Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/70571
Title: Enhanced photocatalytic activity of WS2 film by laser drilling to produce porous WS2/WO3 heterostructure
Authors: Ma, SN 
Zeng, LL 
Tao, LL 
Tang, CY 
Yuan, HY 
Long, H 
Cheng, PK 
Chai, Y 
Chen, CS 
Fung, KH 
Zhang, XM 
Lau, SP 
Tsang, YH 
Issue Date: 2017
Publisher: Nature Publishing Group
Source: Scientific reports, 2017, v. 7, 3125 How to cite?
Journal: Scientific reports 
Abstract: Methods and mechanisms for improvement of photocatalytic activity, are important and popular research topics for renewable energy production and waste water treatment. Here, we demonstrate a facile laser drilling method for engineering well-aligned pore arrays on magnetron-sputtered WS2 nanofilms with increased active edge sites; the proposed method promotes partial oxidation to fabricate WS2/WO3 heterojunctions that enhance the separation of photogenerated electron-hole pairs. The WS2 film after one, two, and three treatments exhibited photocurrent density of 3.9, 6.2, and 8 mu A/cm(2), respectively, reaching up to 31 times larger than that of pristine WS2 film along with greatly improved charge recombination kinetics. The unprecedented combinational roles of laser drilling revealed in this study in regards to geometric tailoring, chemical transformation, and heterojunction positioning for WS2- based composite nanomaterials create a foundation for further enhancing the performance of other 2D transition metal dichalcogenides in photocatalysis via laser treatment.
URI: http://hdl.handle.net/10397/70571
ISSN: 2045-2322
DOI: 10.1038/s41598-017-03254-2
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

10
Last Week
1
Last month
Citations as of Apr 6, 2019

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
Citations as of Apr 4, 2019

Page view(s)

11
Last Week
2
Last month
Citations as of Apr 16, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.