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Large-Scale Synthesis and Field Emission Properties of Single Crystal TiO2.Nanorods

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Large-Scale Synthesis and Field Emission Properties of Singl...

Photo-induced effect in the layered perovskite manganite La_(1.2.Sr_(1.8)Mn_(1.8)Co_(0.2.O_(7)

中国真空学会2.12.术年会

作者： Chen Jianbiao 1,Wang Chengwei 1,2.Li Dongsheng 1,Zhu Weidong 1,Zhou Feng 2.1.key laboratory of Atomic and Molecular {2.&Functional Materials of Gansu Province,College of {2. and Electronic Engineering,Northwest Normal University,lanzhou 730070,china 2.state key laboratory of solid lubrication,lanzhou {12. of chemical {2.,chinese academy of Science,lanzhou 730000,china)

A facile growth procedure by low-pressure chemical vapor deposition(LCVD)has been developed to obtain single crystal TiO2.nanorods on Ni-coated Ti *** morphology of samples is critically depended on the growth *** a range of growth temperature of 700～800°C,single crystal TiO2.nanorods are obtained in *** nanorods are high purity rutile with a preferential orientation[110].On a critical temperature 850°C,the nanorods can not gain;the nanocrystal grain film is formed *** the samples as the field emitters directly,the field emission(FE)of both TiO2.nanorods and grain film were investigated at room *** the growth temperature increases from 700°C to 750,and 800°C,the turn-on field of the nanorods decreases from 3.96 V/μm to 2.98,and 2.16 V/μm,*** TiO2.grain film shows a higher turn on field of 7.46 V/μ*** nanorod films show good FE stability during 480 *** well FE properties of emitters may be related to numerous advantages of TiO2.nanorods,such as high aspect ratios,low work function(4.5 eV),well chemical stability and good contact with Ti *** addition,the temperature dependence of FE from the nanorod synthesized at 750°C has been *** environmental temperature of emission tests increases from room temperature(17°C)to 2.7°C,the turn-on field of the nanorods decreases from 2.16 to 1.76 V/μm,whereas the current density *** is clear that the FE properties of TiO2.nanorods are critically affected by environmental *** behaviors may be attributed to the reduction of effective work function of emission site with a moderate increase of environmental temperature.

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Science china(physics,Mechanics & Astronomy) 2004年第1期47卷 113-120页

作者： ZHANG Ruili1, DAI Jianming1, SONG Wenhai1, MA Yongqing1, YANG Jie1 & SUN Yuping1,2.1. key laboratory of Internal Friction and Defects in {2.s, institute of {2. state physics, chinese academy of sciences, Hefei 2.0031, china 2. National laboratory of {2. state Microstructures, Nanjing University, Nanjing 2.0008, china Correspondence should be addressed to Zhang Ruili (email: rlzhang@***) Received September 1, 2.03 key laboratory of Internal Friction and Defects in {2.s Institute of Solid State Physics Chinese Academy of Sciences Hefei 230031 China National laboratory of solid {2. Microstructures Nanjing University Nanjing 210008 China

It is helpful to study the photo-induced effect in the perovskite manganites not only for elucidating the mechanism of colossal magnetoresistance (CMR) effect but also for potential applications in technology. The laser-induced effect in the Co doping layered perovskite manganites La1.2.r1.8Mn1.8Co0.2.7 is studied in this paper and the obtained results are also compared with that gained in the Nd-doping manganites with cubic perovskite structure.

关键词： laser, layered perovskite manganites, photo-induced effect, spin-state.

Tribological Investigation of Electrodeposited Nanocrystalline Nickel Matrix Composite Coatings Containing Nano-and Micro-Titania Particles

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Tribological Investigation of Electrodeposited Nanocrystalli...

SELECTIVE HYDROGENATION OF CINNAMALDEHYDE OVER Pt-Sn/Al2.3 CATALYSTS

第四届全国纳米材料会议

作者： Sun Xiaojun Li Jiangong Qiao Junqiang Liu Weimin institute of Materials Science and Engineering,lanzhou University, lanzhou,730000 state key laboratory of solid lubrication,chinese academy of sciences, lanzhou,730000)

＜正＞Nanocrystalline nickel matrix composite coatings containing nano- and micro-titania particles were electrodeposited on copper substrates from a modified Watts nickel bath. The as-deposited coatings were characterized by X-ray diffraction （XRD）,scanning election microscope （SEM）,energy dispersive X-ray （EDX） analysis, Vickers microhardness （HV） tests and in-vacuo pin-on-disc friction （PODF） tests. The results showed that the friction coefficient and wear rate of both coatings decrease with increasing content of titania particles in the nanocomposite coatings. Compared with the coatings containing micro-particles, the coatings containing titania nanoparticles have a higher wear resistance and lower friction coefficient.

