PMID- 28887563
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180103
LR  - 20181113
IS  - 2041-1723 (Electronic)
IS  - 2041-1723 (Linking)
VI  - 8
IP  - 1
DP  - 2017 Sep 8
TI  - The most active Cu facet for low-temperature water gas shift reaction.
PG  - 488
LID - 10.1038/s41467-017-00620-6 [doi]
LID - 488
AB  - Identification of the active site is important in developing rational design 
      strategies for solid catalysts but is seriously blocked by their structural 
      complexity. Here, we use uniform Cu nanocrystals synthesized by a 
      morphology-preserved reduction of corresponding uniform Cu(2)O nanocrystals in 
      order to identify the most active Cu facet for low-temperature water gas shift 
      (WGS) reaction. Cu cubes enclosed with 100 facets are very active in catalyzing 
      the WGS reaction up to 548 K while Cu octahedra enclosed with 111 facets are 
      inactive. The Cu-Cu suboxide (Cu(x)O, x >/= 10) interface of Cu(100) surface is the 
      active site on which all elementary surface reactions within the catalytic cycle 
      proceed smoothly. However, the formate intermediate was found stable at the 
      Cu-Cu(x)O interface of Cu(111) surface with consequent accumulation and poisoning 
      of the surface at low temperatures. Thereafter, Cu cubes-supported ZnO catalysts 
      are successfully developed with extremely high activity in low-temperature WGS 
      reaction.Nanocrystals display a variety of facets with different catalytic 
      activity. Here the authors identify the most active facet of copper nanocrystals 
      relevant to the low-temperature water gas shift reaction and further design zinc 
      oxide-copper nanocubes with exceptionally high catalytic activity.
FAU - Zhang, Zhenhua
AU  - Zhang Z
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China.
FAU - Wang, Sha-Sha
AU  - Wang SS
AD  - Dalian Institute of Chemical Physics, Chinese Academy of Sciences, University of 
      Chinese Academy of Sciences, Dalian, 116023, China.
FAU - Song, Rui
AU  - Song R
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China.
FAU - Cao, Tian
AU  - Cao T
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China.
FAU - Luo, Liangfeng
AU  - Luo L
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China.
FAU - Chen, Xuanye
AU  - Chen X
AD  - Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, 
      Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, 321004, 
      China.
FAU - Gao, Yuxian
AU  - Gao Y
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China.
FAU - Lu, Jiqing
AU  - Lu J
AD  - Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, 
      Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, 321004, 
      China.
FAU - Li, Wei-Xue
AU  - Li WX
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China.
AD  - Dalian Institute of Chemical Physics, Chinese Academy of Sciences, University of 
      Chinese Academy of Sciences, Dalian, 116023, China.
FAU - Huang, Weixin
AU  - Huang W
AUID- ORCID: 0000-0002-5025-3124
AD  - Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory 
      of Materials for Energy Conversion and Department of Chemical Physics, University 
      of Science and Technology of China, Hefei, 230026, China. huangwx@ustc.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20170908
PL  - England
TA  - Nat Commun
JT  - Nature communications
JID - 101528555
PMC - PMC5591213
COIS- The authors declare no competing financial interests.
EDAT- 2017/09/10 06:00
MHDA- 2017/09/10 06:01
PMCR- 2017/09/08
CRDT- 2017/09/10 06:00
PHST- 2017/01/21 00:00 [received]
PHST- 2017/07/13 00:00 [accepted]
PHST- 2017/09/10 06:00 [entrez]
PHST- 2017/09/10 06:00 [pubmed]
PHST- 2017/09/10 06:01 [medline]
PHST- 2017/09/08 00:00 [pmc-release]
AID - 10.1038/s41467-017-00620-6 [pii]
AID - 620 [pii]
AID - 10.1038/s41467-017-00620-6 [doi]
PST - epublish
SO  - Nat Commun. 2017 Sep 8;8(1):488. doi: 10.1038/s41467-017-00620-6.