Details

Autor(en) / Beteiligte

• Wu, Zhuangzhi
• Ouyang, Min
• Wang, Dezhi
• Liu, Xinli

Titel

Boosted photo-electro-catalytic hydrogen evolution over the MoS2/MoO2 Schottky heterojunction by accelerating photo-generated charge kinetics

Ist Teil von

• Journal of alloys and compounds, 2020-08, Vol.832, p.154970, Article 154970

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The photoelectrocatalytic water splitting of molybdenum disulfide is hindered by the intrinsic large electrical resistance among adjacent layers, serious photo-generated carrier recombination and limited utilization of visible light. Herein, we construct MoS2/MoO2 heterostructures via a facile in situ hydrothermal route, in which a Schottky junction is established between the MoS2 semiconductor and metallic MoO2. As a result, the photoelectrochemical current density of MoS2/MoO2 is enhanced about 1.6 times than that of pure MoS2, achieving −10.3 mA cm−2 at −1.8 V vs. SCE, which can be attributed to the reduced electron transfer resistance, enlarged photo-generated carrier separation efficiency and enhanced light absorption due to the presence of metallic MoO2. •MoS2/MoO2 heterostructure is in situ prepared to construct a Schottky junction.•The presence of MoO2 can significantly reduce the charge transfer resistance.•The obtained Schottky junction improves the utilization of solar energy.•The Schottky junction enhances the separation efficiency of electron and holes.