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← ScienceWhich mechanism causes photocatalytic degradation of pollutants in wastewater treatment?
A)Electron-hole pair generation, oxidation✓
B)Anion scavenging accelerates precipitation
C)Hydrophobic effects promote flocculation
D)Cation intercalation modifies zeolite structure
💡 Explanation
Photocatalytic degradation occurs because electron-hole pair generation in semiconductor photocatalysts leads to redox reactions; dissolved pollutants are oxidized, breaking them down. Therefore, photo-degradation proceeds, rather than simple physical sequestration due electrostatic effects.
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