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DOI	10.3390/catal9030280
	Preparation and catalytic performance of expanded graphite for oxidation of organic pollutant
	Lan R.; Su W.; Li J.
发表日期	2019
ISSN	20734344
卷号	9 期号:3
英文摘要	A classic carbon material—expanded graphite (EG), was prepared and proposed for a new application as catalysts for activating peroxydisulfate (PDS). EG samples prepared at different expansion temperatures were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and other methods. It was observed that there existed a remarkable synergistic effect in the EG/PDS combined system to degrade Acid Red 97 (AR97). Unlike other carbon material catalysts, sp 2 carbon structure may be the main active site in the catalytic reaction. The EG sample treated at 600 C demonstrated the best catalytic activity for the activation of PDS. Degradation efficiency of AR97 increased with raising PDS dosage and EG loadings. The pH of aqueous solution played an important role in degradation and adsorption, and near-neutrality was the optimal pH in this research. It was assumed that the radical pathway played a dominant role in AR97 degradation and that oxidation of AR97 occurred in the pores and interface layer on the external surface of EG by SO 4 and OH, generated on or near the surface of EG. The radical oxidation mechanism was further confirmed by electron paramagnetic resonance spectroscopy. The EG sample could be regenerated by annealing, and the catalytic ability was almost fully recovered. by the authors. Licensee MDPI, Basel, Switzerland.
英文关键词	Acid red 97; Degradation; Expanded graphite; Mechanism; Sodium peroxydisulfate
来源期刊	Catalysts
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176218
作者单位	College of Chemistry and Material Science, Langfang Normal University, Langfang, 065000, China; College of Chemistry and Environmental Science, Hebei University, Baoding, 071000, China
推荐引用方式 GB/T 7714	Lan R.,Su W.,Li J.. Preparation and catalytic performance of expanded graphite for oxidation of organic pollutant[J],2019,9(3).
APA	Lan R.,Su W.,&Li J..(2019).Preparation and catalytic performance of expanded graphite for oxidation of organic pollutant.Catalysts,9(3).
MLA	Lan R.,et al."Preparation and catalytic performance of expanded graphite for oxidation of organic pollutant".Catalysts 9.3(2019).