The Penn State Research Foundation

Shinshu University

Rodolfo Cruz-Silva

Mauricio Terrones

Morinobu Endo

Ana Laura Elias

Nestor Perea-Lopez

Xiaoxing Wang

Yu Lei

Kazunori Fujisawa

Tianyi Zhang

He Liu

Aaron Morelos

Ana Laura Elias Arriaga

Cynthia Guerrero-Bermea

A group of reductive 2D materials (R2D) with extended reactive vacancies and a method for making the R2D with extended reactive vacancies are provided, especially the example of the reductive boron nitride (RBN). To create defects such as vacancies, boron nitride (BN) powders are milled at cryogenic temperatures. Vacancies are produced by milling, and the vacancies can be used to reduce various metal nanostructures on RBN. Due to the thermal stability of the RBN and the enhanced catalytic performance of metal nanostructures, RBN-metals can be used for different catalysts, including electrochemical catalysts and high temperature catalysts.

Reductive boron nitride with extended reactive vacancies for catalytic applications

We report a method of preparation of highly elastic graphene oxide films, and their transformation into graphene oxide fibers and electrically conductive graphene fibers by spinning. Methods typically include: 1) oxidation of graphite to graphene oxide, 2) preparation of graphene oxide slurry with high solid contents and residues of sulfuric acid impurities. 3) preparation of large area films by bar-coating or dropcasting the graphene oxide dispersion and drying at low temperature. 4) spinning the graphene oxide film into a fiber, and 5) thermal or chemical reduction of the graphene oxide fiber into an electrically conductive graphene fiber. The resulting films and fiber have excellent mechanical properties, improved morphology as compared with current graphene oxide fibers, high electrical conductivity upon thermal reduction, and improved field emission properties.

Method for preparing graphene oxide films and fibers

Growing community of inventors

Nagano, Japan

Rodolfo Cruz-Silva