Dan Goia

Dan Goia CAMP Distinguished Professor Chemistry & Biomolecular Science 317 CAMP Clarkson University PO Box 5814 Potsdam, NY 13699-5814 Phone: 315-268-4411 E-mail: goiadanv@clarkson.edu Web site: http://www.clarkson.edu/goia

Educational Background
Ph.D. Chemistry, Clarkson University, 1998
M.S. Chemistry, University of Cluj, Romania, 1980
B.S. Chemistry, University of Cluj, Romania, 1979

Research Interests
Our research is focused mainly on the synthesis, characterization, and modification of highly dispersed uniform micrometer, submicrometer, and nanometer size metallic particles with well controlled size, morphology, internal structure, composition, and surface properties. While our efforts are primarily focused on the development of chemical precipitation processes capable of yielding high performance materials for existing and emerging applications, we also conduct the basic research needed to understand the mechanisms responsible for the formation of uniform metallic particles in solutions. Regarding the first aspect, we have successfully developed many novel precipitation methods for economically generating highly dispersed metallic particles of Cu, Ni, Co, Bi, Ag, Au, Pd, Pt, and their alloys for applications in electronics, energy conversion and storage (PEM and SO fuel cells), medicine and biology, emissions control, sensors, and metallurgy. At the same time, our experimental and modeling work on spherical gold and silver particles has contributed to the understanding of the formation mechanism of large uniform colloids in homogeneous solutions by aggregation of nanosize precursors and has resulted in a model that is now widely accepted by the scientific community and is frequently cited in the literature. More recently, under a new grant from NSF we have started to investigate the formation by the same mechanism of uniform anisotropic particles (platelets, rods, ellipsoids, cubes, etc.), a topic of extreme importance for science and technology.

Another rather unique expertise of our group consists of the ability to convert ultrafine uniform metallic particles into metallic platelets/flakes by physical processes. Although under-researched, this interdisciplinary area bordering colloid and surface science, physics, and metallurgy has a significant impact on many applications in defense (obscurant smokes) and electronics. Finally, our knowledge and experience in the preparation and modification of fine metallic particles represents a solid foundation that allows us to do independent research as well as to collaborate effectively with various research groups and companies involved in the development of metallic dispersions and inks for applications in electronics, pigments, catalysis, photonics, coatings, and sensors.

Current Research Project/Grants

• “Development of Dispersed Spherical and Anisotropic particles of Electronically Conductive Metals and Metal Alloys”, sponsored by DuPont Electronic Technologies.
• “Improved Metal Coated Polymer Particles”, sponsored by Conpart AS, Norway.
• “Development and Modification of Compounds for Utilization in Homogeneous and Heterogeneous Chemical Catalysis”, sponsored by Umicore, Inc., Germany.
• “Smart Responsive Nanocomposites for Soldier Protection, sponsored by US Army.
• "Preparation of Large Spherical Non-Aggregated Ni Particles", sponsored by Shocking Technologies.
•  "Development of AG Coated AL Powder", sponsored by Potters Industries, Inc.

Publications & Patents (2008 – Present)
Publications:

"Inkjet Printable Silver Dispersions: Effect of Bi-modal Particle Size Distribution on  Film Formation and Electrical Conductivity", K. Balantrapu, M. McMurran, D.V. Goia, Journal of Materials Research, 25, 5, (2010), 821-827, DOI:10.1557/JMR.2010.0124.

"Method for preparing carbon supported Pt-Ru nanoparticles with controlled internal structure", T. Sau, M. Lopez, D.V. Goia, Chemistry of Materials, 21, 3649-3654, (2009). DOI: 1021/cm9010629.

“Method for preparing dispersed crystalline copper particles for electronic applications”, I. Halaciuga, S. LaPlante, D.V. Goia, Journal of Materials Research, 24, 10 (2009). DOI: 10.1557/JMR.2009.0390.

"Toxicity and Developmental Defects of Different Sizes and Shape Nickel Nanoparticles in Zebra Fish", C. Ispas,, D. Andreescu, A. Patel, D.V. Goia, S. Andreescu, K. Wallace, Environmental Science and Technology, 2009, 43, 6349-6356, 10.1021/es9010543.

“Silver nanoparticles for printable electronics and biological applications”, K. Balantrapu, D.V. Goia, Journal of Material Research, 24, 9 (2009) 2828-2836. DOI: 10.1557/JMR.2009.0336.

“Preparation and stabilization of monodisperse colloidal gold by reduction with aminodextran”, B.J. Morrow, E. Matijevic, D.V. Goia, Journal of Colloid and Interface Science, 335 (2009) 62-69. DOI: 10.1016/j.jcis.2009.02.053.

“Determination of Density Distribution in Spheroidal Colloidal Particles by Transmission Electron Microscopy”, I. Sevonkaev, I. Halaciuga, D.V. Goia, Egon Matijevic', Colloids and Surfaces A: Physiochemical and Engineering Aspects (2009). DOI:10.1016/j.colsurfa.2009.05.013.

