公开(公告)号：US20140154165A1

公开(公告)日：2014-06-05

申请号：US13980715

申请日：2012-03-27

申请人： Wensheng Yang ,  Jie Sun ,  Haimei Liu ,  Xu Chen ,  Xue Duan

发明人： Wensheng Yang ,  Jie Sun ,  Haimei Liu ,  Xu Chen ,  Xue Duan

IPC分类号： C01B31/04

CPC分类号： C01B31/0446 ,  C01B32/192 ,  C01B32/22 ,  Y10S977/789

摘要： The present invention relates to a method for preparing graphene using the two-dimensional confined space between the layers of inorganic layered materials. Such method comprises the following steps: mix a soluble salt of a divalent metal ion M2+, a soluble salt of a trivalent metal ion M′3+, a soluble salt of a chain alkyl anion A− and a carbon source molecule C and dissolve them in deionized and CO2-eliminated water to prepare a mixed salt solution; mix the mixed salt solution with an alkali solution under nitrogen protection and subject them to reaction and crystallization under nitrogen, and filter the suspension obtained thereafter and wash the filter cake with deionized water until the pH of the filtrate is 7 to 7.5, and then dry the filter cake to obtain layered double hydroxides with an intercalated structure; under an inert atmosphere or a reducing atmosphere, calcinate the layered double hydroxides with an intercalated structure to provide a calcinated product; add the calcinated product into a hydrochloric acid solution for ultrasonic treatment, and separate the solution by centrifugation and wash the precipitate obtained by centrifugation with deionized water until the pH of the filtrate is 6.5 to 7 to obtain the graphene.

摘要翻译： 本发明涉及使用无机层状材料层之间的二维密闭空间来制备石墨烯的方法。 该方法包括以下步骤：将二价金属离子M2 +的可溶性盐，三价金属离子M'3 +的可溶性盐，链烷基阴离子A的可溶性盐和碳源分子C混合并溶解 在去离子水和二氧化碳消除的水中制备混合盐溶液; 在氮气保护下将混合盐溶液与碱溶液混合，并在氮气下进行反应和结晶，过滤后得到的悬浮液，用去离子水洗涤滤饼直到滤液的pH为7至7.5，然后干燥 滤饼得到具有插层结构的层状双氢氧化物; 在惰性气氛或还原气氛下，以层间结构煅烧层状双氢氧化物，得到煅烧产物; 将煅烧后的产物加入到盐酸溶液中进行超声波处理，离心分离溶液，用去离子水离心洗涤沉淀，直到滤液的pH值达到6.5〜7，得到石墨烯。

公开(公告)号：US08906337B2

公开(公告)日：2014-12-09

申请号：US13980715

申请日：2012-03-27

申请人： Wensheng Yang ,  Jie Sun ,  Haimei Liu ,  Xu Chen ,  Xue Duan

发明人： Wensheng Yang ,  Jie Sun ,  Haimei Liu ,  Xu Chen ,  Xue Duan

IPC分类号： C01B31/04

CPC分类号： C01B31/0446 ,  C01B32/192 ,  C01B32/22 ,  Y10S977/789

摘要： The present invention relates to a method for preparing graphene using the two-dimensional confined space between the layers of inorganic layered materials. Such method comprises the following steps: mix a soluble salt of a divalent metal ion M2+, a soluble salt of a trivalent metal ion M′3+, a soluble salt of a chain alkyl anion A− and a carbon source molecule C and dissolve them in deionized and CO2-eliminated water to prepare a mixed salt solution; mix the mixed salt solution with an alkali solution under nitrogen protection and subject them to reaction and crystallization under nitrogen, and filter the suspension obtained thereafter and wash the filter cake with deionized water until the pH of the filtrate is 7 to 7.5, and then dry the filter cake to obtain layered double hydroxides with an intercalated structure; under an inert atmosphere or a reducing atmosphere, calcinate the layered double hydroxides with an intercalated structure to provide a calcinated product; add the calcinated product into a hydrochloric acid solution for ultrasonic treatment, and separate the solution by centrifugation and wash the precipitate obtained by centrifugation with deionized water until the pH of the filtrate is 6.5 to 7 to obtain the graphene.

