公开(公告)号：US5840193A

公开(公告)日：1998-11-24

申请号：US686422

申请日：1996-07-26

申请人： Neil G. Smart ,  Chien M. Wai ,  Yuehe Lin ,  Yak Hwa Kwang

发明人： Neil G. Smart ,  Chien M. Wai ,  Yuehe Lin ,  Yak Hwa Kwang

IPC分类号： B09B3/00 ,  C22B3/16 ,  C22B3/20 ,  C22B3/26 ,  C22B3/38 ,  C22B7/00 ,  B01D11/00 ,  B01D11/02

CPC分类号： C22B3/0005 ,  C22B3/0043 ,  C22B7/006 ,  Y02P10/234 ,  Y10S210/909 ,  Y10S210/912

摘要： Methods for extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical CO.sub.2, and a chelating agent are described. The chelating agent forms a chelate with the species, the chelate being soluble in the fluid to allow removal of the species from the material. In preferred embodiments the extraction solvent is supercritical CO.sub.2 and the chelating agent comprises an organophosphorous chelating agent, particularly sulfur-containing organophosphorous chelating agents, including mixtures of chelating agents. Examples of chelating agents include monothiophosphinic acid, di-thiophosphinic acid, phosphine sulfite, phosphorothioic acid, and mixtures thereof. The method provides an environmentally benign process for removing metal and metalloids from industrial waste solutions, particularly acidic solutions. Both the chelate and the supercritical fluid can be regenerated and the contaminant species recovered to provide an economic, efficient process.

摘要翻译： 描述了通过将材料暴露于流体溶剂，特别是超临界CO 2和螯合剂从固体或液体材料中提取准金属和金属物质的方法。 螯合剂与物质形成螯合物，螯合物可溶于流体以允许物质从材料中除去。 在优选的实施方案中，提取溶剂是超临界CO 2，螯合剂包括有机磷螯合剂，特别是含硫的有机磷螯合剂，包括螯合剂的混合物。 螯合剂的实例包括一硫代次膦酸，二硫代次膦酸，亚硫酸氢钠，硫代磷酸及其混合物。 该方法提供了一种从工业废物溶液，特别是酸性溶液中去除金属和准金属的环境友好方法。 螯合物和超临界流体都可以再生并且回收污染物质以提供经济，有效的方法。

公开(公告)号：US07122106B2

公开(公告)日：2006-10-17

申请号：US10154935

申请日：2002-05-23

申请人： Yuehe Lin ,  Liang Liang ,  Jun Liu

发明人： Yuehe Lin ,  Liang Liang ,  Jun Liu

IPC分类号： C25B1/00 ,  C25B3/00 ,  C25D15/00 ,  C25D5/48 ,  C25D11/00

CPC分类号： B82Y30/00 ,  C09D5/4476 ,  C25D9/00

摘要： A method for producing an array of oriented nanofibers that involves forming a solution that includes at least one electroactive species. An electrode substrate is brought into contact with the solution. A current density is applied to the electrode substrate that includes at least a first step of applying a first substantially constant current density for a first time period and a second step of applying a second substantially constant current density for a second time period. The first and second time periods are of sufficient duration to electrically deposit on the electrode substrate an array of oriented nanofibers produced from the electroactive species. Also disclosed are films that include arrays or networks of oriented nanofibers and a method for amperometrically detecting or measuring at least one analyte in a sample.

公开(公告)号：US06831274B2

公开(公告)日：2004-12-14

申请号：US10091833

申请日：2002-03-05

申请人： Richard D. Smith ,  Keqi Tang ,  Yuehe Lin

发明人： Richard D. Smith ,  Keqi Tang ,  Yuehe Lin

IPC分类号： B01D5944

CPC分类号： H01J49/165 ,  H01J49/0018 ,  H01J49/107

摘要： A method and apparatus that utilizes two or more emitters simultaneously to form an electrospray of a sample that is then directed into a mass spectrometer, thereby increasing the total ion current introduced into an electrospray ionization mass spectrometer, given a liquid flow rate of a sample. The method and apparatus are most conveniently constructed as an array of spray emitters fabricated on a single chip, however, the present invention encompasses any apparatus wherein two or more emitters are simultaneously utilized to form an electrospray of a sample that is then directed into a mass spectrometer.

