Enhanced photocatalytic activity under visible light by the synergistic effects of plasmonics and Ti3+-doping at the Ag/TiO2- heterojunction
Source abstract
Abstract
Abstract A heterojunction of plasmonic Ag particles on Ti3+-doped macro-/meso-porous TiO2 framework consisting of parallel microchannels, denoted as Ag/TiO2-x, has been fabricated by a simple microwave-assisted process employing vitamin C as the reducing agent for forming TiO2-x framework followed by photochemical deposition of Ag particles. Charge transport and recombination processes were detected through transient photocurrent responses. The visible-light photocatalytic hydrogen production rate and the apparent reaction rate constant of RhB photodegradation with 3%-Ag/TiO2-x catalyst are about 5.3 and 14.0 fold higher than those with the pristine macro-/meso-porous TiO2 framework, respectively. A mechanism based on the synergistic effects of Ag plasmonics and Ti3+-doping at the Ag/TiO2-x heterojunction is proposed, which consistently explains the high photocatalytic performance in hydrogen evolution and the improved photocatalytic decomposition of RhB under visible light. This study demonstrates the effective route to synthesize new heterojunction photocatalytic materials with multifunctional properties using low-cost and rapid microwave processes.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced Nanomaterials in Catalysis · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (65)
Show source-provided references
1. Titanium dioxide nanostructures for photoelectrochemical applications10.1016/j.pmatsci.2018.07.006 ↗
2. Intrinsic intermediate gap states of TiO2 materials and their roles in charge carrier kinetics10.1016/j.jphotochemrev.2019.02.001 ↗
3. Effective protect of oxygen vacancies in carbon layer coated black TiO2-x/CNNS hetero-junction photocatalyst10.1016/j.cej.2018.11.117 ↗
4. Recent advances in the catalytic oxidation of volatile organic compounds: a review based on pollutant sorts and sources10.1021/acs.chemrev.8b00408 ↗
5. Optical porous hollow-boxes assembled by SrSO4/TiO2/Pt nanoparticles for high performance of photocatalytic H2 evolution10.1016/j.nanoen.2019.02.008 ↗
6. Photocatalytic hydrogen production using metal doped TiO2: a review of recent advances10.1016/j.apcatb.2018.11.080 ↗
7. Role of surface plasmons and hot electrons on the multi-step photocatalytic decay by defect enriched Ag@TiO2 nanorods under visible light10.1021/acs.jpcc.7b05328 ↗
8. Mimicking natural photosynthesis: solar to renewable H2 fuel synthesis by Z-scheme water splitting systems10.1021/acs.chemrev.7b00286 ↗
9. Edge-selectivelyamidatedgraphene for boosting H2-evolution activity of TiO2 photocatalyst10.1016/j.apcatb.2019.118504 ↗
10. Ultrathin CdS shell-sensitized hollow S-doped CeO2 spheres for efficient visible-light photocatalysis10.1039/C8CY02206B ↗
11. Soluble g-C3N4 nanosheets: facile synthesis and application in photocatalytic hydrogen evolution10.1016/j.apcatb.2019.01.088 ↗
12. Well-designed 3D ZnIn2S4 nanosheets/TiO2 nanobelts as direct Z-scheme photocatalysts for CO2 photoreduction into renewable hydrocarbon fuel with high efficiency10.1016/j.apcatb.2017.08.016 ↗
13. Improved H2-generation performance of Pt/CdS photocatalyst by a dual-function TiO2 mediator for effective electron transfer and hole blocking10.1016/j.ceramint.2019.02.018 ↗
14. Ba5Ta4O15 nanosheet/AgVO3 nanoribbon heterojunctions with enhanced photocatalytic oxidation performance: hole dominated charge transfer path and plasmonic effect insight10.1021/acssuschemeng.8b00477 ↗
15. Facial fabrication of carbon quantum dots (CDs)-modified N-TiO2-x nanocomposite for the efficient photoreduction of Cr (VI) under visible light10.1016/j.cej.2018.09.172 ↗
