Addition and correction
Organo-lined alumina surface from covalent attachment of alkylphosphonate chains in aqueous solution
Stéphanie Lassiaz, Anne Galarneau, Philippe Trens, Dominique Labarre, Hubert Mutin and Daniel Brunel
New J. Chem., 2010, 34, 1424 (DOI: 10.1039/b9nj00762h). Amendment published 19th October 2010.
The captions to Figures 1–9 were omitted in error. These captions should read:
Figure 1. XRD of the sample P62 prepared without pH adjustment of the octylphosphonic acid solution. Insert: Schematic view of the formation of a lamellar aluminium phosphonate phase by using phosphonic acid in aqueous media without pH adjustment.
Figure 2. 31P CP-MAS NMR spectrum of the samples P47 and P62 prepared with or without pH adjustment of the octylphosphonic acid solution.
Figure 3. TEM pictures of the aluminic phases. Pristine δ-alumina (A, sample P0), after surface modification by octylphosphonic acid without pH adjustment (B, sample P62) or with pH adjustment (C, sample P47).
Figure 4. Loading profile of octylphosphonate on alumina surface versus the initial amount of octylphosphonic acid in the contacting solution.
Figure 5. Evolution of the pattern of the 31P MAS NMR spectrum of Al2O3-modified by octylphosphonate versus final grafting octyl chain density for samples P10, P33 and P47.
Figure 6. Evolution of the octylphosphonate loading on alumina obtained with a contacting solution containing 4.6 P/nm2 at an initial pH of 6.5 and at room temperature; (a) short contacting times, (b) long contacting times.
Figure 7. 31P MAS NMR spectra of the samples withdrawn versus time during the treatment of alumina with a contacting solution of octylphosphonic acid containing 4.6 P/nm2 at an initial pH of 6.5 and at room temperature.
Figure 8. n-Hexane adsorption isotherms at 25°C over alumina and octylphosphonate grafted alumina materials at different densities from 1 to 4.7 P/nm2 .
Figure 9. Water adsorption isotherms at 25°C over alumina and octylphosphonate grafted alumina materials at different densities from 1 to 4.7 P/nm2 .
The Royal Society of Chemistry apologises for these errors and any subsequent inconvenience to authors and readers.