Electronic and photocatalytic properties of transition metal decorated molybdenum disulfide |
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Author: | Shi, Xinying1,2 |
Organizations: |
1University of Oulu Graduate School 2University of Oulu, Faculty of Science, Physics |
Format: | ebook |
Version: | published version |
Access: | open |
Online Access: | PDF Full Text (PDF, 3.4 MB) |
Persistent link: | http://urn.fi/urn:isbn:9789526220086 |
Language: | English |
Published: |
Oulu : University of Oulu,
2018
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Publish Date: | 2018-08-30 |
Thesis type: | Doctoral Dissertation |
Defence Note: | Academic Dissertation to be presented with the assent of the Faculty of Science, University of Oulu for public discussion in the Auditorium Saalastinsali, on September 12th, 2018, at 12 o’clock noon. |
Tutor: |
Doctor Wei Cao Professor Marko Huttula |
Reviewer: |
Professor Toomas Plank Professor Jian Wang |
Opponent: |
Professor Peter Liljeroth |
Kustos: |
Doctor Wei Cao |
Description: |
AbstractThis thesis is dedicated to realizations and physical understanding of electronic and photocatalytic properties after decorating transition metals to the semiconducting molybdenum disulfide. Synthesized via facile wet chemical methods, the MoS₂-Au, MoS₂-Au-Ni and MoS₂-Ag-Ni composites were formed as binary or ternary compounds. The Au nanoparticles are stably joined to the MoS₂ matrix without deteriorating layered structures of the host. After introducing the Au nanoglue as a common buffer, a metallic contact is reached between Ni and MoS₂, and attributed to new electron migration channel via MoS₂ edge contact. Adapting the Ag as the buffer element can attach the Ni to the basal plane of the MoS₂ beside edge contact. The Ni-Ag-MoS₂ composite effectively splits water under visible light irradiation and produce hydrogen. The excellent photocatalytic activity is attributed to effective charge migration through dangling bonds at the MoS2-Ag-Ni alloy interface and the activation of MoS₂ basal planes. see all
Osajulkaisut / Original papersOsajulkaisut eivät sisälly väitöskirjan elektroniseen versioon / Original papers are not included in the electronic version of the dissertation.
see all
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Series: |
Report series in physical sciences |
ISSN: | 1239-4327 |
ISSN-L: | 1239-4327 |
ISBN: | 978-952-62-2008-6 |
ISBN Print: | 978-952-62-2007-9 |
Issue: | 120 |
Subjects: | |
Copyright information: |
© University of Oulu, 2018. This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited. |