Sustainable Feasibility of the Environmental Pollutant Soot to Few-Layer Photoluminescent Graphene Nanosheets for Multifunctional Applications

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• 作者：Kumud Malika Tripathi ; Anupriya Singh ; Anshu Bhati ; Sabyasachi Sarkar ; Sumit Kumar Sonkar
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：December 5, 2016
• 年：2016
• 卷：4
• 期：12
• 页码：6399-6408
• 全文大小：630K
• ISSN：2168-0485

文摘

A simple and realistic approach to the utilization of waste “black carbon particulates of petrol soot” for the fabrication of few-layer water-soluble photoluminescent graphene nanosheets (wsGNS) is described herein. Direct transformation of pollutant soot to fluorescent nanocarbons can be a promising approach for providing some economic benefits along with a clean atmosphere. Oxidation of petrol soot resulted in the isolation of the water-soluble version of graphene nanosheets (GNS). Oxidative treatment is a key step in preventing the aggregation of the GNS and rendering them water-soluble. A high degree of “self-passivation” on wsGNS provides evidence of the tunable photoluminescent emissions over a broad range of the visible spectrum with slight extension in the near-infrared region. The photoluminescent properties of wsGNS are used here for the selective detection of hexavalent chromium ions with a detection limit of 0.51 μM and for imaging HeLa cells.