An Investigation of Arsenate and Arsenite Bonding Structures on Goethite by Ftir

Sun, Xiaofang; Doner, H. E.

doi:10.1097/00010694-199612000-00006

Cited by 317 publications

(211 citation statements)

References 24 publications

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“…FTIR and Raman studies are useful for determining the bonding configurations between As species and mineral surfaces. When As adsorbs as an inner-sphere complex, characteristic vibrational frequency shifts are observable [74][75][76][77][78][79]. XANES spectroscopy can provide information about the oxidation state of As that is adsorbed to mineral surfaces [80][81][82][83][84], and can determine if the oxidation state of As or the surface changes during the adsorption process [78,85].…”

Section: Studying As Adsorption With Experimentsmentioning

confidence: 99%

Arsenic Adsorption onto Minerals: Connecting Experimental Observations with Density Functional Theory Calculations

2014

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A review of the literature about calculating the adsorption properties of arsenic onto mineral models using density functional theory (DFT) is presented. Furthermore, this work presents DFT results that show the effect of model charge, hydration, oxidation state, and DFT method on the structures and adsorption energies for As (oxyhydr)oxide cluster models were calculated using planewave and cluster-model DFT methods.

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Section: Studying As Adsorption With Experimentsmentioning

confidence: 99%

Arsenic Adsorption onto Minerals: Connecting Experimental Observations with Density Functional Theory Calculations

2014

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“…It is formed by interaction of As(III)(OH) 3 with singly coordinated surface groups on the main crystal face of goethite (Sun and Doner, 1996). In addition, a monodentate complex may be present in a minor amount.…”

Section: Fe(ii)-as(iii) Interactionmentioning

confidence: 99%

Adsorption and surface oxidation of Fe(II) on metal (hydr)oxides

Hiemstra

Riemsdijk

2007

Geochimica et Cosmochimica Acta

146

109

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“…IR spectroscopy has been considered as a kind of direct means for investigating mechanisms of arsenic adsorption on amorphous oxides and geoethite (Sun and Doner, 1996;Goldberg and Johnston, 2001). The FTIR spectra of Ce-Fe adsorbent before and after As(V) binding adsorption at pH 5 are shown in Fig.…”

Section: Adsorption Mechanismsmentioning

confidence: 99%