journal article·2020-02-12

Elucidating the Nature of the Cu(I) Active Site in CuO/TiO2 for Excellent Low-Temperature CO Oxidation

Yarong Fang, Xiao Chi, Li Li, Ji Yang, Shoujie Liu, Xingxu Lu, Wen Xiao, Liming Wang, Zhu Luo, Weiwei Yang, Siyu Hu, Juxia Xiong, Son Hoang, Hongtao Deng, Fudong Liu, Lizhi Zhang, Puxian Gao, Jun Ding, Yanbing Guo

Publisher page

Abstract

Stabilized Cu+ species have been widely considered as catalytic active sites in composite copper catalysts for catalytic reactions with industrial importance. However, few examples comprehensively explicated the origin of stabilized Cu+ in a low-cost and widely investigated CuO/TiO2 system. In this study, mass producible CuO/TiO2 catalysts with interface-stabilized Cu+ were prepared, which showed excellent low-temperature CO oxidation activity. A thorough characterization and theoretical calculations proved that the strong charge-transfer effect and Ti–O–Cu hybridization in Ti-doped CuO(111) at the CuO/TiO2 interface contributed to the formation and stabilization of Cu+ species. The CO molecule adsorbed on Cu+ and reacted directly with Ti doping-promoted active lattice oxygen via a Mars–van Krevelen mechanism, leading to the enhanced low-temperature activity.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental and Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China

Singapore Synchrotron Light Source National University of Singapore, 5 Research Link, 117603, Singapore

Department of Chemical, Materials and Biomolecular Engineering, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269-3136, United States

Department of Materials Science and Engineering, National University of Singapore, 117575, Singapore

CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, Institute of High Energy Physics Department of Materials Science and Engineering, Chinese Academy of Sciences, Beijing 100049, China

Department of Civil, Environmental, and Construction Engineering, Catalysis Cluster for Renewable Energy and Chemical Transformations (REACT), NanoScience Technology Center, University of Central Florida, Orlando, Florida 32816, United States

Funding

State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · National Natural Science Foundation of China · National Science Foundation · Recruitment Program of Global Young Experts · National Engineering Laboratory for Mobile Source Emission Control Technology

References (61)

Show source-provided references
1. 10.1021/acs.chemrev.5b0048210.1021/acs.chemrev.5b00482 ↗
2. 10.1126/science.aal357310.1126/science.aal3573 ↗
3. 10.1002/cctc.20150012310.1002/cctc.201500123 ↗
4. 10.1021/ja076823710.1021/ja0768237 ↗
5. 10.1021/acsami.8b0236710.1021/acsami.8b02367 ↗
6. 10.1021/acs.jpcc.7b0205210.1021/acs.jpcc.7b02052 ↗
7. 10.1021/jacs.5b0745110.1021/jacs.5b07451 ↗
8. 10.1021/ja408506y10.1021/ja408506y ↗
9. 10.1021/acscatal.5b0266610.1021/acscatal.5b02666 ↗
10. 10.1021/acsami.8b1049610.1021/acsami.8b10496 ↗
11. 10.1021/acsami.5b0630210.1021/acsami.5b06302 ↗
12. 10.1021/acsami.8b0552810.1021/acsami.8b05528 ↗
13. 10.1021/la301684h10.1021/la301684h ↗
14. 10.1021/acsami.6b0057810.1021/acsami.6b00578 ↗
15. 10.1016/j.susc.2016.02.01410.1016/j.susc.2016.02.014 ↗
16. 10.1002/anie.20150453810.1002/anie.201504538 ↗
17. 10.1016/j.apcatb.2019.03.07310.1016/j.apcatb.2019.03.073 ↗
18. 10.1002/anie.20140243510.1002/anie.201402435 ↗
19. 10.1002/anie.20150911510.1002/anie.201509115 ↗
20. 10.1016/j.jcat.2016.03.00910.1016/j.jcat.2016.03.009 ↗
21. 10.1016/j.apcatb.2015.04.02110.1016/j.apcatb.2015.04.021 ↗
22. 10.1039/c3cp54273d10.1039/c3cp54273d ↗
23. 10.1021/jp108556u10.1021/jp108556u ↗
24. 10.1016/j.jcat.2012.02.01010.1016/j.jcat.2012.02.010 ↗
25. 10.1016/j.jcat.2017.06.02810.1016/j.jcat.2017.06.028 ↗
26. 10.1021/acsami.5b0649510.1021/acsami.5b06495 ↗
27. 10.1021/jp811030910.1021/jp8110309 ↗
28. 10.1039/c7ta00924k10.1039/c7ta00924k ↗
29. 10.1021/nn204588810.1021/nn2045888 ↗
30. 10.1021/jp806839210.1021/jp8068392 ↗
31. 10.1021/jp992090410.1021/jp9920904 ↗
32. 10.1103/physrevb.49.134610.1103/physrevb.49.1346 ↗
33. 10.1039/c5cy02125a10.1039/c5cy02125a ↗
34. 10.1063/1.167868010.1063/1.1678680 ↗
35. 10.1016/j.saa.2009.09.00910.1016/j.saa.2009.09.009 ↗
36. 10.1051/jcp:199922910.1051/jcp:1999229 ↗
37. 10.1021/acscatal.6b0058910.1021/acscatal.6b00589 ↗
38. 10.1039/c5cy00929d10.1039/c5cy00929d ↗
39. 10.1016/s0167-5729(97)00011-310.1016/s0167-5729(97)00011-3 ↗
40. 10.1103/physrevb.40.571510.1103/physrevb.40.5715 ↗
41. 10.1021/jp046874f10.1021/jp046874f ↗
42. 10.1038/s41557-018-0201-x10.1038/s41557-018-0201-x ↗
43. 10.1016/j.apcatb.2017.03.00710.1016/j.apcatb.2017.03.007 ↗
44. 10.1021/es301661r10.1021/es301661r ↗
45. 10.1002/anie.20171060510.1002/anie.201710605 ↗
46. 10.1021/cs501490910.1021/cs5014909 ↗
47. 10.1038/s41929-019-0226-610.1038/s41929-019-0226-6 ↗
48. 10.1021/acsami.6b1384310.1021/acsami.6b13843 ↗
49. 10.1016/j.jcat.2009.02.01210.1016/j.jcat.2009.02.012 ↗
50. 10.1021/ja073926g10.1021/ja073926g ↗
51. 10.1016/j.jcat.2009.10.00710.1016/j.jcat.2009.10.007 ↗
52. 10.1021/acscatal.7b0160010.1021/acscatal.7b01600 ↗
53. 10.1021/acscatal.8b0403510.1021/acscatal.8b04035 ↗
54. 10.1016/j.cej.2019.04.04910.1016/j.cej.2019.04.049 ↗
55. 10.1016/j.jcat.2016.06.00910.1016/j.jcat.2016.06.009 ↗
56. 10.1021/jp301197s10.1021/jp301197s ↗
57. 10.1021/jp072243k10.1021/jp072243k ↗
58. 10.1021/jp508487x10.1021/jp508487x ↗
59. 10.1021/jacs.5b0701110.1021/jacs.5b07011 ↗
60. 10.1016/j.apsusc.2013.09.09110.1016/j.apsusc.2013.09.091 ↗
61. 10.1021/acsami.7b0184410.1021/acsami.7b01844 ↗