Phosphotungstic acid supported on aminosilica functionalized perovskite-type LaFeO₃nanoparticles: a novel recyclable and excellent visible-light photocatalyst

Abstract

In this research, a novel nanohybrid compound, LaFeO3@SiO2–NH2/PTA has been prepared, in which H3PW12O40 (abbreviated as PTA) was successfully anchored onto the surface of 3-aminopropylsilica modified LaFeO3.

Photothermal catalytic activity of combustion synthesized LaCoxFe1−xO3 (0 ≤ x ≤ 1) perovskite for CO2 reduction with H2O to CH4 and CH3OH

“…Furthermore, the smaller the crystallite size, the shorter the migration time of photoinduced charge carriers from the bulk to the surface, meaning that they have chance to reach to surface before recombination to improve the catalytic efficiency. 38 Lastly, we focus on the specic effects of band structure and oxygen vacancies on photothermal activity. By adjusting the band structure of the material, the band gaps of the Co-doped samples became smaller and the positions of the CB and VB became more suitable for CO 2 photo reduction.…”

“…LaFeO 3 has shown great promising in terms of catalytic activity in the photocatalytic decomposition of water and the degradation of organic pollutants. [34][35][36][37][38] The efficiency of a material in harnessing solar energy is related to its band gap, which determines the range of the incident photon band that can be absorbed and can further affects the photocatalytic activity. 39 For the typical ABO 3 perovskite, both A-and B-site can be substituted to modify the local electronic structure, band gap and oxygen vacancy concentration in order to realize versatile properties.…”

Preparation of novel hybrid nanomaterials based on LaFeO3 and phosphotungstic acid as a highly efficient magnetic photocatalyst for the degradation of methylene blue dye solution

“…Hybrid nanomaterials 1 were synthesized under several steps as shown in Figure 1. The LaFeO 3 nanomaterials were synthesized with decomposition of La[Fe (CN) 6 ] · 5H 2 O in an electric furnace at 600°C for 2 h. [ 16 ] For synthesis of magnetic nanomaterials, the LaFeO 3 nanomaterials (0.2 g) were dispersed in deionized water (30 ml) by sonicating for 30 min. Then ammonium iron(III) sulfate (1.2 g) and ammonium iron(II) sulfate (0.35 g) were added to above mixture and stirred at 40°C.…”

“…[ 12–14 ] In recent years, the photocatalytic activity of perovskite oxides such as BiFeO 3 , LaNiO 3 , YMnO 3 , LaFeO 3 , and TbFeO 3 has attracted considerable attention due to their relatively small bandgaps. [ 15,16 ] Among them, LaFeO 3 nanostructure considered as a promising candidate because of extraordinary optical behavior and high stability. [ 17 ] Also, it is a potential semiconductor material that used as an efficient photocatalyst under visible light because of its narrow band gap energy.…”

Rational Construction of LaFeO3 Perovskite Nanoparticle-Modified TiO2 Nanotube Arrays for Visible-Light Driven Photocatalytic Activity

“…In such an architecture, a narrow bandgap LFO could be easily activated by visible light. In addition, coupling with wide bandgap oxide TiO 2 , heterostructures make the division of the desired device's functions (e.g., light absorption and long-range carrier transfer) between coupled materials more feasible [20].…”