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公开(公告)号：US20080128284A1
公开(公告)日：2008-06-05
申请号：US11742223
申请日：2007-04-30
IPC分类号： C25D1/04
CPC分类号： G01N27/127 , B82Y30/00 , C25D1/006 , C25D1/04 , C25D5/02 , C25D5/18 , C25D5/48 , C25D9/08 , G01N33/005 , Y10S977/762
摘要： Methods for the preparation of long, dimensionally uniform, metallic nanowires that are removable from the surface on which they are synthesized. The methods include the selective electrodeposition of metal nanowires at step edges present on a stepped surface, such as graphite, from an aqueous solution containing a metal or metal oxide. Where a metal oxide is first deposited, the metal oxide nanowires are reduced via a gas phase reduction at elevated temperatures to metal nanowires. Alternatively, beaded or hybrid nanowires comprising a metal A into which nanoparticles of a metal B have been inserted may be prepared by first electrodepositing nanoparticles of metal B selectively along step edges of a stepped surface, capping these nanoparticles with a molecular layer of an organic ligand, selectively electrodepositing nanowire segments of metal A between nanoparticles of metal B and then heating the surface of the hybrid nanowire under reducing conditions to remove the ligand layer. In all three methods, the nanowires may be removed from the stepped surface by embedding the wires in a polymer film, and then peeling this film containing the embedded wires off of the stepped surface.
摘要翻译： 用于制备长的，尺寸均匀的金属纳米线的方法，其可从它们合成的表面上移除。 所述方法包括在含有金属或金属氧化物的水溶液中，存在于梯级表面（例如石墨）上的台阶边缘处的金属纳米线的选择性电沉积。 在首先沉积金属氧化物的情况下，金属氧化物纳米线通过气相在升高的温度下还原成金属纳米线而被还原。 或者，可以通过首先将金属B的纳米颗粒选择性地沿着台阶表面的台阶边缘电沉积来制备包含金属B的纳米颗粒的串珠或混合纳米线，将这些纳米颗粒用有机配体的分子层封盖 在金属B的纳米颗粒之间选择性地电沉积金属A的纳米线段，然后在还原条件下加热混合纳米线的表面以除去配体层。 在所有三种方法中，通过将线嵌入聚合物膜中，可以从台阶表面去除纳米线，然后将含有嵌入线的膜从台阶表面剥离。
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公开(公告)号：US08070930B2
公开(公告)日：2011-12-06
申请号：US11742223
申请日：2007-04-30
IPC分类号： C25D5/02
CPC分类号： G01N27/127 , B82Y30/00 , C25D1/006 , C25D1/04 , C25D5/02 , C25D5/18 , C25D5/48 , C25D9/08 , G01N33/005 , Y10S977/762
摘要： Methods for the preparation of long, dimensionally uniform, metallic nanowires that are removable from the surface on which they are synthesized. The methods include the selective electrodeposition of metal nanowires at step edges present on a stepped surface, such as graphite, from an aqueous solution containing a metal or metal oxide. Where a metal oxide is first deposited, the metal oxide nanowires are reduced via a gas phase reduction at elevated temperatures to metal nanowires. Alternatively, beaded or hybrid nanowires comprising a metal A into which nanoparticles of a metal B have been inserted may be prepared by first electrodepositing nanoparticles of metal B selectively along step edges of a stepped surface, capping these nanoparticles with a molecular layer of an organic ligand, selectively electrodepositing nanowire segments of metal A between nanoparticles of metal B and then heating the surface of the hybrid nanowire under reducing conditions to remove the ligand layer. In all three methods, the nanowires may be removed from the stepped surface by embedding the wires in a polymer film, and then peeling this film containing the embedded wires off of the stepped surface.
