DOE/BES/NSET annual report on growth of metal and semiconductor nanostructures using localized photocatalysts. Metadata

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Title

  • Main Title DOE/BES/NSET annual report on growth of metal and semiconductor nanostructures using localized photocatalysts.

Creator

  • Author: Haddad, Raid Edward
    Creator Type: Personal
  • Author: Brinker, C. Jeffrey
    Creator Type: Personal
  • Author: Shelnutt, John Allen
    Creator Type: Personal
  • Author: Yang, Yi
    Creator Type: Personal
  • Author: Nuttall, H. Eric
    Creator Type: Personal
  • Author: Watt, Richard K.
    Creator Type: Personal
  • Author: Singl, Anup K.
    Creator Type: Personal
  • Author: Challa, Sivakumar R.
    Creator Type: Personal
  • Author: Wang, Zhongchun
    Creator Type: Personal
  • Author: van Swol, Frank B.
    Creator Type: Personal
  • Author: Pereira, Eulalia
    Creator Type: Personal
  • Author: Qiu, Yan
    Creator Type: Personal
  • Author: Jiang, Ying-Bing
    Creator Type: Personal
  • Author: Xu, Huifang
    Creator Type: Personal
  • Author: Medforth, Craig J.
    Creator Type: Personal
  • Author: Song, Yujiang
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization

Publisher

  • Name: Sandia National Laboratories
    Place of Publication: United States

Date

  • Creation: 2003-10-01

Language

  • English

Description

  • Content Description: Our overall goal is to understand and develop a novel light-driven approach to the controlled growth of unique metal and semiconductor nanostructures and nanomaterials. In this photochemical process, bio-inspired porphyrin-based photocatalysts reduce metal salts in aqueous solutions at ambient temperatures to provide metal nucleation and growth centers. Photocatalyst molecules are pre-positioned at the nanoscale to control the location and morphology of the metal nanostructures grown. Self-assembly, chemical confinement, and molecular templating are some of the methods used for nanoscale positioning of the photocatalyst molecules. When exposed to light, the photocatalyst molecule repeatedly reduces metal ions from solution, leading to deposition and the synthesis of the new nanostructures and nanostructured materials. Studies of the photocatalytic growth process and the resulting nanostructures address a number of fundamental biological, chemical, and environmental issues and draw on the combined nanoscience characterization and multi-scale simulation capabilities of the new DOE Center for Integrated Nanotechnologies, the University of New Mexico, and Sandia National Laboratories. Our main goals are to elucidate the processes involved in the photocatalytic growth of metal nanomaterials and provide the scientific basis for controlled synthesis. The nanomaterials resulting from these studies have applications in nanoelectronics, photonics, sensors, catalysis, and micromechanical systems. The proposed nanoscience concentrates on three thematic research areas: (1) the creation of nanoscale structures for realizing novel phenomena and quantum control, (2) understanding nanoscale processes in the environment, and (3) the development and use of multi-scale, multi-phenomena theory and simulation. Our goals for FY03 have been to understand the role of photocatalysis in the synthesis of dendritic platinum nanostructures grown from aqueous surfactant solutions under ambient conditions. The research is expected to lead to highly nanoengineered materials for catalysis mediated by platinum, palladium, and potentially other catalytically important metals. The nanostructures made also have potential applications in nanoelectronics, nanophotonics, and nanomagnetic systems. We also expect to develop a fundamental understanding of the uses and limitations of biomimetic photocatalysis as a means of producing metal and semiconductor nanostructures and nanomaterials. The work has already led to a relationship with InfraSUR LLC, a small business that is developing our photocatalytic metal reduction processes for environmental remediation. This work also contributes to science education at a predominantly Hispanic and Native American university.
  • Physical Description: 16 p.

Subject

  • STI Subject Categories: 77 Nanoscience And Nanotechnology
  • Keyword: Nanostructures
  • STI Subject Categories: 37 Inorganic, Organic, Physical And Analytical Chemistry
  • Keyword: Photochemical Reactions
  • Keyword: Metals
  • Keyword: Chemical Preparation
  • Keyword: Photocatalysis
  • Keyword: Semiconductor Materials
  • Keyword: Performance

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Report No.: SAND2003-3703
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/918305
  • Office of Scientific & Technical Information Report Number: 918305
  • Archival Resource Key: ark:/67531/metadc886326