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In‐Liquid Plasma Synthesis of Nanographene with a Mixture of Methanol and 1‐Butanol
ChemNanoMat ( IF 2.6 ) Pub Date : 2020-01-22 , DOI: 10.1002/cnma.201900676 Atsushi Ando 1 , Kenji Ishikawa 1 , Keigo Takeda 2 , Takayuki Ohta 2 , Masafumi Ito 2 , Mineo Hiramatsu 2 , Hiroki Kondo 1 , Makoto Sekine 1 , Masaru Hori 1
ChemNanoMat ( IF 2.6 ) Pub Date : 2020-01-22 , DOI: 10.1002/cnma.201900676 Atsushi Ando 1 , Kenji Ishikawa 1 , Keigo Takeda 2 , Takayuki Ohta 2 , Masafumi Ito 2 , Mineo Hiramatsu 2 , Hiroki Kondo 1 , Makoto Sekine 1 , Masaru Hori 1
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Nanometer‐size graphene sheets (nanographene) were synthesized by the in‐liquid plasma method employing a mixture of alcohols. Pure methanol in‐liquid plasma was found to not synthesize any nanographene. Pure ethanol synthesized nanographene with high crystallinity. Highly crystalline nanographene with a narrow full width‐half maximum of the Raman scattering G‐band (FWHMG) was obtained by mixing 1‐butanol with methanol. This is due to the formation of carbon ring structures being inhibited by the addition of methanol. The ratio of added methanol determined the nanographene crystallinity and yield under a trade‐off relationship, allowing the crystallinity and nanographene yield to be controlled by controlling the ratio. Gas chromatography‐mass spectrometric analysis of by‐products in the liquids’ supernatant showed that the crystallinity of the synthesized nanographene correlated with the ratio of carbon over oxygen of the alcohol precursors (C/O), i. e., the amount of hydroxyl groups in the liquids, and hence controlling the C/O ratio can be used to control the graphene crystallinity in the in‐liquid plasma synthesis.
中文翻译：
甲醇和1-丁醇混合物的液相等离子体合成纳米石墨烯
纳米级石墨烯片（纳米石墨烯）是通过采用液体内等离子体方法，使用醇类混合物合成的。发现纯甲醇在液体中的血浆不能合成任何纳米石墨烯。纯乙醇合成具有高结晶度的纳米石墨烯。高度结晶的纳米石墨烯，其拉曼散射G带的全宽最大值的宽度很窄（FWHM G）是通过将1-丁醇与甲醇混合得到的。这是由于添加甲醇抑制了碳环结构的形成。甲醇的添加比例决定了折衷关系下纳米石墨烯的结晶度和产率，通过控制该比例可以控制结晶度和纳米石墨烯的产率。液体上清液中副产物的气相色谱-质谱分析表明，合成的纳米石墨烯的结晶度与醇前体的碳/氧比（C / O）相关，即。例如，液体中的羟基数量以及因此控制C / O比率可用于控制液体中等离子体合成中的石墨烯结晶度。
更新日期：2020-01-22
中文翻译：
甲醇和1-丁醇混合物的液相等离子体合成纳米石墨烯
纳米级石墨烯片（纳米石墨烯）是通过采用液体内等离子体方法，使用醇类混合物合成的。发现纯甲醇在液体中的血浆不能合成任何纳米石墨烯。纯乙醇合成具有高结晶度的纳米石墨烯。高度结晶的纳米石墨烯，其拉曼散射G带的全宽最大值的宽度很窄（FWHM G）是通过将1-丁醇与甲醇混合得到的。这是由于添加甲醇抑制了碳环结构的形成。甲醇的添加比例决定了折衷关系下纳米石墨烯的结晶度和产率，通过控制该比例可以控制结晶度和纳米石墨烯的产率。液体上清液中副产物的气相色谱-质谱分析表明，合成的纳米石墨烯的结晶度与醇前体的碳/氧比（C / O）相关，即。例如，液体中的羟基数量以及因此控制C / O比率可用于控制液体中等离子体合成中的石墨烯结晶度。
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