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Journal of Materials Science & Technology 2011年第8期27卷 685-690页

作者： Guangnian Xu xueliang qiao Xiaolin Qiu Jianguo Chen Anhui Provincial Laboratory of Biomimetic Sensing and Detection Technology West Anhui University Liuan 237012 China State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science and Technology Wuhan 430074 China Nanomaterials Research Center Nanchang Institute of Technology Nanchang 330013 China

Nano-silver loaded montmorillonite （Ag-MMT） was prepared by ion-exchange and then a UV-photoreduction two-step approach was applied. The silver content in Ag-MMT determined by Volhard method was about 6.4 wt%. The morphology and structure of as-synthesized Ag-MMT were characterized by scanning electron microscopy （SEM） and X-ray diffraction （XRD）. The results showed that the Ag nanoparticles were spherical and their diameters were about 15-20 nm. Moreover, the structure of MMT did not change. The minimum inhibition concentration （MIC） of Ag-MMT was 100×10-6 and the sterilizing efficiency （SE） of Ag-MMT was approximately 100% against Escherichia coli ATCC 11229 （E. coli. In addition, the slow release property of silver in Ag-MMT was also demonstrated.

关键词： Silver loaded montmorillonite Photoreduction Antibacterial activity Slow release property

Microstructure and properties of indium tin oxide thin films deposited by RF-magnetron sputtering

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Rare Metals 2006年第4期25卷 359-364页

作者： LI Shitao qiao xueliang CHEN Jianguo JIA Fang WU Changle State Key Laboratory of Plastic Forming Simulation and Die ＆ Mould Technology Huazhong University of Science and Technology Wuhan 430074China

Tin-doped indium oxide （ITO） thin films were prepared using conventional radio frequency （RF） planar magnetron sputtering equipped with IR irradiation using a ceramic target of In2O3/SnO2 with a mass ratio of 1：1 at various IR irradiation temperatures T1 （from room temperature to 400℃）. The refractive index, deposited ratio, and resistivity are functions of the sputtering Ar gas pressure. The microstructure of ITO thin films is related to IR T1, the crystalline seeds appear at T1= 300℃, and the films are amorphous at the temperature ranging from 27℃ to 400℃. AFM investigation shows that the roughness value of peak-valley of ITO thin film （Rp-v） and the surface microstructure of rio thin films have a close relation with T1. The IR irradiation results in a widening value of band-gap energy due to Burstein-Moss effect and the maximum visible transmittance shifts toward a shorter wavelength along with a decrease in the film＇s refractive index. The plasma wavelength and the refractive index of ITO thin films are relative to the T1. XPS investigation shows that the photoelectrolytic properties can be deteriorated by the sub-oxides. The deterioration can be decreased by increasing the oxygen flow rote （fo2）, and the mole ratio of Sn/In in the samples reduces with an increase info2.

关键词： indium-tin oxide (ITO) photoelectrolytic properties RF-magnetron sputtering IR irradiation temperature microstructure refractive index

Microstructural evolution in the surface of Ti-10V-2Fe-3Al alloy by solution treatments

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Progress in Natural Science:Materials International 2020年第1期30卷 106-109页

作者： Lichun Qi Xaichao Zhang xueliang qiao Lijun Huang Xu Huang Xinqing Zhao School of Materials Science and Engineering Beihang University Institute of Titanium Alloy Beijing Institute of Aeronautical Materials

By solution treatments in vacuum and in air,the surface region of Ti-10V-2Fe-3Al exhibits different microstructures from the interior region of the *** solution treated in vacuum,the microstructure of the specimen is composed of dominant β phase and a few of α " martensite in surface region,with a large amount of α" martensite and a little of β phase in *** solution treated in air,the specimen is characterized by dominant surficial a phase and interior β *** addition,the lattice parameter evolutions of a and β phases were observed in the surface region of the specimens by solution treatment in *** mechanism for the surface effects is discussed in light of the structural stability and phase evolution in Ti-10V-2Fe-3Al alloy with solution treatments.

