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Volume 6
Research & Reviews: Journal of Material Sciences
ISSN: 2321-6212
Advanced Materials 2018
September 04-06, 2018
September 04-06, 2018 | Zürich, Switzerland
21
st
International Conference on
Advanced Materials & Nanotechnology
Thermo electricity enhanced catalysis
Tiva Sharifi
1, 2
1
Rice University, USA
2
Umeå University, Sweden
T
he voltage generated in thermoelectric materials can supply energy to any energy demanding systemwhen there is a chance
of either existence of temperature gradient or the possibility to generate it if it does not cause any malfunction for the
system. Electro/photo catalytic reactions are good example of such systems. Thermoelectric materials can act as mini voltage
generators to boost catalytic reactions and hence reduce/eliminate the external bias energy. In this case, thermoelectric material
has a function similar to but conceptually different from the catalyst. As recently solar energy has been widely considered as a
renewable energy resource to direct or indirectly power up the catalytic reactions, a temperature gradient could be naturally
established and be utilized in the system. We have investigated the catalytic performance of nano structured tellurides (e.g.,
Bi
2
Te
3
and Sb
2
Te
3
) which are among the most known thermoelectric materials. By optimizing the structure, morphology and
size of thermoelectric materials, they are utilized in different catalytic reactions. We observe that with the effect of temperature
gradient these catalytically inert materials will contribute to and facilitate the catalytic reactions including electrochemical
water splitting and photocatalytic hydrogen desorption.
Recent Publications
1. Sharifi T, Zhang X, Costin G, Yazdi S, Woellner C F, Liu Y, Tiwary C S and Ajayan P (2017) Thermoelectricity enhanced
electro catalysis. Nano Letters 17(12):7908-7913.
2. Liu Y, Liang C, Wu J, Sharifi T, Xu H, Nakanishi Y, Yang Y, et al. (2018) Atomic layered titanium sulfide quantum dots as
electro catalysts for enhanced hydrogen evolution reaction. Advanced Materials Interfaces 5(1):1700895.
3. Sharifi T, Larsen C, Wang J, Kwong W L, Gracia Espino E, Mercier G, Messinger J, Wågberg T and Edman L (2016)
Photo voltaics: toward a low-cost artificial leaf: driving carbon based and bifunctional catalyst electrodes with solution
processed perovskite photovoltaics. Advanced Energy Materials 6(20).
4. Ekspong J, Sharifi T, Shchukarev A, Klechikov A, Wågberg T and Gracia‐Espino E (2016) Stabilizing active edge sites
in semi crystalline molybdenum sulfide by anchorage on nitrogen‐doped carbon nanotubes for hydrogen evolution
reaction. Advanced Functional Materials 36(37):6766-6776.
5. Pham T N, Sharifi T, Sandström R, Siljebo W, Shchukarev A, Kordas K, Wågberg T and Mikkola J P (2017) Robust
hierarchical 3D carbon foam electrode for efficient water electrolysis. Scientific Reports 7(1):6112.
Biography
Tiva Sharifi has completed her PhD in Material Science in Physics Department at Umeå University, Sweden. Her research has been mainly focused on the synthesis and
understanding of the properties of doped carbon based materials for energy conversion reactions. She then moved toAjayan Research Group at Rice University, Houston,
TX and has completed her Post-doctoral research on the understanding and resolving of the properties of low-dimensional materials.
tiva.sharifi@umu.seTiva Sharifi, Res. Rev. J Mat. Sci. 2018, Volume 6
DOI: 10.4172/2321-6212-C3-020