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Articles 1 - 4 of 4
Full-Text Articles in Engineering
Electronic Structure, Pore Size Distribution, And Sorption Characterization Of An Unusual Mof, {[Ni(Dpbz)][Ni(Cn)4]}N, Dpbz = 1,4-Bis(4-Pyridyl)Benzene, Winnie Wong-Ng, Izaak Williamson, Matthew Lawson, Daniel W. Siderus, Jeffrey T. Culp, Yu-S. Chen, Lan Li
Electronic Structure, Pore Size Distribution, And Sorption Characterization Of An Unusual Mof, {[Ni(Dpbz)][Ni(Cn)4]}N, Dpbz = 1,4-Bis(4-Pyridyl)Benzene, Winnie Wong-Ng, Izaak Williamson, Matthew Lawson, Daniel W. Siderus, Jeffrey T. Culp, Yu-S. Chen, Lan Li
Materials Science and Engineering Faculty Publications and Presentations
The monoclinic (Ni(L)[Ni(CN)4] (L= 1,4-Bis(4-pyridyl) benzene) compound (defined as Ni-dpbz) is a flexible metal organic framework which assumes a pillared structure with layers defined by 2D Ni[Ni(CN)4]n nets and dpbz ligands as pillars. The structure features an entrapped dpbz ligand that links between the open ends of four-fold Ni sites from two neighboring chains. This arrangement results in an unusual 5-fold pseudo square-pyramid environment for Ni and a significantly long Ni-N distance of 2.369(4) Å. Using Density Functional Theory calculations, the different bonding characteristics between the 5-fold and 6-fold Ni's were determined. We found that …
Atomic Layer Deposition Of Molybdenum Disulfide Films Using Mof6 And H2S, Steven Letourneau, Elton Graugnard
Atomic Layer Deposition Of Molybdenum Disulfide Films Using Mof6 And H2S, Steven Letourneau, Elton Graugnard
Materials Science and Engineering Faculty Publications and Presentations
Molybdenum sulfide films were grown by atomic layer deposition on silicon and fused silica substrates using molybdenum hexafluoride (MoF6) and hydrogen sulfide at 200 °C. In situ quartz crystal microbalance (QCM) measurements confirmed linear growth at 0.46 Å/cycle and self-limiting chemistry for both precursors. Analysis of the QCM step shapes indicated that MoS2 is the reaction product, and this finding is supported by x-ray photoelectron spectroscopy measurements showing that Mo is predominantly in the Mo(IV) state. However, Raman spectroscopy and x-ray diffraction measurements failed to identify crystalline MoS2 in the as-deposited films, and this might result …
A Classification Methodology For Landfill Leachates, David J. Tonjes
A Classification Methodology For Landfill Leachates, David J. Tonjes
Technology & Society Faculty Publications
A characterization scheme based on landfill leachate chemical signatures could support studies of leachate evolution over time, liner performance, and help confirm or disprove potential leachate contamination of groundwater. Wide variations in single constituents across time, sites, and site practices, and inconsistencies related to common bivariate measures suggest a robust, multivariate analysis could be useful. A variant Stiff diagram approach (a subjective analytical comparison of soluble salts) has been developed, and supports graphical depictions of multiple samples. The hypothesis is that leachates with similar chemistry form clusters, and this was tested using a data set of 652 samples from 26 …
Media Coverage Of Epa's Draft Dioxin Reassessment Report, Sharon M. Friedman, Megan A. Fitzpatrick, Brenda P. Egolf
Media Coverage Of Epa's Draft Dioxin Reassessment Report, Sharon M. Friedman, Megan A. Fitzpatrick, Brenda P. Egolf
RISK: Health, Safety & Environment (1990-2002)
Using content analysis, the authors examine the utility of news media in democratic decision making.