Skip to Main Content
 

Global Search Box

 
 
 
 

Files

File List


miami1343189565.pdf (5.51 MB)

ETD Abstract Container

Abstract Header

Electrocatalysis at Metal Nanomaterials

Dai, Lin
http://rave.ohiolink.edu/etdc/view?acc_num=miami1343189565

Abstract Details

2012, Doctor of Philosophy, Miami University, Chemistry and Biochemistry.
Direct liquid fuel cells, such as direct methanol fuel cells and direct formic acid fuel cells, have attracted much attention in the past decades due to the need of clean and efficient power sources. One of the most critical issues in the development of highly efficient fuel cells is to increase the rates of fuel-cell reactions as a commercial product. As a result, the topic of electrocatalysis plays a significant role in the investigations of fuel cell reactions. For methanol oxidation, platinum based nanomaterials are the most important catalysts. For formic acid oxidation, both platinum and palladium based nanomaterials are widely employed as the catalysts. Recently, shape-control of the nanoparticles has become an imperative task due to the fact that most of the reactions in fuel cells are sensitive to the surface structure of the catalysts. Though numerous studies have been conducted in past to elucidate the catalytic activity on the nanomaterials with different shapes, the results are inconclusive. Herein, systematic comparison of catalytic activity toward methanol and formic acid oxidation on shape-controlled cubic platinum-based alloy nanoparticles with different alloy element are reported in this dissertation. Methanol and formic acid oxidation reactions on spherical and cubic Pt-Cu nanoparticles are also studied. Cu-Pd nanoparticles are synthesized through galvanic redox reactions to provide significantly higher and much more stable formic acid oxidation activities. Interparticle distance effect is investigated on two dimensional nanoparticle array electrodes with controlled particle size, which is ideal model system for exploring the interparticle distance effects on the voltammetric behavior and reaction mechanisms.
Shouzhong Zou (Advisor)
Andre Sommer (Committee Chair)
Neil Danielson (Committee Member)
Hong Wang (Committee Member)
Shashi Lalvani (Committee Member)
131 p.
Chemistry
electrocatalysis; metal nanoparticles; methanol; formic acid; fuel cell

Recommended Citations

Citations

  • Dai, L. (2012). Electrocatalysis at Metal Nanomaterials [Doctoral dissertation, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1343189565

    APA Style (7th edition)

  • Dai, Lin. Electrocatalysis at Metal Nanomaterials. 2012. Miami University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1343189565.

    MLA Style (8th edition)

  • Dai, Lin. "Electrocatalysis at Metal Nanomaterials." Doctoral dissertation, Miami University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1343189565

    Chicago Manual of Style (17th edition)

miami1343189565
462
© 2012, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.