Surface Composition of Silver Nanocubes and Their Influence on Morphological Stabilization and Catalytic Performance in Ethylene Epoxidation
Source abstract
Abstract
Silver nanocubes with exposed (100) facets are reported to have improved selectivity with respect to their spherical counterparts for ethylene epoxidation. In the present study, we observe that the surface composition of the silver nanocubes also has a critical impact on activity. Detailed investigation of the surface composition of silver nanocubes has been carried out using HRTEM, SEM, EDS, EELS, and EFTEM. Surfaces of silver nanocubes are "passivated" by chloride, and its removal is essential to achieve any catalytic activity. However, the surface chloride is apparently essential for stabilizing the cubic morphology of the particles. Attempts were made to understand the competing effects of the surface species for retaining the morphology of the nanocubes and on their catalytic activity in ethylene epoxidation.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Quantum Dots Synthesis And Properties · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
The Dow Chemical Company, 2301 N. Brazosport Blvd., Freeport, Texas 77541, United States
Imaging and Characterization Lab, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Kingdom of Saudi Arabia
Funding
Dow Chemical Company
References (33)
Show source-provided references
1. 10.1039/a608414a10.1039/a608414a ↗
2. 10.1002/cssc.20130039810.1002/cssc.201300398 ↗
3. 10.1021/jp051066p10.1021/jp051066p ↗
4. 10.1557/mrs.2014.16710.1557/mrs.2014.167 ↗
5. 10.1021/nl049525610.1021/nl0495256 ↗
6. 10.1021/ar300209w10.1021/ar300209w ↗
7. 10.1002/anie.20131059710.1002/anie.201310597 ↗
8. 10.1021/ja801210s10.1021/ja801210s ↗
9. 10.1016/j.jcat.2011.08.00410.1016/j.jcat.2011.08.004 ↗
10. 10.1002/cctc.20090023110.1002/cctc.200900231 ↗
11. 10.1002/cctc.20100016310.1002/cctc.201000163 ↗
12. 10.1021/ja803818k10.1021/ja803818k ↗
13. 10.1002/anie.20046220810.1002/anie.200462208 ↗
14. 10.1071/CH1124110.1071/CH11241 ↗
15. Egerton, R. F.Transmission Electron Energy Loss Spectrometry in Materials Science and the EELS Atlas;Wiley-VCH Verlag GmbH & Co. KGaA:Weinheim, Germany, 2005; pp21–47.10.1002/3527605495.ch2 ↗
16. 10.1126/science.107722910.1126/science.1077229 ↗
17. 10.1038/nprot.2007.32610.1038/nprot.2007.326 ↗
18. 10.1021/ja046037r10.1021/ja046037r ↗
19. 10.1021/nl048912c10.1021/nl048912c ↗
20. 10.1039/C4CS00136B10.1039/C4CS00136B ↗
21. 10.1016/j.cplett.2008.07.07710.1016/j.cplett.2008.07.077 ↗
22. 10.1021/jp201008810.1021/jp2010088 ↗
23. 10.1002/chem.20040092710.1002/chem.200400927 ↗
24. 10.1002/cctc.20120069010.1002/cctc.201200690 ↗
25. 10.1039/b302620e10.1039/b302620e ↗
26. 10.1021/ja906954f10.1021/ja906954f ↗
27. Leapman, R.Transmission Electron Energy Loss Spectrometry in Materials Science and the EELS Atlas;Wiley-VCH Verlag GmbH & Co. KGaA:Weinheim, Germany, 2005; pp49–96.10.1002/3527605495.ch3 ↗
28. 10.1016/j.apsusc.2012.04.15010.1016/j.apsusc.2012.04.150 ↗
29. 10.1103/PhysRevB.78.16541910.1103/PhysRevB.78.165419 ↗
30. 10.1007/s10562-012-0957-310.1007/s10562-012-0957-3 ↗
31. 10.1016/j.electacta.2010.10.06010.1016/j.electacta.2010.10.060 ↗
32. 10.1016/S0039-6028(98)00801-210.1016/S0039-6028(98)00801-2 ↗
33. 10.1021/ie010306u10.1021/ie010306u ↗