Understanding Interparticle Aggregative Coalescence and Growth for the Control of Size, Shape, Composition and Surface Properties of Nanoparticles
EMSL Project ID
42327
Abstract
This Science Theme proposal seeks the use of instrumentation at the Environmental Molecular Sciences Laboratory user-facility to investigate the role of interparticle aggregative coalescence and growth in the control of size, shape, composition, phase and surface properties of metal, alloy and metal oxide nanoparticles, a critical concept in synthesis and processing nanoscale materials for developing advanced fuel cell catalysts and chemical/biological sensing interfaces. The proposed project focuses on one of the outstanding problems in the field of nanostructured and nanoengineered functional materials: the control of size, shape, composition, phase and surface properties. In contrast to size and shape evolution traditionally investigated under the concept of 'Ostwald ripening', the proposed approach involves controlled interparticle coalescence and aggregation processes for the better control of size, shape, composition, phase and surface properties. The establishment of this new nanoscale processing strategy will have a profound impact to the exploration of nanostructured and nanoengineered materials in a wide range of applications including fuel cell catalysis and chemical/bio sensing, which has been the focal areas of the PI research projects funded currently by two NSF-supported projects. The requested use of EMSL's facilities including XPS and HRTEM would enable us the capability to perform a detailed characterization of the nanoparticles in terms of size, shape, composition, phase, and surface properties.
Project Details
Project type
Exploratory Research
Start Date
2010-10-06
End Date
2011-10-09
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
Role of Metal Coordination Structures in Enhancement of Electrocatalytic Activity of Ternary Nanoalloys for Oxygen Reduction Reaction
Wanjala BN, B Fang, R Loukrakpam, Y Chen, MH Engelhard, J Luo, J Yin, L Yang, S Shan, and CJ Zhong. 2012. "Role of Metal Coordination Structures in Enhancement of Electrocatalytic Activity of Ternary Nanoalloys for Oxygen Reduction Reaction." ACS Catalysis 2(5):795-806. doi:10.1021/cs300080k
Harnessing molecule–solid duality of nanoclusters/nanoparticles for nanoscale control of size, shape and alloying
Yin J, P Hu, BN Wanjala, O Malis, and CJ Zhong. 2011. "Harnessing Molecule–solid Duality of Nanoclusters/Nanoparticles for Nanoscale Control of Size, Shape and Alloying." Chemical Communications 47(35):9885-9887. doi:10.1039/C1CC13634H
Chromium-assisted synthesis of platinum nanocube electrocatalysts
Loukrakpam R, P Chang, J Luo, B Fang, D Mott, IT Bae, HR Naslund, MH Engelhard, and CJ Zhong. 2010. "Chromium-Assisted Synthesis of Platinum Nanocube Electrocatalysts." Chemical Communications 46(38):7184-7186. doi:10.1039/c0cc01379j
Correlation between Atomic Coordination Structure and Enhanced Electrocatalytic Activity for Trimetallic Alloy Catalysts
Wanjala BN, B Fang, J Luo, Y Chen, J Yin, MH Engelhard, R Loukrakpam, and CJ Zhong. 2011. "Correlation between Atomic Coordination Structure and Enhanced Electrocatalytic Activity for Trimetallic Alloy Catalysts." Journal of the American Chemical Society 133(32):12714-12727. doi:10.1021/ja2040464
Core−Shell-Structured Magnetic Ternary Nanocubes
Wang L, X Wang, J Luo, BN Wanjala, CM Wang, N Chernova, MH Engelhard, Y Liu, IT Bae, and CJ Zhong. 2010. "Core-Shell Structured Magnetic Ternary Nanocubes." Journal of the American Chemical Society 132(50):17686-17689. doi:10.1021/ja1091084