Synthesis, characterization and photocatalytic evaluation of strontium ferrites towards H2 production by water splitting under visible light irradiation

Ferrite Materials for Photoassisted Environmental and Solar Fuels Applications

“…2.5, resulting in an apparent quantum yield of 1.57 % under 420 nm irradiation. Different strontium ferrites, namely the cubic, hexagonal and orthorhombic SrFe2O4, SrFe12O19 and Sr7Fe10O22, respectively, were selectively obtained by Jiménez-Miramontes et al by modifying the crystallisation conditions in the Pechini synthetic method [165]. Among the three crystalline phases, the activity towards hydrogen production under UV irradiation was maximum for the cubic one, with the hexagonal phase yielding a two orders of magnitude lower amount of hydrogen as a result of unsuitable band positions.…”

Methanol and Triethanolamine Effect as Sacrifice Agents in the Photocatalytic Production of Hydrogen over Zinc Titanates

“…Sol-gel was used for the synthesis of ZTO, employing the modified Pechini method [4,5]. In Figure 17, a synthesis diagram of the ZTO is shown.…”

“…Some methods of hydrogen production are photochemical processes (photoelectrochemical, photocatalytic, etc.) [3][4][5][6]. Among various technologies proposed for the generation of hydrogen, photocatalysis has a great potential since through the use of semiconductors and solar energy, it is possible to carry out both, the production of hydrogen and the degradation of pollutants [7,8].…”

The facile synthesis of and light-driven water splitting on a hetero-metallic bismuth oxide catalyst

“…22 In addition, these perovskites can provide more options for modifying the electrical structure, charge carrier concentration, and electron transfer capability, etc . 23,24 They also have high proton conductivity, high chemical stability, abundant storage, and cost-effectiveness that are required for photovoltaic cells, photocatalytic water splitting, light-driven carbon dioxide reduction, and photocatalytic degradation of pollutants. 25–27…”

“…22 In addition, these perovskites can provide more options for modifying the electrical structure, charge carrier concentration, and electron transfer capability, etc. 23,24 They also have high proton conductivity, high chemical stability, abundant storage, and cost-effectiveness that are required for photovoltaic cells, photocatalytic water splitting, light-driven carbon dioxide reduction, and photocatalytic degradation of pollutants. [25][26][27] Bi 2 O 3 , a post-transition metal oxide with a gap of 2.8 eV and readily accessible two-electron redox couples has received increasing attention in recent years as the ideal alternative for large-scale applications and photocatalytic redox processes such as H 2 generation and CO 2 reduction, as well as many other interesting applications such as the degradation of organic pollutants, gas sensing, solid oxide fuel cells, ceramic glass fabrication, and optical coating, owing to its low toxicity, low cost, and abundant polymorphism.…”