Synthesis of Reducible Oxide-Supported Nickel Phosphide Catalysts
Research Mentor(s)
Mark Bussell
Description
Nickel phosphides such as Ni3P, Ni12P5, and Ni2P have shown promise as photothermal catalysts for the reverse water-gas shift reaction to reduce CO2 to CO with hydrogen. Reducible metal oxides such as In2O3 and TiO2 have also shown significant photocatalytic activity. While numerous methods exist to synthesize nickel phosphide on metal oxide supports, many of them require conditions that would reduce or otherwise damage the metal oxide support. Three different methods were investigated to produce nickel phosphides on indium oxide without reducing the oxide to metal. These methods were the reduction of nickel hypophosphite-impregnated supports, reduction of a triphenylphosphine-nickel(II) acetylacetonate complex impregnated onto support material, and electroless plating of amorphous nickel-phosphorus on the support followed by impregnation with a phosphorus source and reduction. This presentation discusses the advantages that each method provides, as well as the difficulties that were encountered in each process.
Document Type
Event
Start Date
May 2022
End Date
May 2022
Location
Carver Gym (Bellingham, Wash.)
Department
CSE - Chemistry
Genre/Form
student projects; posters
Type
Image
Rights
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author’s written permission.
Language
English
Format
application/pdf
Synthesis of Reducible Oxide-Supported Nickel Phosphide Catalysts
Carver Gym (Bellingham, Wash.)
Nickel phosphides such as Ni3P, Ni12P5, and Ni2P have shown promise as photothermal catalysts for the reverse water-gas shift reaction to reduce CO2 to CO with hydrogen. Reducible metal oxides such as In2O3 and TiO2 have also shown significant photocatalytic activity. While numerous methods exist to synthesize nickel phosphide on metal oxide supports, many of them require conditions that would reduce or otherwise damage the metal oxide support. Three different methods were investigated to produce nickel phosphides on indium oxide without reducing the oxide to metal. These methods were the reduction of nickel hypophosphite-impregnated supports, reduction of a triphenylphosphine-nickel(II) acetylacetonate complex impregnated onto support material, and electroless plating of amorphous nickel-phosphorus on the support followed by impregnation with a phosphorus source and reduction. This presentation discusses the advantages that each method provides, as well as the difficulties that were encountered in each process.