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Environ Sci Pollut Res Int

Title:		Preparation of graphene-based catalysts and combined DBD reactor for VOC degradation
Author(s):		Liu Z; Wang Y; Zhang G; Yang J; Liu S;
Address:		"College of Life Sciences, Sichuan University, Chengdu, 610065, China. College of Resources and Environment, Chengdu University of Information Technology, No. 24 Xuefu Road, Southwest Airport Economic Development Zone, Chengdu, 610225, Sichuan Province, China. Sinopec Southwest Oil and Gas Field Branch, Chengdu, 610096, China. College of Resources and Environment, Chengdu University of Information Technology, No. 24 Xuefu Road, Southwest Airport Economic Development Zone, Chengdu, 610225, Sichuan Province, China. shengyuliu_cuit@163.com"
Journal Title:		Environ Sci Pollut Res Int
Year:		2022
Volume:		20220305
Issue:		34
Page Number:		51717 - 51731
DOI:		10.1007/s11356-022-19483-6
ISSN/ISBN:		1614-7499 (Electronic) 0944-1344 (Linking)
Abstract:		"The objective of this study was to compare the transformation of by-products between single dielectric barrier discharge (SDBD) and double dielectric barrier discharge (DDBD), to optimize the preparation of graphene-based catalysts and apply them in combination with DBD for volatile organic compound degradation. We compared the degradation performance of SDBD and DDBD, prepared, and characterized graphene-based catalysts. SEM, BET, XRD, and FTIR analyses showed that the morphologies and internal structures of the three catalysts were the best when 0.25 mL of [BMIM]PF6 was added. When MnO(x)/rGO, FeO(x)/rGO, and TiO(x)/rGO were used in combination with DDBD, the degradation rates of benzene were found to be 83.5%, 77.2%, and 63.8%, respectively, whereas the O(3) transformation rates were 60%, 79%, and 40%, respectively. Moreover, the NO(2) transformation rates were 70%, 55%, and 42.5%, respectively, whereas the NO transformation rates were 69%, 39%, and 33.5%, respectively. The CO(2) selectivity was 62%, 51%, and 49%, respectively. MnO(x)/rGO exhibited superior performance in the degradation of benzene series, NO transformation, NO(2) transformation, CO(2) selectivity, and energy efficiency. On the other hand, FeO(x)/rGO exhibited superior performance for O(3) transformation. Based upon the XPS analysis, it was found that Mn(3)O(4) and Fe(3)O(4) played a leading role in promoting the degradation of benzene series and the transformation of by-products"
Keywords:		Benzene/chemistry Carbon Dioxide *Graphite/chemistry Nitrogen Dioxide *Volatile Organic Compounds Benzene series By-products Ddbd Graphene Transition metal catalysts;
Notes:		"MedlineLiu, Zongyang Wang, Yifan Zhang, Gengmeng Yang, Jie Liu, Shengyu eng Germany 2022/03/06 Environ Sci Pollut Res Int. 2022 Jul; 29(34):51717-51731. doi: 10.1007/s11356-022-19483-6. Epub 2022 Mar 5"