摘要翻译： 本发明涉及使用无机层状材料层之间的二维密闭空间来制备石墨烯的方法。 该方法包括以下步骤：将二价金属离子M2 +的可溶性盐，三价金属离子M'3 +的可溶性盐，链烷基阴离子A的可溶性盐和碳源分子C混合并溶解 在去离子水和二氧化碳消除的水中制备混合盐溶液; 在氮气保护下将混合盐溶液与碱溶液混合，并在氮气下进行反应和结晶，过滤后得到的悬浮液，用去离子水洗涤滤饼直到滤液的pH为7至7.5，然后干燥 滤饼得到具有插层结构的层状双氢氧化物; 在惰性气氛或还原气氛下，以层间结构煅烧层状双氢氧化物，得到煅烧产物; 将煅烧后的产物加入到盐酸溶液中进行超声波处理，离心分离溶液，用去离子水离心洗涤沉淀，直到滤液的pH值达到6.5〜7，得到石墨烯。

公开(公告)号：US08834982B2

公开(公告)日：2014-09-16

申请号：US13994487

申请日：2011-12-07

申请人： Wensheng Yang ,  Jie Sun ,  Xu Chen ,  Haimei Liu

发明人： Wensheng Yang ,  Jie Sun ,  Xu Chen ,  Haimei Liu

IPC分类号： B32B3/02 ,  C01B31/02 ,  B82Y40/00

CPC分类号： C01B31/0293 ,  B82Y30/00 ,  B82Y40/00 ,  C01B31/0206 ,  C01B32/15 ,  Y10T428/21

摘要： The invention relates to a carbon nanoring and a method for preparing the same. The carbon nanoring according to the present invention is composed of monolayered or multilayered coaxial carbon rings, wherein the carbon ring has a structure similar to that of a closed ring system formed by graphite sheet being rolled, and each of an axial dimension and a radial dimension of the carbon nanoring is nanoscale with the axial dimension being smaller than the radial dimension. The invention further provides a method for preparing the above carbon nanoring including calcinating in an inert atmosphere or a reducing atmosphere a layered double hydroxides obtained by intercalating a long-chain alkyl anion and a carbon source molecule, growing a carbon nanoring within a confined region between layers under the catalysis of the metal element in layers, and removing the metal and the metal oxide by dissolving in an acid to obtain the carbon nanoring. By using this method, the carbon nanoring can be effectively controlled in terms of the axial dimension, the radial dimension, and the number of layers of the carbon ring thereof. The carbon nanoring provided by the present invention has the nano-ring shaped structure and the excellent properties of carbon materials, as well as more edge carbons and dangling bonds, and thus it has broad application prospects in such field as nanodevices, energy storage and sensing.

摘要翻译： 本发明涉及一种碳纳米管及其制备方法。 根据本发明的碳纳米管由单层或多层同轴碳环组成，其中碳环的结构类似于由滚动的石墨片形成的闭环系统，其轴向尺寸和径向尺寸 的碳纳米尺寸是纳米级的，其轴向尺寸小于径向尺寸。 本发明还提供了一种制备上述碳纳米管的方法，包括在惰性气氛或还原气氛中煅烧通过插入长链烷基阴离子和碳源分子获得的层状双氢氧化物，在碳纳米管之间的限制区内生长碳纳米 在层内催化金属元素层，并通过溶解在酸中去除金属和金属氧化物以获得碳纳米。 通过使用该方法，可以根据其碳环的轴向尺寸，径向尺寸和层数有效地控制碳纳米化。 本发明提供的碳纳米管具有纳米环形结构和碳材料的优异性能，以及更多的边缘碳和悬挂键，因此在纳米器件，能量存储和感测领域具有广泛的应用前景 。

