胡征
主要在纳米材料科学、场电子发射、等离子体方法(技术)及应用等交叉学科领域开展科研工作。
个性化签名
- 姓名:胡征
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学术头衔:
博士生导师, “973”、“863”首席科学家, 国家杰出青年科学基金获得者
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学科领域:
物理化学
- 研究兴趣:主要在纳米材料科学、场电子发射、等离子体方法(技术)及应用等交叉学科领域开展科研工作。
胡征 男,1964年4月出生于江苏苏州。南京大学物理系获学士、硕士、博士学位(1981-1991),南京大学化学系博士后(1991-1993),副教授(1993-1999),教授、博导(1999-至今)。曾在德国卡斯卢厄研究中心材料研究所作博士后1年(1996-1997),新加坡国立大学材料系访问科学家1个月(2001),英国剑桥大学工程系访问学者6个月(华英学者)(2005.9.-2006.3.)。主要在纳米材料科学、场电子发射、等离子体方法(技术)及应用等交叉学科领域开展科研工作,在碳纳米管及III族氮化物一维纳米结构新材料、过渡金属—类金属非晶态合金纳米材料的制备方法、生长机制、结构表征、性质研究等方面作出了一定成绩:例如,提出并实验验证了以苯为前驱物催化生长碳纳米管的六元环生长机制,在碳纳米管生长机制这一前沿课题上作出了贡献;发现并表征了结构新颖、截面为六边形的角面AlN纳米管,并通过构建理论模型和计算阐明了形成角面AlN纳米管的科学依据,对于将纳米管从层状结构材料体系拓展至非层状结构材料体系有科学意义;发展了成本低、条件温和(~750?C)的催化合成AlN纳米锥准定向阵列的方法和技术,获得了性能良好、具有自主知识产权的新型场发射材料等。已在J. Am. Chem. Soc.、J. Phys. Chem. B、Appl. Phys. Lett.、Small、中国科学等国内外重要学术刊物发表论文100余篇,被他人正面引用300多次,被德国、美国科学性网站专题评述,申请国家发明专利11项(7项已授权)。在国际会议作邀请报告十余次并多次担任分会主席。J. Am. Chem. Soc.、Adv. Mater.、J. Phys. Chem. B等刊物审稿人,Chinese Phys. Lett.特约评审,中国真空学会常务理事、中国微米纳米技术学会理事及2个专业委员会委员,《Journal of Nanoelectronics and Optoelectronics》、《Plasma Science and Technology》等杂志编委。获2005年度国家杰出青年基金资助,曾主持(含进行)“863”、国家自然科学基金、教育部“新世纪优秀人才支持计划”、江苏省“高技术”等十余个国家和省部级项目。获中国化学会青年化学奖(1997)、江苏省科协青年科技奖 (1994)、江苏省科技进步二等奖(2000)、纪念博士后制度实施20周年“江苏省优秀博士后”(2005)等奖励或荣誉。已出站博士后4名,培养出7名博士、8名硕士。目前课题组有青年教师、博士后、博士生、硕士生等成员约15人。现担任教育部介观化学重点实验室主任(2004-),江苏省纳米技术重点实验室副主任、学术委员会委员(2003-),南京大学纳米科技中心副主任等学术职务。
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2165
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766
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成果数
10
【期刊论文】Boron Nitride Nanocages Synthesized by a Moderate Thermochemical Approach**
胡征, Yi Pan, Kaifu Huo, Yemin Hu, Jijiang Fu, Yinong Lu, Zhendong Dai, Zheng Hu, * and Yi Chen
small 2005, 1, No.12, 1199-1203,-0001,():
-1年11月30日
boron
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【期刊论文】Synthesis of boron nitride nanowires
胡征, K.F. Huo, Z. Hu, a), F. Chen, J.J. Fu, and Y. Chen B.H. Liu and J. Ding Z.L. Dong and T. White
Appl. Phys. Lett., Vol. 80, No.19, 13 May 2002,-0001,():
-1年11月30日
A chemical method has been developed for synthesizing boron nitride nanowires through the reaction of a mixture gas of nitrogen (N2) and ammonia (NH3) over nanoscale a-FeB particles at 1100℃. Boron content in the product comes from the a-FeB catalyst itself. Transmission electron microscopic image indicates an abundant quantity of BN nanowires with diameter about 20nm and length up to several tens of microns. The product has also been characterized by high-resolution electron microscopy and electron energy loss spectrometer. The perfectly straight lattice fringes with an interlayer spacing of about 0.333nm corresponding to d0002 spacing of h-BN indicate that the BN nanowires are well crystallized. Also, a growth mechanism has been speculated.
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【期刊论文】Synthesis and Optical Properties of Gallium Phosphide Nanotubes
胡征, Qiang Wu, Zheng Hu, *, Chun Liu, Xizhang Wang, and Yi Chen, Yinong Lu
19720 J. Phys. Chem. B, Vol. 109, No.42, 2005,-0001,():
-1年11月30日
Gallium phosphide nanotubes with zinc blende structure were synthesized for the first time. The as-prepared GaP nanotubes are polycrystalline with diameters of 30-120nm and occasionally partially filled. The growth has been reasonably proposed to follow vapor-liquid-solid (VLS) mechanism. The integration of the nanotubular structure with the unique intrinsic semiconducting properties of GaP might bring GaP nanotubes some novel optical and electronic properties and applications.