16. Synergistic effect of surface plasmon resonance, Ti3+ and oxygen vacancy defects on Ag/MoS2/TiO2-x ternary heterojunctions with enhancing photothermal catalysis for low-temperature wastewater degradation10.1016/j.jhazmat.2018.09.097 ↗
17. Surface plasmon resonance-enhanced solar-driven photocatalytic performance from Ag nanoparticle-decorated self-floating porous black TiO2 foams10.1016/j.apcatb.2017.08.023 ↗
18. Ag2O nanoparticles decorated TiO2 nanofibers as a p-n heterojunction for enhanced photocatalytic decomposition of RhB under visible light irradiation10.1016/j.apsusc.2018.09.216 ↗
19. In-situ synthesis of novel p-n heterojunction of Ag2CrO4-Bi2Sn2O7 hybrids for visible-light-driven photocatalysis10.1016/j.jallcom.2018.01.100 ↗
20. Mesoporous black Ti3+/N-TiO2 spheres for efficient visible-light-driven photocatalytic performance10.1016/j.cej.2017.05.080 ↗
21. One-step hydrothermal synthesis of Ag decorated TiO2 nanoparticles for dye-sensitized solar cell application10.1016/j.renene.2018.12.062 ↗
22. Enhanced photocatalytic performance of Ag@TiO2 for the gaseous acetaldehyde photodegradation under fluorescent lamp10.1016/j.cej.2018.02.015 ↗
23. Plasmonic Ag-TiO2-x nanocomposites for the photocatalytic removal of NO under visible light with high selectivity: the role of oxygen vacancies10.1016/j.apcatb.2016.11.023 ↗
24. “Dark deposition” of Ag nanoparticles on TiO2: improvement of electron storage capacity to boost “memory catalysis” activity10.1021/acsami.8b06076 ↗
25. Plasmon Ag decorated 3D urchinlike N-TiO2-x for enhanced visible-light-driven photocatalytic performance10.1016/j.jcis.2018.03.030 ↗
26. Influence of defects on the photocatalytic activity of ZnO10.1021/jp5033349 ↗
27. Photocatalytic CO2 transformation to CH4 by Ag/Pd bimetals supported on N-doped TiO2 nanosheet10.1021/acsami.8b06320 ↗
28. TiO2/sulfonated graphene oxide/Ag nanoparticle membrane: in situ separation and photodegradation of oil/water emulsions10.1016/j.memsci.2017.12.084 ↗
29. Increasing solar absorption for photocatalysis with black hydrogenated titanium dioxide nanocrystals10.1126/science.1200448 ↗
30. Surface plasmon resonance-enhanced solar-driven photocatalytic performance from Ag nanoparticles-decorated Ti3+ self-doped porous black TiO2 pillars10.1016/j.jiec.2018.03.015 ↗
31. Surface plasmon resonance-enhanced visible-light-driven photocatalysis by Ag nanoparticles decorated S-TiO2-x nanorods10.1016/j.jtice.2017.11.023 ↗
32. Preparation of Ag/TiO2 composite foams via pickering emulsion for bactericide and photocatalysis10.1016/j.ceramint.2017.05.290 ↗
33. Promoting the interfacial H2-evolution reaction of metallic Ag by Ag2S cocatalyst: a case study of TiO2/Ag-Ag2S photocatalyst10.1016/j.apcatb.2017.12.026 ↗
34. Enhanced performances of dye-sensitized solar cells based on Au-TiO2 and Ag-TiO2 plasmonic hybrid nanocomposites10.1016/j.apsusc.2017.07.107 ↗
35. Fabrication of peanut-like TiO2 microarchitecture with enhanced surface light trapping and high specific surface area for high-efficiency dye sensitized solar cells10.1016/j.jpowsour.2019.03.090 ↗
36. ZnO nanoparticles implanted in TiO2 macrochannels as an effective direct Z-scheme heterojunction photocatalyst for degradation of RhB10.1016/j.apsusc.2018.06.182 ↗
37. The enhancement of photocatalytic hydrogen production via Ti3+ self-doping black TiO2/g-C3N4 hollow core-shell nano-heterojunction10.1016/j.apcatb.2018.09.079 ↗
38. Effects of calcining temperature on formation of hierarchical TiO2/g-C3N4 hybrids as an effective Z-scheme heterojunction photocatalyst10.1016/j.apsusc.2018.02.080 ↗
39. 3D/2D direct Z-scheme heterojunctions of hierarchical TiO2 microflowers/g-C3N4 nanosheets with enhanced charge carrier separation for photocatalytic H2 evolution10.1016/j.carbon.2019.04.088 ↗
40. Template-free preparation of macro/mesoporous g-C3N4/TiO2 heterojunction photocatalysts with enhanced visible light photocatalytic activity10.1016/j.apcatb.2016.01.026 ↗
