Investigation of phosphate adsorption onto ferrihydrite by X-ray Photoelectron Spectroscopy

Mallet, Martine; Barthélémy, K.; Ruby, Christian; Renard, Aurélien; Naille, Sébastien

doi:10.1016/j.jcis.2013.06.049

Cited by 209 publications

(78 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous studies have shown that solution pH can significantly affect the adsorption of ions on (oxyhydr)oxides (Mustafa et al, 2004;Mallet et al, 2013). A strong pH dependence of phosphate and Zn(II) adsorption on Fh was observed as well in this work (Fig.…”

Section: Effects Of Ph On the Adsorption Of Phosphate And Zn(ii)supporting

confidence: 81%

“…The P 2p peaks of samples in the 'P' and 'P + Zn' adsorption systems shifted slightly to lower binding energy, implying similar chemical environments for phosphorus. The possible reason for the slight shift could be the additional formation of outer-sphere complexes of phosphate in the simultaneous adsorption system, as the P 2p 3/2 binding energy of NaH 2 PO 4 was about 132.9 eV, being lower than that of the phosphate bound to Fe or Zn (Mallet et al, 2013). The spectra of the short and wide peaks at ∼140 eV were identified as the Zn 3s peaks rather than peaks of phosphorus.…”

Section: Bonding Mode Of Phosphate and Zn(ii) On Fhmentioning

confidence: 99%

“…Due to its extremely large surface area and chemically active surface groups, Fh shows strong capacity in the adsorption of heavy-metal cations and oxyanions and therefore has a close relationship with the geochemical cycling of these contaminants (Jambor and Dutrizac, 1998;Moon and Peacock, 2013). Furthermore, its abundance in the environment as well as easy availability and small toxicity also make it an excellent candidate in contaminant removal strategies (Hiemstra et al, 2009 interactions of Fh with heavy-metal cations and oxyanions have drawn significant concerns (Trivedi et al, 2004;Mallet et al, 2013), and the adsorption mechanisms of heavy-metal cations/oxyanions on Fh have been well studied, including ligand exchange (Mustafa et al, 2004;Das et al, 2013), electrostatic interactions , surface precipitation (Michael et al, 2013), etc.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Co-adsorption of phosphate and zinc(II) on the surface of ferrihydrite

et al. 2016

View full text Add to dashboard Cite

h i g h l i g h t s• Phosphate and Zn(II) exhibited a synergistic adsorption on Ferrihydrite.• The effects of pH on the adsorption of the two contaminants were investigated.• XPS and ATR-FTIR demonstrated ternary complexes were formed on Ferrihydrite.• A phosphate-bridged ternary complexes model was proposed. a r t i c l e i n f o b s t r a c tFerrihydrite (Fh) is of great importance in affecting the migration and transformation of heavy-metal cations and oxyanions. To advance the understanding of co-adsorption reactions on Fh surface, the coadsorption of phosphate and Zn(II) from aqueous solution to a synthesized Fh was determined. The batch experiments demonstrated a synergistic adsorption of phosphate and Zn(II) on Fh. In the pH range of 3.5-6, the adsorption of the two contaminants showed strong pH dependence in the single solute adsorption systems, but the dependence alleviated in the simultaneous adsorption system. X-ray photoelectron spectroscopy (XPS) revealed that the chemical shifts of Zn 2p 1/2 and Zn 2p 3/2 binding energies were more significant than that of P 2p in the single and simultaneous adsorption systems. On the other side, in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) observed increased formation of outer-and inner-sphere complexes of phosphate in the simultaneous system. Thus, the synergistic adsorption of the two contaminants could be attributed to the formation of ternary complexes as well as electrostatic interactions, while surface precipitation could not be completely ruled out. On the basis of the results from both the batch adsorption experiments and structural characterization, these two contaminants were likely to form phosphate-bridged ternary complexes (≡Fe-P-Zn) in the simultaneous adsorption system.

