Journal article
Adsorption and photo-Fenton catalytic degradation of organic dyes over crystalline LaFeO3-doped porous silica
RSC Advances, Vol.8(63), pp.36181-36190
2018
Abstract
LaFeO3 (LFO)-doped mesoporous silica (HPS) (HPS-xLFO with theoretical LFO/silica molar ratio x = 0.075, 0.15, 0.3) was successfully prepared via impregnation of metal ions into the porous silica HPS-0LFO support and subsequent calcination. The characterization studies suggest that increasing the doping of LFO, which exhibited a particle size of ∼10–15 nm, in the silica support led to a reduction in surface area and bandgap of the resulting catalyst. The use of HPS-0.15LFO yielded a superior removal rate (98.9%) of Rhodamine B (RhB), thanks to the effective dark adsorption and visible light-induced photo-Fenton degradation, both of which were greater than those of pure LFO crystals. This enhancement could be explained by the unique properties of the mesoporous silica support. In particular, the wide-opening mesopores created a large surface area to dope LFO as active sites and minimize diffusion of RhB into pores during the photo-Fenton reaction. The photo-Fenton catalytic degradation of RhB could reach 98.6% within 90 min exposure to visible light irradiation under optimized conditions: RhB concentration = 10 mg L−1, catalyst dosage = 1 g L−1, pH = 6 and H2O2 = 15 mM. Moreover, the recycle and reuse test proved the good stability and repetitive use of HPS-0.15LFO for high performance RhB removal.
Details
- Title
- Adsorption and photo-Fenton catalytic degradation of organic dyes over crystalline LaFeO3-doped porous silica
- Authors/Creators
- T.T.N. Phan (Author/Creator)A.N. Nikoloski (Author/Creator)P.A. Bahri (Author/Creator)D. Li (Author/Creator)
- Publication Details
- RSC Advances, Vol.8(63), pp.36181-36190
- Publisher
- Royal Society of Chemistry
- Identifiers
- 991005540425407891
- Copyright
- © 2018 Royal Society of Chemistry
- Murdoch Affiliation
- School of Engineering and Information Technology
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
87 File views/ downloads
32 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Citation topics
- 2 Chemistry
- 2.90 Water Treatment
- 2.90.313 Advanced Oxidation
- Web Of Science research areas
- Chemistry, Multidisciplinary
- ESI research areas
- Chemistry