不锈钢衬底上直接热化学气相沉积单层和少层石墨烯
Single- and few-layer graphene growth on stainless steel substrates by direct thermal chemical vapor deposition
摘要：
石墨烯在基础科学和应用研究的浓厚兴趣，强调需要一个经济的手段合成it. We报告的方法，用于在市售的不锈钢箔使用直接热化学气相沉积石墨烯的合成。我们的合成方法和使用相对便宜的前体，如乙醇（CH 3CH 2 OH）作为碳源和SS 304作为底物，被证明是经济可行的。使用共焦拉曼显微镜/光谱确认单层和少层石墨烯的存在。进一步使用X射线光电子能谱测量来确定不锈钢中存在的各种元素物质对石墨烯生长的影响。探讨了冷却速率对促进或阻碍石墨烯生长的某些化学物种（Fe、Cr和Mn的氧化物）表面迁移的作用。对表面上存在的化学物质的这种分析对于基于石墨烯的催化研究可能是有希望的。
英文摘要：
Steeping interest on graphene research in basic sciences and applications emphasizes the need for an economical means of synthesizing it. We report a method for the synthesis of graphene on commercially available stainless steel foils using direct thermal chemical vapor deposition. Our method of synthesis and the use of relatively cheap precursors such as ethanol (CH3CH2OH) as a source of carbon and SS 304 as the substrate, proved to be economically viable. Presence of single- and few-layer graphene was confirmed using confocal Raman microscopy/spectroscopy. X-ray photoelectron spectroscopic measurements were further used to establish the influence of various elemental species present in stainless steel on graphene growth. Role of cooling rate on surface migration of certain chemical species (oxides of Fe, Cr and Mn) that promote or hinder the growth of graphene is probed. Such analysis of the chemical species present on the surface can be promising for graphene based catalytic research.
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