Synthesis of titania wrapped cadmium sulfide nanorods for photocatalytic hydrogen generation
Source abstract
Abstract
Abstract Herein we report a simplified synthetic approach for a semiconductor photocatalyst (CdS) wrapped with a nanoscale thin-layer of semiconducting material (TiO2) to overcome the instability issues, besides the improved catalytic efficiency. Images of HR-TEM and elemental mapping evidenced the presence of CdS that covered by ultra thin-layer of TiO2 as shell. The UV–vis diffuse reflectance spectra showed red-shift in absorption edge in visible region. The photocatalytic water splitting towards hydrogen production using Na2S/Na2SO4 as sacrificial agent was evaluated under UV–vis and visible light irradiation. The essential variables such as thickness of TiO2 shell, amount of sacrificial agent and solution pH were fine tuned to achieve hydrogen generation of 5791 mL h−1 g−1 of catalyst. The higher efficiency is ascribed to core/shell morphology of CdS/TiO2 system that channelled the excitons to the surface for the red-ox reactions rather than recombination. The catalytic stability result ascertained that the photo-corrosion is greatly suppressed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (75)
Show source-provided references
1. Hierarchical electro spun nanofibers for energy harvesting, production and environmental remediation10.1039/C4EE00612G ↗
2. Heterogeneous photocatalyst materials for water splitting10.1039/B800489G ↗
3. Artificial photosynthesis: molecular systems for catalytic water oxidation10.1021/cr400572f ↗
4. Titanium dioxide-based nano-materials for photocatalytic fuel generations10.1021/cr500008u ↗
5. Earth-abundant co-catalysts for semiconductor based photocatalytic water splitting10.1039/C3CS60425J ↗
6. Preparation of the TiO2/graphic carbon nitride core–shell array as a photo-anode for efficient photo-electrochemical water splitting10.1021/acs.langmuir.6b03107 ↗
7. TiO2 Photocatalysis: a historical overview and future prospects10.1143/JJAP.44.8269 ↗
8. Facile preparation and improved photocatalytic H2-production of Pt-decorated CdS/TiO2 nanorods10.1016/j.materresbull.2013.12.002 ↗
9. TiO2 nanoparticles as functional building blocks10.1021/cr400629p ↗
10. Fe and Ni co-doped TiO2 nanoparticles prepared by alcohol-thermal method: application in hydrogen evolution by water splitting under visible light irradiation10.1016/j.cej.2013.04.065 ↗
11. Cu-doped TiO2 systems with improved photocatalytic activity10.1016/j.apcatb.2006.03.019 ↗
12. Fast one-step synthesis of N-doped carbon dots by pyrolyzing ethanolamine10.1039/C4TC01139B ↗
13. Cu2O-sensitized TiO2 nanorods with nano-cavities for highly efficient photocatalytic hydrogen production under solar irradiation10.1016/j.solmat.2015.01.009 ↗
14. Cu2ZnSnS4-Ag2S nanoscale p-n heterostructures as sensitizers for photo electrochemical water splitting10.1021/acs.langmuir.5b02490 ↗
15. Nano-textured pillars of electro sprayed bismuth vanadate for efficient photo electrochemical water splitting10.1021/acs.langmuir.5b00486 ↗
16. Nitrogen doped TiO2 for hydrogen production under visible light irradiation10.1016/j.solener.2011.10.029 ↗
17. Nanostructured carbon–metal oxide composite electrodes for super-capacitors: a review10.1039/C2NR32040A ↗
18. Preparation and enhanced visible-light photocatalytic H2-production activity of graphene/C3N4 composites10.1021/jp200953k ↗
19. Photocatalytic hydrogen production with visible light over Pt-interlinked hybrid composites of cubic-phase and hexagonal-phase CdS10.1021/jp8037279 ↗
20. Visible light-driven CdSe nanotube array photocatalyst10.1186/1556-276X-8-230 ↗
21. Protonated titanates and TiO2 nanostructured materials: synthesis, properties and applications10.1002/adma.200502696 ↗
