In this study, we have adopted a one-step hydrothermal route to synthesize an interesting type of Bi 2 O 2 CO 3 hierarchical nanotubes self-assembled from ordered nanosheets. The effects of reaction time on the morphological and structural evolution, light absorption properties, photoelectrochemical performance, and photocatalytic performance of the prepared hierarchical nanotubes were investigated. Among the products synthesized at different reaction times, the 3-hour-derived Bi 2 O 2 CO 3 hierarchical nanotubes were identified to possess the highest photocatalytic performance. To promote the photocatalytic application of the as-synthesized Bi 2 O 2 CO 3 hierarchical nanotubes, their performance was systematically evaluated via the photodegradation of various organic pollutants ( e.g. , methyl orange (MO), rhodamine B (RhB), methylene blue (MB), ciprofloxacin (CIP), sulfamethoxazole (SMX) and tetracycline hydrochloride (TC)) and the photoreduction of Cr(VI) under simulated-sunlight irradiation. Furthermore, their photocatalytic performance was also evaluated by purifying simulated industrial wastewater ( i.e. , a MO/RhB/MB mixed solution) at different pH values and containing different inorganic anions. Based on the experimental data and density functional theory (DFT) calculations, the involved photocatalytic mechanism was discussed.
Keyphrases
- visible light
- density functional theory
- reduced graphene oxide
- highly efficient
- molecular dynamics
- blood pressure
- pseudomonas aeruginosa
- heavy metals
- radiation therapy
- high resolution
- cystic fibrosis
- mass spectrometry
- big data
- sensitive detection
- quantum dots
- sewage sludge
- machine learning
- atomic force microscopy
- anaerobic digestion
- municipal solid waste
- oxide nanoparticles