Adsorption of catechols, 2-aminophenols, and 1,2-phenylenediamines at the metal (hydr)oxide/water interface: effect of ring substituents on the adsorption onto TiO2
Article Abstract:
The identity of the ligand donor groups and other substituents on the aromatic ring determines the extent of adsorption and the value of the adsorption equilibrium constant for the simple organic ligands catechols, 2-aminophenols and 1,2-phenylenediamines. Systematic changes to the structure of the organic ligand and the composition of the aqueous medium were made to examine physical-chemical phenomena governing adsorption behavior. Such method is also applicable to the prediction of the adsorption behavior of other aromatic ligand compounds.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
User Contributions:
Comment about this article or add new information about this topic:
Catalysis of picolinate ester hydrolysis at the oxide/water interface: inhibition by coadsorbed species
Article Abstract:
A study into the presence of catalysis by oxide-bound metal atoms in natural aquatic environments indicates that the importance of surface-catalyzed hydrolysis reactions in relation to other degradation processes depends very much on location. Surface-catalyzed hydrolysis is determined by the levels and extent of adsorption of a number of constituent chemicals, with the catalytic levels of oxide surfaces being considerably reduced by low molecular weight organic acids and adsorption of phosphate and calcium.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
Adsorption of organic compounds possessing ligand donor groups at the oxide/water interface
Article Abstract:
The adsorption of organic compounds with ligand donor groups at the oxide/water interface was investigated using a diffuse-layer model. The results showed that the influence of pH and ionic strength on adsorption was due to stoichiometry, surface complex formation, mass balance equations for ligand and surface sites and Poisson-Boltzmann terms which relate the concentrations of charged species.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Accumulation and decay of chlorothalonil and selected metabolites in surface soil following foliar application to peanuts
- Abstracts: Iron redox cycling in surface waters: effects of humic substances and light. Adsorption and uptake of Cu by Emiliana husleyi in naturl seawater
- Abstracts: In-situ transformation of carbon tetrachloride and other halogenated compounds resulting from biostimulation under anoxic conditions
- Abstracts: Distribution of persistent organochlorines in the oceanic air and surface seawater and the role of ocean in their global transport and fate
- Abstracts: Dechlorination of polychlorinated biphenyls by Hudson River sediment organisms: specificity to the chlorination pattern of congeners