摘要翻译： 同时使用两个或更多个发射体形成样品的电喷雾的方法和装置，该样品的电喷雾随后被引导到质谱仪中，从而在给定样品的液体流速的情况下增加引入电喷雾离子化质谱仪中的总离子电流。 该方法和装置最方便地构造为在单个芯片上制造的喷射发射体的阵列，然而，本发明包括其中两个或更多个发射体同时用于形成样品的电喷雾的任何装置，然后将其引导到质量 光谱仪

公开(公告)号：US6132491A

公开(公告)日：2000-10-17

申请号：US137563

申请日：1998-08-20

申请人： Chien M. Wai ,  Fred H. Hunt ,  Neil G. Smart ,  Yuehe Lin

发明人： Chien M. Wai ,  Fred H. Hunt ,  Neil G. Smart ,  Yuehe Lin

IPC分类号： C22B3/00 ,  B22F9/24 ,  B22F9/26 ,  B22F9/30 ,  C01B13/18 ,  C01G19/02 ,  C01G23/053 ,  C01G53/04 ,  C22B3/22 ,  C22B3/26 ,  C23C16/44 ,  C23C16/448 ,  C21B15/00 ,  C22B15/00

CPC分类号： B22F9/26 ,  B22F9/24 ,  B22F9/30 ,  B82Y30/00 ,  C01B13/18 ,  C01G19/02 ,  C01G23/0536 ,  C01G53/04 ,  C22B3/0021 ,  C22B3/22 ,  C23C16/4485 ,  B22F2999/00 ,  C01P2004/03 ,  C01P2004/10 ,  C01P2004/54 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  Y02P10/234 ,  Y02P20/544

摘要： A method for dissociating metal-ligand complexes in a supercritical fluid by treating the metal-ligand complex with heat and/or reducing or oxidizing agents is described. Once the metal-ligand complex is dissociated, the resulting metal and/or metal oxide form fine particles of substantially uniform size. In preferred embodiments, the solvent is supercritical carbon dioxide and the ligand is a .beta.-diketone such as hexafluoroacetylacetone or dibutyldiacetate. In other preferred embodiments, the metals in the metal-ligand complex are copper, silver, gold, tungsten, titanium, tantalum, tin, or mixtures thereof. In preferred embodiments, the reducing agent is hydrogen. The method provides an efficient process for dissociating metal-ligand complexes and produces easily-collected metal particles free from hydrocarbon solvent impurities. The ligand and the supercritical fluid can be regenerated to provide an economic, efficient process.

摘要翻译： 描述了通过用热和/或还原或氧化剂处理金属 - 配体络合物来解离超临界流体中的金属 - 配体络合物的方法。 一旦金属 - 配体络合物解离，所得到的金属和/或金属氧化物就形成基本上均匀尺寸的细颗粒。 在优选的实施方案中，溶剂是超临界二氧化碳，配体是β-二酮如六氟乙酰丙酮或二丁基二乙酸酯。 在其它优选实施方案中，金属 - 配体络合物中的金属是铜，银，金，钨，钛，钽，锡或它们的混合物。 在优选的实施方案中，还原剂是氢。 该方法提供了解离金属 - 配体络合物的有效方法，并产生容易收集的不含烃溶剂杂质的金属颗粒。 可以再生配体和超临界流体以提供经济，有效的方法。

公开(公告)号：US5792357A

公开(公告)日：1998-08-11

申请号：US692894

申请日：1996-07-26

申请人： Chien M. Wai ,  Neil G. Smart ,  Yuehe Lin

发明人： Chien M. Wai ,  Neil G. Smart ,  Yuehe Lin

IPC分类号： C22B3/16 ,  B01D11/02 ,  B01D11/04 ,  C22B3/02 ,  C22B3/26 ,  C22B59/00 ,  C22B60/02 ,  B01D11/00

CPC分类号： C22B59/00 ,  B01D11/0203 ,  B01D11/0407 ,  C22B3/0005 ,  C22B3/002 ,  C22B3/02 ,  C22B60/02 ,  Y02P10/234 ,  Y10S210/912

