Gradient band alignment of N-doped titania nanosheets on TiO2 nanorod arrays for improved solar water oxidation
Source abstract
Abstract
TiO 2 is a typical semiconducting material for photoelectrochemical (PEC) hydrogen generation, but still suffers from poor light capturing capability and slow surface water oxidation kinetics. Herein, a homologous heterojunction has been designed and fabricated based on TiO 2 nanorod arrays (NAs) and N-doped titania (Ti 0.91O 2−xN x ) nanosheets (TON NSs). Owing to the narrower band gap, TON broadens light absorption range and enhances absorption intensity. More importantly, the employment of TON for interfacial modulation could accelerate the surface water splitting kinetics due to the gradient band alignment of TON/TiO 2 . The upshifted valence band could better drive the holes to travel across the surface of photoanode for water oxidation reaction. Consequently, the optimal TON/TiO 2 photoanode has achieved a significantly improved photocurrent of 1.62 mA/cm 2 at 1.23 V vs RHE, which is 2.45 times of that of TiO 2. This work provides an effective strategy for the design and construction of homologous heterojunctions for energy catalytic reactions.
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Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (71)
Show source-provided references
1. Sequential phase conversion-induced phosphides heteronanorod arrays for superior hydrogen evolution performance to Pt in wide pH media10.1002/adma.202107548 ↗
2. Orderly decoupled dynamics modulation in nanoporous BiVO4 photoanodes for solar water splitting10.1016/j.jallcom.2022.167428 ↗
3. Recent topics in photoelectrochemistry: achievements and future prospects10.1016/S0013-4686(00)00337-6 ↗
4. Co/CoP heterojunction on hierarchically ordered porous carbon as a highly efficient electrocatalyst for hydrogen and oxygen evolution10.1002/aenm.202102134 ↗
5. A. Fujishima, Electrochemical photolysis of water at a semiconductor electrode, Nature 238 (1972) 37–38, https://doi.org/DOI: 10.1038/238037a0.10.1038/238037a0 ↗
6. Synergistic effect of bi-phased and self-doped Ti+3 on anodic TiO2 nanotubes photoelectrode for photoelectrochemical sensing10.1016/j.jallcom.2021.163496 ↗
7. Synergistic effect of Si doping and heat treatments enhances the photoelectrochemical water oxidation performance of TiO2 nanorod arrays10.1002/adfm.201701575 ↗
8. Versatile TiO2 bandgap modification with metal, non-metal, noble metal, carbon material, and semiconductor for the photoelectrochemical water splitting and photocatalytic dye degradation performance
9. Hydrogen-treated TiO2 nanowire arrays for photoelectrochemical water splitting10.1021/nl201766h ↗
10. Construction of Z-scheme TiO2/Ag/ZIF-8 nanorod array film with boosting photocatalytic and photoelectrochemical properties10.1016/j.jallcom.2022.167680 ↗
11. Photoanodes based on TiO2 and α-Fe2O3 for solar water splitting-superior role of 1d nanoarchitectures and of combined heterostructures10.1039/C6CS00015K ↗
12. Enhanced photoelectrochemical water-splitting performance of semiconductors by surface passivation layers10.1039/C4EE00450G ↗
13. Thermal vapor condensation of uniform graphitic carbon nitride films with remarkable photocurrent density for photoelectrochemical applications10.1016/j.nanoen.2015.04.012 ↗
14. Solar cells by design: photoelectrochemistry of TiO2 nanorod arrays decorated with CdSe10.1002/adfm.200902234 ↗
15. FeOOH interlayer with storing holes applied to construct WO3/FeOOH/Cu2O ternary heterojunction photoanode with dual built-in electric filed for efficient PEC cell10.1016/j.jallcom.2022.165496 ↗
16. Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting10.1039/C3CS60425J ↗
17. A three-dimensional branched TiO2 photoanode with an ultrathin Al2O3 passivation layer and a NiOOH cocatalyst toward photoelectrochemical water oxidation10.1021/acsami.1c00948 ↗
