| Title: | Removal of formaldehyde from air using functionalized silica supports |
| Author(s): | Ewlad-Ahmed AM; Morris MA; Patwardhan SV; Gibson LT; |
| Address: | "Department of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "This paper demonstrates the use of functionalized meso-silica materials (MCM-41 or SBA-15) as adsorbents for formaldehyde (H(2)CO) vapor from contaminated air. Additionally new green nanosilica (GNs) materials were prepared via a bioinspired synthesis route and were assessed for removal of H(2)CO from contaminated indoor air. These exciting new materials were prepared via rapid, 15 min, environmentally friendly synthesis routes avoiding any secondary pollution. They provided an excellent platform for functionalization and extraction of H(2)CO demonstrating similar performance to the conventional meso-silica materials. To the authors' knowledge this is the first reported practical application of this material type. Prior to trapping, all materials were functionalized with amino-propyl groups which led to chemisorption of H(2)CO; removing it permanently from air. No retention of H(2)CO was achieved with nonfunctionalized material and it was observed that best extraction performance required a dynamic adsorption setup when compared to passive application. These results demonstrate the first application of GNs as potential adsorbents and functionalized meso-silica for use in remediation of air pollution in indoor air" |
| Keywords: | "Adsorption Air/*analysis Air Pollutants/*isolation & purification Air Pollution/analysis Amines/chemistry Formaldehyde/*isolation & purification Nanoparticles/chemistry Nitrogen/chemistry Porosity Silicon Dioxide/*chemistry Spectroscopy, Fourier Transform;" |
| Notes: | "MedlineEwlad-Ahmed, Abdunaser M Morris, Michael A Patwardhan, Siddharth V Gibson, Lorraine T eng Research Support, Non-U.S. Gov't 2012/11/28 Environ Sci Technol. 2012 Dec 18; 46(24):13354-60. doi: 10.1021/es303886q. Epub 2012 Dec 6" |
