Three-component synthesis of 5-aryl-3-amino-1H-pyrazole-4-carbonitriles and 3-amino-1,2-diazaspiro[4.5]dec-3-ene-4-carbonitriles

A facile and convenient process for the fabrication of a Z-scheme heterojunction g-C3N4 nanosheet/FeWO4 nanoparticle composite is reported. The structure of the synthesized g-C3N4/FeWO4 nanocomposite was analyzed by a variety of techniques including X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, diffuse reflectance spectroscopy (DRS), energy-dispersive X-ray spectroscopy (EDX), inductively coupled plasma optical emission spectroscopy (ICP-OES), photoluminescence spectroscopy (PL), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). The obtained results from DRS and PL analyses confirmed that the as-prepared nanocomposite g-C3N4/FeWO4 illustrated improved photocatalytic performance compared with pristine graphitic carbon nitride. The Z-scheme heterostructured nanocomposite (g-C3N4/FeWO4) with a suitable band structure shows efficient photocatalytic activity due to the spatial separation of charge carriers. The obtained g-C3N4/FeWO4 heterostructured photocatalyst demonstrated high efficiency in the tandem photo-oxidation/Knoevenagel condensation reaction under visible illumination and O2 atmosphere as a green oxidant. The catalytic activity of the g-C3N4/FeWO4 did not show considerable decline even after five cycles of use.

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A Review Article on Synthesis of Different Types of Bioactive Spiropyrazole Derivatives

Farghaly

Al‐Hussain

Zaki

et al. 2022

Polycyclic Aromatic Compounds

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Three-component synthesis of 5-aryl-3-amino-1H-pyrazole-4-carbonitriles and 3-amino-1,2-diazaspiro[4.5]dec-3-ene-4-carbonitriles

Cited by 7 publications

References 5 publications

Co2+ immobilized on highly ordered mesoporous graphitic carbon nitride (ompg-C3N4/Co2+) as an efficient and recyclable heterogeneous catalyst for one-pot tandem selective photo-oxidation/Knoevenagel condensation

Co2+ immobilized on highly ordered mesoporous graphitic carbon nitride (ompg-C3N4/Co2+) as an efficient and recyclable heterogeneous catalyst for one-pot tandem selective photo-oxidation/Knoevenagel condensation

Graphitic Carbon Nitride Nanosheet/FeWO₄ Nanoparticle Composite for Tandem Photooxidation/Knoevenagel Condensation

A Review Article on Synthesis of Different Types of Bioactive Spiropyrazole Derivatives

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Three-component synthesis of 5-aryl-3-amino-1H-pyrazole-4-carbonitriles and 3-amino-1,2-diazaspiro[4.5]dec-3-ene-4-carbonitriles

Cited by 7 publications

References 5 publications

Co2+ immobilized on highly ordered mesoporous graphitic carbon nitride (ompg-C3N4/Co2+) as an efficient and recyclable heterogeneous catalyst for one-pot tandem selective photo-oxidation/Knoevenagel condensation

Co2+ immobilized on highly ordered mesoporous graphitic carbon nitride (ompg-C3N4/Co2+) as an efficient and recyclable heterogeneous catalyst for one-pot tandem selective photo-oxidation/Knoevenagel condensation

Graphitic Carbon Nitride Nanosheet/FeWO4 Nanoparticle Composite for Tandem Photooxidation/Knoevenagel Condensation

A Review Article on Synthesis of Different Types of Bioactive Spiropyrazole Derivatives

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Product

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Graphitic Carbon Nitride Nanosheet/FeWO₄ Nanoparticle Composite for Tandem Photooxidation/Knoevenagel Condensation