Correlation between the Photocatalytic Degradability of PAHs over Pt/TiO₂-SiO₂ in Water and Their Quantitative Molecular Structure

Table 2

Pseudo-first-order regression equation, correlation coefficient, rate constant, half-life time, and the total removal efficiency of photolysis and photocatalysis of PYR, BaP, and DahA (initial concentration: 5 × 10⁻⁸ M).

Treatment	PAHs	Regression equation	(min)	(min^−1)		Removal efficiency (%)
Photolysis	NP	y = 0.0054x + 0.0259	128.4	0.0054	0.9905	46.6
	FL	y = 0.0035x + 0.1646	198.0	0.0035	0.7332	41.5
	PHE	y = 0.0046x + 0.0258	150.7	0.0046	0.9802	41.9
	PYR	y = 0.0043x + 0.0278	161.2	0.0043	0.9833	37.8
	BaP	y = 0.0398x + 0.5683	17.4	0.0398	0.958	99.0
	DahA	y = 0.0112x + 0.1094	61.9	0.0112	0.9767	71.8
Photocatalysis	NP	y = 0.0006x − 0.0111	1155.2	0.0006	0.9093	4.8
	FL	y = 0.0021x + 0.1047	330.1	0.0021	0.6774	24.7
	PHE	y = 0.0038x − 0.0211	182.4	0.0038	0.9803	34.5
	PYR	y = 0.0155x + 0.0731	44.7	0.0155	0.9878	81.4
	BaP	y = 0.0452x + 1.433	15.3	0.0452	0.8443	99.7
	DahA	y = 0.0192x + 0.1435	36.1	0.0192	0.9878	88.6