41. Betavoltaic enhancement using defect-engineered TiO2 nanotube arrays through electrochemical reduction in organic electrolytes10.1021/acsami.8b05151 ↗
42. Plasmon-tunable Au@Ag core-shell spiky nanoparticles for surface-enhanced Raman scattering10.1007/s12274-018-2238-y ↗
43. Pd-Ag decorated g-C3N4 as an efficient photocatalyst for hydrogen production from water under direct solar light irradiation10.1039/C7CY02219K ↗
44. Hydrothermal preparation of Ag-TiO2 nanostructures with exposed {001}/{101} facets for enhancing visible light photocatalytic activity10.1016/j.ceramint.2016.11.127 ↗
45. Electrochemically self-doped WO3/TiO2 nanotubes for photocatalytic degradation of volatile organic compounds10.1016/j.apcatb.2019.118205 ↗
46. Improving photo-oxidation activity of water by introducing Ti3+ in self-ordered TiO2 nanotube arrays treated with Ar/NH310.1016/j.jpowsour.2018.12.083 ↗
47. Preparation of a p-n heterojunction 2D BiOI nanosheet/1D BiPO4 nanorod composite electrode for enhanced visible light photoelectrocatalysis10.1016/S1872-2067(18)63186-9 ↗
48. Cation-assisted formation of porous TiO2-x nanoboxes with high grain boundary density as efficient electrocatalysts for lithium-oxygen batteries10.1021/acscatal.7b04182 ↗
49. In situ Ti3+/N-codoped three-dimensional (3D) urchinlike black TiO2 architectures as efficient visible-light-driven photocatalysts10.1021/acs.iecr.7b01693 ↗
50. TiO2-x -modified Ni nanocatalyst with tunable metal-support interaction for water-gas shift reaction10.1021/acscatal.7b01951 ↗
51. Hydrogenated blue titania for efficient solar to chemical conversions: preparation, characterization, and reaction mechanism of CO2 reduction10.1021/acscatal.7b03473 ↗
52. Mesoporous black TiO2-x/Ag nanospheres coupled with g-C3N4 nanosheets as 3D/2D ternary heterojunctions visible light photocatalysts10.1016/j.jhazmat.2017.09.031 ↗
53. Microwave-assisted synthesis of Ag-TiO2/graphene composite for hydrogen production under visible light irradiation10.1016/j.ceramint.2016.08.149 ↗
54. Enhanced solar hydrogen evolution over in situ gold-platinum bimetallic nanoparticle-loaded Ti3+ self-doped titania photocatalysts10.1021/acssuschemeng.7b02898 ↗
55. Ethyl acetate-induced formation of amorphous MoSx nanoclusters for improved H2-evolution activity of TiO2 photocatalyst10.1016/j.cej.2019.121934 ↗
56. Defective TiO2 with oxygen vacancies: synthesis, properties and photocatalytic applications10.1039/c3nr00476g ↗
57. In-situ photocalorimetry-fluorescence spectroscopy studies of RhB photocatalysis over Z-schemeg-C3N4@Ag@Ag3PO4 nanocomposites: a pseudo-zero-order rather than a first-order process10.1016/j.apcatb.2017.05.086 ↗
58. Evaluating the sensitizing effect on the photocatalytic decoloration of dyes using anatase-TiO210.1016/j.apcatb.2013.11.014 ↗
59. Enhanced photocatalytic CO2 valorization over TiO2 hollow microspheres by synergetic surface tailoring and Au decoration10.1039/C8TA09661A ↗
60. Assessment of photocatalytic hydrogen production from biomass or wastewaters depending on the metal co-catalyst and its deposition method on TiO210.3390/catal9070584 ↗
61. Metal catalysts for heterogeneous catalysis: from single atoms to nanoclusters and nanoparticles10.1021/acs.chemrev.7b00776 ↗
62. Ag/TiO2 nanofiber heterostructures: highly enhanced photocatalysts under visible light10.1063/1.4803844 ↗
63. Correlation of the plasmon-enhanced photoconductance and photovoltaic properties of core-shell Au@TiO2 network10.1063/1.4961884 ↗
64. Progress and perspectives of plasmon-enhanced solar energy conversion10.1021/acs.jpclett.5b02393 ↗
65. Plasmonic enhancement of biosolar cells employing light harvesting complex II incorporated with core-shell metal@TiO2 nanoparticles10.1002/admi.201600371 ↗