Crystal Perfection in Cadmium Zinc Telluride Radiation Detectors
EMSL Project ID
1980
Abstract
This effort is to collect high resolution x-ray diffraction data to correlate with thermally stimulated current measurements. The samples are cadmium zinc telluride which have the potential to be high resolution gamma ray detectors at ambient temperatures.
Project Details
Project type
Exploratory Research
Start Date
2000-07-01
End Date
2003-06-03
Status
Closed
Released Data Link
Team
Principal Investigator
Related Publications
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173) Epling, W.S.; Peden, C.H.F.; Szanyi, J. "Carbonate Formation and Stability on a Pt/BaO/Al2O3 NOx Storage/Reduction Catalyst." J. Phys. Chem. C 112 (2008) 10952-10959.
178) Kim, D.H.; Kwak, J.H.; Wang, X.; Szanyi, J.; Peden, C.H.F. "The Roles of Pt and BaO in the Sulfation of Pt/BaO/Al2O3 Lean NOx Trap Materials: Sulfur K-Edge XANES and Pt LIII XAFS Studies." J. Phys. Chem. C 112 (2008) 2981-2987.
Cheng Y, J Hoard, C Lambert, JH Kwak, and CHF Peden. 2008. "NMR Studies of Cu/zeolite SCR Catalysts Hydrothermally Aged with Urea." Catalysis Today 136(1-2):34-39. doi:10.1016/j.cattod.2008.01.019
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Epling WS, I Nova, and CHF Peden. 2008. "Preface." Catalysis Today 136(1-2):1-2. doi:10.1016/j.cattod.2008.03.008
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Kim, D.H.; Kwak, J.H.; Szanyi, J.; Burton, S.D.; Peden, C.H.F. "Water-induced Bulk Ba(NO3)2 Formation From NO2 Exposed Thermally Aged BaO/Al2O3." Appl. Catal. B 72 (2007) 233-239.
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Kim, D.H.; Szanyi, J.; Kwak, J.H.; Szailer, T.; Hanson, J.C.; Wang, C.M.; Peden, C.H.F. "Effect of Barium Loading on the De-sulfation of Pt BaO/Al2O3 Studied by H2 TPRX, TEM, Sulfur K-edge XANES and In-situ TR-XRD." J. Phys. Chem. B 110 (2006) 10441-10448.
Kim, D.H.; Szanyi, J.; Kwak, J.H.; Wang, X.; Hanson, J.C.; Engelhard, M.; Peden, C.H.F. "Effects of Sulfation Level on the Desulfation Behavior of Pre-Sulfated Pt-BaO/Al2O3 Lean NOx Trap Catalysts: A Combined H2 TPRX, In-Situ Sulfur K-Edge XANES, XPS and TR-XRD Study." J. Phys. Chem. C 113 (2009) 7336-7341.
Kim DH, YH Chin, JH Kwak, and CHF Peden. 2008. "Promotional Effects of H2O Treatment on NOx Storage over Fresh and Thermally Aged Pt-BaO/Al2O3 Lean NOx Trap Catalysts ." Catalysis Letters 124(1-2):39-45. doi:10.1007/s10562-008-9505-6
Kwak JH, DH Kim, J Szanyi, and CHF Peden. 2008. "Excellent Sulfur Resistance of Pt/BaO/CeO2 Lean NOx Trap Catalysts." Applied Catalysis. B, Environmental 84(3-4):545-551. doi:10.1016/j.apcatb.2008.05.009
Kwak, J.H.; Hu, J.Z.; Kim, D.H.; Szanyi, J.; Peden, C.H.F. "Penta-coordinated Al3+ Ions as Preferential Nucleation Sites for BaO on γ-Al2O3: an Ultra-High Magnetic Field 27Al MAS NMR Study." J. Catal. 251 (2007) 189-194.
Kwak, J.H.; Kim, D.H.; Szanyi, J.; Szailer, T.; Peden, C.H.F. "NOx Uptake Mechanism on Pt/BaO/Al2O3 Catalysts." Catal. Lett. 111 (2006) 119-126.
Kwak, J.H.; Peden, C.H.F.; Szanyi, J. "Non-thermal plasma-assisted NOx reduction over Na-Y Zeolites: The promotional effect of acid sites." Catal. Lett. 109 (2006) 1-6.
Mei, D.; Ge, Q.; Kwak, J.H.; Kim, D.H.; Szanyi, J.; Peden, C.H.F. "Adsorption and Formation of BaO Overlayers on γ Al2O3 Surfaces." J. Phys. Chem. C 112 (2008) 18050 18060.
Mei, D.; Ge, Q.; Kwak, J.H.; Kim, D.H.; Verrier, C.; Szanyi, J.; Peden, C.H.F. "Characterization of Surface and Bulk Nitrates of γ-Al2O3?Supported Alkaline Earth Oxides using Density Functional Theory." Phys. Chem. Chem. Phys. 11 (2009) 3380-3389.
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Priyantha WA, RJ Smith, H Chen, M Kopczyk, M Lerch, C Key, P Nachimuthu, and W Jiang. 2009. "Fe-Al interface intermixing and the role of Ti, V, and Zr as a stabilizing interlayer at the interface." Journal of Applied Physics 105(5):Art. No. 053504.
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Szailer, T.; Kwak, J.H.; Kim, D.H.; Hanson, J.; Peden, C.H.F.; Szanyi, J. "Reduction of Stored NOx on Pt/Al2O3 and Pt/BaO/Al2O3 Catalysts with H2 and CO." J. Catal. 239 (2006) 51-64.
Szanyi, J.; Kwak, J.H.; Chimentao, R.J.; Peden, C.H.F. "Effect of H2O on the adsorption of NO2 on γ-Al2O3: an in situ FTIR/MS study." J. Phys. Chem. C 111 (2007) 2661-2669.
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Understanding the nature of surface nitrates in BaO/γ-Al2O3 NOx storage materials: A combined experimental and theoretical study
Ja Hun Kwak a, Donghai Mei a,∗, Cheol-Woo Yi a,1, Do Heui Kima, Charles H.F. Peden a, Lawrence F. Allard b,
János Szanyi a,∗
a Institute for Interfacial Catalysis, Pacific Northwest National Laboratory, P.O. Box 999, MSIN K8-80, Richland, WA 99352, USA
b High Temperature Materials Laboratory, Oak Ridge National Laboratory, TN, USA
Journal of Catalysis 261 (2009) 17-22.
Verrier CLM, JH Kwak, DH Kim, CHF Peden, and J Szanyi. 2008. "NOx uptake on alkaline earth oxides (BaO, MgO, CaO and SrO) supported on γ-Al2O3." Catalysis Today 136(1-2):121-127. doi:doi:10.1016/j.cattod.2007.12.138
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