Removal of Formaldehyde from Air Using Functionalized Silica Supports

被引:78
作者
Ewlad-Ahmed, Abdunaser M. [2 ]
Morris, Michael A. [3 ]
Patwardhan, Siddharth V. [1 ]
Gibson, Lorraine T. [2 ]
机构
[1] Univ Strathclyde, Dept Chem & Proc Engn, Glasgow G1 1XJ, Lanark, Scotland
[2] Univ Strathclyde, Dept Pure & Appl Chem, WestCHEM, Glasgow G1 1XL, Lanark, Scotland
[3] Natl Univ Ireland Univ Coll Cork, Dept Chem, Cork, Ireland
关键词
VOLATILE ORGANIC-COMPOUNDS; MESOPOROUS SILICA; INDOOR AIR; ADSORPTION; ENRICHMENT; CATALYSTS; MCM-48; TVOC; GAS;
D O I
10.1021/es303886q
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
This paper demonstrates the use of functionalized meso-silica materials (MCM-41 or SBA-15) as adsorbents for formaldehyde (H2CO) vapor from contaminated air. Additionally new green nanosilica (GNs) materials were prepared via a bioinspired synthesis route and were assessed for removal of H2CO 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 H2CO 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 H2CO; removing it permanently from air. No retention of H2CO 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.
引用
收藏
页码:13354 / 13360
页数:7
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