关键词： tribology nanocomposite coatings electrodeposition pin-on-disc test nickel titania

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chinese Journal of Catalysis 1995年第2期 87-88页

作者： Li, Tao Xu,Yi-de and Li Guang-Jin(state key {2. of Catalysis,Dalian institute of chemical physics,chinese academy of sciences,Dalian 11602.)

ＳＥＬＥＣＴＩＶＥＨＹＤＲＯＧＥＮＡＴＩＯＮＯＦＣＩＮＮＡＭＡＬＤＥＨＹＤＥＯＶＥＲＰｔ－Ｓｎ／Ａｌ２Ｏ３ＣＡＴＡＬＹＳＴＳ￥Ｌｉ，Ｔａｏ；Ｘｕ，Ｙｉ－ｄｅａｎｄＬｉ；Ｇｕａｎｇ－Ｊｉｎ(ＳｔａｔｅＫｅｙＬａｂｏｒａ... 详细信息

ＳＥＬＥＣＴＩＶＥＨＹＤＲＯＧＥＮＡＴＩＯＮＯＦＣＩＮＮＡＭＡＬＤＥＨＹＤＥＯＶＥＲＰｔ－Ｓｎ／Ａｌ２Ｏ３ＣＡＴＡＬＹＳＴＳ￥Ｌｉ，Ｔａｏ；Ｘｕ，Ｙｉ－ｄｅａｎｄＬｉ；Ｇｕａｎｇ－Ｊｉｎ(ＳｔａｔｅＫｅｙＬａｂｏｒａｔｏｒｙｏｆＣａｔａｌｙｓｉｓ，...

关键词： cinnamaldehyde selective hydrogenation cinnamyl alcohol Pt-Sn Catalyst

Generation of surface electrons in femtosecond laser-solid interactions

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Science china(physics,Mechanics & Astronomy) 2006年第3期49卷 335-340页

作者： XU Miaohua1, LI Yutong1, YUAN Xiaohui1,2. ZHENG Zhiyuan1, LIANG Wenxi1, YU Quanzhi1, ZHANG Yi1, WANG Zhaohua1, WEI Zhiyi1 & ZHANG Jie1 1. key laboratory of Optical {2., institute of {2., chinese academy of sciences, Beijing 100080, china 2. state key laboratory of Transient Optics Technology, chinese academy of sciences, Xi’an 710068, china key laboratory of Optical {2. Institute of Physics Chinese Academy of Sciences Beijing 100080 China state key {2. of Transient Optics Technology Chinese Academy of Sciences Xi’an 710068 China

The characteristics of hot electrons produced by p-polarized femtosecond laser-solid interactions are studied. The experimental results show that the outgoing electrons are mainly emitted in three directions: along the target surface, the normal direction and the laser backward direction. The electrons flowing along the target surface are due to the confinement of the electrostatic field and the surface magnetic field, while the electrons in the normal direction due to the resonant absorption.

关键词： hot electrons,surface magnetic field,femtosecond laser pulses

THERMAL DECOMPOSITION OF THE[Fe6C（CO）16]2. ON ALUMINA AND MODIFIED ALUMINA

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Journal of Energy Chemistry 1993年第3期 195-202页

作者： WEI Xue-Hong YIN Yuan-Qi WANG Hong-Li LI Can XIN Qin lanzhou institute of chemical physics, Academia Sinica lanzhou, Cansu {2. state key laboratory of Catalysis Dalian institute of chemical physics, Academia Sinica Dalian Liaoning 11602.

Thermal decomposition of the supported carbido cluster was investi-gated by in situ FT-IR spectroscopy in a temperature range of 2.-300℃. Thesupported clusters on alumina and modified alumina with Me4NBr or PPNClshow quite different decomposition ways in vacuo and under various atmo-spheres, such as H2. CO, N2.nd CO + H2. The different decomposition waysprobably lead to the different metal sites of the final catalyst.

