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Characterization of structural transformation of graphene oxide to reduced graphene oxide during thermal annealing

机译:石墨烯氧化物结构变化的表征在热退火期间石墨烯氧化物

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摘要

Graphene enticed the scientific community for its interesting properties since its discovery. Among different synthesis routes of graphene, reduction of graphene oxide (GO) is mostly preferred because of scalability and advantage of modulation of properties of the end product. Thermal reduction of GO is considered to be the simplest and economic among different reduction techniques. The current work reports an experimental analysis of the structural evolution of GO to reduced graphene oxide (rGO) during thermal treatment. GO has been thermally annealed at an optimized temperature of 350 °C in ambient. Thermal reduction is observed after 7 min of annealing and confirmed by shifting of the first major peak from 12° to 23° in X-ray diffraction pattern. Significant carbon content enrichment and exfoliation are two aspects of the thermal reduction of GO. Carbon content suddenly enriches from 38 wt% in GO to 77 wt%. Exfoliation is confirmed by morphological alterations and decrease in carbon layers from eleven to three.
机译:石墨烯自发现以来为其有趣的物业诱导科学界。在不同的石墨烯的不同合成途径中,石墨烯氧化物(GO)的还原主要是优选的,因为可伸缩性和结束产品性质的优点。 Go的热量减少被认为是不同减少技术中最简单和经济的。目前的工作报告了在热处理期间转到氧化石墨烯氧化物(RGO)的结构演变的实验分析。在环境温度下在350°C的优化温度下热退火。在退火7分钟后观察到热还原,并通过在X射线衍射图案中将第一主峰从12°变为23°的第一主峰来证实。显着的碳含量富集和剥离是GO的热量减少的两个方面。碳含量突然浓缩38重量%,转至77重量%。通过形态改变证实了剥离,并从11到三个中减少碳层。

著录项

  • 来源
    《Journal of Materials Research》 |2020年第9期|1197-1204|共8页
  • 作者单位

    Department of Chemical Engineering Indian Institute of Technology Kharagpur West Bengal 721302 India;

    Department of Chemical Engineering Indian Institute of Technology Kharagpur West Bengal 721302 India;

    Department of Mechanical Engineering Indian Institute of Technology Kharagpur West Bengal 721302 India;

    Department of Chemical Engineering Indian Institute of Technology Kharagpur West Bengal 721302 India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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