Improvement of a Real Gas-Sensor for the Origin of Methane Selectivity Degradation by μ-XAFS Investigation
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- 作者：Takahiro Wada ; Naoyoshi Murata ; Takuya Suzuki ; Hiromitsu Uehara…
- 关键词：Micro gas sensor ; Micro ; XAFS ; Pd/Al2O3 ; Deactivation
- 刊名：Nano-Micro Letters
- 出版年：2015
- 出版时间：July 2015
- 年：2015
- 卷：7
- 期：3
- 页码：255-260
- 全文大小：911KB
- 参考文献：1.C.X. Wang, L.W. Yin, L.Y. Zhang, D. Xiang, R. Gao, Metal oxide gas sensors: sensitivity and influencing factors. Sensors 10(3), 2088-106 (2010). doi:10.-390/?s100302088 CrossRef
2.T. Suzuki, K. Kunihara, M. Kobayashi, S. Tabata, K. Higaki, H. Ohnishi, A micromachined gas sensor based on a catalytic thick film/SnO2 thin film bilayer and thin film heater—Part 1: CH4 sensing. Sens. Actuators B Chem. 109(2), 185-89 (2005). doi:10.-016/?j.?snb.-005.-5.-13 CrossRef
3.S. Tabata, K. Higaki, H. Ohnishi, T. Suzuki, K. Kunihara, M. Kobayashi, A micromachined gas sensor based on a catalytic thick film/SnO2 thin film bilayer and a thin film heater—Part 2: CO sensing. Sens. Actuators B Chem. 109(2), 190-93 (2005). doi:10.-016/?j.?snb.-005.-5.-12 CrossRef
4.J.C. Kim, H.K. Jun, J.-S. Huh, D.D. Lee, Tin oxide-based methane gas sensor promoted by alumina-supported Pd catalyst. Sens. Actuators B Chem. 45(3), 271-77 (1997). doi:10.-016/?S0925-4005(97)00325-0 CrossRef
5.N. Murata, T. Suzuki, M. Kobayashi, F. Togoh, K. Asakura, Characterization of Pt-doped SnO2 catalyst for a high-performance micro gas sensor. Phys. Chem. Chem. Phys. 15(41), 17938-7946 (2013). doi:10.-039/?c3cp52490f CrossRef
6.M.A. Kumakhov, Channeling of photons and new X-ray optics. Nucl. Instrum. Methods Phys. Res. B 48(1-), 283-86 (1990). doi:10.-016/-168-583X(90)90123-C CrossRef
7.M.A. Kumakhov, F.F. Komarov, Multiple reflection from surface X-ray optics. Phys. Rep. 191(5), 289-50 (1990). doi:10.-016/-370-1573(90)90135-O CrossRef
8.P.J. Schields, D.M. Gibson, W.M. Gibson, N. Gao, H.P. Huang, I.Y. Ponomarev, Overview of polycapillary X-ray optics. Powder Diffr. 17(2), 70-0 (2002). doi:10.-154/-.-482080 CrossRef
9.N. Gao, K. Janssens, in X-Ray spectrometry: recent technological advances: polycapillary X-ray optics, ed. by K. Tsuji, J. Injuk, R. Van Grieken (Wiley, Chichester, 2005), pp. 89-10
10.M. Nomura, Y. Koike, M. Sato, A. Koyama, Y. Inada, K. Asakura, A new XAFS beamline NW10A at the photon factory. AIP Conf. Proc. 882(1), 896-98 (2007). doi:10.-063/-.-644697 CrossRef
11.N. Gao, I.Y. Ponomarev, Q.F. Xiao, W.M. Gibson, D.A. Carpenter, Monolithic polycapillary focusing optics and their applications in microbeam X-ray fluorescence. Appl. Phys. Lett. 69(11), 1529-531 (1996). doi:10.-063/-.-17994 CrossRef
12.A. Bjeoumikhov, N. Langhoff, S. Bjeoumikhova, R. Wedell, Capillary optics for micro X-ray fluorescence analysis. Rev. Sci. Instrum. 76(6), 063115 (2005). doi:10.-063/-.-938847 CrossRef
13.L. Cheng, X. Ding, Z. Liu, Q. Pan, X. Chu, Development of a micro-X-ray fluorescence system based on polycapillary X-ray optics for non-destructive analysis of archaeological objects. Spectrochim. Acta Part B 62(8), 817-23 (2007). doi:10.-016/?j.?sab.-007.-6.-10 CrossRef
14.T. Sugiyama, M. Uo, T. Wada, D. Omagari, K. Komiyama, T. Noguchi, Y. Jinbu, M. Kusama, Estimation of trace metal elements in oral mucosa specimens by using SR-XRF, PIXE, and XAFS. Biometals 28(1), 11-0 (2015). doi:10.-007/?s10534-014-9796-6 CrossRef
