Bismuth oxide cocatalyst and copper oxide sensitizer in Cu2O/TiO2/Bi2O3 ternary photocatalyst for efficient hydrogen production under solar light irradiation
Source abstract
Abstract
Abstract A novel Cu 2 O/TiO 2 /Bi 2 O 3 ternary nanocomposite was prepared, in which copper oxide improves the visible light absorption of TiO 2 and bismuth oxide improves electron–hole separation. The ternary composite exhibited extended absorption in the visible region, as determined by UV–Vis diffuse reflectance spectroscopy. High-resolution transmission electron microscopy images showed close contact among the individual semiconductor oxides in the ternary Cu 2 O/TiO 2 /Bi 2 O 3 nanocomposite. Improved charge carrier separation and transport were observed in the Cu 2 O/TiO 2 /Bi 2 O 3 ternary composite using electrochemical impedance spectroscopy and photocurrent analysis. TiO 2 modified with bismuth and copper oxides showed exceptional photocatalytic activity for hydrogen production under natural solar light. With optimum bismuth and copper oxide loadings, the Cu 2 O/TiO 2 /Bi 2 O 3 ternary nanocomposite exhibited an H 2 production (3678 μmol/h) 35 times higher than that of bare TiO 2 (105 μmol/h). The synergistic effect of improved visible absorption and minimal recombination was responsible for the enhanced performance of the as-synthesized ternary nanocomposite.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications · ZnO doping and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Energy supply, its demand and security issues for developed and emerging economies10.1016/j.rser.2005.12.004 ↗
2. Role of renewable energy sources in environmental protection: a review10.1016/j.rser.2010.11.037 ↗
3. Political, economic and environmental impacts of biomass-based hydrogen10.1016/j.ijhydene.2009.02.067 ↗
4. Potential of hydrogen from oil palm biomass as a source of renewable energy worldwide10.1016/j.enpol.2007.06.017 ↗
5. Hydrogen production from renewable sources: biomass and photocatalytic opportunities10.1039/B808138G ↗
6. Heterogeneous photocatalytic hydrogen production from water and biomass derivatives10.1039/c1ee01120k ↗
7. Semiconductor-based photocatalytic hydrogen generation10.1021/cr1001645 ↗
8. Recent advances in photocatalytic treatment of pollutants in aqueous media10.1016/j.envint.2016.02.012 ↗
9. CaFe2O4 sensitized hierarchical TiO2 photo composite for hydrogen production under solar light irradiation10.1016/j.cej.2014.02.076 ↗
10. Photocatalytic degradation of isoproturon pesticide on C, N and S doped TiO210.4236/jwarp.2010.23027 ↗
11. Preparation and characterization of Bi-doped TiO2 and its solar photocatalytic activity for the degradation of isoproturon herbicide10.1016/j.materresbull.2011.08.006 ↗
12. Solar photocatalytic degradation of the herbicide isoproturon on a Bi–TiO2/zeolite photocatalyst10.1080/02772248.2011.654120 ↗
13. Single-step hydrothermal synthesis of wrinkled graphene wrapped TiO2 nanotubes for photocatalytic hydrogen production and supercapacitor applications10.1016/j.materresbull.2017.10.034 ↗
14. Rare earth metal Gd influenced defect sites in N doped TiO2: defect mediated improved charge transfer for enhanced photocatalytic hydrogen production10.1016/j.ijhydene.2017.12.050 ↗
15. Novel approach for the synthesis of nitrogen-doped titania with variable phase composition and enhanced production of hydrogen under solar irradiation10.1016/j.jiec.2017.04.033 ↗
16. Photocatalytic hydrogen production from glycerol and water with NiOx/TiO2 catalysts10.1016/j.apcatb.2013.06.024 ↗
17. In-situ photo-reduction of silver particles and their SPR effect in enhancing the photocatalytic water splitting of Ag2O/TiO2 photocatalysts under solar light irradiation: a case study10.1016/j.materresbull.2017.08.028 ↗
18. Noble metal-free ultrathin MoS2 nanosheet-decorated CdS nanorods as an efficient photocatalyst for spectacular hydrogen evolution under solar light irradiation10.1039/C6TA08628D ↗
