Optimal engineering of CdS/PbS co-sensitized TiO2 nanotube arrays for enhanced photoelectrochemical performance
Source abstract
Abstract
Abstract TiO2 nanotube arrays (NTAs) are decorated with CdS/PbS nano-sensitizers by successive ionic layer adsorption and reaction (SILAR) method. The uniform growth of the CdS and PbS nanoparticles on the surface and inner side of TiO2 Nanotube Arrays (NTAs) has been confirmed by Transmission Electron microscopy measurements. The impact of the CdS and PbS semiconductor quantum dots (SQDs) on the photoelectrochemical performance (PEC) of TiO2 NTAs was systematically investigated, and the optimal decoration of the CdS and PbS SQDs on the TiO2 NTAs was obtained. CdS/PbS co-sensitized TiO2 NTA photoanode films show excellent response to visible light (with absorption extended to 825 nm) and enhanced PEC performance. The best performing device showed an enhanced photocurrent density under the 0.62V vs SCE up to 8.2 mA/cm2, and high photoconversion efficiency up to 5.35%, which is 16.7 times higher than the pure TiO2 NTAs. The enhanced PEC performance of TiO2 NTAs is attributed to the co-sensitization, heterojunction formation and electron “pool” effect imparted on the NTAs by the coupling of CdS and PbS SQDs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · TiO2 Photocatalysis and Solar Cells · Quantum Dots Synthesis And Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Ag doped hollow TiO2 nanoparticles as an effective green fungicide against Fusarium solani and Venturia inaequalis phytopathogens
2. Nanocrystalline TiO2/SnO2heterostructures for gas sensing10.3762/bjnano.8.12 ↗
3. Enhanced photoelectrochemical performance of multi-leg TiO2 nanotubes through efficient light harvesting10.1088/0022-3727/48/29/295302 ↗
4. Easy synthesis of TiO2/g-C3N4 heterostructure photocatalyst with large surface area and excellent photocatalytic activity10.1016/j.ceramint.2017.05.243 ↗
5. Photosensitization of TiO2 by Ag2S and its catalytic activity on phenol photodegradation10.1016/j.jphotochem.2009.03.014 ↗
6. RGO/Ag 2 S/TiO 2 ternary heterojunctions with highly enhanced UV-NIR photocatalytic activity and stability10.1016/j.apcatb.2016.12.011 ↗
7. High-efficiency electrode based on nitrogen-doped TiO 2 nanofibers for dye-sensitized solar cells10.1016/j.electacta.2013.10.212 ↗
8. Mechanism of strong visible light photocatalysis by Ag2O-nanoparticle-decorated monoclinic TiO2(B) porous nanorods10.1088/0957-4484/27/31/315703 ↗
9. Photoelectrochemical characterization of dual-layered anodic TiO2 nanotubes with honeycomb morphology10.1088/1361-6463/50/3/035502 ↗
10. Photocatalyic activity of double pore structure TiO2/SiO2 monoliths
11. Ag-bridged Ag2O nanowire network/TiO2 nanotube array p-n heterojunction as a highly efficient and stable visible light photocatalyst10.1016/j.jhazmat.2014.12.020 ↗
12. A highly efficient ZnS/CdS@TiO2 photoelectrode for photogenerated cathodic protection of metals10.1016/j.electacta.2010.08.017 ↗
13. Effect of oxygen-doped C3N4 on the separation capability of the photoinduced electron-hole pairs generated by O-C3N4@TiO2 with quasi-shell-core nanostructure10.1016/j.electacta.2014.08.095 ↗
14. Facile surface treatment on Cu2O photocathodes for enhancing the photoelectrochemical response10.1016/j.apcatb.2016.06.010 ↗
15. Self-organized TiO2 nanotubular arrays for photoelectrochemical hydrogen generation: effect of crystallization and defect structures10.1088/0022-3727/41/12/125307 ↗
16. A photoelectrochemical study of CdS modified TiO 2 nanotube arrays as photoanodes for cathodic protection of stainless steel10.1016/j.tsf.2011.03.116 ↗
17. Enhanced charge collection and photocatalysis performance of CdS and PbS nanoclusters co-sensitized TiO2 porous film10.1016/j.jallcom.2015.07.145 ↗
