Amorphous cobalt-inherent silicon oxide catalyst
AssigneeUniversity of Louisiana at Lafayette
InventorsDaniel Dianchen Gang, Qiyu Lian, Mark E. Zappi, William E. Holmes
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Abstract
Claimed herein is a method of applying amorphous Co—SiOx to activate PMS and produce SO4·− due to the formation of Co(II)-Ov, pairs via the substitution of Si by Co. The inherent Co significantly change the electronic structure of O and Si atoms in the Co—SiOx via final state effects and increase the conductivity in terms of more effective electron transfers. The claimed method using Co—SiOx functions as a more effective oxidative catalyst for the faster degradation of pollutants. The simplicity of the synthetic procedures indicates that the conductive Co—SiOx could be used for the activation of PMS and other electrochemical applications on a wider scale.
Claims9
A method for pollutant degradation comprising:
- contacting an amorphous cobalt-doped silicon dioxide catalyst with an aqueous solution, wherein the amorphous cobalt-doped silicon dioxide catalyst has a formula comprising Co—SiOx, wherein x is greater than 2, wherein the cobalt of the amorphous cobalt-doped silicon dioxide catalyst has an oxidation state of greater than 2, wherein the amorphous cobalt-doped silicon dioxide catalyst has an average coordination number for Si of 4 and an average coordination number for Co of 6, and wherein the aqueous solution comprises a pollutant.
A method for activating peroxynomonsulfate by applying an amorphous cobalt-inherent silicon dioxide catalyst.
Dependencies are inferred from the claim text.