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Nanomaterials (Basel)

Title:		Weak Metal-Support Interaction over CuO/TiO(2) Catalyst Governed Low-Temperature Toluene Oxidation
Author(s):		Zou M; Wang M; Wang J; Zhu D; Liu J; Wang J; Xiao Q; Chen J;
Address:		"Faculty of Environment Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China. Kunming Youdu Environmental Monitoring Co., Ltd., Kunming 650100, China"
Journal Title:		Nanomaterials (Basel)
Year:		2023
Volume:		20230614
Issue:		12
Page Number:		-
DOI:		10.3390/nano13121859
ISSN/ISBN:		2079-4991 (Print) 2079-4991 (Electronic) 2079-4991 (Linking)
Abstract:		"Regulating the metal-support interaction is essential for obtaining highly efficient catalysts for the catalytic oxidation of volatile organic compounds (VOCs). In this work, CuO-TiO(2)(coll) and CuO/TiO(2)(imp) with different metal-support interactions were prepared via colloidal and impregnation methods, respectively. The results demonstrated that CuO/TiO(2)(imp) has higher low-temperature catalytic activity, with a 50% removal of toluene at 170 degrees C compared to CuO-TiO(2)(coll). Additionally, the normalized reaction rate (6.4 x 10(-6) mol.g(-1).s(-1)) at 160 degrees C over CuO/TiO(2)(imp) was almost four-fold higher than that over CuO-TiO(2)(coll) (1.5 x 10(-6) mol.g(-1).s(-1)), and the apparent activation energy value (27.9 +/- 2.9 kJ.mol(-1)) was lower. Systematic structure and surface analysis results disclosed that abundant Cu(2+) active species and numerous small CuO particles were presented over CuO/TiO(2)(imp). Owing to the weak interaction of CuO and TiO(2) in this optimized catalyst, the concentration of reducible oxygen species associated with the superior redox property could be enhanced, thus significantly contributing to its low-temperature catalytic activity for toluene oxidation. This work is helpful in exploring the influence of metal-support interaction on the catalytic oxidation of VOCs and developing low-temperature catalysts for VOCs catalytic oxidation"
Keywords:		CuO/TiO2 toluene catalytic oxidation weak metal-support interaction;
Notes:		"PubMed-not-MEDLINEZou, Meilin Wang, Mingyue Wang, Jingge Zhu, Danrui Liu, Jiaying Wang, Junwei Xiao, Qingchao Chen, Jianjun eng 22206066/National Natural Science Foundation of China/ Switzerland 2023/06/27 Nanomaterials (Basel). 2023 Jun 14; 13(12):1859. doi: 10.3390/nano13121859"