18. The way forward for the modification of dye-sensitized solar cell towards better power conversion efficiency10.1016/j.rser.2017.02.063 ↗
19. Photoelectrocatalytic H2 evolution enhancement over CuO-decorated TiO2 nanocatalysts and promoting E
20. S-scheme heterojunction photocatalyst10.1016/j.chempr.2020.06.010 ↗
21. Structural analysis of iron oxide coated n-silicon heterojunction photoanodes10.1016/0013-4686(84)87012-7 ↗
22. Construction and photoelectrocatalytic performance of TiO2/BiVO4 heterojunction modified with cobalt phosphate10.1016/j.jallcom.2019.153225 ↗
23. Photoelectrochemical behavior of iron oxide/n-Si heterojunction electrodes with an outer pd layer10.1149/1.2115911 ↗
24. Heterojunction photocatalysts10.1002/adma.201601694 ↗
25. Construction of a TiO2 heterostructure nanowire with a sulfurized shell via a simple sulfurization process for enhanced photoelectrochemical water oxidation10.1016/j.jallcom.2020.158375 ↗
26. Heterojunction between bimetallic metal-organic framework and TiO2: band-structure engineering for effective photoelectrochemical water splitting10.1007/s12274-022-4451-y ↗
27. Bird-nest structured Zno/TiO2 as a direct Z-scheme photoanode with enhanced light harvesting and carriers kinetics for highly efficient and stable photoelectrochemical water splitting10.1016/j.apcatb.2020.118599 ↗
28. Hydrothermally obtained type-II heterojunction nanostructures of In2S3 /TiO2 for remarkably enhanced photoelectrochemical water splitting10.1016/j.apcatb.2021.120276 ↗
29. Wedged β-In2S3 sensitized TiO2 films for enhanced photoelectrochemical hydrogen generation10.1016/j.jallcom.2020.154798 ↗
30. Fabrication of a stable light-activated and p/n type AgVO3/V2O5-TiO2 heterojunction for pollutants removal and photoelectrochemical water splitting10.1016/j.jallcom.2021.162500 ↗
31. Solar to chemical energy conversion using titania nanorod photoanodes augmented by size distribution of plasmonic au-nanoparticle10.1016/j.matchemphys.2019.04.025 ↗
32. Macromolecule-like aspects for a colloidal suspension of an exfoliated titanate. Pairwise association of nanosheets and dynamic reassembling process initiated from it10.1021/ja960073b ↗
33. Nitrogen-doped titania nanosheets towards visible light response10.1039/b820483g ↗
34. Photoinduced semiconductor-metal transition in ultrathin troilite FeS nanosheets to trigger efficient hydrogen evolution
35. A dual-ligand strategy to regulate the nucleation and growth of lead chromate photoanodes for photoelectrochemical water splitting10.1002/adma.202110610 ↗
36. Facilitating hole transfer on electrochemically synthesized p-type CuAlO2 films for efficient solar hydrogen production from water10.1039/C7TA01919J ↗
37. Single-step preparation of large area TiO2 photoelectrodes for water splitting10.1002/aenm.202000652 ↗
38. Radially oriented mesoporous TiO2 microspheres with single-crystal-like anatase walls for high-efficiency optoelectronic devices10.1126/sciadv.1500166 ↗
39. Colloidal carbon quantum dots as light absorber for efficient and stable ecofriendly photoelectrochemical hydrogen generation10.1016/j.nanoen.2021.106122 ↗
40. Microsphere assembly of TiO2 mesoporous nanosheets with highly exposed (101) facets and application in a light-trapping quasi-solid-state dye-sensitized solar cell10.1039/C4NR06865C ↗
41. Highly enhanced photoelectrocatalytic properties by α-Fe2O3 modified NF-TiO2 pyramids with dominant (101) facets10.1016/j.electacta.2016.09.025 ↗
42. Unusual crystallization behaviors of anatase nanocrystallites from a molecularly thin titania nanosheet and its stacked forms: increase in nucleation temperature and oriented growth10.1021/ja0668116 ↗
