Electric Field Effect on the Reactivity of Solid State Materials: The Case of Single Layer Graphene
文献类型：期刊论文
| 作者 | Kim, Min A.; Qiu, Nianxiang; Li, Zhiting; Huang, Qing; Chai, Zhifang; Du, Shiyu; Liu, Haitao |
| 刊名 | ADVANCED FUNCTIONAL MATERIALS
 |
| 出版日期 | 2020 |
| 卷号 | 30期号:13 |
| 关键词 | CHEMICAL-REACTIVITY ELECTROSTATIC CATALYSIS PHOTOREDOX CATALYSIS RAMAN-SPECTROSCOPY DOPED GRAPHENE OXIDATION CARBON ACTIVATION GRAPHITE MOLECULE |
| DOI | 10.1002/adfm.201909269 |
| 英文摘要 | This manuscript reports the first example of charge-doping-induced reactivity enhancement in macroscopic-sized solid state material. Single layer graphene is supported on a Si wafer that has a 300 nm thick SiO2 layer and is heated photothermally in air to approximate to 240 degrees C. Applying both positive and negative pulsed back gate voltages increases the rate of graphene oxidation, as measured by the change of I-D/I-G ratio using Raman spectroscopy. The fact that both electron and hole doping increase the reactivity argues against electrochemical oxidation and suggests a new mechanism is at play. The enhancement effect increases with the magnitude and the frequency of the square wave back gate voltage. Density functional theory calculations indicate that the activation barriers for O-2 insertion into graphene and desorption of CO2 decrease in the presence of an electric field. This study suggests charge doping as a new approach that can modulate the reactivity of solid state materials in real time and compliment chemical-based catalysis. |
| 学科主题 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19982]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Liu, HT (corresponding author), Univ Pittsburgh, Dept Chem, Pittsburgh, PA 15260 USA. 2.Du, SY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Kim, Min A.,Qiu, Nianxiang,Li, Zhiting,et al. Electric Field Effect on the Reactivity of Solid State Materials: The Case of Single Layer Graphene[J]. ADVANCED FUNCTIONAL MATERIALS,2020,30(13). |
| APA | Kim, Min A..,Qiu, Nianxiang.,Li, Zhiting.,Huang, Qing.,Chai, Zhifang.,...&Liu, Haitao.(2020).Electric Field Effect on the Reactivity of Solid State Materials: The Case of Single Layer Graphene.ADVANCED FUNCTIONAL MATERIALS,30(13). |
| MLA | Kim, Min A.,et al."Electric Field Effect on the Reactivity of Solid State Materials: The Case of Single Layer Graphene".ADVANCED FUNCTIONAL MATERIALS 30.13(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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