Effects of precursors on the phase, magnetic and photocatalytic properties of nano Fe2O3 synthesized by low temperature calcination
Source abstract
Abstract
Abstract By calcining ferric acetylacetonate (Fe(ACAC)3), Fe(NO3)3·9H2O and FeCl3·6H2O in air at 300 °C for 5 h, maghemite (γ-Fe2O3) nanoparticles, hematite (α-Fe2O3) nanoparticles and α-Fe2O3 nanoflakes were synthesized, respectively. The γ-Fe2O3 nanoparticles demonstrated far stronger magnetism (remanent magnetization (Mr) = 9.9 emu/g) than α-Fe2O3 nanoparticles (Mr = 0.06 emu/g) and nanoflakes (Mr = 0.13 emu/g) at room temperature. For photocatalytic reduction of aqueous Cr(VI) in the presence of visible-light and citric acid, the performance of different Fe2O3 samples was found to be in the order of α-Fe2O3 from FeCl3·6H2O > γ-Fe2O3 from Fe(ACAC)3 > hydrothermally synthesized α-Fe2O3 nanorods > α-Fe2O3 from Fe(NO3)3·9H2O > hydrothermally synthesized α-Fe2O3 nanoparticles. This work reveals the decisive role of precursors in the phase, magnetic and photocatalytic properties of low temperature calcination-synthesized Fe2O3. The phase-tunable synthesis of nano Fe2O3 by low temperature calcination of easily available precursors is simple, cost-effective and practical for large scale industrial production.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Iron oxide chemistry and applications · Magnetic Properties and Synthesis of Ferrites · Nanoparticle-Based Drug Delivery
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (24)
Show source-provided references
1. Singh, et al, phase transformation and structural evolution in iron oxide nanostructures10.1016/j.mseb.2021.115329 ↗
2. The evaluation of the photocatalytic activity of magnetic and non-magnetic polymorphs of Fe2O3 in natural sunlight exposure: a comparison of photocatalytic activity10.1016/j.apsusc.2018.04.219 ↗
3. Controllable synthesis and magnetic properties of pure hematite and maghemite nanocrystals from a molecular precursor10.1016/j.jallcom.2007.07.115 ↗
4. Morphology-tunable synthesis of intrinsic room-temperature ferromagnetic γ-Fe2O3 nanoflakes10.1021/acsami.1c05342 ↗
5. Crystal phase effect of iron oxides on the aerobic oxidative coupling of alcohols and amines under mild conditions: a combined experimental and theoretical study10.1016/j.jcat.2019.06.018 ↗
6. Morphology controlled synthesis of α-Fe2O3-x with benzimidazole-modified Fe-MOFs for enhanced photo-Fenton-like catalysis10.1016/j.apcatb.2021.120129 ↗
7. A review on exploration of Fe2O3 photocatalyst towards degradation of dyes and organic contaminants10.1016/j.jenvman.2019.110050 ↗
8. α-Fe2O3 as a photocatalytic material: A review10.1016/j.apcata.2015.03.023 ↗
9. Comparison of the photoactivity of several semiconductor oxides in floating aerogel and suspension systems towards the reduction of Cr(VI) under visible light10.1016/j.chemosphere.2021.130839 ↗
10. Insights for optimum cation defects in photocatalysis: a case study of hematite nanostructures10.1016/j.apcatb.2019.118506 ↗
11. Porous Fe2O3 nanotubes with α-γ phase junction for enhanced charge separation and photocatalytic property produced by molecular layer deposition10.1016/j.apcatb.2019.02.029 ↗
12. Facet-specific photocatalytic degradation of organics by heterogeneous Fenton chemistry on hematite nanoparticles10.1021/acs.est.9b02946 ↗
13. Facile synthesis of hollow α-Fe2O3 nanospindle and its superior photocatalytic performance for water oxidation10.1016/j.catcom.2021.106306 ↗
14. Iron-based photocatalytic and photoelectrocatalytic nano-structures: facts, perspectives, and expectations10.1016/j.apcatb.2018.12.014 ↗
15. Hierarchically three-dimensional (3D) nanotubular sea urchin-shaped iron oxide and its application in heavy metal removal and solar-induced photocatalytic degradation10.1016/j.jhazmat.2018.04.048 ↗
16. Performance enhancement of hematite photoanode with oxygen defects for water splitting10.1016/j.cej.2020.126163 ↗
17. Defects-engineering of magnetic γ-Fe2O3 ultrathin nanosheets/mesoporous black TiO2 hollow sphere heterojunctions for efficient charge separation and the solar-driven photocatalytic mechanism of tetracycline degradation10.1016/j.apcatb.2018.08.033 ↗
18. Sustainable and easy recoverable magnetic TiO2-Lignocellulosic biomass@Fe3O4 for solar photocatalytic water remediation10.1016/j.jclepro.2019.06.125 ↗
19. Synthesis and characterization of α-Fe2O3 nanoparticles from different precursors and their catalytic effect on the thermal decomposition of nitrocellulose10.1016/j.tca.2020.178570 ↗
20. Synthesis, structural, morphological, optical and magnetic characterization of iron oxide (α-Fe2O3) nanoparticles by precipitation method: effect of varying the nature of precursor10.1016/j.physe.2017.12.004 ↗
21. Structural, optical and Mössbauer investigation on the biosynthesized α-Fe2O3: study on different precursors10.1016/j.physe.2019.03.010 ↗
22. Phase-controlled synthesis of ZnS nanocrystallites by mild solvothermal decomposition of an air-stable single-source molecular precursor10.1016/j.jcrysgro.2005.07.023 ↗
23. Photocatalytic reduction of Cr(VI) on hematite nanoparticles in the presence of oxalate and citrate10.1016/j.apcatb.2018.09.059 ↗
24. Simultaneous removal of methylene blue and hexavalent chromium from water using TiO2/Fe(III)/H2O2/sunlight10.1002/clen.201500379 ↗