43. Selective electrocatalytic water oxidation to produce H2O2 using a C, N Codoped TiO2 electrode in an acidic electrolyte10.1021/acsami.9b16937 ↗
44. Boosting charge transport in BiVO4 photoanode for solar water oxidation10.1002/adma.202108178 ↗
45. Metal-organic framework derived narrow bandgap cobalt carbide sensitized titanium dioxide nanocage for superior photo-electrochemical water oxidation performance10.1002/adfm.201706154 ↗
46. 3d ordered urchin-like TiO2@Fe2O3 arrays photoanode for efficient photoelectrochemical water splitting10.1016/j.apsusc.2018.11.184 ↗
47. Organic-inorganic hybrid-photoanode built from NiFe-MOF and TiO2 for efficient PEC water splitting10.1016/j.electacta.2020.136383 ↗
48. Enhanced photoelectrochemical water-splitting property on TiO2 nanotubes by surface chemical modification and wettability control10.1021/acsami.0c03051 ↗
49. Self-assembled CoOOH on TiO2 for enhanced photoelectrochemical water oxidation10.1016/j.jechem.2020.11.038 ↗
50. Effect of defect-rich Co-CeOx OER cocatalyst on the photocarrier dynamics and electronic structure of Sb-doped TiO2 nanorods photoanode10.1016/j.jcis.2022.04.007 ↗
51. Non-noble plasmonic MoO2 as photosensitizer of 1d TiO2 nanorods for enhancing visible-light photoelectrochemical performance
52. Increasing solar absorption for photocatalysis with black hydrogenated titanium dioxide nanocrystals10.1126/science.1200448 ↗
53. Properties of disorder-engineered black titanium dioxide nanoparticles through hydrogenation
54. Excellent visible light responsive photocatalytic behavior of N-doped TiO2 toward decontamination of organic pollutants10.1016/j.jhazmat.2020.123857 ↗
55. Influence of nitrogen doping on the defect formation and surface properties of TiO2 rutile and anatase10.1103/PhysRevLett.96.026103 ↗
56. Visible-light-driven prompt and quantitative production of lactic acid from biomass sugars over a N-TiO2 photothermal catalyst10.1039/D1GC03057D ↗
57. Multiple-homojunction gradient nitrogen doped TiO2 for photocatalytic degradation of sulfamethoxazole, degradation mechanism, and toxicity assessment10.1016/j.cej.2021.130507 ↗
58. A red anatase TiO2 photocatalyst for solar energy conversion10.1039/c2ee22930g ↗
59. High-rate lithium storage of anatase TiO2 crystals doped with both nitrogen and sulfur10.1039/c3cc40568k ↗
60. Novel black BiVO4/ TiO2−X photoanode with enhanced photon absorption and charge separation for efficient and stable solar water splitting10.1002/aenm.201901287 ↗
61. Hydrogen plasma reduced black TiO2B nanowires for enhanced photoelectrochemical water-splitting10.1016/j.jpowsour.2016.06.074 ↗
62. Interfacial nitrogen modulated Z-scheme photoanode for solar water oxidation10.1016/j.jpowsour.2021.230784 ↗
63. Interface modulation of BiVO4 based photoanode with Bi(iii)Bi(V)O4 for enhanced solar water splitting10.1016/j.jcat.2020.09.012 ↗
64. Nitrogen-incorporation activates NiFeOx catalysts for efficiently boosting oxygen evolution activity and stability of BiVO4 photoanodes10.1038/s41467-021-27299-0 ↗
65. Dual oxygen and tungsten vacancies on a WO3 photoanode for enhanced water oxidation10.1002/anie.201605247 ↗
66. Effect of aspect ratio and surface defects on the photocatalytic activity of ZnO nanorods
67. Carbon dots enhance the interface electron transfer and photoelectrochemical kinetics in TiO2 photoanode10.1016/j.apcatb.2021.120983 ↗
68. Facile synthesis of composition-tuned Zno/ZnxCd1−x Se nanowires for photovoltaic applications10.1186/s11671-015-0886-3 ↗
69. Enhanced photoelectrochemical performance of MOS2 nanobelts-loaded TiO2 nanotube arrays by photo-assisted electrodeposition10.1016/j.apsusc.2017.06.297 ↗
70. Photophysical and photocatalytic properties of AgInW2O810.1021/jp0359891 ↗
71. Photoelectrochemical performance of CdS nanorods grafted vertically aligned TiO2 nanorods10.1016/j.materresbull.2013.07.011 ↗