Sewage sludge in microwave oven: A sustainable synthetic approach toward carbon dots for fluorescent sensing of para-Nitrophenol

doi:10.1016/j.jhazmat.2019.121048

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	Sewage sludge in microwave oven: A sustainable synthetic approach toward carbon dots for fluorescent sensing of para-Nitrophenol
	Hu, Yaoping; Gao, Zhijin
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2020
卷号	382
关键词	GRAPHENE QUANTUM DOTS CHAIN FATTY-ACIDS GREEN SYNTHESIS HYDROTHERMAL TREATMENT FORMATION MECHANISM P-NITROPHENOL WASTE PAPER NITROGEN SULFUR 4-NITROPHENOL
DOI	10.1016/j.jhazmat.2019.121048
英文摘要	Million tons of sewage sludge produced yearly creates a severe pollution problem to environment, and thus needs either to be properly disposed of, or recovered. Here, we demonstrate a value-added utilization of sewage sludge by converting its contained organics into nanosized carbon dots (CDs) with microwave irradiation. This synthetic method, using waste resources as precursors and avoiding the requirement of hazardous reagents and complex procedures, has the great advantage of low cost, environmental friendliness, and easy scalability. The resultant CDs exhibit excellent fluorescence properties with a large quantum yield (QY) of up to 21.7%, higher than the most values of waste-derived CDs. It is found that CDs can serve as a sensitive and selective sensor to detect para-Nitrophenol (p-NP), a toxic pollutant, through fluorescence quenching, giving a linear detection range of 0.2-20 mu M and a detection limit of as low as 0.069 mu M. Systematic investigations suggest that the inner filter effect (IFE) is the dominant sensing mechanism. Moreover, the practical applications of CDs for p-NP assay in real water samples achieve good results.
学科主题	Engineering ; Environmental Sciences & Ecology
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20189]
专题	2020专题
作者单位	Hu, YP (corresponding author), Ningbo Univ, Sch Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Hu, Yaoping,Gao, Zhijin. Sewage sludge in microwave oven: A sustainable synthetic approach toward carbon dots for fluorescent sensing of para-Nitrophenol[J]. JOURNAL OF HAZARDOUS MATERIALS,2020,382.
APA	Hu, Yaoping,&Gao, Zhijin.(2020).Sewage sludge in microwave oven: A sustainable synthetic approach toward carbon dots for fluorescent sensing of para-Nitrophenol.JOURNAL OF HAZARDOUS MATERIALS,382.
MLA	Hu, Yaoping,et al."Sewage sludge in microwave oven: A sustainable synthetic approach toward carbon dots for fluorescent sensing of para-Nitrophenol".JOURNAL OF HAZARDOUS MATERIALS 382(2020).