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Table 3 First-order rate constants of pure Co₃O₄ nanoparticles and Co₃O₄/ZnO heterostructures

From: Effect of Zinc Acetate Concentration on Optimization of Photocatalytic Activity of p-Co₃O₄/n-ZnO Heterostructures

Sample	methyl orange	Co₃O₄	Co₃O₄/ZnO-5	Co₃O₄/ZnO-15	Co₃O₄/ZnO-25	Co₃O₄/ZnO-35	Co₃O₄/ZnO-45	Co₃O₄/ZnO-55
K (h⁻¹)	0.00157	0.00245	0.01004	0.01697	0.01999	0.03054	0.02248	0.01432

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