DOE/BES/NSET annual report on growth of metal and semiconductor nanostructures using localized photocatalysts. Page: 3 of 18
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Printed October 2003
DOE/BES/NSET Annual Report on Growth of Metal and Semiconductor
Nanostructures Using Localized Photocatalysts
John A. Shelnutt, Yujiang Song, Yi Yang, Craig J. Medforth, Eulalia Pereira, Anup K. Singh,
Huifang Xu, Yingbing Jiang, C. Jeffrey Brinker, Frank van Swol, Zhongchun Wang, Yan Qiu,
Sivakumar R. Challa, Raid E. Haddad, Richard K. Watt, and Eric Nuttall
Biomolecular Materials and Interfaces Department
Sandia National Laboratories
Albuquerque, NM 87185-1349
Advanced Materials Laboratory
University of New Mexico
Albuquerque, NM 87106
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
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Haddad, Raid Edward; Brinker, C. Jeffrey; Shelnutt, John Allen; Yang, Yi; Nuttall, H. Eric; Watt, Richard K. et al. DOE/BES/NSET annual report on growth of metal and semiconductor nanostructures using localized photocatalysts., report, October 1, 2003; United States. (digital.library.unt.edu/ark:/67531/metadc886326/m1/3/: accessed October 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.