公开(公告)号：US20130273294A1

公开(公告)日：2013-10-17

申请号：US13994487

申请日：2011-12-07

申请人： Wensheng Yang ,  Jie Sun ,  Xu Chen ,  Haimei Liu

发明人： Wensheng Yang ,  Jie Sun ,  Xu Chen ,  Haimei Liu

IPC分类号： C01B31/02

CPC分类号： C01B31/0293 ,  B82Y30/00 ,  B82Y40/00 ,  C01B31/0206 ,  C01B32/15 ,  Y10T428/21

摘要： The invention relates to a carbon nanoring and a method for preparing the same. The carbon nanoring according to the present invention is composed of monolayered or multilayered coaxial carbon rings, wherein the carbon ring has a structure similar to that of a closed ring system formed by graphite sheet being rolled, and each of an axial dimension and a radial dimension of the carbon nanoring is nanoscale with the axial dimension being smaller than the radial dimension. The invention further provides a method for preparing the above carbon nanoring including calcinating in an inert atmosphere or a reducing atmosphere a layered double hydroxides obtained by intercalating a long-chain alkyl anion and a carbon source molecule, growing a carbon nanoring within a confined region between layers under the catalysis of the metal element in layers, and removing the metal and the metal oxide by dissolving in an acid to obtain the carbon nanoring. By using this method, the carbon nanoring can be effectively controlled in terms of the axial dimension, the radial dimension, and the number of layers of the carbon ring thereof. The carbon nanoring provided by the present invention has the nano-ring shaped structure and the excellent properties of carbon materials, as well as more edge carbons and dangling bonds, and thus it has broad application prospects in such field as nanodevices, energy storage and sensing.

摘要翻译： 本发明涉及一种碳纳米管及其制备方法。 根据本发明的碳纳米管由单层或多层同轴碳环组成，其中碳环的结构类似于由滚动的石墨片形成的闭环系统，其轴向尺寸和径向尺寸 的碳纳米尺寸是纳米级的，其轴向尺寸小于径向尺寸。 本发明还提供了一种制备上述碳纳米管的方法，包括在惰性气氛或还原气氛中煅烧通过嵌入长链烷基阴离子和碳源分子获得的层状双氢氧化物，在碳纳米管之间的限制区内生长碳纳米 在层内催化金属元素层，并通过溶解在酸中去除金属和金属氧化物以获得碳纳米。 通过使用该方法，可以根据其碳环的轴向尺寸，径向尺寸和层数有效地控制碳纳米化。 本发明提供的碳纳米管具有纳米环形结构和碳材料的优异性能，以及更多的边缘碳和悬挂键，因此在纳米器件，能量存储和感测领域具有广泛的应用前景 。

公开(公告)号：US20080105535A1

公开(公告)日：2008-05-08

申请号：US11792824

申请日：2005-12-13

申请人： Yoshihiro Nakato ,  Haimei Liu ,  Ryuhei Nakamura

发明人： Yoshihiro Nakato ,  Haimei Liu ,  Ryuhei Nakamura

IPC分类号： C01G23/04 ,  C01B13/02 ,  C01G31/02 ,  C01G33/00 ,  C01G29/00 ,  C07B63/00

CPC分类号： C01G31/006 ,  B01J23/002 ,  B01J23/20 ,  B01J23/22 ,  B01J35/004 ,  B01J2523/00 ,  C01B3/042 ,  C01B13/0207 ,  C01G33/006 ,  C01G35/006 ,  C01P2002/72 ,  C01P2002/85 ,  C01P2004/03 ,  C08K3/22 ,  C08K9/02 ,  C09D5/1618 ,  C09D7/62 ,  Y02E60/364 ,  B01J2523/47 ,  B01J2523/54 ,  B01J2523/55 ,  B01J2523/27 ,  B01J2523/57 ,  B01J2523/56

摘要： A new photocatalyst, which is high in visible light response, is great in quantum efficiency, and is more excellent in photocatalytic activity, is provided. A composite metal oxide, prepared combining two photocatalytic systems of TiO2 and BiVO4, including elements of Bi, Ti, and Vi as composition elements, can be a photocatalyst having a high activity under visible light. Particularly, BiTiVO6, which is obtained at a compounding ratio of 1:1, can be a photocatalyst having a remarkably high activity under visible light. Moreover, a composite metal oxide expressed by a general formula BiTiMO6 (in the formula, M represents at least one element selected from a group consisting of V, Nb, and Ta) can be a photocatalyst having a high activity under visible light.

摘要翻译： 具有高可见光响应性的新型光催化剂量子效率高，光催化活性更优异。 将包含Bi，Ti和Vi的元素的两种光催化体系TiO 2和BiVO 4组合的复合金属氧化物可以是光催化剂，其具有 可见光下的高活性。 特别地，以1:1的配混比获得的BiTiVO 6可以是在可见光下具有非常高的活性的光催化剂。 此外，由通式BiTiMO 6（式中，M表示选自V，Nb和Ta中的至少一种元素）表示的复合金属氧化物可以是光催化剂，其具有 可见光下的高活性。