In:
Advanced Science, Wiley, Vol. 4, No. 10 ( 2017-10)
Abstract:
This study has designed and implemented a library of hetero‐nanostructured catalysts, denoted as Pd@Nb 2 O 5 , comprised of size‐controlled Pd nanocrystals interfaced with Nb 2 O 5 nanorods. This study also demonstrates that the catalytic activity and selectivity of CO 2 reduction to CO and CH 4 products can be systematically tailored by varying the size of the Pd nanocrystals supported on the Nb 2 O 5 nanorods. Using large Pd nanocrystals, this study achieves CO and CH 4 production rates as high as 0.75 and 0.11 mol h −1 g Pd −1 , respectively. By contrast, using small Pd nanocrystals, a CO production rate surpassing 18.8 mol h −1 g Pd −1 is observed with 99.5% CO selectivity. These performance metrics establish a new milestone in the champion league of catalytic nanomaterials that can enable solar‐powered gas‐phase heterogeneous CO 2 reduction. The remarkable control over the catalytic performance of Pd@Nb 2 O 5 is demonstrated to stem from a combination of photothermal, electronic and size effects, which is rationally tunable through nanochemistry.
Type of Medium:
Online Resource
ISSN:
2198-3844
,
2198-3844
DOI:
10.1002/advs.201700252
Language:
English
Publisher:
Wiley
Publication Date:
2017
detail.hit.zdb_id:
2808093-2