单壁碳纳米管的控制生长方法研究
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- 英文论文题名：Growth of Single-Walled Carbon Nanotubes with Controlled Structure
- 论文作者：张锦
- 英文论文作者：Jin ZHANG ; Center for Nanochemistry ; College of Chemistry and Molecular Engineering ; Peking University
- 年：2016
- 作者机构：北京大学纳米化学研究中心,北京大学化学与分子工程学院;
- 论文关键词：高密度单壁碳纳米管阵列 ; 半导体性碳管阵列 ; 特定手性角碳管阵列 ; 化学气相沉积
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十九分会：纳米碳材料
- 语种：中文
- 分类号：O613.71;TB383.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十九分会 ; 纳米碳材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：175k
- 原文格式：D
- 会议级别：全国
摘要
特定结构碳纳米管的可控生长是制备其高性能器件的前提条件。本课题组通过对新型碳基催化剂、催化剂载体以及对生长过程的热、动力学的控制,发展了单壁碳纳米管的系列控制生长方法。本报告主要介绍表面上高密度单壁碳纳米管阵列、半导体性碳纳米管阵列和特定手性角单壁碳纳米管阵列的控制生长方法。在阵列密度控制方面,发展了"特洛伊"催化剂生长法,实现了高密度管(150根/微米)阵列的控制生长。在半导体性碳纳米管阵列方面,发展了氧化物催化剂、合金催化剂、单分散Mo_2C催化剂的生长方法,获得了半导体性管比例超过95%的碳管阵列。在手性角的控制方面,发展了碳纳米管的热、动力学控制生长方法,实现了(2m,m)、(n,n-1)、(n,n-2)等特定手性角单壁碳纳米管阵列的控制生长。
Direct growth single-walled carbon nanotubes(SWNTs) with controlled structures still remains many challenges. In this talk, we will focus on the controlled growth of SWNTs arrays with ultra-high density, high ratio semiconducting properties and speical chiral angles. For the SWNTs arrays with ultra-high density, Trojan catalysts(released from substrate) was developed and the density can be as high as 150 tubes/μm. Combining Trojan catalysts with Mo nanoparticles as cooperating catalysts, the ultra-high density SWNTs arrays with wafer-scale area can be obtained. For the SWNTs arrays with semiconducting properties, oxides catalysts with oxygen vacancy, bimetal catalysts and uniform Mo_2C catalyst were used to grow semiconducting SWNTs arrays and ratio of semiconducting tubes can be higher than 95%. For the SWNTs arrays with speical chiral angles, based on the analysis the thermodynamics and kinetics of SWNTs growth, horizontally(2m, m) SWNT arrays with chiral angle of 19.1°, tubes arrays with small chiral angles(less than 10°) and near-armchair tubes((n, n-1) or(n, n-2)) can be grown under different conditions.
Direct growth single-walled carbon nanotubes(SWNTs) with controlled structures still remains many challenges. In this talk, we will focus on the controlled growth of SWNTs arrays with ultra-high density, high ratio semiconducting properties and speical chiral angles. For the SWNTs arrays with ultra-high density, Trojan catalysts(released from substrate) was developed and the density can be as high as 150 tubes/μm. Combining Trojan catalysts with Mo nanoparticles as cooperating catalysts, the ultra-high density SWNTs arrays with wafer-scale area can be obtained. For the SWNTs arrays with semiconducting properties, oxides catalysts with oxygen vacancy, bimetal catalysts and uniform Mo_2C catalyst were used to grow semiconducting SWNTs arrays and ratio of semiconducting tubes can be higher than 95%. For the SWNTs arrays with speical chiral angles, based on the analysis the thermodynamics and kinetics of SWNTs growth, horizontally(2m, m) SWNT arrays with chiral angle of 19.1°, tubes arrays with small chiral angles(less than 10°) and near-armchair tubes((n, n-1) or(n, n-2)) can be grown under different conditions.
引文
[1]Chemical Vapor Deposition Synthesis of Near Zigzag Single-walled Carbon Nanotubes with Stable Tube-Catalyst Interface,Science Advance,2016,In Press.
[2]Growth of High-Density Horizontally Aligned SWNT Arrays using Trojan Catalysts,Nat.Commun.6(2015),6099.
[3]Helicity-dependent single-walled carbon nanotube alignment on graphite for helical angle and handedness recognition,Nat.Commun.4(2013),2205.
[4]Diameter-Specific Growth of Semiconducting SWNT Arrays Using Uniform Mo2C Solid Catalyst,J.Am.Chem.Soc.137(28)(2015),8904-8907.
[5]Selective Scission of C–O and C–C Bonds in Ethanol using Bimetal Catalysts for the Preferential Growth of Semiconducting SWNT Arrays,J.Am.Chem.Soc.137(3)(2015),1012-1015.
[2]Growth of High-Density Horizontally Aligned SWNT Arrays using Trojan Catalysts,Nat.Commun.6(2015),6099.
[3]Helicity-dependent single-walled carbon nanotube alignment on graphite for helical angle and handedness recognition,Nat.Commun.4(2013),2205.
[4]Diameter-Specific Growth of Semiconducting SWNT Arrays Using Uniform Mo2C Solid Catalyst,J.Am.Chem.Soc.137(28)(2015),8904-8907.
[5]Selective Scission of C–O and C–C Bonds in Ethanol using Bimetal Catalysts for the Preferential Growth of Semiconducting SWNT Arrays,J.Am.Chem.Soc.137(3)(2015),1012-1015.