Enhanced photocatalytic performance of TiO2-ZnO hybrid nanostructures

Scientific Reports

Volumn 4, Issue , 2014, Pages

  Cheng, Chun ^a   Amini, Abbas ^b   Zhu, Chao ^c   Xu, Zuli ^c   Song, Haisheng ^d   Wang, Ning ^c  

^a SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY   (China)

^b DEAKIN UNIVERSITY   (Australia)

^c HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Hong Kong)

^d HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

NANOMATERIAL; TITANIUM; TITANIUM DIOXIDE; ZINC OXIDE;

ARTICLE; CATALYSIS; CHEMISTRY; LIGHT; SURFACE PROPERTY;

CATALYSIS; LIGHT; NANOSTRUCTURES; SURFACE PROPERTIES; TITANIUM; ZINC OXIDE;

EID: 84894869174     PISSN: None     EISSN: 20452322     Source Type: Journal    
DOI: 10.1038/srep04181     Document Type: Article

References (29)

1. Sheng, F. et al. Simulation on field enhanced electron transfer between the interface of ZnO-Ag nanocomposite. J. Phys. Chem. C 117, 18627-18633 (2013).
2. Gu, C. D. et al. Growth and photocatalytic activity of dendrite-like ZnO@Ag heterostructure nanocrystals Cryst. Growth Des. 9, 3278-3285 (2009).
3. Han, Y. et al. TiO2 supported Pd@Ag as highly selective catalysts for hydrogenation of acetylene in excess ethylene Chem. Commun. 49, 8350-8352 (2013).
4. Zheng, Y. H. et al. Ag/ZnO heterostructure nanocrystals: synthesis, characterization, and photocatalysis. Inorg. Chem. 46, 6980-6986 (2007).
5. Serpone, N., Maruthamuthu, P., Pichat, P., Pelizzetti, E. & Hidaka, H. Exploiting the interparticle electron transfer process in the photocatalysed oxidation of phenol, 2-chlorophenol and pentachlorophenol: chemical evidence for electron and hole transfer between coupled semiconductors. J. Photochem. Photobiol. A: Chem. 85, 247-255 (1995).
6. Sukharev, V. & Kershaw, R. Concerning the role of oxygen in photocatalytic decomposition of salicylic acid in water. J. Photochem. Photobiol. A: Chem. 98, 165-169 (1996). (Pubitemid 126165702)
7. Marci, G. et al. Preparation characterization and photocatalytic activity of polycrystalline ZnO/TiO2 systems.2 surface, bulk characteriza-tion, and 4- nitrophenol photodegradation in liquid-solid regime. J. Phys. Chem. B 105, 1033-1040 (2001).
8. Chueh, Y. L., Chou, L. J. & Wang, Z. L. SiO2/Ta2O5 core-shell nanowires and nanotubes. Angew. Chem. Int. Ed. 45, 7773-7778 (2006).
9. Shi, W. et al. A general approach to binary and ternary hybrid nanocrystals. Nano Lett. 6, 875-881 (2006).
10. Kwon, K.-W. & Shim, M. Gamma-Fe2O3/II-VI sulfide nanocrystal heterojunctions. J. Am. Chem. Soc. 127, 10269-10275 (2005).
11. Casavola, M. et al. Topologically controlled growth of magnetic-metalfunctionalized semiconductor oxide nanorods. Nano Lett. 7, 1386-1395 (2007). (Pubitemid 46838737)
12. Cheng, C., Yu, K. F., Cai, Y., Fung, K. K. & Wang, N. Site-specific deposition of titanium oxide on zinc oxide nanorods. J. Phys. Chem. C 111, 16712-16716 (2007). (Pubitemid 350207426)
13. Cheng, C. et al. Zn2TiO42ZnO Nanowire Axial Heterostructures Formed by Unilateral Diffusion. J. Phys. Chem. C 115, 78-82 (2010).
14. Naik, V. M., Haddad, D., Naik, R., Benci, J. & Auner, G. W. Optical properties of anatase, rutile and amorphous phases of TiO2 thin films grown at room temperature by RF magnetron sputtering. Mat. Res. Soc. Symp. Proc. 755, DD11.12.1-6 (2003).
15. David, M. K., Du, X., Cavanagh, A. S. &Weimer, A. W. Quantum confinement in amorphous TiO2 films studied via atomic layer deposition. Nanotechnology 19, 445401 (2008).
16. Hotchandani, S. & Kamat, P. V. Charge-transfer processes in coupled semiconductor systems. Photochemistry and photoelectrochemistry of the colloidal cadmium sulfide-zinc oxide system. J. Phys. Chem. 96, 6834-6839 (1992).
17. Robel, I., Bunker, B. & Kamat, P. V. Single-walled carbon nanotube-CdS nanocomposites as light-harvesting assemblies: Photoinduced charge-transfer interactions. Adv. Mater. 17, 2458-2463 (2005). (Pubitemid 41504976)
18. Vietmeyer, F., Seger, B. & Kamat, P. V. Excited state interactions and charge collection. Adv. Mater. 19, 2935-2940 (2007).
19. Gopidas, K. R., Bohorquez, M. & Kamat, P. V. Charge-transfer processes in colloidal CdS-TiO2 and CdS-AgI systems. J. Phys. Chem. 94, 6435-6440 (1990).
20. Sant, P. A. & Kamat, P. V. Interparticle electron transfer between size-quantized CdS and TiO2 semiconductor nanoclusters. Phys. Chem. Chem. Phys. 4, 198-203 (2002).
21. Jakob, M., Levanon, H. & Kamat, P. V. Charge distribution between UVIrradiated TiO2 and gold nanoparticles: determination of shift in the Fermi level. Nano Lett. 3, 353-358 (2003). (Pubitemid 37130509)
22. Subramanian, V., Wolf, E. E. & Kamat, P. V. Catalysis with TiO2/gold nanocomposites. J. Am. Chem. Soc. 126, 4943-4950 (2004).
23. Wood, A., Giersig, M. & Mulvaney, P. Fermi level equilibration in quantum dotmetal nanojunctions. J. Phys. Chem. B 105, 8810-8815 (2001). (Pubitemid 35338755)
24. Subramanian, V., Wolf, E. E. & Kamat, P. V. Green emission to probe photoinduced charging events in ZnO-Au nanoparticles. Charge distribution and fermi-level equilibration. J. Phys. Chem. B 107, 7479-7485 (2003).
25. Djurisic, A. B. & Leung, Y. H. Optical properties of ZnO nanostructures. Small 2, 944-961 (2006).
26. Ivanov, S. A. et al. Type-II core/shell CdS/ZnSe nanocrystals: synthesis, electronic structures, and spectroscopic properties. J. Am. Chem. Soc. 129, 11708-11719 (2007). (Pubitemid 47479918)
27. Leelavathi, A., Madrasa, G. & Ravishankar, N. Origin of enhanced photocatalytic activity and photoconduction in high aspect ratio ZnO nanorods. Phys. Chem. Chem. Phys. 15, 10795-802 (2013).
28. Li, Y., Sasaki, T., Shimizu, Y. & Koshizaki, N. Hexagonal-close- packed, hierarchical amorphous TiO2 nanocolumn arrays: transferability, enhanced photocatalytic activity, and superamphiphilicity without UV irradiation. J. Am. Chem. Soc. 130, 14755-14762 (2008).
29. Yao, B. D. et al. Formation mechanism of sodium titanate nanotubes. Appl. Phys. Lett. 82, 281-283 (2003).