Controllable synthesis and tunable photocatalytic activity of TiO2 nanowires via alcohol-thermal method
- 17 Downloads
Titania nanowires (TiO2-NW) with tunable aspect ratios and morphologies were directly synthesized using a simple alcohol-thermal technique. Specifically, ethanol and acetic acid were used as solvents and lithium ion was used as the capping agent to promote the conversion of titanium butoxide into TiO2-NW. The morphologies and crystal phases of TiO2-NW were determined by the molar ratio of solvents and the content (mol%) of lithium ion. The band gap of TiO2-NW with pure anatase phase is slightly bigger than that of TiO2-NW with a mixture of anatase and rutile phases. All TiO2-NW could achieve effective decolorization of methyl blue (the decolorization rate is over 95%) after 35-min ultraviolet (UV) irradiation.
KeywordsNanowires TiO2 Photocatalysis Degradation Photocurrent
This work was financially supported by the National Natural Science Foundation of China (No. 51408528) and the Natural Science Foundation of Hebei Province, China (No. E2014203089).
- Wang J, Wang C, Zhu S, Luo X, Li Z, Xu L. Benzohydroxamic acid photodegradation by prepared Ce modified TiO2. Chin J Rare Metals. 2018;42(4):393.Google Scholar
- Wang J, Lou C, Chen X, Hu F, Yan B, Zhang M. Preparation and optical properties of inverse opal titanium dioxide. Chin J Rare Metals. 2018;42(8):850.Google Scholar
- Xu ZX, Yang JT, Liu K, Guo XQ. Shape evolution behavior of anatase titania nanocrystals via the Solvothermal method. Acta Phys Chim Sin. 2016;32(2):581.Google Scholar
- Cheng Z, Wang W, Yang L, Xu Z, Ji Z, Huang S. Preparation of La–TiO2 and photocatalytic degradation of petrochemical secondary effluent. Chin J Rare Metals. 2018;42(9):950.Google Scholar
- Kumar PS, Nizar SAS, Sundaramurthy J, Ragupathy P, Thavasi V, Mhaisalkar SG, Ramakrishna S. Tunable hierarchical TiO2 nanostructures by controlled annealing of electrospun fibers: formation mechanism, morphology, crystallographic phase and photoelectrochemical performance analysis. J Mater Chem. 2011;21(26):9784.CrossRefGoogle Scholar