed Mokhtar,Torad, Eman
, (2021)
WO3 nanoplates modified with either Ag2O or Ag2S nano-architectures were synthesized by a deposition-hydrothermal route (180 °C for 5 h). They were characterized using X-ray powder diffraction, N2 sorptiometry, Transmission electron microscopy, UV–vis diffuse reflectance spectroscopy, Photoluminescence spectroscopy, and X-ray photoelectron spectroscopy. The photo-catalytic (λ > 420 nm, 160 W) degradation of Diclofenac (DCF; 60 mg/l), was achieved using H2O2 (1 × 10?4 M) with either Ag?Ag2O/WO3 (K = 32.0 × 10-3 min-1) or Ag?Ag2S/WO3 (K = 7.3 × 10-3 min-1) catalysts. In the case of DCF degradation using radical scavengers, [rad]O2? played a key role in the degradation process whilst [rad]OH and holes acted moderately minor roles. The possible DCF degradation paths and intermediates were assessed by LC–MS. Both Ag?Ag2O/WO3 and Ag?Ag2S/WO3 catalysts were used in the photo-reduction of 4-nitrophenol (4-NP; 1.8 × 10?4 M) to 4-aminophenol (4-AP) with rate constants equal 8.3 x 10?3 min-1 and 1.6 x 10?3 min?1, respectively.
Method for the preparation of substituted derivatives of diphenyl amine
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, (2008/06/13)
This invention provides a novel process for the preparation of substituted derivatives of diphenyl amine. The special feature of this novel process is that low cost and recoverable phenolic salts are used as catalysts for molecular rearrangement and aminolysis to obtain substituted derivatives of diphenyl amine in high yield.