22. Electrochemical synthesis of coaxial TiO2–Ag nanowires and their application in photocatalytic water splitting10.1039/C3TA14551D ↗
23. Stable and active CuxO/TiO2 nano-structured catalyst for proficient hydrogen production under solar light irradiation10.1016/j.solmat.2015.11.030 ↗
24. Multifunctional Cu/Ag quantum dots on TiO2 nanotubes as highly efficient photocatalysts for enhanced solar hydrogen evolution10.1016/j.jcat.2017.02.032 ↗
25. Fast and low-cost synthesis of 1D ZnO–TiO2 core–shell nano-arrays characterization and enhanced photo-electrochemical performance for water splitting10.1016/j.jallcom.2014.02.010 ↗
26. Design of hybrid nanostructures for advanced photocatalysis10.1002/aenm.201200511 ↗
27. Fabrication of MgFe2O4/MoS2 hetero-structure nanowires for photo-electrochemical catalysis
28. Shape dependence structural, optical and photocatalytic properties of TiO2 nanocrystals for enhanced hydrogen production via glycerol reforming10.1016/j.solmat.2017.01.007 ↗
29. Heterostructured semiconductor nano-wire arrays for artificial photosynthesis10.1039/C6MH00063K ↗
30. Achieving enhanced visible-light-driven photocatalysis using Type-II NaNbO3/CdS Core/shell Heterostructures10.1021/am503055n ↗
31. CdS–mesoporous ZnS core–shell particles for efficient and stable photocatalytic hydrogen evolution under visible light10.1039/c3ee43750g ↗
32. Enhanced photo induced-stability and photocatalytic activity of CdS by dual amorphous cocatalysts: synergistic effect of Ti(IV)-hole cocatalyst and Ni(II)-electron cocatalyst10.1021/acs.jpcc.6b00126 ↗
33. Synthesis of one-dimensional CdS@TiO2 core-shell nanocomposites photocatalyst for selective redox: the dual role of TiO2 shell10.1021/am302074p ↗
34. One dimensional CdS nanowire@TiO2 nanoparticles core-shell as high performance photocatalyst for fast degradation of dye pollutants under visible and sunlight irradiation10.1016/j.jcis.2016.06.036 ↗
35. Ultrathin TiO2 layer coated-CdS spheres core-shell nano-composite with enhanced visible-light photo activity10.1021/am4043068 ↗
36. Effects of the preparation method of the ternary CdS/TiO2/Pt hybrid photocatalysts on visible light-induced hydrogen production10.1039/b718759a ↗
37. Optical properties of the type-II core-shell TiO2@CdS nanorods for photovoltaic applications10.1021/jp8083953 ↗
38. Sono-synthesis of core–shell nano-crystal (CdS/TiO2) without surfactant10.1016/j.ultsonch.2012.01.009 ↗
39. Shell-thickness dependent electron transfer and relaxation in type-II core-shell CdS/TiO2 structures with optimized photo-electrochemical performance10.1039/C5TA07100C ↗
40. Core/shell photocatalyst with spatially separated co-catalysts for efficient reduction and oxidation of water
41. Photocatalytic hydrogen production using Fe2O3-based core shell nano particles with ZnS and CdS10.1016/j.ijhydene.2013.11.029 ↗
42. Ni(OH)2 modified CdS nanorods for highly efficient visible-light-driven photocatalytic H2 generation10.1039/c1gc15465f ↗
43. Hierarchical core-shell carbon nanober@ZnIn2S4 composites for enhanced hydrogen evolution performance10.1021/am5032083 ↗
44. Synthesis of In2O3–In2S3 core–shell nanorods with inverted type-I structure for photocatalytic H2 generation10.1039/c3cp51722e ↗
45. Composition-tuned ZnO/ZnxCd1−xTe core/shell nanowires array with broad spectral absorption from UV to NIR for hydrogen generation10.1021/am4054332 ↗
46. Synthesis of ZnO@ZnS–Bi2S3 core–shell nanorod grown on reduced Graphene oxide sheets and its enhanced photocatalytic performance10.1039/C4TA00696H ↗
47. ZnO/ZnS–PdS core/shell nanorods: synthesis, characterization and application for photocatalytic hydrogen production from a glycerol/water solution10.1016/j.apsusc.2013.07.009 ↗
