Cu2O/TiO2 heterostructured hollow sphere with enhanced visible light photocatalytic activity
Source abstract
Abstract
Abstract The Cu2O/TiO2 heterostructured hollow spheres (Cu2O/TiO2HS) were successfully prepared. The developed Cu2O/TiO2 heterojunction material has a spherical hollow structure with diameters about 750–950 nm and shell thickness of 20–30 nm, on which the p-type Cu2O and n-type TiO2 nanoparticles are closely contacted with each other. The well designed heterojunction structure is beneficial for the charge separation in photocatalytic reaction. The UV–vis absorption spectra showed that the Cu2O/TiO2HS catalyst displayed a better ability for visible light absorption compared to the pure TiO2HS. The as prepared samples showed improved solar light and visible light induced photocatalytic activities by decomposing Rhodamine B. The greatly enhanced activity can be attributed to the well designed heterojunction and the hollow structure of TiO2HS, which can simultaneously enhance the charge separation efficiency and facilitate the Rhodamine B adsorption.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Copper-based nanomaterials and applications · Advanced Photocatalysis Techniques · Nanomaterials for catalytic reactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (30)
Show source-provided references
1. An overview of semiconductor photocatalysis10.1016/S1010-6030(97)00118-4 ↗
2. Hierarchical visible-light-response Ag/AgCl@TiO2 plasmonic photocatalysts for organic dye degradation10.1088/0957-4484/24/40/405706 ↗
3. Anatase TiO2 hollow microspheres with exposed {001} facets: facile synthesis and enhanced photocatalysis10.1016/j.apsusc.2012.02.117 ↗
4. Hierarchically porous NF codoped TiO2 hollow spheres prepared via an in situ bubbling method for dye-sensitized solar cells10.1039/C4RA00037D ↗
5. Synthesis of the double-shell anatase-rutile TiO2 hollow spheres with enhanced photocatalytic activity10.1039/c3nr04043g ↗
6. Flower-like hydrogenated TiO2(B) nanostructures as anode materials for high-performance lithium ion batteries10.1016/j.jpowsour.2014.05.121 ↗
7. Heterogeneous photocatalytic degradation of organic contaminants over titanium dioxide: a review of fundamentals, progress and problems10.1016/j.jphotochemrev.2007.12.003 ↗
8. Template-assisted fabrication of magnetically responsive hollow titania capsules10.1021/la103504e ↗
9. Single-crystalline rutile TiO2 hollow spheres: room-temperature synthesis, tailored visible-light-extinction, and effective scattering layer for quantum dot-sensitized solar cells10.1021/ja2049463 ↗
10. Hydrothermal synthesis and visible-light photocatalytic activity of alpha-Fe2O3/TiO2 composite hollow microspheres10.1016/j.ceramint.2013.04.040 ↗
11. Uniform hollow TiO2:Sm3+ spheres: solvothermal synthesis and luminescence properties10.1016/j.powtec.2013.02.010 ↗
12. Visible light photocatalytic activity and photoelectrochemical property of Fe-doped TiO2 hollow spheres by sol–gel method10.1007/s10971-011-2497-5 ↗
13. A one-pot method to prepare N-doped titania hollow spheres with high photocatalytic activity under visible light10.1016/j.apsusc.2009.11.023 ↗
14. Preparation and characterization of WO3/TiO2 hollow microsphere composites with catalytic activity in dark10.1016/j.cej.2010.12.007 ↗
15. Efficient fabrication of ZrO2-doped TiO2 hollow nanospheres with enhanced photocatalytic activity of Rhodamine B degradation10.1016/j.jcis.2011.07.055 ↗
16. Preparation and photoelectrochemical properties of TiO2 hollow spheres embedded TiO2/CdS photoanodes for quantum-dot-sensitized solar cells10.1016/j.jallcom.2013.01.106 ↗
17. Room-temperature formation of hollow Cu2O nanoparticles10.1002/adma.200903947 ↗
18. Synthesis of Cu2O nanocrystals from cubic to rhombic dodecahedral structures and their comparative photocatalytic activity10.1021/ja209662v ↗
19. Fabrication of truncated rhombic dodecahedral Cu2O nanocages and nanoframes by particle aggregation and acidic etching10.1021/ja804625s ↗
20. Enhanced decoloration activity by Cu2O@TiO2 nanobelts heterostructures via a strong adsorption-weak photodegradation process10.1016/j.apsusc.2013.05.054 ↗
21. Porous-structured Cu2O/TiO2 nanojunction material toward efficient CO2 photoreduction10.1088/0957-4484/25/16/165402 ↗
22. Cu2O/TiO2 heterostructure nanotube arrays prepared by an electrodeposition method exhibiting enhanced photocatalytic activity for CO2 reduction to methanol10.1016/j.catcom.2013.11.011 ↗
23. Photocatalytic activity of Cu2O and bilayer Cu2O/TiO2 films prepared by magnetron sputtering10.3724/SP.J.1077.2012.00395 ↗
24. Preparation and photovoltaic properties Cu2O/TiO2 nanorod heterojunction solar cells10.1166/sam.2013.1635 ↗
25. A strategy for in-situ synthesis of well-defined core-shell Au@TiO2 hollow spheres for enhanced photocatalytic hydrogen evolution10.1016/j.cej.2014.07.059 ↗
26. Biomimetic synthesis of TiO2–SiO2–Ag nanocomposites with enhanced visible-light photocatalytic activity10.1021/am4004733 ↗
27. Electronic structure of Cu2O and CuO10.1103/PhysRevB.38.11322 ↗
28. Interrupted growth and photoelectrochemistry of Cu2O and Cu particles on TiO210.1016/j.electacta.2012.07.034 ↗
29. Enhancement of the visible light photocatalytic activity of Cu2O/BiVO4 catalysts synthesized by ultrasonic dispersion method at room temperature10.1016/j.mseb.2013.11.001 ↗
30. Synergistic effect of Cu2O/TiO2 heterostructure nanoparticle and its high H2 evolution activity10.1016/j.ijhydene.2014.01.209 ↗