19. D.A. Reddy, H. Park, R. Ma, D.P. Kumar, M. Lim, T.K. Kim, Heterostructured WS2-MoS2 ultrathin nanosheets integrated on CdS nanorods to promote charge separation and migration and improve solar-driven photocatalytic hydrogen evolution, ChemSusChem, 10 (7), 1563–1570.10.1002/cssc.201601799 ↗
20. An overview on visible light responsive metal oxide based photocatalysts for hydrogen energy production10.1039/C5RA11682A ↗
21. Enhanced hydrogen production activity over BiOX-TiO2 under solar irradiation: improved charge transfer through bismuth oxide clusters10.1016/j.jechem.2016.12.007 ↗
22. Facile fabrication of Bi2O3/TiO2-xNx nanocomposites for excellent visible light driven photocatalytic hydrogen evolution10.1016/j.ijhydene.2010.11.104 ↗
23. Facile fabrication of Bi2O3/Bi–NaTaO3 photocatalysts for hydrogen generation under visible light irradiation10.1039/c2ra21083e ↗
24. Loading effect in copper(II) oxide cluster-surface-modified titanium(IV) oxide on visible- and UV-light activities10.1021/jp4085525 ↗
25. Highly aligned Cu2O/CuO/TiO2 core/shell nanowire arrays as photocathodes for water photoelectrolysis10.1039/C2TA00918H ↗
26. CuOx–TiO2 junction: what is the active component for photocatalytic H2 production?10.1039/c3cp52496e ↗
27. Heterojunction conception of n-La2Ti2O7/p-CuO in the limelight of photocatalytic formation of hydrogen under visible light10.1039/c3ra47037g ↗
28. Plasmonic resonance nature of Ag-Cu/TiO2 photocatalyst under solar and artificial light: synthesis, characterization and evaluation of H2O splitting activity10.1016/j.apcatb.2016.06.050 ↗
29. Multifunctional Cu/Ag quantum dots on TiO2 nanotubes as highly efficient photocatalysts for enhanced solar hydrogen evolution10.1016/j.jcat.2017.02.032 ↗
30. Controllable fabrication of Bi2O3/TiO2 heterojunction with excellent visible-light responsive photocatalytic performance10.1016/j.apsusc.2017.06.158 ↗
31. Hybrid CuxO/TiO2 nanocomposites as risk-reduction materials in indoor environments10.1021/nn2045888 ↗
32. Cu2O/Cu/TiO2 nanotube ohmic heterojunction arrays with enhanced photocatalytic hydrogen production activity10.1016/j.ijhydene.2012.01.075 ↗
33. Shallow and deep trap emission and luminescence quenching of TiO2 nanoparticles on Cu doping10.1007/s13204-013-0226-9 ↗
34. CuO/PbTiO3: a new-fangled p–n junction designed for the efficient absorption of visible light with augmented interfacial charge transfer, photoelectrochemical and photocatalytic activities10.1039/C7TA05206E ↗
35. K. Lalitha, G. Sadanandam, V. Durga Kumari, M. Subrahmanyam, B. Sreedhar, N.Y. Hebalkar, Highly stabilized and finely dispersed Cu2O/TiO2: a promising visible sensitive photocatalyst for continuous production of hydrogen from glycerol:water mixtures, J. Phys. Chem. C, 114 (50), 22181–22189.10.1021/jp107405u ↗
36. Investigation of the optical property and photocatalytic activity of mixed phase nanocrystalline titania10.1007/s13204-013-0264-3 ↗
37. Bi2O3/TiO2 coaxial nanorods: synthesis, characterization and photoluminescence properties10.1016/j.tsf.2010.03.157 ↗
38. First-principles characterization of Bi-based photocatalysts: Bi12TiO20, Bi2Ti2O7, and Bi4Ti3O1210.1021/jp810344e ↗
39. Cu2O-decorated mesoporous TiO2 beads as a highly efficient photocatalyst for hydrogen production10.1002/cctc.201300681 ↗
40. Cu2O clusters decorated on flower-like TiO2 nanorod array film for enhanced hydrogen production under solar light irradiation10.1016/j.jphotochem.2017.08.073 ↗
41. Bi2O3 quantum dots decorated anatase TiO2 nanocrystals with exposed {001} facets on graphene sheets for enhanced visible-light photocatalytic performance10.1016/j.apcatb.2012.09.009 ↗
42. Synthesis of Bi-doped TiO2 nanotubes and enhanced photo-catalytic activity for hydrogen evolution from glycerol solution10.1002/cjoc.201201151 ↗
43. Bi2O3 cocatalyst improving photocatalytic hydrogen evolution performance of TiO210.1016/j.apsusc.2016.12.171 ↗