Fluorination promoted photoinduced modulation of Pt clusters on oxygen vacancy enriched TiO2/Pt photocatalyst for superior photocatalytic performance
Source abstract
Abstract
Abstract This work centered on the effects of F modification on the interfacial behaviors between Pt clusters and TiO2, especially oxygen vacancy (Ov) enriched TiO2 (V-TiO2), under UV pretreatment for improving the photocatalytic activity. F modification benefited the reduction from PtOx to Pt0 and Pt-Oads under UV pretreatment for F modified TiO2/Pt (F-TiO2/Pt), resulting in the increasing of photocatalytic reactive sites. While for F modified V-TiO2/Pt (F-V-TiO2/Pt) case, F preserved the excellent property of Ovs on optically modulating Pt clusters to smaller size, which further enhanced the photocatalytic reactivity of the UV pretreated F-V-TiO2/Pt. F chemically stabilized Ovs on F-V-TiO2/Pt during the UV pretreatment, leading to a more stable photocatalytic activity than F-free ones. The significantly enhanced performances of F modified catalysts with various UV pretreatment times were evaluated with CO photocatalytic oxidation. The best CO photocatalytic constant rates of F-TiO2/Pt and F-V-TiO2/Pt obtained at 4.0 h of UV pretreatment time were ca. 6.6 times and ca. 4.2 times as high as that untreated ones, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Generation of active sites for CO photooxidation on TiO2 by platinum deposition10.1021/jp0343638 ↗
2. Influence of the form of photodeposited platinum on titania upon its photocatalytic activity in CO and acetone oxidation10.1016/S1010-6030(99)00073-8 ↗
3. Facile synthesis of NaOH-promoted Pt/TiO2 catalysts for toluene oxidation under visible light irradiation10.1016/j.apsusc.2018.11.060 ↗
4. Inter-relationship between Pt oxidation states on TiO2 and the photocatalytic mineralisation of organic matters10.1016/j.jcat.2007.08.008 ↗
5. Photocatalytic reactivity of surface platinized TiO2:substrate specificity and the effect of Pt oxidation state10.1021/jp044425+ ↗
6. Photocatalytic reforming of glycerol for H2 evolution on Pt/TiO2: fundamental understanding the effect of co-catalyst Pt and the Pt deposition route10.1039/C4TA06052K ↗
7. Effect of surface deposited Pt on the photoactivity of TiO210.1021/jp301862m ↗
8. Light, catalyst, activation: boosting catalytic oxygen activation using a light pretreatment approach10.1021/acscatal.7b00700 ↗
9. The role of adsorbed oxygen in formic acid oxidation by Pt/TiO2 facilitated by light pre-treatment10.1039/C6CY00939E ↗
10. Photo-induced re-modulation of Pt particles loaded on V-TiO2 for enhanced CO photocatalytic oxidation10.1039/C7CY01220A ↗
11. Revealing the key oxidative species generated by Pt-loaded metal oxides under dark and light conditions10.1016/j.apcatb.2017.08.083 ↗
12. Defective TiO2 with oxygen vacancies: synthesis, properties and photocatalytic applications10.1039/c3nr00476g ↗
13. Bulk oxygen vacancies enriched TiO2 and its enhanced visible photocatalytic performance10.1016/j.apsusc.2018.01.308 ↗
14. Black titanium dioxide (TiO2) nanomaterials10.1039/C4CS00330F ↗
15. Photocatalytic oxidation of acetone over high thermally stable TiO2 nanosheets with exposed (001) facets10.3389/fchem.2018.00175 ↗
16. Small Au and Pt clusters at the anatase TiO2(101) surface: behavior at terraces, steps, and surface oxygen vacancies10.1021/ja0773148 ↗
17. Increasing oxide reducibility: the role of metal/oxide interfaces in the formation of oxygen vacancies10.1021/acscatal.7b01913 ↗
18. Defect-mediated growth of noble-metal (Ag, Pt, and Pd) nanoparticles on TiO2 with oxygen vacancies for photocatalytic redox reactions under visible light10.1021/jp4064802 ↗
