One-Step Preparation of Green Fluorescent Graphene Quantum Dots from Petroleum Asphalt

Zhao Pinhui; Luo Yi; Kong Lingyun

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One-Step Preparation of Green Fluorescent Graphene Quantum Dots from Petroleum Asphalt

机译：用石油沥青一步制备绿色荧光石墨烯量子点

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Inherently benefiting from the natural nano-size graphene-structure in raw asphalt material. Asphalt-derived graphene quantum dots ( GQDs ) are prepared through, a facile route, one-step chemical oxidation of cheap petroleum asphalt. The as-prepared GQD sample may be well dissolved in water with a good homogeneous size at an average diameter of 2.44 nm, luminescing bright green light by excitation of 365 nm with a high quantum yield up to 16.13%. Furthermore, they are much smaller and thinner than most of the reported GQDs, presenting excellent fluorescent properties, such as excitation-tuned photoluminescence and good resistance to photobleaching.

机译：天然受益于天然沥青原料中的天然纳米级石墨烯结构。沥青衍生的石墨烯量子点（GQD）是通过一种廉价的石油沥青的一步一步化学氧化方法制备的。所制备的GQD样品可以以2.44 nm的平均直径很好地溶解在均匀尺寸好的水中，通过激发365 nm发出亮绿色的光，量子产率高达16.13％。此外，它们比大多数报告的GQD小得多和薄得多，具有出色的荧光特性，例如激发调谐的光致发光和良好的抗光漂白性。

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来源
《Journal of nano research》 |2017年第2017期|76-83|共8页
作者
Zhao Pinhui; Luo Yi; Kong Lingyun;
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作者单位

Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China;

Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China;

Chongqing Jiaotong Univ, Natl & Local Joint Engn Lab Traff Civil Engn Mat, Chongqing 400074, Peoples R China;

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正文语种 eng
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关键词
carbon dot; graphene quantum dot; asphalt; green fluorescence;

机译：碳点;石墨烯量子点;沥青;绿色荧光;

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One-Step Preparation of Green Fluorescent Graphene Quantum Dots from Petroleum Asphalt

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