Files in this item

FilesDescriptionFormat

application/pdf

application/pdfMahle_Thomas.pdf (2Mb)
(no description provided)PDF

Description

Title:Metallic and bimetallic catalysts for electrochemical reduction of problematic aqueous anions
Author(s):Mahle, Thomas
Advisor(s):Gewirth, Andrew A.
Department / Program:Chemistry
Discipline:Chemistry
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):Metallic
Bimetallic
Catalysts
Catalyst
Catalysis
Electrochemical Reduction
Aqueous Anions
Nitrate
Nitrite
Nitrous Oxide
Nitric Oxide
Nitrogen
Dinitrogen
Electrocatalysis
Electrocatalyst
Electrocatalysts
carbon supported
substrate
carbon black
activated carbon
wire
cathode
cathodic
catalytic reduction
reduction catalysis
water
purification
water purification
blue baby
Abstract:Metallic and bimetallic systems are investigated voltammetrically as possible catalysts for the electrochemical reduction of nitrate. Iindium and palladium are the most thoroughly examined metals in this work, but nickel, tin, platinum, thallium, lead, and gallium are also incorporated into the systems investigated. Indium metal is found to perform an 8-electron reduction of nitrate at pH 1 with an onset of -300 mV vs. Ag/AgCl. In-modified Pd wire is also found to exhibit reduction at -300 mV and carbon-supported Pd/In, and the Pd/In/Au electrode were both found to catalyze nitrate reduction at an onset of approximately -200 mV vs. Ag/AgCl in a perchloric acid solution of pH 1. The high onset potentials in these systems are greater than 0 V RHE and therefore represent the fact that these systems could function as catalysts for hydrogenation of nitrate. Of the systems studied they also have the highest activity toward nitrate and did not show signs of degradation, and therefore show the greatest promise in terms of being developed into viable electrocatalysts for nitrate reduction.
Issue Date:2012-05-22
URI:http://hdl.handle.net/2142/31221
Rights Information:© Thomas Kirk Mahle
Date Available in IDEALS:2012-05-22
Date Deposited:2012-05


This item appears in the following Collection(s)

Item Statistics

  • Total Downloads: 288
  • Downloads this Month: 11
  • Downloads Today: 0