19. Thermally stable single-atomplatinum-on-ceria catalystsvia atom trapping10.1126/science.aaf8800 ↗
20. Is surface fluorination of TiO2 effective for water purification? The degradation vs. mineralization of phenolic pollutants10.1016/j.cattod.2016.03.010 ↗
21. Synergetic effects in novel hydrogenated F-doped TiO2 photocatalysts10.1016/j.apsusc.2016.02.172 ↗
22. Hydrothermal synthesis of fluorinated anatase TiO2/reduced graphene oxide nanocomposites and their photocatalytic degradation of bisphenol A10.1016/j.apsusc.2015.06.150 ↗
23. Enhanced photocatalytic CO2 valorization over TiO2 hollow microspheres by synergetic surface tailoring and Au decoration10.1039/C8TA09661A ↗
24. Effect of calcination temperature on morphology and photocatalytic activity of anatase TiO2 nanosheets with exposed {001} facets10.1016/j.apcatb.2011.03.019 ↗
25. Highly photoreactive TiO2 hollow microspheres with super thermal stability for acetone oxidation10.1016/S1872-2067(17)62952-8 ↗
26. Photoinduced charge transfer processes in solar photocatalysis based on modified TiO210.1039/C5EE02575C ↗
27. Dual-components modified TiO2 with Pt and fluoride as deactivation-resistant photocatalyst for the degradation of volatile organic compound10.1016/j.apcatb.2017.08.036 ↗
28. Hydrogen producing water treatment through solar photocatalysis10.1039/c003858j ↗
29. Simultaneous production of hydrogen with the degradation of organic pollutants using TiO2 photocatalyst modified with dual surface components10.1039/c2ee21310a ↗
30. Dual-functional photocatalysis using a ternary hybrid of TiO2 modified with graphene oxide along with Pt and fluoride for H2-producing water treatment10.1016/j.jcat.2015.07.007 ↗
31. TiO2 with “fluorine-occupied” surface oxygen vacancies and its stably enhanced photocatalytic performance10.1002/cctc.201500259 ↗
32. A brown mesoporous TiO2-x/MCF composite with an extremely high quantum yield of solar energy photocatalysis for H2 evolution10.1002/smll.201403056 ↗
33. Promoting catalytic oxygen activation via localised surface plasmon resonance: effect of visible light pre-treatment and bimetallic interaction10.1002/cctc.201701238 ↗
34. Pt–Ru bimetal alloy loaded TiO2 photocatalyst and its enhanced photocatalytic performance for CO oxidation10.1021/acs.jpcc.5b12251 ↗
35. Metal redispersion strategies for recycling of supported metal catalysts: a perspective10.1021/acscatal.5b00535 ↗
36. Modulation of the reduction potential of TiO2–x by fluorination for efficient and selective CH4 generation from CO2 photoreduction10.1021/acs.nanolett.8b00197 ↗
37. Electron spectroscopy of platinum-oxygen surfaces and application to electrochemical studies10.1021/ja00752a065 ↗
38. Single atom (Pd/Pt) supported on graphitic carbon nitride as an efficient photocatalyst for visible-light reduction of carbon dioxide10.1021/jacs.6b02692 ↗
39. Plasmon-driven selective oxidation of aromatic alcohols to aldehydes in water with recyclable Pt/TiO2 nanocomposites10.1002/cctc.201000303 ↗
40. Enhancing the catalytic oxidation capacity of Pt/TiO2 using a light pre-treatment approach10.1016/j.apcatb.2014.08.042 ↗
41. Single-atom Pt as co-catalyst for enhanced photocatalytic H2 evolution10.1002/adma.201505281 ↗
42. Nature of visible-light responsive fluorinated titanium dioxides10.1039/c3ta12506h ↗
43. Is the band gap of pristine TiO2 narrowed by anion- and cation-doping of titanium dioxide in second-generation photocatalysts10.1021/jp065659r ↗
44. Synergetic enhancement of light harvesting and charge separation over surface-disorder-engineered TiO2 photonic crystals10.1016/j.chempr.2017.05.006 ↗
45. Deactivation and regeneration of Pt/TiO2 nanosheet-type catalysts with exposed (001) facets for room temperature oxidation of formaldehyde10.1016/j.molcata.2014.02.033 ↗