摘要： A method of extracting metal and metalloid species from a solid or liquid substrate using a supercritical fluid solvent containing one or more chelating agents followed by back-extracting the metal and metalloid species from the metal and metalloid chelates formed thereby. The back-extraction acidic solution is performed utilizing an acidic solution. Upon sufficient exposure of the metal and metalloid chelates to the acidic solution, the metal and metalloid species are released from the chelates into the acid solution, while the chelating agent remains in the supercritical fluid solvent. The chelating agent is thereby regenerated and the metal and metalloid species recovered.

摘要翻译： 一种使用含有一种或多种螯合剂的超临界流体溶剂从固体或液体底物中提取金属和准金属物质的方法，随后从由此形成的金属和类金属螯合物中反萃取金属和准金属物质。 使用酸性溶液进行反萃取的酸性溶液。 当金属和准金属螯合物充分暴露于酸性溶液时，金属和准金属物质从螯合物中释放到酸性溶液中，而螯合剂保留在超临界流体溶剂中。 从而再生螯合剂，回收金属和准金属物质。

公开(公告)号：US5770085A

公开(公告)日：1998-06-23

申请号：US458759

申请日：1995-06-02

申请人： Chien M. Wai ,  Neil G. Smart ,  Yuehe Lin

发明人： Chien M. Wai ,  Neil G. Smart ,  Yuehe Lin

IPC分类号： B01D11/02 ,  B01D11/04 ,  B08B7/00 ,  B09C1/02 ,  G21F9/12 ,  B01D11/00

CPC分类号： G21F9/125 ,  B01D11/0203 ,  B01D11/0407 ,  B08B7/0021 ,  B09C1/02 ,  Y10S210/912

摘要： A method of extracting metalloid and metal species from a solid or liquid material by exposing the material to a fluid solvent, particularly supercritical carbon dioxide, containing a chelating agent is described. The chelating agent forms chelates that are soluble in the fluid to allow removal of the species from the material. In preferred embodiments, the extraction solvent is supercritical carbon dioxide and the chelating agent comprises a trialkyl phosphate, a triaryl phosphate, a trialkylphosphine oxide, a triarylphosphine oxide, or mixtures thereof. The method provides an environmentally benign process for removing contaminants from industrial waste. The method is particularly useful for extracting actinides from acidic solutions, and the process can be aided by the addition of nitrate salts. The chelate and supercritical fluid can be regenerated, and the contaminant species recovered, to provide an economic, efficient process.

摘要翻译： 描述了通过将材料暴露于含有螯合剂的流体溶剂，特别是超临界二氧化碳，从固体或液体材料中提取准金属和金属物质的方法。 螯合剂形成可溶于流体中的螯合物，以允许物质从材料中除去。 在优选的实施方案中，提取溶剂是超临界二氧化碳，螯合剂包括磷酸三烷基酯，磷酸三芳基酯，三烷基氧化膦，三芳基氧化膦或其混合物。 该方法为从工业废物中除去污染物提供了环境友好的过程。 该方法特别适用于从酸性溶液中萃取锕系元素，该方法可以通过加入硝酸盐来辅助。 可以再生螯合物和超临界流体，回收污染物质，以提供经济，有效的方法。

公开(公告)号：US07452452B2

公开(公告)日：2008-11-18

申请号：US11017480

申请日：2004-12-20

申请人： Zhifeng Ren ,  Yuehe Lin ,  Wassana Yantasee ,  Guodong Liu ,  Fang Lu ,  Yi Tu

发明人： Zhifeng Ren ,  Yuehe Lin ,  Wassana Yantasee ,  Guodong Liu ,  Fang Lu ,  Yi Tu

