Charge transfer in SnS 2 /Na 0.9 Mg 0.45 Ti 3.55 O 8 heterojunction in photocatalytic process
Source abstract
Abstract
Abstract SnS 2 /Na 0.9 Mg 0.45 Ti 3.55 O 8 (SNMTO) composite photocatalyst was synthesized by a hydrothermal method. The chemical combination in lattice scale between SnS 2 and Na 0.9 Mg 0.45 Ti 3.55 O 8 (NMTO) was observed by high-resolution transmission electron microscopy, indicating that heterojunctions were obtained between SnS 2 and NMTO. The photocatalytic activity of SNMTO heterojunctions was improved in comparison with that of pure NMTO and SnS 2 for the photocatalytic degradation of methylene blue and Rhodamine B. Electrons were excited in n-type semiconductors NMTO and SnS 2 under light illumination, and a part of them moved to the interface, determined with the surface potential reduction observed directly by Kelvin probe force microscopy. The charge redistribution in the composite illustrates a high density of interface states between SnS 2 and NMTO, which attract lots of photoelectrons, as a result enhancing the photocatalytic performance. This finding is very different from the speculation that the photogenerated electrons and holes migrate from one part to another because it is difficult for charge carriers to travel through the interface with high energy.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. Structure, synthesis, and applications of TiO2 nanobelts10.1002/adma.201405589 ↗
2. Present perspectives of advanced characterization techniques in TiO2-based photocatalysts10.1021/acsami.7b00496 ↗
3. Nanocrystal-engineered thin CuO film photocatalyst for visible-light-driven photocatalytic degradation of organic pollutant in aqueous solution10.1016/j.cattod.2018.12.019 ↗
4. Surface oxygen vacancy defect-promoted electron-hole separation for porous defective ZnO hexagonal plates and enhanced solar-driven photocatalytic performance10.1016/j.cej.2019.122295 ↗
5. Visible-light-driven BiOI-based janus micromotor in pure water10.1021/jacs.6b09863 ↗
6. Room-temperature synthesis of BiOI with tailorable (001) facets and enhanced photocatalytic activity10.1016/j.jcis.2016.06.012 ↗
7. Impact of oxygen vacancy occupancy on charge carrier dynamics in BiVO4 photoanodes10.1021/jacs.9b09056 ↗
8. Nitrogen doped carbon quantum dots and GO modified WO3 nanosheets combination as an effective visible photo catalyst10.1016/j.jhazmat.2019.121087 ↗
9. Non-noble metal thickness-tunable Bi2MoO6 nanosheets for highly efficient visible-light-driven nitrobenzene reduction into aniline10.1016/j.apcatb.2019.118087 ↗
10. Highly sensitive NO2 gas sensors based on hexagonal SnS2 nanoplates operating at room temperature10.1088/1361-6528/ab5271 ↗
11. A new-type of semiconductor Na0.9Mg0.45Ti3.55O8: preparation, characterization and photocatalysis10.1039/C4TA04874A ↗
12. Visible-light activation of TiO2 photocatalysts: advances in theory and experiments10.1016/j.jphotochemrev.2015.08.003 ↗
13. Surface and interface engineering of hierarchical photocatalysts10.1016/j.apsusc.2018.11.205 ↗
14. Water splitting progress in tandem devices: moving photolysis beyond electrolysis10.1002/aenm.201600602 ↗
15. Black phosphorene as a hole extraction layer boosting solar water splitting of oxygen evolution catalysts10.1038/s41467-019-10034-1 ↗
16. Heterojunction photocatalysts10.1002/adma.201601694 ↗
17. Direct Z-scheme photocatalysts: principles, synthesis, and applications10.1016/j.mattod.2018.04.008 ↗
18. Recent progress on visible light responsive heterojunctions for photocatalytic applications10.1016/j.jmst.2016.11.017 ↗
19. Exceptional synergistic enhancement of the photocatalytic activity of SnS2 by coupling with polyaniline and N-doped reduced graphene oxide10.1016/j.apcatb.2018.05.002 ↗
20. Ultrathin SnS2 nanosheets with exposed {001} facets and enhanced photocatalytic properties10.1016/j.actamat.2013.11.076 ↗
21. MXene-decorated SnS2/Sn3S4 hybrid as anode material for high-rate lithium-ion batteries10.1016/j.cej.2019.122590 ↗
22. One step synthesis of SnS2–SnO2 nano-heterostructured as an electrode material for supercapacitor applications10.1016/j.jallcom.2018.12.176 ↗
23. Ultrafast third-order optical nonlinearity in SnS2 layered compound for photonic applications10.1016/j.optmat.2017.12.023 ↗
24. Construction of a two-dimensional composite derived from TiO2 and SnS2 for enhanced photocatalytic reduction of CO2 into CH410.1021/acssuschemeng.8b04250 ↗
25. Facile fabrication of ZnIn2S4/SnS2 3D heterostructure for efficient visible-light photocatalytic reduction of Cr(VI)10.1016/S1872-2067(19)63422-4 ↗
