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You searched for: Author "Swedlund, Peter J." Remove constraint Author: "Swedlund, Peter J."
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1. Arsenate–Ferrihydrite Systems from Minutes to Months: A Macroscopic and IR Spectroscopic Study of an Elusive Equilibrium

Author:
Swedlund Peter J.,   et al.   ; Holtkamp Hannah; Song Yantao; Daughney Christopher J.;     Show all 4 Authors
Source:
Environmental Science & Technology 2014 v.48 no.5 pp. 2759-2765
ISSN:
1520-5851
Subject:
arsenic; equations; ferrihydrite; models; pH; sorption; spectral analysis
Abstract:
... Sorption by ferrihydrite is an important control on As(V) concentrations in many oxic aquatic systems. There are significant discrepancies in reported sorption constants (log(KAₛ)), which presents a problem for quantifying and understanding this important system. A review of reported ferrihydrite–As(V) sorption studies indicated a positive correlation between reaction time used in the experiments ...
DOI:
10.1021/es404742c

2. The Influence of Surface Structure on H4SiO4 Oligomerization on Rutile and Amorphous TiO2 Surfaces: An ATR-IR and Synchrotron XPS Study

Author:
Swedlund Peter J.,   et al.   ; Song Yantao; McIntosh Grant J.; Cowie Bruce C. C.; Waterhouse Geoffrey I. N.; Metson James B.;     Show all 6 Authors
Source:
Langmuir 2012 v.28 no.49 pp. 16890-16899
ISSN:
1520-5827
Subject:
X-ray photoelectron spectroscopy; energy; geometry; models; oligomerization; oxygen; polymerization; polymers; silicates; silicic acid; silicon; sorption; titanium dioxide
Abstract:
... Silicic acid (H₄SiO₄) is ubiquitous in natural aquatic systems. Applications of TiO₂ in these systems will be influenced by H₄SiO₄ sorption and oligomerization reactions on the TiO₂ surface, and this can affect many aspects of TiO₂ reactivity. The spatial arrangement of sorption sites on a metal oxide surface can promote specific lateral interactions, such as oligomerization, between sorbed specie ...
DOI:
10.1021/la3032623