摘要翻译： 用于制备长的，尺寸均匀的金属纳米线的方法，其可从它们合成的表面上移除。 所述方法包括在含有金属或金属氧化物的水溶液中，存在于梯级表面（例如石墨）上的台阶边缘处的金属纳米线的选择性电沉积。 在首先沉积金属氧化物的情况下，金属氧化物纳米线通过气相在升高的温度下还原成金属纳米线而被还原。 或者，可以通过首先将金属B的纳米颗粒选择性地沿着台阶表面的台阶边缘电沉积来制备包含金属B的纳米颗粒的串联或混合纳米线，将这些纳米颗粒用有机配体的分子层 在金属B的纳米颗粒之间选择性地电沉积金属A的纳米线段，然后在还原条件下加热混合纳米线的表面以除去配体层。 在所有三种方法中，通过将线嵌入聚合物膜中，可以从台阶表面去除纳米线，然后将含有嵌入线的膜从台阶表面剥离。
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公开(公告)号：US07220346B2
公开(公告)日：2007-05-22
申请号：US10861821
申请日：2004-06-03
IPC分类号： C25D1/04
CPC分类号： G01N27/127 , B82Y30/00 , C25D1/006 , C25D1/04 , C25D5/02 , C25D5/18 , C25D5/48 , C25D9/08 , G01N33/005 , Y10S977/762
摘要： Methods for the preparation of long, dimensionally uniform, metallic nanowires that are removable from the surface on which they are synthesized. The methods include the selective electrodeposition of metal nanowires at step edges present on a stepped surface, such as graphite, from an aqueous solution containing a metal or metal oxide. Where a metal oxide is first deposited, the metal oxide nanowires are reduced via a gas phase reduction at elevated temperatures to metal nanowires. Alternatively, beaded or hybrid nanowires comprising a metal A into which nanoparticles of a metal B have been inserted may be prepared by first electrodepositing nanoparticles of metal B selectively along step edges of a stepped surface, capping these nanoparticles with a molecular layer of an organic ligand, selectivley electrodepositing nanowire segments of metal A between nanoparticles of metal B and then heating the surface of the hybrid nanowire under reducing conditions to remove the ligand layer. In all three methods, the nanowires may be removed from the stepped surface by embedding the wires in a polymer film, and then peeling this film containing the embedded wires off of the stepped surface.
摘要翻译： 用于制备长的，尺寸均匀的金属纳米线的方法，其可从它们合成的表面上移除。 所述方法包括在含有金属或金属氧化物的水溶液中，存在于梯级表面（例如石墨）上的台阶边缘处的金属纳米线的选择性电沉积。 在首先沉积金属氧化物的情况下，金属氧化物纳米线通过气相在升高的温度下还原成金属纳米线而被还原。 或者，可以通过首先将金属B的纳米颗粒选择性地沿着台阶表面的台阶边缘电沉积来制备包含金属B的纳米颗粒的串珠或混合纳米线，将这些纳米颗粒用有机配体的分子层封盖 ，选择性地在金属B的纳米颗粒之间电沉积金属A的纳米线区段，然后在还原条件下加热混合纳米线的表面以除去配体层。 在所有三种方法中，通过将线嵌入聚合物膜中，可以从台阶表面去除纳米线，然后将含有嵌入线的膜从台阶表面剥离。
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公开(公告)号：US06843902B1
公开(公告)日：2005-01-18
申请号：US09976990
申请日：2001-10-12
CPC分类号： G01N27/127 , B82Y30/00 , C25D1/006 , C25D1/04 , C25D5/02 , C25D5/18 , C25D5/48 , C25D9/08 , G01N33/005 , Y10S977/762
摘要： Methods for the preparation of long, dimensionally uniform, metallic nanowires that are removable from the surface on which they are synthesized. The methods include the selective electrodeposition of metal nanowires at step edges present on a stepped surface, such as graphite, from an aqueous solution containing a metal or metal oxide. Where a metal oxide is first deposited, the metal oxide nanowires are reduced via a gas phase reduction at elevated temperatures to metal nanowires. Alternatively, beaded or hybrid nanowires comprising a metal A into which nanoparticles of a metal B have been inserted may be prepared by first electrodepositing nanoparticles of metal B selectively along step edges of a stepped surface, capping these nanoparticles with a molecular layer of an organic ligand, selectivley electrodepositing nanowire segments of metal A between nanoparticles of metal B and then heating the surface of the hybrid nanowire under reducing conditions to remove the ligand layer. In all three methods, the nanowires may be removed from the stepped surface by embedding the wires in a polymer film, and then peeling this film containing the embedded wires off of the stepped surface.
