Preparation of mesoporous Ag-containing TiO2 heterojunction film and its photocatalytic property
Source abstract
Abstract
Mesoporous Ag/TiO2 heterojunction films (Ag-MTHF) with enhanced photocatalytic activity were synthesized by a three-step approach including an electrochemical anodization technique followed by successive ionic layer adsorption and reaction (SILAR) and solvothermal methods. The distribution of Ag nanoparticles on the inner structure of the mesoporous TiO2 film was confirmed by field emission scanning electron (FE-SEM) and transmission electron microscopes (TEM). The formation progress of the novel mesoporous Ag/TiO2 nanojunction film with Ag average diameter of 17 nm was illuminated. The formed nanojunction between Ag and TiO2 nanoparticles largely enhanced the photocatalytic degradation of methyl orangey (MO), and the corresponding mechanism was proposed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. Ashkarran AA, Aghigh SM, kavianipour M, Farahani NJ (2011) Visible light photo-and bioactivity of Ag/TiO2 nanocomposite with various silver contents. Curr Appl Phys 11:1048–105510.1016/j.cap.2011.01.042 ↗
2. Fujishima A, Honda K (1972) Electrochemical photolysis of water at a semiconductor electrode. Nature 238:37–3810.1038/238037a0 ↗
3. Girginov C, Stefchev P, Vitanov P, Dikov H (2012) Silver doped TiO2 photocatalyst for methyl orange degradation. J Eng Sci Technol Rev 5:14–1710.25103/jestr.054.03 ↗
4. Hartmann P, Lee DK, Smarsly BM, Janek J (2010) Mesoporous TiO2: comparison of classical sol-gel and nanoparticle based photoelectrodes for the water splitting reaction. ACS Nano 4:3147–315410.1021/nn1004765 ↗
5. Kim D, Lee K, Roy P, Birajdar BI, Spiecker E, Schmuki P (2009) Formation of a non-thickness-limited titanium dioxide mesosponge and its use in dye-sensitized solar cells. Angew Chem 121:9490–949310.1002/ange.200904455 ↗
6. Krins N, Faustini M, Louis B, Grosso D (2010) Thick and crack-free nanocrystalline mesoporous TiO2 films obtained by capillary coating from aqueous solutions. Chem Mater 22:6218–622010.1021/cm102524u ↗
7. Lee K, Kim D, Roy P, Paramasivam I, Birajdar BI, Spiecker E, Schmuki P (2010) Anodic formation of thick anatase TiO2 mesosponge layers for high-efficiency photocatalysis. J Am Chem Soc 132:1478–147910.1021/ja910045x ↗
8. Li D, Zhang Y, Zhang Y, Zhou X, Guo S (2013) Fabrication of bidirectionally doped β-Bi2O3/TiO2-NTs with enhanced photocatalysis under visible light irradiation. J Hazard Mater 258:42–4910.1016/j.jhazmat.2013.02.058 ↗
9. Lin Y, Tung K, Tzeng Y, Chen J, Chang K (2012) Rapid atmospheric plasma spray coating preparation and photocatalytic activity of macroporous titania nanocrystalline membranes. J Membr Sci 389:83–9010.1016/j.memsci.2011.10.018 ↗
10. Ohko Y, Tatsuma T, Fujii T, Naoi K, Niwa C, Kubota Y, Fujishima A (2003) Multicolour photochromism of TiO2 films loaded with silver nanoparticles. Nat Mater 2:29–3110.1038/nmat796 ↗
11. Onsuratooma S, Chavadej S, Sreethawong T (2011) Hydrogen production from water splitting under UV light irradiation over Ag-loaded mesoporous-assembled TiO2–ZrO2 mixed oxide nanocrystal photocatalysts. Int J Hydrogen Energy 36:5246–526110.1016/j.ijhydene.2011.01.176 ↗
12. Periyat P, Leyland N, McCormack DE, Colreavy J, Corr D, Pillai SC (2010) Rapid microwave synthesis of mesoporous TiO2 for electrochromic displays. J Mater Chem 20:3650–365510.1039/b924341k ↗
13. Sauthier G, Pino AP, Figueras A, Gyorgy E (2011) Synthesis and characterization of Ag nanoparticles and Ag-loaded TiO2 photocatalysts. J Am Ceram Soc 94:3780–378610.1111/j.1551-2916.2011.04693.x ↗
14. Sauvage F, Chen D, Comte P, Huang F, Heiniger LP, Cheng YB, Caruso RA, Graetzel M (2010) Dye-sensitized solar cells employing a single film of mesoporous TiO2 beads achieve power conversion efficiencies over 10 %. ACS Nano 4:4420–442510.1021/nn1010396 ↗
15. Wang Q, Yang X, Liu D, Zhao J (2012a) Fabrication, characterization and photocatalytic properties of Ag nanoparticles modified TiO2 NTs. J Alloy Compd 527:106–11110.1016/j.jallcom.2012.02.180 ↗
16. Wang Q, Yang X, Wang X, Huang M, Hou J (2012b) Synthesis of N-doped TiO2 mesosponge by solvothermal transformation of anodic TiO2 nanotubes and enhanced photoelectrochemical performance. Electrochim Acta 32:158–16210.1016/j.electacta.2011.12.009 ↗
17. Xiong Z, Ma J, Ng WJ, Waite TD, Zhao XS (2011) Silver-modified mesoporous TiO2 photocatalyst for water purification. Water Res 45:2095–210310.1016/j.watres.2010.12.019 ↗
18. Yang G, Jiang Z, Shi H, Xiao T, Yan Z (2010) Preparation of highly visible-light active N-doped TiO2 photocatalyst. J Mater Chem 20:5301–530910.1039/c0jm00376j ↗
19. Zheng Z, Huang B, Qin X, Zhang X, Dai Y, Whangbo MH (2011) Facile in situ synthesis of visible-light plasmonic photocatalysts M@TiO2 (M = Au, Pt, Ag) and evaluation of their photocatalytic oxidation of benzene to phenol. J Mater Chem 21:9079–908710.1039/c1jm10983a ↗