关键词： Fe ON ALUMINA AND MODIFIED ALUMINA THERMAL DECOMPOSITION OF THE[Fe6C CO

2.Al　MAS　NMR　STUDY　OF　INTERACTION　BETWEENMoANDHZSM┐5INMo／HZSM┐5CATALYSTS

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chinese Journal of Catalysis 1996年第3期 12-13页

作者： Xu Yide 1, Liu Wei 1, Qiu Jianqing 2. Yang Nianhua 2. Guo Xiexian 1 (1 state key {2. of Catalysis, Dalian institute of chemical physics, chinese academy of sciences, Dalian 11602. 2.state key {2. of MR & AMP, Wuhan institute of Ph

２７ＡｌＭＡＳＮＭＲＳＴＵＤＹＯＦＩＮＴＥＲＡＣＴＩＯＮＢＥＴＷＥＥＮＭｏＡＮＤＨＺＳＭ┐５ＩＮＭｏ／ＨＺＳＭ┐５ＣＡＴＡＬＹＳＴＳ＊ＸｕＹｉｄｅ１，ＬｉｕＷｅｉ１，ＱｉｕＪｉａｎｑｉｎｇ２，ＹａｎｇＮｉａｎｈｕａ２... 详细信息

２７ＡｌＭＡＳＮＭＲＳＴＵＤＹＯＦＩＮＴＥＲＡＣＴＩＯＮＢＥＴＷＥＥＮＭｏＡＮＤＨＺＳＭ┐５ＩＮＭｏ／ＨＺＳＭ┐５ＣＡＴＡＬＹＳＴＳ＊ＸｕＹｉｄｅ１，ＬｉｕＷｅｉ１，ＱｉｕＪｉａｎｑｉｎｇ２，ＹａｎｇＮｉａｎｈｕａ２，ＧｕｏＸｉｅｘｉａｎ１（１Ｓｔａ...

关键词： Al MAS NMR Molybdenum HZSM 5 Interaction

FIRST SYNTHESIS OF(±)-3-[(5-HYDROXY)HOMOGERANYL]-△~2.BUTENOLIDE

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chinese chemical Letters 1996年第4期7卷 303-304页

作者： Jin QU Wei Dong LI Jing LI Yu Lin LI(state key {2. of APPlied Organic Chemistry and institute of Organic Chemistry, lanzhou University, lanzhou 730000) state key Lab. of Appl. Organ. Chem. Institute of Organic Chemistry Lanzhou University Lanzhou 730000

A new farnesane-based sesquiterpene lactone, 3- [(5-hydroxy) homogeranyl]-△2.butenolide, was synthesized for the first time starting from trans, trans-farnesol through five steps in an overall yield of 6. 4 % as its ... 详细信息

关键词： FIRST BUTENOLIDE

EFFECT OF REDUCTION TEMPERATURE ON ACTIVITY AND SELECTIVITY IN（CO+H2.REACTION OVER Fe3（CO）12.DERIVED CATALYSTS

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Journal of Energy Chemistry 1993年第3期 219-226页

作者： WU Jin-Gang HUANG You-Mei WENG Shan-Zhi ZHAI Wei-Xu state key {2. for Oxo Synthesis and Selective Oxidation lanzhou institute of chemical physics, Academia Sinica lanzhou, Gansu 730000

Iron catalysts supported on γ-Al2.3and zeolite were prepared fromorganic solution of Fe3（CO）12. TPCR （Temperature-programmed Catalytic Re-action） and DRS （Diffuse Reflectance Spectroscopy） were used to monitor thereaction and characterize the catalysts. Fe/γ-Al2.3catalyst reduced at 150℃or 2.0℃ not only has higher activity than that reduced at 450℃, but also pro-duces ethane and ethylene during the （CO + H2. reaction. Fe/zeolite catalystreduced at 2.0℃ displays higher activity than that reduced at 450℃, it alsoproduces ethylene, ethane and propane. DRS results suggest that Fe-Fe bondsexist on the catalysts activated under mild conditions.

关键词： Fe DRS CO+H2.REACTION OVER Fe3 DERIVED CATALYSTS EFFECT OF REDUCTION TEMPERATURE ON ACTIVITY AND SELECTIVITY IN