48. Controlled growth from ZnS nanoparticles to ZnS–CdS nano-particle hybrids with enhanced photo-activity
49. Stable photocatalytic hydrogen evolution from water over ZnO–CdS core–shell nanorods10.1016/j.ijhydene.2009.12.091 ↗
50. Effective shuttling of photo-excitons on CdS/NiO core/shell photocatalysts for enhanced photocatalytic hydrogen production10.1016/j.materresbull.2018.01.043 ↗
51. Recent progress on metal core @ semiconductor shell nano-composites as a promising type of photocatalyst10.1039/c2nr00009a ↗
52. Core/shell nanoparticles: classes, properties, synthesis mechanisms, characterization and applications10.1021/cr100449n ↗
53. core/shell semiconductor nano-crystals10.1002/smll.200800841 ↗
54. TiO2@CdSe/CdS core–shell hollow nano-spheres solar paint10.1039/C4RA03845B ↗
55. Core-shell structural CdS@SnO2 nanorods with excellent visible-light photocatalytic activity for the selective oxidation of benzyl alcohol to benzaldehyde
56. CdS@TiO2 and ZnS@TiO2 core–shell nano-composites: synthesis and optical properties10.1016/j.colsurfa.2010.04.030 ↗
57. Nano-size effects on CuO/TiO2 catalysts for highly efficient H2 production under solar light irradiation10.1039/c3cc44742a ↗
58. Undesired role of sacrificial reagents in photocatalysis10.1021/jz4018199 ↗
59. A review and recent developments in photocatalytic water-splitting using TiO2 for hydrogen production10.1016/j.rser.2005.01.009 ↗
60. Cobalt doped TiO2: a stable and efficient photocatalyst for continuous hydrogen production from glycerol: water mixtures under solar light irradiation10.1016/j.ijhydene.2013.05.116 ↗
61. Influence of initial pH on hydrogen production from cheese whey10.1016/j.jbiotec.2005.05.017 ↗
62. Photochemical hydrogen production with cadmium sulfide suspensions10.1021/j150659a025 ↗
63. One-dimensional CdS/TiO2 nanofibers composites as efficient visible-light-driven photocatalysts for selective organic transformation: synthesis, characterization and performance10.1021/la503731y ↗
64. Sono-chemistry synthesis of nano-crystals embedded in a MoO3–CdS core–shell photocatalyst with enhanced hydrogen production and photo-degradation10.1039/c2jm33432a ↗
65. New insight into the role of gold nanoparticles in Au@CdS core-shell nanostructures for hydrogen evolution10.1002/smll.201401494 ↗
66. Efficient visible-light photocatalytic hydrogen evolution and enhanced photo-stability of core/shell CdS/g-C3N4nanowires10.1021/am403327g ↗
67. One-dimensional CdS/ZnO core/shell nanofibers via single-spinneret electro spinning: tunable morphology and efficient photocatalytic hydrogen production10.1039/c3nr03462c ↗
68. Highly dispersed noble-metal/chromia (core/shell) nanoparticles as efficient hydrogen evolution promoters for photocatalytic overall water splitting under visible light10.1039/b9nr00186g ↗
69. Synthesis of M@TiO2 (M = Au, Pd, Pt) core-shell nanocomposites with tunable photoreactivity10.1021/jp2009989 ↗
70. The surface acidity of hydrous CdS(s)10.1016/0021-9797(87)90403-6 ↗
71. Point of zero charge and surface charge density of TiO2 in aqueous electrolyte solution as obtained by potentiometric mass titration, Croatica
72. Point of zero charge estimation for a TiO2/water interface10.1007/BFb0118041 ↗
73. Self-templated synthesis of nano-porous CdS nanostructures for highly efficient photocatalytic hydrogen production under visible light10.1021/cm7029344 ↗
74. Efficient electron transfer across a ZnO–MoS2–reduced graphene oxide hetero-junction for enhanced sunlight-driven photocatalytic hydrogen evolution10.1002/cssc.201701024 ↗
75. One-step fabrication of CdS nano-particle sensitized TiO2nanotube arrays via electro-deposition10.1021/jp2078117 ↗