KLI

Anisotropic heteronanocrystals of Cu2O-2D MoS2 for efficient visible light driven photocatalysis

Metadata Downloads
Abstract
Solar energy driven production of chemicals by photocatalysis holds great potential for solving the energy and environmental issues that are now being faced. However, the practical application of photocatalysis is limited because of low light absorbing efficiency, fast charge recombination rate, and low durability of photocatalysts. Herein we developed efficient solar energy-harvesting anisotropic binary heteronanocrystals (HNCs) composed of chemically exfoliated MoS2 (ce-MoS2) sheets and shape-controlled Cu2O NCs including cubic Cu2O (Cu2Ocube) and octahedral Cu2O NCs (Cu2Oocta). Because Cu2Ocube and Cu2Oocta are enclosed by the {100} and {111} facets, respectively, binary Cu2Ocube-MoS2 and Cu2Oocta-MoS2 HNCs can be considered as effective platforms for investigating the effects of surface structure and anisotropic morphology on photocatalytic reactions. The photocatalytic performance of Cu2O-MoS2 HNCs highly depended on both the surface facets of Cu2O NCs and the manner of Cu2O NCs and ce-MoS2 sheets coupling. The prepared anisotropic binary Cu2Ocube-MoS2 HNCs showed 2.5 times enhanced photocatalytic activity during hydrogen (H-2) production compared with Cu2Oocta-MoS2 HNCs. In addition, the degradation of theophylline under visible light irradiation was 2 times faster with Cu2Ocube-MoS2 HNCs than with Cu2Oocta-MoS2 HNCs because of synergistic structural and compositional benefits.
Author(s)
유은진김헌철김희진정수연류광선최상일홍종욱
Issued Date
2021
Type
Article
Keyword
Anisotropic binary heteronanocrystalsFacet-controlPhotocatalytic hydrogen productionPollutant degradation
DOI
10.1016/j.apsusc.2020.148159
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9613
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_elsevier_sciencedirect_doi_10_1016_j_apsusc_2020_148159&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Anisotropic%20heteronanocrystals%20of%20Cu2O-2D%20MoS2%20for%20efficient%20visible%20light%20driven%20photocatalysis&offset=0&pcAvailability=true
Publisher
APPLIED SURFACE SCIENCE
Location
네덜란드
Language
영어
ISSN
0169-4332
Citation Volume
538
Citation Number
1
Citation Start Page
148159
Citation End Page
148159
Appears in Collections:
Natural Science > Chemistry
Authorize & License
  • Authorize공개
Files in This Item:
  • There are no files associated with this item.

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