show abstract

Section: Effects Of Ph On the Adsorption Of Phosphate And Zn(ii)supporting

confidence: 81%

Section: Bonding Mode Of Phosphate and Zn(ii) On Fhmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Co-adsorption of phosphate and zinc(II) on the surface of ferrihydrite

et al. 2016

View full text Add to dashboard Cite

show abstract

“…This is similar to our previous ndings on the O 1s spectra for the SO 4 2À containing Fe III /Fe III LDH, 22 and phosphate adsorption to ferrihydrite. 35 The appearance of P 2p spectra at a binding energy of $133.4 eV aer phosphate adsorption indicates the successful phosphate loading on the Fe III nanosheets (Fig. 8c).…”

Section: Xps Surface Analysismentioning

confidence: 92%

“…Peak tting of the O 1s spectra results in three different components at $529.8 eV, $531.0 eV and $532.8 eV corresponding to O-Fe bonding, OH/O-P bonding, and adsorbed water, respectively, 35 the O 1s spectra clearly show a signicant increase of the binding energy at $531.0 eV compared to that at 529.8 eV as a result of phosphate bonding. Even though it is difficult to discern differences between the binding energies of O-H and O-P in Fe III nanosheets, 35 the enhanced relative intensity at $531 eV compared to that at 529.8 eV can be due to binding of phosphate to O-Fe, subsequently leading to the formation of Fe-O-P bonding. This is similar to our previous ndings on the O 1s spectra for the SO 4 2À containing Fe III /Fe III LDH, 22 and phosphate adsorption to ferrihydrite.…”

Section: Xps Surface Analysismentioning

confidence: 93%

Facile upscaled synthesis of layered iron oxide nanosheets and their application in phosphate removal

et al. 2015

View full text Add to dashboard Cite

show abstract

Detailed magnetic monitoring of the enhanced magnetism of ferrihydrite along its progressive transformation into hematite

et al. 2016

View full text Add to dashboard Cite

Under certain aging conditions, ferrihydrite evolves into hematite through intermediate products of enhanced magnetism. Although the magnetic properties of the end product, hematite, are to date satisfactorily known, those of ferrihydrite (and especially the products of its progressive aging) are not sufficiently explored. To this end, magnetic experiments, conducted mostly by using alternating magnetic fields, have been performed. The results reveal that two‐line ferrihydrite exhibits conspicuous low‐temperature spin glass behavior, a new finding that, on the other hand, could be expected given the previous microstructural observations that described this mineral as a very disordered gel. Upon aging, a progressive increase of the effective magnetic moment per iron ion is detected, in agreement with previous observations that ascribed ferrimagnetic character to an intermediate crystalline phase (sometime called ferriferrihydrite) that disappears just before the full transformation into hematite. Transmission electron microscopy observations suggest that this intermediate crystalline phase nucleates at the expense of the primordial gel, remaining physically attached to it until complete transformation into hematite. This microstructural picture appears well supported as, upon aging, the glassy magnetic dynamics found in ferrihydrite persists for the aged products even when dispersed in a nonmagnetic matrix, very likely because part of the so grown ferrimagnetic nanoparticles form aggregates within remains of the nontransformed gel. We propose a coherent model of ferrihydrite aging, based on integrated microstructural and magnetic observations, which is useful for the identification of aging products in geological and biological environments.

show abstract

Investigation of phosphate adsorption onto ferrihydrite by X-ray Photoelectron Spectroscopy

Cited by 209 publications

References 31 publications

Co-adsorption of phosphate and zinc(II) on the surface of ferrihydrite

Co-adsorption of phosphate and zinc(II) on the surface of ferrihydrite

Facile upscaled synthesis of layered iron oxide nanosheets and their application in phosphate removal

Detailed magnetic monitoring of the enhanced magnetism of ferrihydrite along its progressive transformation into hematite

Contact Info

Product

Resources

About