摘要翻译： 用于制备长的，尺寸均匀的金属纳米线的方法，其可从它们合成的表面上移除。 所述方法包括在含有金属或金属氧化物的水溶液中，存在于梯级表面（例如石墨）上的台阶边缘处的金属纳米线的选择性电沉积。 在首先沉积金属氧化物的情况下，金属氧化物纳米线通过气相在升高的温度下还原成金属纳米线而被还原。 或者，可以通过首先将金属B的纳米颗粒选择性地沿着台阶表面的台阶边缘电沉积来制备包含金属B的纳米颗粒的串珠或混合纳米线，将这些纳米颗粒用有机配体的分子层封盖 ，选择性地在金属B的纳米颗粒之间电沉积金属A的纳米线区段，然后在还原条件下加热混合纳米线的表面以除去配体层。 在所有三种方法中，通过将线嵌入聚合物膜中，可以从台阶表面去除纳米线，然后将含有嵌入线的膜从台阶表面剥离。
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公开(公告)号：US07628959B2
公开(公告)日：2009-12-08
申请号：US11682827
申请日：2007-03-06
CPC分类号： G01N27/127 , B82Y15/00 , B82Y30/00 , G01N33/005 , G01N33/0063 , Y10S977/70 , Y10S977/708 , Y10S977/72 , Y10S977/762 , Y10S977/773 , Y10S977/784 , Y10T29/49 , Y10T29/49002 , Y10T436/11 , Y10T436/21 , Y10T436/22
摘要： A hydrogen gas sensor and/or switch fabricated from arrays nanowires composed of metal or metal alloys that have stable metal hydride phases. The sensor and/or switch response times make it quite suitable for measuring the concentration of hydrogen in a flowing gas stream. The sensor and/or switch preferably operates by measuring the resistance of several metal nanowires arrayed in parallel in the presence of hydrogen gas. The nanowires preferably comprise gaps or break junctions that can function as a switch that closes in the presence of hydrogen gas. Consequently, the conductivity of the nanowires of the sensor and/or switch increases in the presence of hydrogen.
摘要翻译： 由阵列由金属或金属合金组成的纳米线制成的氢气传感器和/或开关具有稳定的金属氢化物相。 传感器和/或开关响应时间使其非常适合于测量流动气流中的氢浓度。 传感器和/或开关优选地通过测量在氢气存在下并联排列的几种金属纳米线的电阻来操作。 纳米线优选地包括可用作在氢气存在下关闭的开关的间隙或断裂连接点。 因此，传感器和/或开关的纳米线的导电性在氢的存在下增加。
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公开(公告)号：US07186381B2
公开(公告)日：2007-03-06
申请号：US10160926
申请日：2002-05-30
CPC分类号： G01N27/127 , B82Y15/00 , B82Y30/00 , G01N33/005 , G01N33/0063 , Y10S977/70 , Y10S977/708 , Y10S977/72 , Y10S977/762 , Y10S977/773 , Y10S977/784 , Y10T29/49 , Y10T29/49002 , Y10T436/11 , Y10T436/21 , Y10T436/22
摘要： A hydrogen gas sensor and/or switch fabricated from arrays nanowires composed of metal or metal alloys that have stable metal hydride phases. The sensor and/or switch response times make it quite suitable for measuring the concentration of hydrogen in a flowing gas stream. The sensor and/or switch preferably operates by measuring the resistance of several metal nanowires arrayed in parallel in the presence of hydrogen gas. The nanowires preferably comprise gaps or break junctions that can function as a switch that closes in the presence of hydrogen gas. Consequently, the conductivity of the nanowires of the sensor and/or switch increases in the presence of hydrogen
摘要翻译： 由阵列由金属或金属合金组成的纳米线制成的氢气传感器和/或开关具有稳定的金属氢化物相。 传感器和/或开关响应时间使其非常适合于测量流动气流中的氢浓度。 传感器和/或开关优选地通过测量在氢气存在下并联排列的几种金属纳米线的电阻来操作。 纳米线优选地包括可用作在氢气存在下关闭的开关的间隙或断裂连接点。 因此，传感器和/或开关的纳米线的导电性在氢的存在下增加
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