| Title |
Exsolution trends and co-segregation aspects of self-grown catalyst nanoparticles in perovskites
|
|---|---|
| Published in |
Nature Communications, June 2017
|
| DOI | 10.1038/ncomms15967 |
| Pubmed ID | |
| Authors |
Ohhun Kwon, Sivaprakash Sengodan, Kyeounghak Kim, Gihyeon Kim, Hu Young Jeong, Jeeyoung Shin, Young-Wan Ju, Jeong Woo Han, Guntae Kim |
| Abstract |
In perovskites, exsolution of transition metals has been proposed as a smart catalyst design for energy applications. Although there exist transition metals with superior catalytic activity, they are limited by their ability to exsolve under a reducing environment. When a doping element is present in the perovskite, it is often observed that the surface segregation of the doping element is changed by oxygen vacancies. However, the mechanism of co-segregation of doping element with oxygen vacancies is still an open question. Here we report trends in the exsolution of transition metal (Mn, Co, Ni and Fe) on the PrBaMn2O5+δ layered perovskite oxide related to the co-segregation energy. Transmission electron microscopic observations show that easily reducible cations (Mn, Co and Ni) are exsolved from the perovskite depending on the transition metal-perovskite reducibility. In addition, using density functional calculations we reveal that co-segregation of B-site dopant and oxygen vacancies plays a central role in the exsolution. |
Mendeley readers
The data shown below were compiled from readership statistics for 300 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 300 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 58 | 19% |
| Researcher | 48 | 16% |
| Student > Master | 41 | 14% |
| Student > Bachelor | 27 | 9% |
| Student > Doctoral Student | 24 | 8% |
| Other | 37 | 12% |
| Unknown | 65 | 22% |
| Readers by discipline | Count | As % |
|---|---|---|
| Materials Science | 70 | 23% |
| Chemistry | 44 | 15% |
| Chemical Engineering | 37 | 12% |
| Engineering | 24 | 8% |
| Energy | 15 | 5% |
| Other | 16 | 5% |
| Unknown | 94 | 31% |
Attention Score in Context
This research output has an Altmetric Attention Score of 29. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 18 July 2017.
All research outputs
#1,141,121
of 22,982,639 outputs
Outputs from Nature Communications
#17,259
of 47,305 outputs
Outputs of similar age
#25,080
of 315,496 outputs
Outputs of similar age from Nature Communications
#437
of 1,041 outputs
Altmetric has tracked 22,982,639 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 95th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 47,305 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 55.9. This one has gotten more attention than average, scoring higher than 63% of its peers.
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We're also able to compare this research output to 1,041 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 57% of its contemporaries.