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2D MoTe2 nanosheets by atomic layer deposition: Excellent photo-electrocatalytic properties
Authors: Zazpe Raúl | Sopha Hanna Ingrid | Charvot Jaroslav | Krumpolec Richard | Rodriguez Pereira Jhonatan | Michalicka Jan | Mistrík Jan | Baca Dominik | Motola Martin | Bureš Filip | Macák Jan
Year: 2021
Type of publication: článek v odborném periodiku
Name of source: Applied Materials Today
Publisher name: Elsevier Science BV
Place: Amsterdam
Page from-to: 101017
Titles:
Language Name Abstract Keywords
cze 2D MoTe2 nanovrstvy připravené depozicí atomárních vrstev: Vynikající foto-elektrokatalytické vlastnosti Je popsána příprava MoTe2 nanovrstev metodou depozice atomárních vrstev. Růst ALD MoTe2 byl studován na substrátech různých vlastností, včetně vrstev TiO2 nanotrubiček (TNT) používaných jako aktivní podpůrný materiál pro výrobu hierarchizované nanotrubkové heterostruktury MoTe2/TNT. Kombinace nově syntetizovaného prekurzoru Te s komerčním prekurzorem Mo poskytla růst 2D vločkovitých nanovrstev MoTe2 převážně orientovaných mimo rovinu. Takto připravený MoTe2 byl charakterizován různými technikami, které potvrdily jeho chemické složení a odhalily 2D vločkovité nanokrystalické struktury. nanovrstvy; ALD; katalýza
eng 2D MoTe2 nanosheets by atomic layer deposition: Excellent photo-electrocatalytic properties Herein, the synthesis of MoTe2 nanosheets by means of Atomic Layer Deposition (ALD) is demonstrated for the first time. ALD enables tight control over the thickness and the composition of the deposited material, which are highly appealing features for the nanostructure fabrication. The growth of ALD MoTe2 was studied on substrates of different nature, including TiO2 nanotube (TNT) layers used as active supporting material for fabricating hierarchical nanotubular MoTe2/TNT heterostructure. The combination of newly synthesized Te precursor with commercial Mo precursor rendered the growth of 2D flaky MoTe2 nanosheets mostly out-of-plane oriented. The as-deposited MoTe2 was extensively characterized by different techniques which confirmed its chemical composition and revealed 2D flaky nano-crystalline structures. In parallel, MoTe2/TNT layers were employed to explore and exploit both photoand electrocatalytic properties. The synergy stemming from the out-of-plane MoTe2 nanosheet orientation, with an optimized amount of catalytic active edges, and the fast electron transfer through 1D TiO2 nanotubes triggered the catalytic properties for both, organic pollutant degradation and hydrogen evolution reaction (HER) applications. Remarkably, the application of a cathodic potential originated a gradual HER electrochemical activation over time driving to a higher current density and an overpotential drop. (c) 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ) <comment>Superscript/Subscript Available</comment nanosheets; Atomic Layer Deposition; catalysis

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