Table 3 The apparent rate constants and half life times for photocatalytic degradation of acid red 37 dye using UV/TiO2, UV/SnO2, UV/TiO2–SnO2 (97:3), UV/TiO2–SnO2 (90:10) and UV/TiO2–SnO2 (80:20).

From: Synthesis and investigation of optical properties and enhancement photocatalytic activity of TiO2–SnO2 semiconductor for degradation of organic compounds

Catalytic system

Catalyst loading (g/L)

kapp (min−1)

t1/2 (min)

UV/TiO2

0.4

2 × 10−4

346.0

UV/SnO2

0.4

28 × 10−4

247.1

UV/TiO2–SnO2 (97:3)

0.4

38 × 10−4

182.1

UV/TiO2–SnO2 (90:10)

0.4

72 × 10−4

96.1

UV/TiO2–SnO2 (80:20)

0.4

35 × 10−4

197.7

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