Heterogeneous Fenton-like activity of novel metallosalophen magnetic nanocomposites: significant anchoring group effect

Abstract

Novel magnetically recoverable Fe(iii)- and Mn(iii)salophen complexes were designed for the effective degradation of hazardous organic dyes using a heterogeneous advanced oxidation process.

{Mo72Fe30} Nanoclusters for the Visible-Light-Driven Photocatalytic Degradation of Organic Dyes

“…No evidence for N-de-ethylated intermediates from RhB degradation was observed (molecular masses of 415, 387, 359, 331 for mono, di, tri, and fully N-de-ethylated RhB products, respectively). 53 This was further supported by the UV−vis spectral change depicted in Figure 3. The characteristic absorbance peak of RhB at 556 nm gradually decreased without any peak shift, ruling out any N-de-ethylation of RhB (λ = 498 nm).…”

“…The chromophore structure of activated RhB +· is efficiently destroyed, as evidenced by different smaller organic molecules in filtrate detected by GC–MS analysis (Figure S22). The lack of any peak with a molecular mass of 433 quite confirmed the destruction of RhB . The GC data revealed one predominant product with a retention time of 12.27 ( m / z = 177) and many other products with smaller intensities including phthalic acid and N , N -diethylaniline (Figure S22).…”

“…The lack of any peak with a molecular mass of 433 quite confirmed the destruction of RhB. 53 The GC data revealed one predominant product with a retention time of 12.27 (m/z = 177) and many other products with smaller intensities including phthalic acid and N,N-diethylaniline (Figure S22). No evidence for N-de-ethylated intermediates from RhB degradation was observed (molecular masses of 415, 387, 359, 331 for mono, di, tri, and fully N-de-ethylated RhB products, respectively).…”

Silica iminopyridine‐functionalized nanomaghemite enhances the oxygenation activity and durability of simple Co(II) salophen complex

“…[11] Following our previous works on development of new magnetically recoverable catalysts for oxidation of organic compounds, [12][13][14] just recently, we developed a new pyridine functionalized maghemite nanoparticles to carry Fe(III) and Mn(III) salophen complexes as heterogeneous Fenton-like catalysts. [15] Herein, we wish to use pyridine-functionalized γ-Fe 2 O 3 nanoparticles as a competent support for coordinative anchoring of simple cobalt(II) salophen complex as a heterogeneous catalyst for selective oxidation of benzyl alcohols. The pyridine attached to MNP could improve the catalytic efficiency and stability of salophen complex.…”

“…Magnetic nanoparticle‐supported catalysts also show high dispersion and reactivity with a high degree of chemical stability making them appropriate heterogeneous catalysts . Following our previous works on development of new magnetically recoverable catalysts for oxidation of organic compounds, just recently, we developed a new pyridine functionalized maghemite nanoparticles to carry Fe(III) and Mn(III) salophen complexes as heterogeneous Fenton‐like catalysts . Herein, we wish to use pyridine‐functionalized γ‐Fe 2 O 3 nanoparticles as a competent support for coordinative anchoring of simple cobalt(II) salophen complex as a heterogeneous catalyst for selective oxidation of benzyl alcohols.…”