18. Design and development of novel linker for PbS quantum dots/TiO₂ mesoscopic solar cell10.1021/am200811c ↗
19. Bactericidal effect of energy storage TiO2–WO3” photocatalysis in dark10.1016/j.elecom.2003.07.003 ↗
20. All-solid-state quantum-dot-sensitized solar cells with compact PbS quantum-dot thin films and TiO 2 nanorod arrays10.1016/j.ceramint.2017.05.022 ↗
21. Photosensitization of TiO2 nanofibers by Ag2S with the synergistic effect of excess surface Ti3+ states for enhanced photocatalytic activity under simulated sunlight10.1038/s41598-017-00366-7 ↗
22. Solution processed CdS Quantum dots on TiO2: light induced electrochemical properties10.1039/C6RA14275C ↗
23. Highly efficient CdSe/CdS co-sensitized TiO 2 nanotube films for photocathodic protection of stainless steel10.1016/j.electacta.2012.07.120 ↗
24. Enhanced charge-carrier transfer by CdS and Ag2S quantum dots co-sensitization for TiO2 nanotube arrays10.1016/j.jcis.2015.06.038 ↗
25. Photocathodic protection of 304 stainless steel by Bi 2 S 3/TiO 2 nanotube films under visible light10.1186/s11671-017-1863-9 ↗
26. Cadmium sulfide/lead sulfide co-sensitized TiO2 enhances photoelectrochemical performance and corrosion resistance of 304 stainless steel10.1557/mrc.2019.151 ↗
27. Transparent CdS@TiO2 nanotextile photoanode with boosted photoelectrocatalytic efficiency and stability
28. Dong · 2017
29. Electron injection from colloidal PbS quantum dots into titanium dioxide nanoparticles10.1021/nn800336b ↗
30. CdS/CdSe Co-sensitized TiO 2 photoelectrode for efficient hydrogen generation in a photoelectrochemical cell †10.1021/cm901762h ↗
31. Synthesis and characterization of P-doped TiO 2 nanotubes10.1016/j.tsf.2009.06.051 ↗
32. Thin carbon layer coated Ti -TiO nanocrystallites for visible-light driven photocatalysis10.1039/C5NR00032G ↗
33. Surface photovoltage study of photogenerated charges in ZnO nanorods array grown on ITO10.1016/j.cplett.2006.11.103 ↗
34. Thin carbon layer coated Ti(3+)-TiO2 nanocrystallites for visible-light driven photocatalysis10.1039/C5NR00032G ↗
35. Kelvin probe force microscopy study of a Pt/TiO2 catalyst model placed in an atmospheric pressure of N2 environment10.1002/asia.201101001 ↗
36. Engineering oxygen vacancy on rutile TiO2 for efficient electron-hole separation and high solar-driven photocatalytic hydrogen evolution
37. Photoelectrochemical response and corrosion behavior of CdS/TiO2 nanocomposite films in an aerated 0.5 M NaCl solution10.1016/j.apsusc.2017.05.093 ↗
38. Enhanced solar light photoelectrocatalytic activity in water by anatase-to-rutile TiO2 transformation
39. Solvothermal fabrication and construction of highly photoelectrocatalytic TiO2 NTs/Bi2MoO6 heterojunction based on titanium mesh10.1016/j.jcis.2019.08.038 ↗
40. Enhanced photocatalytic performance of TiO2 NTs decorated with chrysanthemum-like BiOI nanoflowers10.1016/j.seppur.2019.01.046 ↗
41. SILAR deposition of CuO nanosheets on the TiO2 nanotube arrays for the high performance solar cells and photocatalysts10.1016/j.seppur.2018.07.057 ↗
42. Ultrasound-assisted successive ionic layer adsorption and reaction synthesis of Cu2O cubes sensitized TiO2 nanotube arrays for the enhanced photoelectrochemical performance10.1016/j.materresbull.2018.11.021 ↗
43. Morphology regulated Bi2WO6 nanoparticles on TiO2 nanotubes by solvothermal Sb3þ doping as effective photocatalysts for wastewater treatment10.1016/j.electacta.2019.135167 ↗
44. Carrier lifetimes of> 1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells10.1126/science.aav7911 ↗
45. Boosting the efficiency of quantum dot sensitized solar cells through modulation of interfacial charge transfer10.1021/ar200315d ↗