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J Colloid Interface Sci

Title:		Catalytic oxidation of VOCs over 3D@2D Pd/CoMn(2)O(4) nanosheets supported on hollow Al(2)O(3) microspheres
Author(s):		He J; Zheng F; Zhou Y; Li X; Wang Y; Xiao J; Li Y; Chen D; Lu J;
Address:		"College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China. Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, PR China. College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China. Electronic address: dychen@suda.edu.cn. College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, PR China. Electronic address: lujm@suda.edu.cn"
Journal Title:		J Colloid Interface Sci
Year:		2022
Volume:		20220107
Issue:
Page Number:		155 - 167
DOI:		10.1016/j.jcis.2022.01.023
ISSN/ISBN:		1095-7103 (Electronic) 0021-9797 (Linking)
Abstract:		"Catalytic oxidation is a promising method for removing harmful volatile organic compounds (VOCs). Therefore, exploring high-efficiency catalysts for catalyzing VOCs is of great significance to the realization of an environment-friendly and sustainable society. Here, a series of 3D@2D constructed Al(2)O(3)@CoMn(2)O(4) microspheres with a hollow hierarchical structure supporting Pd nanoparticles was successfully synthesized. The introduction of hollow Al(2)O(3) for the in situ vertical growth of 2D CMO spinel materials constructs a well-defined core - shell hollow hierarchical structure, leading to larger specific surface area, more accessible active sites and promoted catalytic activity of support material. Additionally, theoretical calculations also indicate that the addition of Al(2)O(3) as the support material strengthens the adsorption of toluene and oxygen on CoMn(2)O(4), which promotes their activation. The dispersion of Pd further strengthens the low-temperature reducibility along with more active surface oxygen species and lower apparent activation energy. The optimum 1 wt% Pd/h-Al@4CMO catalyst possesses the lowest apparent activation energy for toluene of 77.4 kJ mol(-1), showing the relatively best catalytic activity for VOC oxidation, reaching 100% toluene, benzene, and ethyl acetate conversion at 165, 160, and 155 degrees C, respectively. Meanwhile, the 1 wt% Pd/h-Al@4CMO sample possesses excellent catalytic stability, outstanding selectivity, and good moisture tolerance, which is an effective candidate for eliminating VOCs contaminants"
Keywords:		3D@2D construction Hollow and hierarchical structure Spinel oxide VOCs oxidation;
Notes:		"PubMed-not-MEDLINEHe, Jiaqin Zheng, Fangfang Zhou, Yuanbo Li, Xunxun Wang, Yaru Xiao, Jun Li, Youyong Chen, Dongyun Lu, Jianmei eng 2022/01/17 J Colloid Interface Sci. 2022 May; 613:155-167. doi: 10.1016/j.jcis.2022.01.023. Epub 2022 Jan 7"