10.5281/ZENODO.4026036
Radenka Krsmanovic Whiffen
0000-0001-7136-3384
ENEA
Loris Pietrelli
0000-0002-3825-1468
ENEA
Amelia Montone
ENEA
Tailoring co-precipitation synthesis to maximize production yield of nanocrystalline wurtzite ZnS
Zenodo
2020
nanofabrication
wurtzite
zinc sulfide
co-precipitation synthesis
2020-09-12
en
Poster
https://zenodo.org/record/4026037
10.5281/zenodo.4026037
Creative Commons Attribution 4.0 International
Open Access
<p>Wurtzite based materials have the advantages of being cheap, no-toxic and offering excellent opto-electrical, piezoelectric and pyroelectric properties. The nanocrystalline wurtzite ZnS, being a room temperature stable material unlike its bulk counterpart, is interesting because of its potential in piezoelectric and pyroelectric energy harvesting. In this work we aimed to tailor a simple synthesis method for nanocrystalline wurtzite production, which would be easy to scale up.<br>
We used the well-known reaction of zinc chloride with thiourea or sodium sulfide dissolved in ethyl glycol at a carefully controlled molar ratio in medium temperature conditions (140-150°C) to produce pure, nanocrystalline ZnS in the hexagonal (wurtzite) phase, via a series of consecutive experiments. The amount of solvent was kept the same (60 ml of ethyl glycol) by re-using what remained of the solvent from the previous reaction and topping up the quantity lost. The productivity yield increased over 6 successive reactions from 156 mg to 446 mg per batch at a constant mMZn/mMS = 1 ratio. The obtained nanopowder has been characterized using TG, BET, FTIR, TEM and SEM techniques. Our plan is to build an in-house pilot plant that should produce substantial amounts of wurtzite ZnS nano-powder in an environmentally friendly and cost effective way.</p>
<p><br>
Acknowledgement: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie SkÅ‚odowska-Curie grant agreement No. 797951.</p>
European Commission
10.13039/501100000780
797951
ZnS Wurtzite Nanotextured Ceramic Materials for Pyroelectric Energy Harvesting