关键词： Ti-10V–2Fe–3Al Microstructural evolution X-ray diffraction Solution treatment

EFFECTS　OF　DEPOSITION　PROCESS　ON　PHOSPHORUS　CONTENT　IN　ELECTROLESS　Ni－P　COATINGS

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Acta Metallurgica Sinica(English Letters) 1995年第2期8卷 115-117页

作者： qiao xueliang XU Weihua WU Yiping SUN Peizhen(Huazhong University of Science and Technology.Wuhan.China) Huazhong Univ of Science and Technology Wuhan China

There are many factors that affect the phosphorus content in the electroless Ni-P coatings The effects of the compositions of plating solution,the PH values of plat ing solution and the deposition temperature on the phosphorus content in Ni-P coatings were investigated in this paper It is found that the phosphorus content in Ni-P coatings increases and the deposition rate decreases with decreasing PH values,nickel sulphate NiSO4 content of plating solution and the deposition temperature.

关键词： electroless Ni-P coatings phosphorus deposition rate

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室温制备纳米银醇溶胶

稀有金属材料与工程 2013年第7期42卷 1517-1521页

作者：吴丹王维邱小林乔学亮华中科技大学材料成形与模具国家重点实验室湖北武汉430074 南昌理工学院江西南昌330013

在室温下制备了分散性好、稳定性好、粒径分布均匀的高浓度纳米银醇溶胶。采用透射电子显微镜(TEM)、紫外可见光谱(UV-Vis)对产物的形貌和光学性能进行表征。结果表明,所制备的纳米银为分散均匀的球形粒子,平均粒径为4.8nm。在此反应过... 详细信息

在室温下制备了分散性好、稳定性好、粒径分布均匀的高浓度纳米银醇溶胶。采用透射电子显微镜(TEM)、紫外可见光谱(UV-Vis)对产物的形貌和光学性能进行表征。结果表明,所制备的纳米银为分散均匀的球形粒子,平均粒径为4.8nm。在此反应过程中,聚乙烯吡咯烷酮(PVP)既作保护剂又作还原剂,作为溶剂的乙醇有利于PVP分子链的舒展,增大了PVP分子与Ag+的接触几率,促进了还原反应的快速进行;另一方面,充分舒展的PVP分子能有效抑制银纳米粒子团聚。

关键词：纳米银醇溶胶聚乙烯吡咯烷酮室温制备

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氧流量对铟锡氧化物薄膜光电性能的影响

稀有金属材料与工程 2006年第1期35卷 138-141页

作者：李世涛乔学亮陈建国华中科技大学模具技术国家重点实验室湖北武汉430074

采用射频磁控溅射法,在不同氧流量(0~10sccm)的条件下沉积了铟锡氧化物(In2O3-SnO2)透明导电薄膜。紫外分光光度计测试薄膜的透射率,四点探针测试薄膜的方阻,椭偏仪测试薄膜的复折射率和薄膜厚度,XPS测试ITO薄膜的成分和电子结构。结果... 详细信息

采用射频磁控溅射法,在不同氧流量(0~10sccm)的条件下沉积了铟锡氧化物(In2O3-SnO2)透明导电薄膜。紫外分光光度计测试薄膜的透射率,四点探针测试薄膜的方阻,椭偏仪测试薄膜的复折射率和薄膜厚度,XPS测试ITO薄膜的成分和电子结构。结果表明:薄膜的沉积速率和折射率与氧流量有关,薄膜厚度为60nm,氧流量在9sccm时,透射率超过80%(波长λ=400nm^700nm,包括玻璃基体),退火后透射率、方阻明显改善。XPS分析表明,薄膜中的亚氧化物的存在降低了薄膜的光电性能,控制氧流量可减少亚氧化物。

关键词：磁控溅射铟锡氧化物透明导电薄膜氧流量

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P型透明导电氧化物薄膜的研究

太阳能学报 2006年第10期27卷 990-996页

作者：李世涛乔学亮陈建国华中科技大学材料学院模具技术国家重点实验室武汉430074

p-TCO薄膜可能开辟一个新的应用领域,但其导电率远小于n-TCO薄膜的导电率,成为制约p-n型TCO应用的关键问题之一。该文归纳了p-TCO的种类和晶体结构,讨论了其半导体机制和能带结构。综述了最近p-TCO薄膜的制备技术和研究进展,分析了导电... 详细信息

p-TCO薄膜可能开辟一个新的应用领域,但其导电率远小于n-TCO薄膜的导电率,成为制约p-n型TCO应用的关键问题之一。该文归纳了p-TCO的种类和晶体结构,讨论了其半导体机制和能带结构。综述了最近p-TCO薄膜的制备技术和研究进展,分析了导电机理和跃迁模型。认为应综合考虑掺杂、量子效应与尺寸效应、能带结构和载流子浓度与迁移率,才能解决其电导率低的问题。

