Abstract
This work studied the photocatalytic performance of ZnO nanorods and WO3/ZnO nanorods in bromocresol green (BCG). The ZnO nanorods were pre-synthesized via solution precipitation method. Subsequently, the nanorods were kept in sodium tungstate solution for the deposition of WO3. The present of WO3 was confirmed by XRD and EDX analysis. ZnO nanorods (64.34%) showed a higher photodegradation efficiency of BCG removal than WO3/ZnO nanorods (60.03%) under 75 minutes of UV irradiation. This could be attributed to the formation of WO3/ZnO shell-core nanostructure which limited the generation of holes and hydroxyl free radicals that needed for the photodegradation of BCG dyes.
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