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Table 1 Photo degradation rate constants and linear regression coefficients of different catalysts from equation − ln(C/C₀) = kt.

From: Fabrication of Z-scheme Ag₃PO₄/TiO₂ Heterostructures for Enhancing Visible Photocatalytic Activity

	K (min⁻¹)	Regression equation	R ²
TiO₂400/Ag₃PO₄	0.02286	− ln(C/C₀) = 0.02286x + 0.21496	R² = 0.68755
TiO₂500/Ag₃PO₄	0.01513	− ln(C/C₀) = 0.01513x + 0.15984	R² = 0.753
Ag₃PO₄	0.01148	− ln(C/C₀) = 0.01148x + 0.1079	R² = 0.71128
TiO₂300/Ag₃PO₄	0.00525	− ln(C/C₀) = 0.00525x + 0.06354	R² = 0.82635
TiO₂400	0.00345	− ln(C/C₀) = 0.00345x + 0.0383	R² = 0.78461

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