Fabrication of Fe3O4@graphene/TiO2 nanohybrid with enhanced photocatalytic activity for isopropanol degradation
Source abstract
Abstract
Abstract We report on the fabrication of a Fe3O4@graphene/TiO2 (F@G/TiO2) nanohybrid using a facile two-step hydrothermal method. Compared with either the binary graphene/TiO2 (G/TiO2) or pure TiO2, the ternary F@G/TiO2 nanohybrid exhibited an apparently improved performance for photocatalytic isopropanol (IPA) degradation, and the sample F1@G/TiO2 (0.4 wt% Fe3O4 and 0.2 wt% graphene) achieved the highest activity (262.5 μmoL/h for acetone evolution; 28.8 μmoL/h for CO2 evolution) under an AM 1.5G solar simulator irradiation. In the F@G/TiO2 nanohybrid, the magnetic field arisen from Fe3O4 and the excellent electrical conductivity of graphene were believed to facilitate the separation and transport of photoinduced electrons and holes in TiO2. As a consequence, the synergetic effect could account for the enhanced photocatalytic activity of F@G/TiO2 nanohybrid. Mechanistic study indicated that O2•− and hole were the main reactive oxygen species for photocatalytic IPA degradation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Covalent Organic Framework Applications · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Environmental applications of semiconductor photocatalysis10.1021/cr00033a004 ↗
2. Photocatalysis on TiO2 surfaces: principles, mechanisms, and selected results10.1021/cr00035a013 ↗
3. Wafer-level photocatalytic water splitting on GaN nanowire arrays grown by molecular beam epitaxy10.1021/nl2006802 ↗
4. Recent progress on titanium dioxide nanomaterials for photocatalytic applications10.1002/cssc.201800874 ↗
5. Nano-photocatalytic materials: possibilities and challenges10.1002/adma.201102752 ↗
6. Hydrogen evolution under the influence of a magnetic field10.1016/j.electacta.2010.12.031 ↗
7. Experimental and theoretical studies on the effects of magnetic fields on the arrangement of surface spins and the catalytic activity of Pd nanoparticles10.1021/am509218a ↗
8. Enhanced ferroelectric-nanocrystal-based hybrid photocatalysis by ultrasonic-wave-generated piezophototronic effect10.1021/nl504630j ↗
9. Synthesis of mesoporous graphene and tourmaline co-doped titania composites and their photocatalytic activity towards organic pollutant degradation and eutrophic water treatment10.1016/j.catcom.2012.09.008 ↗
10. Synthesis of graphene/tourmaline/TiO2 composites with enhanced activity for photocatalytic degradation of 2-propanol10.1016/S1872-2067(17)62795-5 ↗
11. Yolk-shell structured Fe3O4@void@TiO2 as a photo-Fenton-like catalyst for the extremely efficient elimination of tetracycline10.1016/j.apcatb.2016.07.043 ↗
12. Recyclable Fe3O4/SiO2/TiO2/Cu nanocomposites: synthesis, characterization and investigation of the photocatalytic and magnetic property10.1007/s10854-017-6688-x ↗
13. Construction of rGO/Fe3O4/Ag3PO4 multifunctional composite as recyclable adsorbent and photocatalysts towards the mixture of dyes in water under visible light irradiation10.1016/j.matlet.2016.09.061 ↗
14. Sodium citrate functionalized reusable Fe3O4@TiO2 photocatalyst for water purification10.1016/j.cplett.2017.08.046 ↗
15. Intrinsic magnetic characteristics-dependent charge transfer and visible photo-catalytic H2 evolution reaction (HER) properties of a Fe3O4@PPy@Pt catalyst10.1039/C5CC09017B ↗
16. Enhanced photocatalytic performance through magnetic field boosting carrier transport10.1021/acsnano.7b08770 ↗
17. Synthesis of magnetite–semiconductor–metal trimer nanoparticles through functional modular assembly: a magnetically separable photocatalyst with photothermic enhancement for water reduction10.1021/acsami.7b17046 ↗
18. Magnetically separable Fe3O4/TiO2 hollow spheres: fabrication and photocatalytic activity10.1021/jp8073859 ↗
