solid state synthesis of mixed metal oxides
TRANSCRIPT
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Solid State Synthesis of Mixed Metal Oxides
Tornés-Blanco AnibalAlicea-Pauneto AbneilColón-Rivera RamónGonzález-Piñeiro Ann
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INTRODUCTION
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Background Info
❏ Solid-state synthesis ❏ Branch of material chemistry : Mix &
match solids.❏ Why is this study so important?
❏ Obtain new compounds with unique properties to aid the technologically dependent world we live in.
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Cornerstone of technology
❏ Superconductors such as high purity silicon and catalysts like platinum,
took a pivotal role in the industrialization process during the 20th century.
Chen et al. 2015
“In recent years, electrochemical capacitors, also known as supercapacitors, have received a large amount of attention as an important power storage device due to their high power density, fast recharge capability and long cycle life .”
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Related Works
Koscielski et al. 2012
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Problem
❏ Synthesize new compounds from the combination of different metals from the families 13, 14, 15, chalcogens (group 16) and intrinsic Oxygen.
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Hypothesis❏ After heat application, oxidation reactions will occur and
hopefully, crystals will appear .
❏ This is a trial and error experimentation
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METHODOLOGY
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Reactions
Ternary Quaternary
1 In : 1 Sb 1 S : 1 Bi : 1 In
1 In : 1 Bi 1 Pb : 1 Sn : 1 S
2 In : 1 Sn 2 In : 1 Sn : 1S
2 In : 1 Pb 2 In : 1 Sn : 2 S
Ternary Quaternary
5 In : 3 Sb 1 Co : 2 In : 1 S
5 Sn : 3 Pb 1 Co : 1 Bi : 1 S
5 Bi : 3 Pb 1 In : 2 Co : 2 S
1 Bi : 2 Pb 1 In : 1 Bi : 1 S
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Methodology
Element Selection & Weighing
Carbon CoatingSilica Tube Split
http://chemistry.stackexchange.com/questions/18968/why-does-a-glass-tube-show-white-bands-after-being-heated-with-a-torch
http://instrumentosdelaboratorio.org/balanza-de-laboratorio
http://oxypetrol.com/ https://www.flickr
.com/photos/fallenangel8/2503298659/
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Methodology
Transfer the reaction to the tube
Heat in the GSL-1100x “Lisa”
”
Results Analysisvia Microscope
http://instrumentosdelaboratorio.org/espatula-de-laboratorio
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Heating Curve
Cooling
Heating
Liquid/Solid
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Results
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We found Crystals!
But not the type we expected...
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Ternary Reactions I 5 In : 3 Sb 5 Sn : 3 Pb
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Ternary Reactions II 5 Bi : 3 Pb 1 Bi : 2 Pb
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Ternary Reactions III1 In : 1 Sb 1 In : 1 Bi
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Ternary Reactions IV 2 In : 1 Sn 2 In : 1 Pb
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Conclusions
❏ The results were partially positive making allusions to our
hypothesis.
❏ We obtained Oxide Powder.
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Limitations
❏ Time Limitation
❏ Only one high temperature vacuum tube furnace,
named ¨Lisa¨ .
❏ Oxygen insulating equipment
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Future Work
❏ Try new combinations of ternary and quaternary
compounds
❏ Analyze the data collected with the appropriate
instrumentation
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ReferencesChen S, Xue M, Li Y, Zhu L, Zhang D, Fang Q, Qiu S. 2015. Porous ZnCo2O4
nanoparticles derived from a new mixed-metal organic framework for supercapacitors. Royal Society of Chemistry (RSC) (2) . [2014 Oct 17, cited 2015 April 29] 2:(177-183). DOI: 10.1039/c4qi00167b
C. Z. Yuan, L. Yang, L. R. Hou, L. F. Shen, X. G. Zhang and X. W. Lou, Energy Environ. Sci., 2012, 5, 7883.
Koscielski L, Ringe E, Van Duyne R, Ellis D, Ibers J. 2012. Single-Crystal Structures, Optical Absorptions, and Electronic Distributions of Thorium Oxychalcogenides ThOQ (Q= S, Se, Te). American Chemical Society dx.doi.org/10.1021/ic300510x | Inorg. Chem. 2012, 51, 8112−8118.
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Acknowledgements
● RISE Program at UPR Cayey
● Omar Padilla
● Christopher Bernard
● Andres Diaz
● Maria Rivera
● Roberto González
● Dr. Lukasz Koscielski