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胡征, Hua Xu, Jing Ma, *, Xin Chen, Zheng Hu, Kaifu Huo, and Yi Chen
J. Phys. Chem. B, Vol. 108, No.13, 2004 4025,-0001,():
-1年11月30日
A possible smallest single-walled BN nanotube with the diameter of 0.4nm is proposed. The studied nanotube is of armchair (3,3) and thought to be associated with the BN fullerene, B12N12. We have applied the ab initio MP2/6-31G//HF/6-31G method to investigate the growth mechanisms of this nanotube from B12N12. Our results show that a B12N12 fullerene may react with B2H6 and NH3 to form an armchair (3,3) tubular structure under certain experimental conditions such as high temperature. The armchair (3,3) tube can continuously incorporate B and N atoms to grow and can also disassociate H2 to close into a half-B12N12 cap. The growth of the tube is predicted to be favorable to the capping of the tube in an atmosphere with B2H6 and NH3 in it. And the cap of the tube is relatively easier to be opened by H2 or B2H6 and NH3 to convert to a growing open-ended tube.
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胡征, K.F. Huo, Z. Hu, *, J.J. Fu, H. Xu, X.Z. Wang, and Y. Chen Y.N. Lu
J. Phys. Chem. B, Vol. 107, No.41, 2003 11317,-0001,():
-1年11月30日
Periodic spindle-unit boron nitride (BN) nanotubes with buglelike open-end tips have been found in the product by nitriding Fe-B nanoparticles at 1100℃ with a mixture of nitrogen and ammonia gas. The microstructure was well-characterized by high-resolution transmission electron microscopy (HRTEM) and energy-dispersive X-ray spectroscopy (EDX). The diameter of this BN nanotube shows a decreasing tendency along the growth direction. For each spindle unit, the outer diameter decreases steeply and then increases gradually, accompanied by thinning of the wall thickness along the growth direction. Some spindle units are partially occupied by the iron-containing catalyst particles at the hemispherical-like ends. An improved stress-induced sequential growth model has been reasonably deduced accordingly, with which the formation process of this novel BN nanostructure could be well understood.
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【期刊论文】Synthesis and Optical Characterization of Aluminum Nitride Nanobelts
胡征, Qiang Wu, Zheng Hu, *, Xizhang Wang, and Yi Chen, Yinong Lu
J. Phys. Chem. B, Vol. 107, No.36, 2003 9727,-0001,():
-1年11月30日
Aluminum nitride nanobelts with hexagonal structure were successfully synthesized by evaporating aluminum powder in ammonia/nitrogen atmosphere at 1200℃. The as-prepared AlN nanobelts have a rectangular cross section with a width of 30-500nm and length of about 100m. The optical characterization indicates that the vibration modes of the AlN nanobelt agree well with those of AlN film despite its nanobelt geometry. This nanobelt geometry of AlN could be important for the construction of GaN-based nanoheterostructures in future nanoelectronics.
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【期刊论文】AlN Nanotube: Round or Faceted?
胡征, Xin Chen, †, Jing Ma, *, ‡, Zheng Hu, Qiang Wu, † and Yi Chen†
,-0001,():
-1年11月30日
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【期刊论文】Vapor-Solid Growth and Characterization of Aluminum Nitride Nanocones
胡征, Chun Liu, †, Zheng Hu, *, Qiang Wu, Xizhang Wang, Yi Chen, Hai Sang, ‡, Jianmin Zhu, Shaozhi Deng, § and Ningsheng Xu§
J. AM. CHEM. SOC. 9 VOL. 127, NO.4, 2005 1319,-0001,():
-1年11月30日
Aluminum nitride nanostructures are attractive for many promising applications in semiconductor nanotechnology. Herein we report on vapor-solid growth of quasi-aligned aluminum nitride nanocones on catalyst-coated wafers via the reactions between AlCl3 vapor and NH3 gas under moderate temperatures around 700℃, and the growth mechanism is briefly discussed. The as-prepared wurtzite aluminum nitride nanocones grow preferentially along the c-axis with adjustable dimensions of the sharp tips in the range of 20-60nm. The photoluminescence spectrum reveals a broad blue emission band with a fine photon structure while the field emission study shows a notable emission current with a moderate turn-on field as expected, suggesting their potential applications in light and electron emission nanodevices.
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胡征, Yajun Tian, Zheng Hu, *, Yong Yang, Xizhang Wang, Xin Chen, Hua Xu, Qiang Wu, Weijie Ji, and Yi Chen
1182 J. AM. CHEM. SOC. 9 VOL. 126, NO.4, 2004,-0001,():
-1年11月30日
By using the in situ thermal analysis-mass spectroscopic technique, combined with transmission electron microscopic characterization of the carbon nanotube (CNT) product, we have studied the chemical vapor deposition (CVD) growth of CNTs with Fe-Co/Á-Al2O3 catalyst and benzene precursor in the range of room temperature to 700℃. The growth process has been clearly illuminated, which starts from the reduction of catalyst around 645℃ followed by the dissociation of carbon-hydrogen bonds of benzene and the sequential growth of CNTs. A surprising fact is that no possible hydrocarbon species derived from benzene was detected, indicating that the carbon-carbon bond was not broken under our experimental conditions. All of the experimental results strongly reinforce the six-membered-ring-based growth model, and a schematic elucidation is presented accordingly. This in situ study not only reveals the unique and convincing information directly related to the growth mechanism from the involved chemistry, but also provides a powerful way to clarify the mechanism of CVD synthesis of CNTs with other precursors.
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【期刊论文】Synthesis and Characterization of Faceted Hexagonal Aluminum Nitride Nanotubes
胡征, Qiang Wu, †, Zheng Hu, *, Xizhang Wang, Yinong Lu, ‡, Xin Chen, Hua Xu, † and Yi Chen†
,-0001,():
-1年11月30日
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