Negative impact of oxygen molecular activation on Cr(VI) removal with core–shell Fe@Fe2O3 nanowires

Studies on the optimum conditions using acid-washed zero-valent iron/aluminum mixtures in permeable reactive barriers for the removal of different heavy metal ions from wastewater

“…The broad peak of Fe 2p 3/2 can be fitted into two peaks at the binding energies of 710.9 and 712.2 eV, which represented Fe 2 O 3 and FeOOH [59], respectively. In addition, the splitting of Fe 2p 1/2 line peak into two peaks indicated that Fe(II) and Fe(III) coexisted on the surface of ZVI/ZVAl mixture [58,59]. With regard to Al, Fig.…”

“…Fig. 9(a) showed the Fe 2p peaks at the binding energies of 710.1 (Fe 2p 3/2 ) and 724.1 eV (Fe 2p 1/2 ), with a shakeup satellite at 719.0 eV [57,58]. The satellite signal at 719.0 eV can be attributed to Fe in Fe 2 O 3 [58].…”

“…9(a) showed the Fe 2p peaks at the binding energies of 710.1 (Fe 2p 3/2 ) and 724.1 eV (Fe 2p 1/2 ), with a shakeup satellite at 719.0 eV [57,58]. The satellite signal at 719.0 eV can be attributed to Fe in Fe 2 O 3 [58]. The broad peak of Fe 2p 3/2 can be fitted into two peaks at the binding energies of 710.9 and 712.2 eV, which represented Fe 2 O 3 and FeOOH [59], respectively.…”

Fe Oxides Loaded on Carbon Cloth by Hydrothermal Process as an Effective and Reusable Heterogenous Fenton Catalyst

“…As shown in Figure 1A, the spectra peaks at 712.20 eV correspond to the binding energy of Fe 2P3/2 in FeOOH [24][25][26][27]. In Figure 1B, the O 1s peak of binding energy at 530.20 eV represents the lattice oxygen in iron (III) oxide, and the peak at 531.50 eV represents the hydroxyl group linked with Fe(III) [28]. According to the relative larger peak area at 712.2 eV than that of 710.98 eV, the Fe element on the surface of carbon cloth was mainly in the form of FeOOH.…”

Preparation Method of Nzvi-PVDF Hybrid Films With Cation-Exchange Function for Reductive Transformation of Cr(vi)

“…Chromium, a common heavy metal contaminant, universally exists in soils, groundwater, and surface waters in trivalent and hexavalent forms with the widespread use in industrial processes, such as electroplating, metallurgy, leather tanning, and textile dying industries (Bhattacharya et al 2014;Shen et al 2010;Mu et al 2015a;Zaleckas et al 2013). Cr(III) is relatively harmless and immobile with a trace concentrations because it is needed for glucose metabolism in human nutrition as well as for plants and animals, whereas Cr(VI) is more toxic and moves through aquatic environments (Cao, Zhang 2006;Chen et al 2015;Fang et al 2011a).…”