Sandia Corporation

Toyota Motor Engineering & Manufacturing North America, Inc.

Toyota Motor Corporation

Other

Sandia Corporation, Operator of Sandia National Laboratories

Craig J Medforth

John A Shelnutt

Yujiang Song

Zhongchun Wang

James E Miller

Wen Li

Tetsuo Kawamura

Yukiyoshi Ueno

Kazuo Kawahara

Eulalia F Pereira

Kathleen E Martin

Tochi Tudor Nwoga

Haorong Wang

John Muldoon

Tetsuo Nagami

Hiroaki Takahashi

Kevin M Smith

Michael A Hickner

Dewey Holten

Songling Jia

Nora Y Nelson

The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in proton exchange membrane fuel cells (PEM-FCs).

Photocatalytic methods for preparation of electrocatalyst materials

A nanostructured molecular unit and method for forming is described where a cationic porphyrin having an ethanolic substituent species and a metal in the porphyrin cavity is combined with an anionic porphyrin having a sulfonate substituent species and a metal in the porphyrin cavity to form by self-assembly a nanostructured molecular unit with a morphology comprising four dendritic elements connected at a central node.

Method for forming cooperative binary ionic solids

Metal nanostructures formed by photocatalytic interfacial synthesis using a porphyrin-stabilized emulsion template and the method for making the nanostructures. Catalyst-seeded emulsion droplets are employed as templates for hollow-nanoshell growth. The hollow metal nanospheres may be formed with or without inclusions of other materials.

Metallic nanoshells on porphyrin-stabilized emulsions

The invention relates to methods of preparing metal particles on a support material, including platinum-containing nanoparticles on a carbon support. Such materials can be used as electrocatalysts, for example as improved electrocatalysts in polymer electrolyte membrane fuel cells (PEM-FCs).

A porphyrin coordination polymer nanostructure comprising a network of pyridyl porphyrin molecules and coordinating metal ions coordinatively bound through the pyridyl groups. In some embodiments, the porphyrins are metalloporphyrins. A variety of nanostructures are formed by the network polymer, including nanospheres, polygonal nanostructures, nanorods, and nanofibers, depending on a variety of factors including coordination metal ion, porphyrin type, metal of the metalloporphyrin, and degree of agitation during nanostructure formation. Reduction of coordinating metal ions may be used to form metal nanoparticles on the coordination polymer nanostructure.

Porphyrin coordination polymer nanospheres and nanorods

Synthesis of metallic nanoshells on porphyrin-stabilized emulsions

Dendritic metal nanostructures made using a surfactant structure template, a metal salt, and electron donor species.

Dendritic metal nanostructures

A nanotagged chemical structure comprising a chemical structure with an associated photocatalyst and a tagging nanoparticle (a nanotag) grown in proximity to the photocatalyst, and a method for making the nanotagged chemical structure. The nanoparticle is grown in proximity to the photocatalyst by using a photocatalytic reduction reaction.

Method of photocatalytic nanotagging

A method for making dendritic metal nanostructures using a surfactant structure template, a metal salt, and electron donor species.

A method for generating hydrogen by photocatalytic decomposition of water using porphyrin nanotube composites. In some embodiments, both hydrogen and oxygen are generated by photocatalytic decomposition of water.

Water-splitting using photocatalytic porphyrin-nanotube composite devices

Heteroporphyrin nanotubes, metal nanostructures, and metal/porphyrin-nanotube composite nanostructures formed using the nanotubes as photocatalysts and structural templates, and the methods for forming the nanotubes and composites.

Growing community of inventors

Winters, CA, United States of America

Craig J Medforth