IPC分类号： G01N27/30 ,  G01N27/327

CPC分类号： B82Y30/00 ,  B82Y10/00 ,  B82Y40/00 ,  C01B32/162 ,  C01B2202/08 ,  C01B2202/34 ,  C01B2202/36 ,  D01F9/1271 ,  D01F9/1272 ,  D01F9/1275 ,  D01F9/1276 ,  H01L51/0048 ,  H01L51/0052 ,  Y10S977/747 ,  Y10S977/92 ,  Y10S977/957

摘要： The present invention relates to microelectode arrays (MEAs), and more particularly to carbon nanotube nanoelectrode arrays (CNT-NEAs) for chemical and biological sensing, and methods of use. A nanoelectrode array includes a carbon nanotube material comprising an array of substantially linear carbon nanotubes each having a proximal end and a distal end, the proximal end of the carbon nanotubes are attached to a catalyst substrate material so as to form the array with a pre-determined site density, wherein the carbon nanotubes are aligned with respect to one another within the array; an electrically insulating layer on the surface of the carbon nanotube material, whereby the distal end of the carbon nanotubes extend beyond the electrically insulating layer; a second adhesive electrically insulating layer on the surface of the electrically insulating layer, whereby the distal end of the carbon nanotubes extend beyond the second adhesive electrically insulating layer; and a metal wire attached to the catalyst substrate material.

摘要翻译： 本发明涉及微电极阵列（MEA），更具体地涉及用于化学和生物学感测的碳纳米管纳米电极阵列（CNT-NEAs）和使用方法。 纳米电极阵列包括碳纳米管材料，其包括各自具有近端和远端的基本上线性的碳纳米管阵列，碳纳米管的近端附着到催化剂衬底材料上， 确定的位置密度，其中所述碳纳米管在所述阵列内相对于彼此对准; 在碳纳米管材料的表面上的电绝缘层，由此碳纳米管的远端延伸超过电绝缘层; 在所述电绝缘层的表面上的第二粘合电绝缘层，由此所述碳纳米管的远端延伸超过所述第二粘合电绝缘层; 以及连接到催化剂基板材料的金属线。

公开(公告)号：US20080220244A1

公开(公告)日：2008-09-11

申请号：US10585173

申请日：2005-01-21

申请人： Chien M Wai ,  Xiang-Rong Ye ,  Yuehe Lin

发明人： Chien M Wai ,  Xiang-Rong Ye ,  Yuehe Lin

IPC分类号： B01J23/00 ,  B32B5/16 ,  B05D7/22

CPC分类号： H01M4/9008 ,  B01J21/185 ,  B01J23/40 ,  B82Y10/00 ,  B82Y30/00 ,  H01M4/923 ,  Y10T428/256

摘要： Embodiments of nanostructures and nanocomposites and embodiments of methods for forming and modifying these nanostructures and nanocomposites are disclosed. The methods can include transporting a metal, metallic compound or precursor to a surface of a nanostructure substrate in a carrier while the carrier is in supercritical fluid form. Embodiments of the disclosed methods can be used to form catalytic structures, such as catalytic structures including nanostructure supports and catalytic metallic nanoparticles attached to the nanostructure supports. These catalytic structures are useful for catalyzing reactions in fuel cell applications, such as oxygen reduction and methanol oxidation reactions. Some of the disclosed nanostructures and nanocomposites include carbon nanotubes.

摘要翻译： 公开了纳米结构和纳米复合材料的实施方案以及用于形成和改性这些纳米结构和纳米复合材料的方法的实施方案。 所述方法可以包括在载体处于超临界流体形式的同时在载体中将金属，金属化合物或前体输送到纳米结构基材的表面。 所公开的方法的实施方案可以用于形成催化结构，例如包括纳米结构载体和附着于纳米结构载体的催化金属纳米颗粒的催化结构。 这些催化结构可用于催化燃料电池应用中的反应，例如氧还原和甲醇氧化反应。 一些公开的纳米结构和纳米复合材料包括碳纳米管。

