Synthesis and characterization of Acacia gum–Fe0Np–silica nanocomposite: an efficient Fenton-like catalyst for the degradation of Remazol Brilliant Violet dye

Gum Arabic-Stabilized Ferric Oxyhydroxide Nanoparticles for Efficient and Targeted Intestinal Delivery of Bioavailable Iron

“…As shown in Figure d, the strong peak at 1606 cm –1 (position A) and weak absorption band at 1415 cm –1 (position B) in the FT-IR spectra for GA could be assigned to the asymmetric and symmetric stretching of COO – . While, upon iron loading, the COO – asymmetric and symmetric stretching peaks of COO – shifted to 1623 and 1410 cm –1 , respectively, which implied the genesis of iron nucleation on the COO – positions of GA’s backbone.…”

“…23 As shown in Figure 1d, the strong peak at 1606 cm −1 (position A) and weak absorption band at 1415 cm −1 (position B) in the FT-IR spectra for GA could be assigned to the asymmetric and symmetric stretching of COO − . 24 While, upon iron loading, the COO − asymmetric and symmetric stretching peaks of COO − shifted to 1623 and 1410 cm −1 , respectively, which implied the genesis of iron nucleation on the COO − positions of GA's backbone. As shown in Figure 1e, the emission spectrum of GA exhibits a maximum peak at 330 nm, which could be attributed to tyrosine, 25 and on addition of iron, this emission intensity was dose-dependently quenched in accompany with the appearance of a shoulder peak at 350 nm.…”

Cu2O/Fe3O4/UiO-66 nanocomposite as an efficient fenton-like catalyst: Performance in organic pollutant degradation and influencing factors based machinelearning

“…The degradation performance after five recycles reduced by about 13% compared to the first use. The decrease in the catalytic activity of Cu 2 O/Fe 3 O 4 /UiO-66 can be attributed to the drop of the agent during washing and the hardening of the reaction sites due to the binding of the intermediates [ 60 ]. However, after five consecutive runs, the prepared material maintained a high catalytic activity (70%).…”

Superparamagnetic Zinc Ferrite Nanoparticles as Visible-Light Active Photocatalyst for Efficient Degradation of Selected Textile Dye in Water

“…However, it declines linearly even though pH 4 has the slowest rate of degradation and no discernible degradation of RBV-5R is seen after 60 min (Figure 5b). This might be as a result of the use of buffer solution, which contains different anions, as well as the positively charged surface of the catalyst, which might have prevented the dye from degrading by preventing the production of hydrogen peroxide, which would have produced a hydroxyl radical [43,44]. RBV-5R is an anionic dye, and as the pH rises above 4 up to the basic range, the protons produced in the reaction medium scavenge the production of hydroxyl ions, which speeds up the production of hydroxyl radical, and as a result the rapid degradation of the dye occurs in accordance with Equations ( 4) and ( 9)-( 11) [45].…”