Co-precipitation synthesized nanostructured Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials for solar thermochemical conversion of CO<sub>2</sub> into fuels
<p dir="ltr">Synthesis, characterization, and application of Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials (where, Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, Er) for the thermochemical conversi...
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2020
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| Summary: | <p dir="ltr">Synthesis, characterization, and application of Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials (where, Ln = La, Pr, Nd, Sm, Gd, Tb, Dy, Er) for the thermochemical conversion of CO2 reported in this paper. The Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials were synthesized by using an ammonium hydroxide-driven co-precipitation method. The derived Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials were characterized via powder X-ray diffraction, scanning electron microscope, and electron diffraction spectroscopy. The characterization results indicate the formation of spherically shaped Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> nanostructured particles. As-prepared Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials were further tested toward multiple CO<sub>2</sub> splitting cycles by utilizing a thermogravimetric analyzer. The results obtained indicate that all the Ce<sub>0.9</sub>Ln0.<sub>05</sub>Ag0.<sub>05</sub>O<sub>2</sub><sub>−δ</sub> materials produced higher quantities of O<sub>2</sub> and CO than the previously studied pure CeO<sub>2 </sub>and lanthanide-doped ceria materials. Overall, the Ce<sub>0.911</sub>La<sub>0</sub>.<sub>053</sub>Ag<sub>0.047O1.925</sub> showed the maximum redox reactivity in terms of O<sub>2</sub> release (72.2 μmol/g cycle) and CO production (136.6 μmol/g cycle).</p><h2>Other Information</h2><p dir="ltr">Published in: Journal of Materials Science<br>License: <a href="https://creativecommons.org/licenses/by/4.0" target="_blank">https://creativecommons.org/licenses/by/4.0</a><br>See article on publisher's website: <a href="http://dx.doi.org/10.1007/s10853-020-04567-w" target="_blank">http://dx.doi.org/10.1007/s10853-020-04567-w</a></p> |
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