26. Construction of Ni-doped SnO2–SnS2 heterojunctions with synergistic effect for enhanced photodegradation activity10.1016/j.jhazmat.2019.01.009 ↗
27. In situ construction of a Cs2SnI6 perovskite nanocrystal/SnS2 nanosheet heterojunction with noosted interfacial charge transfer10.1021/jacs.9b04482 ↗
28. Rational design of Z-scheme LaFeO3/SnS2 hybrid with boosted visible light photocatalytic activity towards tetracycline degradation10.1016/j.seppur.2018.08.028 ↗
29. Construction of 2D/2D porous graphitic C3N4/SnS2 composite as a direct Z-scheme system for efficient visible photocatalytic activity10.1016/j.apsusc.2019.03.221 ↗
30. Construction of 2D SnS2/g-C3N4 Z-scheme composite with superior visible-light photocatalytic performance10.1016/j.apsusc.2018.10.118 ↗
31. Enhanced photoexcited carrier separation in CdS–SnS2 heteronanostructures: a new 1D–0D visible-light photocatalytic system for the hydrogen evolution reaction10.1039/C9TA03059J ↗
32. Enhanced photocatalytic activity of CdS/SnS2 nanocomposite with highly-efficient charge transfer and visible light utilization for selective reduction of 4-nitroaniline10.1016/j.jcis.2018.08.017 ↗
33. Imaging photogenerated charge carriers on surfaces and interfaces of photocatalysts with surface photovoltage microscopy10.1039/C8CS00320C ↗
34. Advanced space- and time-resolved techniques for photocatalyst studies10.1039/C9CC07128H ↗
35. Scanning probe microscopy for real-space observations of local chemical reactions induced by a localized surface plasmon10.1039/C9CP02100K ↗
36. 2H- and 1T- mixed phase few-layer MoS2 as a superior to Pt co-catalyst coated on TiO2 nanorod arrays for photocatalytic hydrogen evolution10.1016/j.apcatb.2018.09.040 ↗
37. Origin of photocatalytic activity in Ti4+/Ti3+ core–shell titanium oxide nanocrystals10.1021/acs.jpcc.9b05285 ↗
38. C3N5: A low bandgap semiconductor containing an azo-linked carbon nitride framework for photocatalytic, photovoltaic and adsorbent applications10.1021/jacs.9b00144 ↗
39. Charge separation via asymmetric illumination in photocatalytic Cu2O particles10.1038/s41560-018-0194-0 ↗
40. Plasmon-enhanced photocatalytic activity of Na0.9Mg0.45Ti3.55O8 loaded with noble metals directly observed with scanning Kelvin probe microscopy10.1088/1361-6528/aac34a ↗
41. Quantitative investigation of plasmonic hot-electron injection by KPFM10.1016/j.apsusc.2019.06.109 ↗
42. Direct observation of plasmon-induced interfacial charge separation in metal/semiconductor hybrid nanostructures by measuring surface potentials10.1021/acs.nanolett.7b03540 ↗
43. A hot-electron-triggered catalytic oxidation reaction of plasmonic silver nanoparticles evidenced by surface potential mapping10.1039/C8TA07179A ↗
44. Spatial charge separation in asymmetric structure of Au nanoparticle on TiO2 nanotube by light-induced surface potential imaging10.1021/nl501381a ↗
45. Two-step hydrothermal fabrication of Na0.23TiO2 nanofibers and enhanced photocatalysis after loaded with gold or silver determined by surface potentials10.1002/er.4466 ↗
46. Construction and nanoscale detection of interfacial charge transfer of elegant Z-Scheme WO3/Au/In2S3 nanowire arrays10.1021/acs.nanolett.6b02094 ↗
47. Interface role in the enhanced photocatalytic activity of TiO2–Na0.9Mg0.45Ti3.55O8 nanoheterojunction10.1063/1.4975654 ↗
48. Ag/TiO2 sol prepared by a sol–gel method and its photocatalytic activity10.1016/j.jpcs.2011.07.025 ↗
49. Hierarchical assembly of ultrathin hexagonal SnS2 nanosheets onto electrospun TiO2 nanofibers: enhanced photocatalytic activity based on photoinduced interfacial charge transfer10.1039/C2NR32301J ↗
50. Ligand-exchange assisted formation of Au/TiO2 Schottky contact for visible-light photocatalysis10.1021/nl503585m ↗
51. Plasmonic Z-scheme Ag2O–Bi2MoO6 p-n heterojunction photocatalysts with greatly enhanced visible-light responsive activities10.1016/j.matlet.2016.11.114 ↗
52. Facile synthesis of BiOBr/Bi2WO6 heterojunction semiconductors with high visible-light-driven photocatalytic activity10.1016/j.jphotochem.2015.04.024 ↗
53. Photocatalytic degradation of Methylene Blue using a mixed catalyst and product analysis by LC/MS10.1016/j.cej.2009.11.017 ↗
54. Photocatalytic degradation of methylene blue with a nanocomposite system: synthesis, photocatalysis and degradation pathways10.1039/C4CP03877K ↗
55. Photocatalytic degradation of methylene blue with P25/graphene/polyacrylamide hydrogels: optimization using response surface methodology10.1016/j.jhazmat.2020.123314 ↗