Water oxidation catalyst having low overpotential for oxygen evolution reaction
First Claim
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1. A process for the synthesis of a water oxidation catalyst having composition ZnxCo(3-x)O4, for splitting water into oxygen and hydrogen gases, wherein x is selected from 0, 0.2, 0.4, 0.6, 0.8 and 1.0, the process comprising the steps of:
- a) dissolving cobalt nitrate hexahydrate and zinc nitrate hexahydrate separately in solvent to afford solution of both;
b) adding said both solutions to the solution of glycine in solvent followed by stirring to obtain a uniform solution, wherein the ratio of cobalt plus zinc nitrate or metal nitrate;
glycine is in the range of 1;
0.3 to 1;
0.5; and
c) evaporating the solution of step (b) at temperature in the range of 180 to 220°
C. followed by burning the resulting thick mass to obtain a water oxidation catalyst.
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Abstract
The present invention discloses a water oxidation catalyst having composition ZnxCo(3-x)O4 for splitting water into oxygen and hydrogen gas and a process for the preparation thereof.
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Citations
9 Claims
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1. A process for the synthesis of a water oxidation catalyst having composition ZnxCo(3-x)O4, for splitting water into oxygen and hydrogen gases, wherein x is selected from 0, 0.2, 0.4, 0.6, 0.8 and 1.0, the process comprising the steps of:
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a) dissolving cobalt nitrate hexahydrate and zinc nitrate hexahydrate separately in solvent to afford solution of both; b) adding said both solutions to the solution of glycine in solvent followed by stirring to obtain a uniform solution, wherein the ratio of cobalt plus zinc nitrate or metal nitrate;
glycine is in the range of 1;
0.3 to 1;
0.5; andc) evaporating the solution of step (b) at temperature in the range of 180 to 220°
C. followed by burning the resulting thick mass to obtain a water oxidation catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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