“A simple preparative route to highly stable dispersions of silver nanoparticles”, A. Jitianu, D. Andreescu, D. V. Goia, Journal of Nanoscience and Nanotechnology, 9, (2009) 1891-1896. DOI: 10.1166/jnn.2009.429.

“Synthesis of silver colloids: experiment and computational model “, I. Halaciuga, D.T. Robb, V. Privman and D.V. Goia:.in Proc. Conf. ICQNM 2009 - IEEE Comp. Soc. Conf. Publ. Serv., Los Alamitos, California, (2009) 141-146. DOI: 10.1109/ICQNM.2009.7.

“Computational Model for the Formation of Uniform Silver Spheres by Aggregation of Nanosize Precursors”, D.T. Robb, I. Halaciuga, V. Privman, D.V. Goia, Journal of Chemical Physics, 129, (2008), Online article # 184705, DOI: 10.1063/1.3009625.

“Preparation of Silver Spheres by Aggregation of Nanosize Subunits, I. Halaciuga, D.V. Goia, Journal of Materials Research, 23, 6 (2008) 1776-1784. DOI: 10.1557/jmr.2008.0219.

"Formation of Cubic Particles of Neighborite (NaMgF3)", I. Sevonkaev, D.V. Goia, E. Matijevi?, Journal of Colloid and Interface Science, 317 (2008) 130-136. DOI: 10.1016/j.jcis.2007.09.036.

Patents:

• ‘Design of materials and inkjet formulation in the manufacturing of inkjet printable silver dispersions', D.V. Goia, K. Balantrapu, M. McMurran, US Patent Application #61/272,358, September 17, 2009.
• 'Core/shell-type catalyst particles and methods for their preparation', Lopez, M., Lennartz, M., Goia, D.V., Becker, C., Chevalliot, S., EP Application #07802927.9-1215, April 9, 2009.
• 'Method for producing dispersed, crystalline, stable to oxidation copper particles', Goia, D.V., Halaciuga, I., LaPlante, S.C., Docket # EL0860, March 2009.
• 'Preparation of silver spheres by the reduction of silver polyamine complexes', Goia, D.V., Halaciuga, I., US 2009/0071292 A1, March 19, 2009.
• 'Method for preparing dispersions of precious metal nanoparticles and for isolating such nanoparticles from said dispersions', Goia, D. V., Morrow, B. J., Matijevi?, E., Balantrapu, K. Farrell, B.P., PCT request submitted to US Patent Office January 09, 2009.

Presentations (2007- Present)

• "New strategies in developing Pt-based electrocatalysts for PEM fuel cells", Umicore Central Research Laboratories, Olean, Belgium, May 26, 2010.

• "Materials for silicon solar cells metallization", 2010 Annual CAMP Technical Meeting, Canandaigua, NY, May 20, 2010.

• "Novel Ag particles for photovoltaic applications", DuPont Electronic Technologies, Research Triangle Park, NJ, May 11, 2010.

• "Highly dispersed uniform metallic particles in microelectronics", 2009 Electronics Packaging Symposium, General Electric, Schenectady, NY, July 29, 2009.
• "Silver and silver/palladium platelets for electronic applications", Metalor Corporate Headquarters, Neuchâtel, Switzerland, July 18, 2008, Dan V. Goia, Brendan P. Farrell.
• “Uniform metallic particles: Preparation, Mechanisms of formation, and Applications, Umicore, Hanau, Germany, May 29 2008.
• "Preparation and applications of highly dispersed uniform metallic particles”, DuPont, Research Triangle Park, April 24, 2007.
• "Synthesis and applications of uniform metallic particles", Cabot Corporation, Billerica, MA, February 7, 2007.
• "Synthesis of uniform metallic particles', Sumitomo Co., Tokyo, Japan, February 1, 2007.

Facilities

• Jeol JEM 2010 High Resolution Scanning Transmission Electron Microscope
• Jeol JSM 7400F High Resolution Field Emission Scanning Electron Microscope
• Bruker D8 X-Ray Diffractometer
• Malvern Mastersizer 2000s Laser Diffraction Particle Size Analyzer
• Brookhaven ZetaPlus Particle Size and Zeta Potential Analyzer
• Perkin Elmer Pyris 1 Thermogravimetric Analyzer
• TA Instruments TMA Q400 Thermomechanical Analyzer
• Quantachrome NOVA 1200e BET Surface Area and Pore Analyzer
• Perkin Elmer Lambda 35 UV-Vis Spectrophotometer
• Dimatix Inkjet Printer DMP-2831
• Ambios Technology XP-2 Surface Profilometer

Research Associates

• Corina Goia
• Ionel Halaciuga
• Angshuman Pal
• Igor Sevonkaev

Student Information

Graduate Students

• Sylas LaPlante
• Lu Lu

Undergraduate Students

• Russell Davis
    

 Exchange Students

• Tina Kogovsĕk, University of Ljubljana, Slovenia
     

Recent Graduates

• Ionel Halaciuga, Ph.D., July 2009, Research Associate, Clarkson University, Potsdam, NY.
• Benjamin J. Morrow, M.Sc., April 2009, Research Associate, Ames-Goldsmith Corporation, Glens Falls, NY.