公开(公告)号：US09919927B2

公开(公告)日：2018-03-20

申请号：US14888301

申请日：2014-05-02

Applicant: William Marsh Rice University

Inventor： James M. Tour ,  Ruquan Ye ,  Changsheng Xiang ,  Jian Lin ,  Zhiwei Peng ,  Gabriel Ceriotti

IPC: C01B31/02 ,  C01B31/04 ,  C01B32/182 ,  C01B32/184 ,  C01B32/192 ,  C01B32/194 ,  B82Y40/00

CPC classification number: C01B32/182 ,  B82Y40/00 ,  C01B32/184 ,  C01B32/192 ,  C01B32/194 ,  C01B2204/02 ,  C01B2204/04 ,  C01B2204/32 ,  Y10S977/774

Abstract: In some embodiments, the present disclosure pertains to methods of making graphene quantum dots from a carbon source (e.g., coal, coke, and combinations thereof) by exposing the carbon source to an oxidant. In some embodiments, the methods of the present disclosure further comprise a step of separating the formed graphene quantum dots from the oxidant. In some embodiments, the methods of the present disclosure further comprise a step of reducing the formed graphene quantum dots. In some embodiments, the methods of the present disclosure further comprise a step of enhancing a quantum yield of the graphene quantum dots. In further embodiments, the methods of the present disclosure also include a step of controlling the diameter of the formed graphene quantum dots by selecting the carbon source. In some embodiments, the formed graphene quantum dots comprise oxygen addends or amorphous carbon addends on their edges.

公开(公告)号：US20160060122A1

公开(公告)日：2016-03-03

申请号：US14888301

申请日：2014-05-02

Applicant: WILLIAM MARSH RICE UNIVERSITY

Inventor： James M. Tour ,  Ruquan Ye ,  Changsheng Xiang ,  Jian Lin ,  Zhiwei Peng

IPC: C01B31/04

CPC classification number: C01B32/182 ,  B82Y40/00 ,  C01B32/184 ,  C01B32/192 ,  C01B32/194 ,  C01B2204/02 ,  C01B2204/04 ,  C01B2204/32 ,  Y10S977/774

Abstract: In some embodiments, the present disclosure pertains to methods of making graphene quantum dots from a carbon source (e.g., coal, coke, and combinations thereof) by exposing the carbon source to an oxidant. In some embodiments, the methods of the present disclosure further comprise a step of separating the formed graphene quantum dots from the oxidant. In some embodiments, the methods of the present disclosure further comprise a step of reducing the formed graphene quantum dots. In some embodiments, the methods of the present disclosure further comprise a step of enhancing a quantum yield of the graphene quantum dots. In further embodiments, the methods of the present disclosure also include a step of controlling the diameter of the formed graphene quantum dots by selecting the carbon source. In some embodiments, the formed graphene quantum dots comprise oxygen addends or amorphous carbon addends on their edges.

Abstract translation: 在一些实施方案中，本公开涉及通过将碳源暴露于氧化剂从碳源（例如煤，焦炭及其组合）制备石墨烯量子点的方法。 在一些实施方案中，本公开的方法进一步包括从形成的石墨烯量子点与氧化剂分离的步骤。 在一些实施方案中，本公开的方法还包括减少形成的石墨烯量子点的步骤。 在一些实施方案中，本发明的方法还包括提高石墨烯量子点的量子产率的步骤。 在另外的实施方案中，本公开的方法还包括通过选择碳源来控制形成的石墨烯量子点的直径的步骤。 在一些实施方案中，所形成的石墨烯量子点在其边缘上包括氧加成物或无定形碳添加物。

公开(公告)号：US20160237237A1

公开(公告)日：2016-08-18

申请号：US15024560

申请日：2014-09-30

Applicant: WILLIAM MARSH RICE UNIVERSITY

Inventor： James M. Tour ,  Changsheng Xiang

IPC: C08K3/04 ,  C08L75/04

CPC classification number: C08K3/04 ,  C08K3/043 ,  C08K9/04 ,  C08K2201/008 ,  C08K2201/011 ,  C08L75/04

Abstract: In some embodiments, the present disclosure pertains to gas barrier composites that include a polymer matrix and graphene nanoribbons dispersed in the polymer matrix. The polymer matrix can include a phase-separated block copolymer with a hard phase domain and a soft phase domain. Like-wise, the functionalized graphene nanoribbons can include edge-functionalized graphene nanoribbons with concentrations that range from about 0.1% by weight to about 5% by weight of the gas barrier composites. In some embodiments, the present disclosure pertains to methods of making gas barrier composites by dispersing graphene nanoribbons in a polymer matrix. In some embodiments, the dispersing lowers the permeability of a gas through the gas barrier composite and causes phase separation of block copolymers in the polymer matrix. In some embodiments, the dispersion of graphene nanoribbons in the polymer matrix lowers the gas effective diffusivity of the gas barrier composite by three orders of magnitude.

Abstract translation: 在一些实施方案中，本公开涉及包含聚合物基质和分散在聚合物基质中的石墨烯纳米带的气体阻隔复合物。 聚合物基质可包括具有硬相结构域和软相结构域的相分离嵌段共聚物。 类似地，官能化石墨烯纳米带可以包括边界官能化的石墨烯纳米带，其浓度范围为阻气复合材料的约0.1重量％至约5重量％。 在一些实施方案中，本公开涉及通过将石墨烯纳米带分散在聚合物基质中制备阻气复合材料的方法。 在一些实施方案中，分散降低气体通过气体阻隔复合材料的渗透性，并导致聚合物基质中嵌段共聚物的相分离。 在一些实施方案中，石墨烯纳米带在聚合物基质中的分散将气体阻隔复合材料的气体有效扩散率降低三个数量级。