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ACS Omega

Title:		Adsorption and Oxidative Desorption of Acetaldehyde over Mesoporous Fe (x) O (y) H (z) /Al(2)O(3)
Author(s):		Jeong JH; Kim SY; Kim J; Cha BJ; Han SW; Park CH; Woo TG; Kim CS; Kim YD;
Address:		"Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea. Department of Physics, Kookmin University, Seoul 02707, Republic of Korea"
Journal Title:		ACS Omega
Year:		2019
Volume:		20190315
Issue:		3
Page Number:		5382 - 5391
DOI:		10.1021/acsomega.9b00014
ISSN/ISBN:		2470-1343 (Electronic) 2470-1343 (Linking)
Abstract:		"Fe (x) O (y) H (z) nanostructures were incorporated into commercially available and highly porous alumina using the temperature-regulated chemical vapor deposition method with ferrocene as an Fe precursor and subsequent annealing. All processes were conducted under ambient pressure conditions without using any high-vacuum equipment. The entire internal micro- and mesopores of the Al(2)O(3) substrate with a bead diameter of approximately 2 mm were evenly decorated with Fe (x) O (y) H (z) nanoparticles. The Fe (x) O (y) H (z) /Al(2)O(3) structures showed substantially high activity for acetaldehyde oxidation. Most importantly, Fe (x) O (y) H (z) /Al(2)O(3) with a high surface area ( approximately 200 m(2)/g) and abundant mesopores was found to uptake a large amount of acetaldehyde at room temperature, and subsequent thermal regeneration of Fe (x) O (y) H (z) /Al(2)O(3) in air resulted in the emission of CO(2) with only a negligibly small amount of acetaldehyde because Fe (x) O (y) H (z) nanoparticles can catalyze total oxidation of adsorbed acetaldehyde during the thermal treatment. Increase in the humidity of the atmosphere decreased the amount of acetaldehyde adsorbed on the surface due to the competitive adsorption of acetaldehyde and water molecules, although the adsorptive removal of acetaldehyde and total oxidative regeneration were verified under a broad range of humidity conditions (0-70%). Combinatory use of room-temperature adsorption and catalytic oxidation of adsorbed volatile organic compounds using Fe (x) O (y) H (z) /Al(2)O(3) can be of potential application in indoor and outdoor pollution treatments"
Keywords:
Notes:		"PubMed-not-MEDLINEJeong, Jae Hwan Kim, Soong Yeon Kim, Jeonghun Cha, Byeong Jun Han, Sang Wook Park, Chan Heum Woo, Tae Gyun Kim, Chul Sung Kim, Young Dok eng 2019/08/29 ACS Omega. 2019 Mar 15; 4(3):5382-5391. doi: 10.1021/acsomega.9b00014. eCollection 2019 Mar 31"