15.L. Vincze, F. Wei, K. Proost, B. Vekemans, K. Janssens, Y. He, Y. Yan, G. Falkenberg, Suitability of polycapillary optics for focusing of monochromatic synchrotron radiation as used in trace level micro-XANES measurements. J. Anal. At. Spectrom. 17(3), 177-82 (2002). doi:10.-039/?b110210a CrossRef
16.G. Silversmit, B. Vekemans, S. Nikitenko, W. Bras, V. Czhech, G. Zaray, I. Szaloki, L. Vincze, Polycapillary-optics-based micro-XANES and micro-EXAFS at a third-generation bending-magnet beamline. J. Synchrotron Radiat. 16, 237-46 (2009). doi:10.-107/?S090904950804330- CrossRef
17.T. Sun, Y. Xie, Z. Liu, T. Liu, T. Hu, X. Ding, Application of a combined system of polycapillary X-ray lens and toroidal mirror in micro-X-ray-absorption fine-structure facility. J. Appl. Phys. 99(9), 094907-1-94907-4 (2006). doi:10.-063/-.-193050
18.T. Sun, Z. Liu, X. Ding, Characterization of a polycapillary focusing X-ray lens for application in spatially resolved EXAFS experiments. Chem. Phys. Lett. 439(4-), 412-14 (2007). doi:10.-016/?j.?cplett.-007.-3.-05 CrossRef
19.M. Uo, K. Asakura, K. Watanabe, F. Watari, XAFS analysis of the bronchoalveolar lavage fluid of a tungsten carbide pneumoconiosis patient. Chem. Lett. 39(8), 852-53 (2010). doi:10.-246/?cl.-010.-52 CrossRef
20.N. Hirao, Y. Baba, T. Sekiguchi, Quick observation of photoelectron emission microscopy with focused soft X-rays using poly-capillary lens (Proceedings of the 5th international symposium on practical surface analysis, PSA-10 and 7th Korea-Japan international symposium on surface analysis). J. Surf. Anal. 17(3), 227-31 (2011)
21.W.M. Gibson, M.A. Kumakhov, Applications of X-ray and neutron capillary optics. X-ray detector physics and applications. Proc. SPIE 1736, 172-89 (1993). doi:10.-117/-2.-40473 CrossRef
22.X. Ding, N. Gao, G.J. Havrilla, Monolithi - 作者单位：Takahiro Wada (1)
Naoyoshi Murata (2)
Takuya Suzuki (2)
Hiromitsu Uehara (3)
Hiroaki Nitani (4)
Yasuhiro Niwa (4)
Motohiro Uo (1)
Kiyotaka Asakura (3)
1. Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, 113-8549, Japan
2. Corporate R&D Headquarters, Fuji Electric Co., Ltd., Tokyo, 191-8502, Japan
3. Catalysis Research Center, Hokkaido University, Sapporo, 001-0021, Japan
4. Photon Factory, Institute of Materials Structure Science, KEK, Tsukuba, 305-0801, Japan - 刊物类别：Nanotechnology and Microengineering; Nanotechnology; Nanoscale Science and Technology;
- 刊物主题：Nanotechnology and Microengineering; Nanotechnology; Nanoscale Science and Technology;
- 出版者：Springer Berlin Heidelberg
- ISSN：2150-5551
文摘
We have directly investigated the chemical state of the Pd species in a real μ-gas sensor device by examining the μ-fluorescence X-ray absorption fine structure. The μ-gas sensor device was heavily damaged by a heating process in which the temperature was ill-controlled, resulting in decrease of methane selectivity. We found that the PdO in the fresh μ-gas sensor was reduced to Pd metal particles as the methane selectivity decreased. Based on the investigation results, we modified the device structure so as to heat up homogeneously. The lifetime of the sensor was then successfully increased by more than 5 years. Keywords Micro gas sensor Micro-XAFS Pd/Al2O3 Deactivation