19. Magnetically recoverable core–shell nanocomposites with enhanced photocatalytic activity10.1002/chem.200903516 ↗
20. Fe3O4 coupled BiOCl: a highly efficient magnetic photocatalyst10.1016/j.apcatb.2009.04.005 ↗
21. Super-paramagnetic nano-Fe3O4/graphene for visible-light-driven hydrogen evolution10.1039/C5CC01925G ↗
22. Graphene double protection strategy to improve the SnO2 electrode performance anodes for lithium-ion batteries10.1016/j.nanoen.2013.10.009 ↗
23. Platinum-like behavior of reduced graphene oxide as a cocatalyst on TiO2 for the efficient photocatalytic oxidation of arsenite10.1021/ez5000012 ↗
24. Graphene oxide–Fe2O3 hybrid material as highly efficient heterogeneous catalyst for degradation of organic contaminants10.1016/j.carbon.2013.04.058 ↗
25. Graphene-based semiconductor photocatalysts10.1039/C1CS15172J ↗
26. Magnetically separable reduced graphene oxide/iron oxide nanocomposite materials for environmental remediation10.1039/C4CY00806E ↗
27. Enhanced visible-light photocatalytic performance of electrospun rGO/TiO2 composite nanofibers10.1021/acs.jpcc.6b08840 ↗
28. Mesoporous ZnFe2O4@TiO2 nanofibers prepared by electron spinning coupled to PECVD as high performing photocatalytic materials10.1021/acs.jpcc.7b08567 ↗
29. Facile synthesis of ZnFe2O4/reduced graphene oxide nanohybrids for enhanced microwave absorption properties10.1016/j.materresbull.2014.10.004 ↗
30. Facile synthesis of layered Zn2SnO4/graphene nanohybrid by a one-pot route and its application as high-performance anode for Li-ion batteries10.1016/j.jpowsour.2012.11.090 ↗
31. In situ assembly of graphene sheets-supported SnS2 nanoplates into 3D macroporous aerogels for high-performance lithium ion batteries10.1016/j.jpowsour.2013.03.048 ↗
32. Assembly of Ni(OH)2 nanoplates on reduced graphene oxide: a two dimensional nanocomposite for enzyme-free glucose sensing10.1039/c1jm11641j ↗
33. Chemically bonded TiO2–bronze nanosheet/reduced graphene oxide hybrid for high-power lithium ion batteries10.1021/nn405534r ↗
34. Controlled fabrication of PbS quantum-dot/carbon-nanotube nanoarchitecture and its significant contribution to near-infrared photon-to-current conversion10.1002/adfm.201100824 ↗
35. Tuning the charge-transfer property of PbS-quantum dot/TiO2-nanobelt nanohybrids via quantum confinement10.1021/jz100144w ↗
36. Anatase TiO2 single crystals exposed with high-reactive {111} facets toward efficient H2 evolution10.1021/cm303502b ↗
37. Constructing solid–gas-interfacial fenton reaction over alkalinized-C3N4 photocatalyst to achieve apparent quantum yield of 49% at 420 nm10.1021/jacs.6b07272 ↗
38. Experimental microkinetic approach of the photocatalytic oxidation of isopropyl alcohol on TiO2. Part 1. surface elementary steps involving gaseous and adsorbed C3HxO species10.1021/jp055342b ↗
39. Hierarchically ordered macro−mesoporous TiO2−graphene composite films: improved mass transfer, reduced charge recombination, and their enhanced photocatalytic activities10.1021/nn102767d ↗
40. P25-graphene composite as a high performance photocatalyst10.1021/nn901221k ↗
41. Effect of nitrogen-plasma surface treatment to the enhancement of TiO2 photocatalytic activity under visible light-irradiation10.1016/j.molcata.2006.08.020 ↗
42. New series of solid-solution semiconductors (AgNbO3)1−x(SrTiO3)x with modulated band structure and enhanced visible-light photocatalytic activity10.1021/jp807393a ↗
43. Enhanced photocatalytic degradation of 2-propanol over macroporous GaN/ZnO solid solution prepared by a novel sol-gel method10.1063/1.4928702 ↗
44. Mechanistic insights into TiO2 thickness in Fe3O4@TiO2-GO composites for enrofloxacin photodegradation10.1016/j.cej.2017.05.092 ↗
45. Synergetic effect of MoS2 and graphene as cocatalysts for enhanced photocatalytic H2 production activity of TiO2 nanoparticles10.1021/ja302846n ↗