公开(公告)号：US20050230270A1

公开(公告)日：2005-10-20

申请号：US11017480

申请日：2004-12-20

申请人： Zhifeng Ren ,  Yuehe Lin ,  Wassana Yantasee ,  Guodong Liu ,  Fang Lu

发明人： Zhifeng Ren ,  Yuehe Lin ,  Wassana Yantasee ,  Guodong Liu ,  Fang Lu

IPC分类号： C01B31/02 ,  D01F9/127 ,  H01L51/00 ,  H01L51/30 ,  G01N27/26

CPC分类号： B82Y30/00 ,  B82Y10/00 ,  B82Y40/00 ,  C01B32/162 ,  C01B2202/08 ,  C01B2202/34 ,  C01B2202/36 ,  D01F9/1271 ,  D01F9/1272 ,  D01F9/1275 ,  D01F9/1276 ,  H01L51/0048 ,  H01L51/0052 ,  Y10S977/747 ,  Y10S977/92 ,  Y10S977/957

摘要： The present invention relates to microelectode arrays (MEAs), and more particularly to carbon nanotube nanoelectrode arrays (CNT-NEAs) for chemical and biological sensing, and methods of use. A nanoelectrode array includes a carbon nanotube material comprising an array of substantially linear carbon nanotubes each having a proximal end and a distal end, the proximal end of the carbon nanotubes are attached to a catalyst substrate material so as to form the array with a pre-determined site density, wherein the carbon nanotubes are aligned with respect to one another within the array; an electrically insulating layer on the surface of the carbon nanotube material, whereby the distal end of the carbon nanotubes extend beyond the electrically insulating layer; a second adhesive electrically insulating layer on the surface of the electrically insulating layer, whereby the distal end of the carbon nanotubes extend beyond the second adhesive electrically insulating layer; and a metal wire attached to the catalyst substrate material.

摘要翻译： 本发明涉及微电极阵列（MEA），更具体地涉及用于化学和生物学感测的碳纳米管纳米电极阵列（CNT-NEAs）和使用方法。 纳米电极阵列包括碳纳米管材料，其包括各自具有近端和远端的基本上线性的碳纳米管阵列，碳纳米管的近端附着到催化剂衬底材料上， 确定的位置密度，其中所述碳纳米管在所述阵列内相对于彼此对准; 在碳纳米管材料的表面上的电绝缘层，由此碳纳米管的远端延伸超过电绝缘层; 在所述电绝缘层的表面上的第二粘合电绝缘层，由此所述碳纳米管的远端延伸超过所述第二粘合电绝缘层; 以及连接到催化剂基板材料的金属线。

公开(公告)号：US20090288962A1

公开(公告)日：2009-11-26

申请号：US12427431

申请日：2009-04-21

申请人： Wassana Yantasee ,  Glen E. Fryxell ,  Raymond S. Addleman ,  Yuehe Lin ,  Charles Timchalk

发明人： Wassana Yantasee ,  Glen E. Fryxell ,  Raymond S. Addleman ,  Yuehe Lin ,  Charles Timchalk

IPC分类号： G01N27/30 ,  B05D5/12 ,  G01N27/26

CPC分类号： G01N27/42 ,  G01N33/1813 ,  G01N33/493 ,  G01N2610/00

摘要： A mercury-free, electrochemical sensor is described that includes a self-assembled monolayer on a mesoporous support (SAMMS) composite and a fluoropolymer component that is deposited on a measurement surface. The SAMMS component provides outstanding metal preconcentration. The fluoropolymer component acts as an antifouling binder. The sensor can detect various metals at a low detection level in the presence of fouling agents and without sample pretreatment. The sensor is also able to detect mixtures of metals simultaneously with excellent single and inter-electrode reproducibility. Service lifetimes are excellent.

摘要翻译： 描述了一种无汞电化学传感器，其包括介孔载体（SAMMS）复合材料上的自组装单层和沉积在测量表面上的含氟聚合物组分。 SAMMS组件提供卓越的金属预浓缩。 氟聚合物组分用作防污粘合剂。 传感器可以在存在污染物的情况下检测低检测水平的各种金属，并且无需样品预处理。 传感器还能够同时检测金属的混合物，具有优异的单电极和电极间再现性。 使用寿命很好。