Imperial College London

DrCeciliaMattevi

Faculty of EngineeringDepartment of Materials

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 0833c.mattevi

 
 
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Location

 

2.11Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sokolikova:2019:10.1038/s41467-019-08594-3,
author = {Sokolikova, MS and Sherrell, PC and Palczynski, P and Bemmer, VL and Mattevi, C},
doi = {10.1038/s41467-019-08594-3},
journal = {Nature Communications},
title = {Direct Solution-Phase Synthesis of 1T’ WSe2 Nanosheets},
url = {http://dx.doi.org/10.1038/s41467-019-08594-3},
volume = {10},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Crystal phase control in layered transition metal dichalcogenides is central for exploiting their different electronic properties. Access to metastable crystal phases is limited as their direct synthesis is challenging, restricting the spectrum of reachable materials. Here, we demonstrate the solution phase synthesis of the metastable distorted octahedrally coordinated structure (1T’ phase) of WSe2 nanosheets. We design a kinetically-controlled regime of colloidal synthesis to enable the formation of the metastable phase. 1T’ WSe2 branched few-layered nanosheets are produced in high yield and in a reproducible and controlled manner. The 1T’ phase is fully convertible into the semiconducting 2H phase upon thermal annealing at 400 °C. The 1T’ WSe2 nanosheets demonstrate a metallic nature exhibited by an enhanced electrocatalytic activity for hydrogen evolution reaction as compared to the 2H WSe2 nanosheets and comparable to other 1T’ phases. This synthesis design can potentially be extended to different materials providing direct access of metastable phases.
AU - Sokolikova,MS
AU - Sherrell,PC
AU - Palczynski,P
AU - Bemmer,VL
AU - Mattevi,C
DO - 10.1038/s41467-019-08594-3
PY - 2019///
SN - 2041-1723
TI - Direct Solution-Phase Synthesis of 1T’ WSe2 Nanosheets
T2 - Nature Communications
UR - http://dx.doi.org/10.1038/s41467-019-08594-3
UR - http://hdl.handle.net/10044/1/67157
VL - 10
ER -