Markedly enhancing the visible-light photocatalytic activity of LaFeO3 by post-treatment in molten salt

Yang, Jun; Zhong, Huiqiong; Li, Ming; Zhang, Lizhen; Zhang, Yuanming

doi:10.1007/s11144-009-0025-1

Cited by 29 publications

(12 citation statements)

References 17 publications

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“…Iron centered catalysts prepared using combinatorial routes have been particularly popular [ 115 ]. New visible light active materials including CuFeO 2 [ 116 ], CuY x Fe 2-x O 4 [ 117 ], LaFeO 3 [ 118 ] have been reported as photocatalysts. Strontium titanate ferrite has been reported to have antibacterial activity under visible light irradiation [ 119 ].…”

Section: Novel Photocatalytic Materialsmentioning

confidence: 99%

A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection

et al. 2015

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Photo-excitation of certain semiconductors can lead to the production of reactive oxygen species that can inactivate microorganisms. The mechanisms involved are reviewed, along with two important applications. The first is the use of photocatalysis to enhance the solar disinfection of water. It is estimated that 750 million people do not have accessed to an improved source for drinking and many more rely on sources that are not safe. If one can utilize photocatalysis to enhance the solar disinfection of water and provide an inexpensive, simple method of water disinfection, then it could help reduce the risk of waterborne disease. The second application is the use of photocatalytic coatings to combat healthcare associated infections. Two challenges are considered, i.e., the use of photocatalytic coatings to give “self-disinfecting” surfaces to reduce the risk of transmission of infection via environmental surfaces, and the use of photocatalytic coatings for the decontamination and disinfection of medical devices. In the final section, the development of novel photocatalytic materials for use in disinfection applications is reviewed, taking account of materials, developed for other photocatalytic applications, but which may be transferable for disinfection purposes.

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Section: Novel Photocatalytic Materialsmentioning

confidence: 99%

A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection

et al. 2015

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“…Su et al prepared large surface area nanosized LaFeO 3 particles by employing SBA-16 as a hard template and compared its visible light activity for RhB degradation with that of LaFeO 3 prepared by the citric acid assisted sol-gel route [21]. Yang et al prepared LaFeO 3 by conventional co-precipitation and enhanced its activity by post-treatment in molten salt [22]. Tijare et al [23] formed nano-crystalline LaFeO 3 perovskite by the sol-gel route and claimed activity for photocatalytic hydrogen generation under visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Perovskite-type LaFeO3: Photoelectrochemical Properties and Photocatalytic Degradation of Organic Pollutants Under Visible Light Irradiation

2019

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Perovskite-type oxides lanthanum ferrite (LaFeO3) photocatalysts were successfully prepared by a facile and cost-effective sol-gel method using La(NO)3 and Fe(NO)3 as metal ion precursors and citric acid as a complexing agent at different calcination temperatures. The properties of the resulting LaFeO3 samples were characterized by powder X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDXS), UV-Vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectra (IR), transmission electron microscopy (TEM), N2 adsorption/desorption and photoelectrochemical tests. The photoactivity of the LaFeO3 samples was tested by monitoring the photocatalytic degradation of Rhodamine B (RhB) and 4-chlorophenol (4-CP) under visible light irradiation, the highest photocatalytic activity was found for LaFeO3 calcined at 700 °C, which attributed to the relatively highest surface area (10.6 m2/g). In addition, it was found from trapping experiments that the reactive species for degradation were superoxide radical ions (O2−) and holes (h+). Photocurrent measurements and electrochemical impedance spectroscopy (EIS) proved the higher photo-induced charge carrier transfer and separation efficiency of the LaFeO3 sample calcined at 700 °C compared to that that calcined at 900 °C. Band positions of LaFeO3 were estimated using the Mott-Schottky plots, which showed that H2 evolution was not likely.

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“…For example, Li and colleagues prepared LaFeO 3 nanoparticles by the sol–gel method in the citric acid system, and found that the nanoparticles could degrade Rhodamine B (RhB) under visible‐light irradiation 14 . Yang et al 15 also demonstrated that coprecipitation prepared LaFeO 3 nanoparticles showed higher photocatalytic activity than that of P25 TiO 2 . Very recently, Ding et al 16 prepared a series of LnFeO 3 nanosized powders via microwave‐assisted method, and pointed out that all the samples exhibited good photocatalytic properties in visible‐light region.…”

Section: Introductionmentioning

confidence: 99%

Sol–Gel Synthesis and Photo‐Fenton‐Like Catalytic Activity of EuFeO₃ Nanoparticles

Chen

Fang

et al. 2011

Journal of the American Ceramic Society

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EuFeO 3 (EFO) nanoparticles were prepared by sol-gel method with an aid of tartaric acid at different calcination temperatures. The prepared EFO samples were characterized by differential thermal analysis-thermogravimetry, X-ray diffraction, Fourier transform infrared spectra, Raman spectra, transmission electron microscopy, UV-visible diffuse reflectance spectrum, N 2 adsorption/desorption measurements, and photoluminescence spectra. The photocatalytic activity of the samples was evaluated by the photocatalytic decolorization of rhodamine B aqueous solution under visible-light irradiation. The calcination temperature for the highest photocatalytic activity of the EFO nanoparticles was found to be 7501C. Much enhanced photocatalytic activity was observed when adding a small amount of H 2 O 2 during the photocatalysis, indicating EFO nanoparticles have photo-Fenton-like catalytic activity. EFO nanoparticles were further demonstrated to have an excellent photocatalytic stability, which is useful for the efficient recovery of photocatalyst.

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Markedly enhancing the visible-light photocatalytic activity of LaFeO3 by post-treatment in molten salt

Cited by 29 publications

References 17 publications

A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection

A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection

Perovskite-type LaFeO3: Photoelectrochemical Properties and Photocatalytic Degradation of Organic Pollutants Under Visible Light Irradiation

Sol–Gel Synthesis and Photo‐Fenton‐Like Catalytic Activity of EuFeO₃ Nanoparticles

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Markedly enhancing the visible-light photocatalytic activity of LaFeO3 by post-treatment in molten salt

Cited by 29 publications

References 17 publications

A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection

A Review of Heterogeneous Photocatalysis for Water and Surface Disinfection

Perovskite-type LaFeO3: Photoelectrochemical Properties and Photocatalytic Degradation of Organic Pollutants Under Visible Light Irradiation

Sol–Gel Synthesis and Photo‐Fenton‐Like Catalytic Activity of EuFeO3 Nanoparticles

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Sol–Gel Synthesis and Photo‐Fenton‐Like Catalytic Activity of EuFeO₃ Nanoparticles