A magnetically retrievable ferrocene
appended supported ionic liquid
phase (SILP) photocatalyst containing a molybdate anion has been synthesized
and characterized by Fourier transform infrared, X-ray photoelectron
spectroscopy, transmission electron microscopy, X-ray diffraction,
energy dispersive spectroscopy, and vibrating sample magnetometer
analysis. The optical properties of the photocatalyst were probed
by photoluminescence and UV–vis diffuse reflectance spectroscopy.
The discharge of undesirable dye effluents from textile industrial
plants in the environment is the major concern of environmental pollution
and toxicity. In this context, we employed the as-prepared SILP photocatalyst
for degradation of methyl orange (MO) under UV light (365 nm) irradiation,
and subsequently, recycling studies were performed. The histological
alteration in gills of the fish is employed as a tool for monitoring
toxins in the environment. In view of this, the histo-toxicological
assessment on freshwater fish Tilapia mossambica gills asserted the damage of secondary gill lamellae due to MO.
Conversely, structural modifications in the gill architecture were
not observed by virtue of photodegraded products confirming that the
degraded product is nontoxic in nature. Additionally, the normal behavior
of fishes on exposure to photodegraded products reveals that research
findings are beneficial for the aquatic ecosystem.
Ferrocene tethered N-heterocyclic carbene-copper complex anchored on graphene ([GrFemImi]NHC@Cu complex) has been synthesized by covalent grafting of ferrocenyl ionic liquid in the matrix of graphene followed by metallation with copper (I) iodide. The [GrFemImi]NHC@Cu complex has been characterized by fourier transform infrared (FT-IR), fourier transform Raman (FT-Raman), CP-MAS 13 C NMR spectroscopy, transmission electron microscopy (TEM), thermogravimetric analysis (TGA), energy dispersive Xray (EDX) analysis, X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) surface area analysis and X-ray diffractometer (XRD) analysis. This novel complex served as a robust heterogeneous catalyst for the synthesis of bioactive N-aryl sulfonamides from variety of aryl boronic acids and sulfonyl azides in ethanol by Chan-Lam coupling. Recyclability experiments were executed successfully for six consecutive runs.
Zirconocene dichloride (Cp 2 ZrCl 2 ) was found to be highly efficient catalyst for the synthesis of structurally diverse 1-amidoalkyl-2-naphthols by one-pot multicomponent reaction (MCR) of 2-naphthol with a variety of aryl aldehydes and amides under ambient temperature. The activation of both carbonyl groups of aryl aldehydes and the o-quinine methide intermediate accounts for the high reactivity of Cp 2 ZrCl 2 . Graphical Abstract GRAPHICAL ABSTRACT OH C H O NH 2 O NH OH N H 2 NH 2 O
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