Preparation and gas sensing activity of La and Y co-doped titania nanoparticles
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- 作者：Zhihong Jing ; Baoping Ling ; Yang Yu ; Wei Qi…
- 关键词：Titania nanoparticles ; Sol–gel method ; Co ; dope ; Gas sensing activity ; 2 ; Chlorophenol
- 刊名：Journal of Sol-Gel Science and Technology
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：73
- 期：1
- 页码：112-117
- 全文大小：693 KB
- 参考文献：1. Cao J, Dou H, Zhang H, Mei H, Liu S, Fei T, Wang R, Wang L, Zhang T (2014) Controllable synthesis and HCHO-sensing properties of In2O3 micro/nanotubes with different diameters. Sens Actuators B 198:180-87 CrossRef
2. Zeng Y, Zhang T, Wang L, Kang M, Fan H, Wang R, He Y (2009) Enhanced toluene sensing characteristics of TiO2-doped flowerlike ZnO nanostructures. Sens Actuators B 140:73-8 CrossRef
3. Kim J, Kim W, Yong K (2012) CuO/ZnO heterostructured nanorods: photochemical synthesis and the mechanism of H2S gas sensing. J Phys Chem C 116:15682-5691 CrossRef
4. Munz M, Langridge MT, Devarepally KK, Cox DC, Patel P, Martin NA, Vargha G, Stolojan V, White S, Curry RJ (2013) Facile synthesis of titania nanowires via a hot filament method and conductometric measurement of their response to hydrogen sulfide gas. ACS Appl Mater Interfaces 5:1197-205 CrossRef
5. Zhang J, Choi S-W, Kim SS (2011) Micro- and nano-scale hollow TiO2 fibers by coaxial electrospinning: Preparation and gas sensing. J Solid State Chem 184:3008-013 CrossRef
6. Rai P, Kim YS, Song HM (2012) The role of gold catalyst on the sensing behavior of ZnO nanorods for CO and NO2 gases. Sens Actuators B 165:133-42 CrossRef
7. Lou Z, Li F, Deng J, Wang L, Zhang T (2013) Branch-like hierarchical heterostructure (α-Fe2O3/TiO2): a novel sensing material for trimethylamine gas sensor. ACS Appl Mater Interfaces 5:12310-2316 CrossRef
8. Jing Z, Zhan J (2008) Fabrication and gas-sensing properties of porous ZnO nanoplates. Adv Mater 20:4547-551 CrossRef
9. Li Z, Pan W, Zhang D, Zhan J (2010) Morphology-dependent gas-sensing properties of ZnO nanostructures for chlorophenol. Chem Asian J 5:1854-859 CrossRef
10. Wang C, Yin L, Zhang L, Qi Y, Lun N, Liu N (2010) Large scale synthesis and gas-Sensing properties of anatase TiO2 three-dimensional hierarchical nanostructures. Langmuir 26(15):12841-2848 CrossRef
11. Su J, Zou X-X, Zou Y-C, Li G-D, Wang P-P, Chen J-S (2013) Porous titania with heavily self-doped Ti3+ for specific sensing of CO at room temperature. Inorg Chem 52:5924-930 CrossRef
12. Delan A, Karuppasamy A, Schulthei? E (2009) A comparative study on the photocatalytic and gas sensing properties of pure and N-doped TiO2 thin films. Plasma Process Polym 6:S731–S734 CrossRef
13. Nechita V, Schoonman J, Musat V (2012) Ethanol and methanol sensing characteristics of Nb-doped TiO2 porous thin films. Phys Status Solidi A 209:153-59 CrossRef
14. Buso D, Post M, Cantalini C, Mulvaney P, Martucci A (2008) Gold nanoparticle-doped TiO2 semiconductor thin films: gas sensing properties. Adv Funct Mater 18:3843-849 CrossRef
15. Comini E, Faglia G, Sberveglieri G, Li YX, Wlodarski W, Ghantasala MK (2000) Sensitivity enhancement towards ethanol and methanol of TiO2 films doped with Pt and Nb. Sens Actuators B 64:169-74
文摘
A novel gas sensing material, La–Y co-doped TiO2 nanoparticles, was synthesized by sol–gel method and applied to detect organic pollutants 2-chlorophenol. The products have been characterized through XRD, FESEM, TEM, HRTEM and ICPOES technologies. The sensor fabricated by 0.2?mol% La and 0.2?mol% Y co-doped TiO2 nanoparticles presented good gas sensing activity to 2-chlorophenol with short response-recovery time and long stability. The results demonstrated that the co-doping of La–Y and ratio of rutile to anatase in TiO2 nanoparticles, which play a key role in high sensitivity to 2-chlorophenol. It suggested that the rare earth ions La–Y co-doped TiO2 nanoparticles might be a capable gas sensing material to evaluation organic pollutants in future.