Electric Field Effect on the Reactivity of Solid State Materials: The Case of Single Layer Graphene

doi:10.1002/adfm.201909269

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Electric Field Effect on the Reactivity of Solid State Materials: The Case of Single Layer Graphene
	Kim, Min A.; Qiu, Nianxiang ; Li, Zhiting ; Huang, Qing ; Chai, Zhifang ; Du, Shiyu ; Liu, Haitao
刊名	ADVANCED FUNCTIONAL MATERIALS
	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
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19982]
专题	2020专题
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).