2020
DOI: 10.1016/j.gca.2020.02.027
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Effects of Al substitution on local structure and morphology of lepidocrocite and its phosphate adsorption kinetics

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Cited by 35 publications
(23 citation statements)
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“…Peng et al, 45 reported the pH zero point charge of Al oxide (6.2) is higher than of the Fe oxide (5.3), implying the lower P adsorption capacity of Fe oxide due to the negatively charged surface when the soil pH > 6. Liao et al, 46 also indicated the ionic potential and zero point charge of Al 3+ is greater than Fe 3+ , which results in Fe-P being more susceptible to break with an increase of soil pH. In line with these results, the increase of soil Olsen-P, H 2 O-P and NaHCO 3 -P in the present study was mainly sourced from Fe-P.…”
Section: Discussionsupporting
confidence: 86%
“…Peng et al, 45 reported the pH zero point charge of Al oxide (6.2) is higher than of the Fe oxide (5.3), implying the lower P adsorption capacity of Fe oxide due to the negatively charged surface when the soil pH > 6. Liao et al, 46 also indicated the ionic potential and zero point charge of Al 3+ is greater than Fe 3+ , which results in Fe-P being more susceptible to break with an increase of soil pH. In line with these results, the increase of soil Olsen-P, H 2 O-P and NaHCO 3 -P in the present study was mainly sourced from Fe-P.…”
Section: Discussionsupporting
confidence: 86%
“…These two LEP surfaces would contribute to different adsorption behaviors of heavy metal ions due to their different availabilities and reactivities. 16,19 In addition, the water contact angle of P-LEP (24.8°) was higher than that of R-LEP (19.8°) (Fig. S3 †), suggesting that R-LEP had greater hydrophilicity and higher active site density (-OH) than P-LEP.…”
Section: Characterization and Properties Of Lepidocrocitementioning
confidence: 99%
“…17,18 Lepidocrocite usually forms different morphologies (size and shape), depending on the surrounding environmental conditions (including Si interference, Al substitution, ionic strength, etc.). [19][20][21] In addition, as a typical intermediate iron oxide transformation product, lepidocrocite also acquires different morphologies (rod-and plate-like) during the Fe(II)-induced phase transformation of metastable mineral such as jarosite, schwertmannite, or ferrihydrite. [22][23][24] These different lepidocrocite morphologies were mainly dominated by different exposed facet proportions of {010}/{001}, determining the adsorption behaviors of aqueous ions.…”
Section: Introductionmentioning
confidence: 99%
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“…Indeed, several studies reported the great capacity of poorly crystalline Fe oxyhydroxides (e.g., ferrihydrite and lepidocrocite) in promoting the immobilization of heavy metals in different soils (Martínez 1998;Manceau et al 2000;Tack et al 2006;Komárek et al 2013;Baleeiro et al 2018). Similarly, P retention in poorly crystallinity Fe oxyhydroxides is also widely reported and a well-recognized phenom (Slomp et al 1996;Arai and Sparks 2001;Wang et al 2013;Liao et al 2020) which plays an important role in the eutrophication process Queiroz et al 2021a).…”
Section: Potential Environmental Implicationsmentioning
confidence: 99%