中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Enhanced performance of direct Z-scheme CuS-WO3 system towards photocatalytic decomposition of organic pollutants under visible light
作者: Song, Chundong1;  Wang, Xiang2;  Zhang, Jing1;  Chen, Xuebing1;  Li, Can3
关键词: CuS ;  WO3 ;  Direct Z-scheme photocatalytic system ;  Rhodamine B
刊名: APPLIED SURFACE SCIENCE
发表日期: 2017-12-15
DOI: 10.1016/j.apsusc.2017.07.082
卷: 425, 页:788-795
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Coatings & Films ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Materials Science ;  Physics
英文摘要: CuS-WO3 composites were synthesized by an in situ solution method at low temperature. The crystalline phase, morphology, particle size, and the optical properties of CuS-WO3 samples were characterized by XRD, SEM, XPS, and UV-vis diffuse reflectance spectra. CuS-WO3 composites showed much higher activity for photocatalytic degradation of RhB as compared with WO3 and CuS. The degradation rate constant over 1 wt% CuS-WO3 catalyst was 4.4 times and 9.2 times higher than that of WO3 and CuS, respectively. It is found that holes (h(+)) and superoxide radical anions (. O-2(-)) are the dominant reactive species by using methanol, disodium ethylenediaminetetraacetate (EDTA) and ascorbic acid as scavengers. Band structure analysis shows that bottom of CB of WO3 is very similar with and higher (ca. 0.01 eV) than the top of VB of CuS. The results of PL showed that the similarity renders the recombination between photogenerated holes on the VB of CuS and photogenerated electrons on the CB of WO3 possible and easy, forming a direct Z-scheme in CuS-WO3. This result in that more electrons in the CB of CuS and holes in the VB of WO3 survived, and then participated in the photocatalytic degradation of RhB, showing an increased activity. (c) 2017 Elsevier B.V. All rights reserved.
关键词[WOS]: HETEROJUNCTION PHOTOCATALYSTS ;  CHARGE-TRANSFER ;  TIO2 ;  DEGRADATION ;  TEMPERATURE ;  REDUCTION ;  GRAPHENE ;  JUNCTION ;  DYES ;  FILM
语种: 英语
WOS记录号: WOS:000410609400097
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150023
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Liaoning, Peoples R China
2.Pacific Northwest Natl Lab, Inst Integrated Catalysis, Richland, WA 99352 USA
3.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Song, Chundong,Wang, Xiang,Zhang, Jing,et al. Enhanced performance of direct Z-scheme CuS-WO3 system towards photocatalytic decomposition of organic pollutants under visible light[J]. APPLIED SURFACE SCIENCE,2017,425:788-795.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Song, Chundong]'s Articles
 [Wang, Xiang]'s Articles
 [Zhang, Jing]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Song, Chundong]‘s Articles
 [Wang, Xiang]‘s Articles
 [Zhang, Jing]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Powered by CSpace