Synthesis of novel CuO/LaFeO 3 nanocomposite photocatalysts with superior Fenton-like and visible light photocatalytic activities for degradation of aqueous organic contaminants

Photocatalytic degradation of phenol by LaFeO3 nanocrystalline synthesized by gel combustion method via citric acid route

“…4a, LaFeO 3 nanocrystalline possesed an excellent optical absorption capability in entire wavelength, from UV to visible to near-infrared region. It is postulated that this behaviour will contribute to good photocatalytic activity of LaFeO 3 across broad spectrum of light, and this result is in accordance to previous studies [13,14]. In order to better classify the synthesized LaFeO 3 as a good photocatalyst, especially for photodegradation of organic contaminants such as phenol, the study of their band gap is important.…”

“…0.1 g of LaFeO 3 was suspended in 100 mL phenol solution (30 mg/L at pH6) with 10 mL/L of 3% hydrogen peroxide (H 2 O 2 ) added that act as degradation catalyst. The addition of H 2 O 2 is known to enhanced the photocatalytic activities of LaFeO 3 due to simultaneous effect of Fenton-like and photocatalysis mechanism, based on a study carried out by Soltanabadi et al [13]. The mixture was continuously stirred to prohibit the settling of LaFeO 3 at the bottom of the beaker.…”

Adsorption and photo-Fenton catalytic degradation of organic dyes over crystalline LaFeO3-doped porous silica

“…65 Some studies speculated that h + could activate dye*, which was formed aer light absorption of dye (eqn (13)), into dye + (eqn (14)); dye + or dye was then oxidized by cOH radical (eqn (15)). 66,67 To investigate the mechanism for photo-Fenton-like degradation over HPS-0.15LFO, the effect of active species, such as hole (h + ) and hydroxyl radicals (cOH), in the process was explored. Ethanol and ammonium oxalate (AO) were selected for use as the scavengers of cOH and h + in the trapping experiment, respectively.…”

Strategies for the deposition of LaFeO3 photocathodes: improving the photocurrent with a polymer template

“…LaFeO 3 (LFO), with a band gap between 2.1 and 2.6 eV, has shown activity for dye degradation 27 and as a p-type photocathode for oxygen and water reduction. [28][29][30][31] LFO has been successfully doped with metals to achieve increased photocurrent. The photocurrent achieved for undoped LFO was recorded to be À10 mA cm À2 at À0.25 V AgCl under simulated sunlight (100 mW cm À2 ) and increased to approximately À50 mA cm À2 on doping with 5% Mg, with O 2 -purged electrolyte.…”