关键词： P型透明导薄膜半导体机制能带结构量子效应电导率

Microstructure and properties of indium tin oxide thin films deposited by RF-magnetron sputtering

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北京科技大学学报 2006年第8期28卷 743-743页

Tin-doped indium oxide （ITO） thin films were prepared using conventional radio frequency （RF） planar magnetron sputtering equipped with IR irradiation using a ceramic target of In2O3/SnO2 with a mass ratio of 1∶1 at various IR irradiation temperatures T1 （from room temperature to 400?℃）. The refractive index,deposited ratio,and resistivity are functions of the sputtering Ar gas pressure. The microstructure of ITO thin films is related to IR T1,the crystalline seeds appear at T1=300?℃,and the films are amorphous at the temperature ranging from 27?℃ to 400?℃. AFM investigation shows that the roughness value of peak-valley of ITO thin film （R p-v ） and the surface microstructure of ITO thin films have a close relation with T1. The IR irradiation results in a widening value of band-gap energy due to Burstein-Moss effect and the maximum visible transmittance shifts toward a shorter wavelength along with a decrease in the film’s refractive index. The plasma wavelength and the refractive index of ITO thin films are relative to the T1. XPS investigation shows that the photoelectrolytic properties can be deteriorated by the sub-oxides. The deterioration can be decreased by increasing the oxygen flow rate （fo2）,and the mole ratio of Sn/In in the samples reduces with an increase in fo2.

关键词：铟锡氧化物薄膜微观结构射频磁控管溅射法光电解性能折射率

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银纳米材料的可控合成研究

稀有金属材料与工程 2008年第11期37卷 2059-2064页

作者：张万忠乔学亮陈建国南方医科大学广东广州510515 华中科技大学湖北武汉430074

纳米银的形貌、尺寸和尺寸分布可通过采用不同的合成技术和反应条件来调控。在大量阅读文献的基础上对纳米银的可控合成研究进行评述。结合本课题组在可控合成球形银纳米粒子方面的研究,较系统地讨论了纳米银的一些主要制备方法,包括化... 详细信息

纳米银的形貌、尺寸和尺寸分布可通过采用不同的合成技术和反应条件来调控。在大量阅读文献的基础上对纳米银的可控合成研究进行评述。结合本课题组在可控合成球形银纳米粒子方面的研究,较系统地讨论了纳米银的一些主要制备方法,包括化学还原法、微乳液法、模板法、电化学法、光诱导法、微波辅助还原法、超声波辅助还原法、辐射还原法等等,分析了纳米银制备过程中存在的不足,展望了纳米银合成研究的发展趋势。

关键词：金属银可控合成纳米粒子纳米结构

纳米银的合成与表征——三种微乳体系的比较研究

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稀有金属材料与工程 2009年第7期38卷 1254-1258页

作者：张万忠乔学亮陈建国南方医科大学广东广州510515 华中科技大学湖北武汉430074

利用SDS-环己烷-异辛醇-水、AOT-环己烷-水和AOT-十二烷-水等3种微乳体系分别制备纳米银溶胶,利用紫外-可见光谱和透射电镜对形成粒子进行表征,进而探讨纳米银粒子的形成机制。3种体系中纳米银的共振吸收强度依次减小,半峰宽依次增大,... 详细信息

利用SDS-环己烷-异辛醇-水、AOT-环己烷-水和AOT-十二烷-水等3种微乳体系分别制备纳米银溶胶,利用紫外-可见光谱和透射电镜对形成粒子进行表征,进而探讨纳米银粒子的形成机制。3种体系中纳米银的共振吸收强度依次减小,半峰宽依次增大,最大吸收波长分别为400,428和435nm;形成粒子均为球形结构,无团聚现象,但粒子的平均粒度和粒度分布存在明显的差异;3种体系中形成粒子的平均粒度分别为6.46,4.03和1.78nm。微乳体系中球形胶束为纳米银的形成提供一种独特的微观环境,但由于碰撞导致团聚,微乳液中形成粒子的粒度与形貌和胶束的尺寸和形状并不完全一致,实际形成的纳米银粒子具有一定的粒度分布宽度。

关键词：纳米银粒子微乳液可控合成生长机制