Abstract
| Original language | English |
|---|---|
| Journal | Applied Catalysis B: Environmental |
| Volume | 225 |
| Pages (from-to) | 291-297 |
| ISSN | 0926-3373 |
| DOIs | |
| Publication status | Published - 2018 |
Keywords
- Single-atom catalyst
- Graphene
- Amorphous carbon
- Confined-interface-directed synthesis
- Chemical catalysis
Cite this
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Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon. / Xi, Jiangbo; Sun, Hongyu; Zhang, Zheye ; Duan, Xianming ; Xiao, Junwu; Xiao, Fei; Liu, Limin; Wang, Shuai.
In: Applied Catalysis B: Environmental, Vol. 225, 2018, p. 291-297.Research output: Contribution to journal › Journal article › Research › peer-review
TY - JOUR
T1 - Confined-interface-directed synthesis of Palladium single-atom catalysts on graphene/amorphous carbon
AU - Xi, Jiangbo
AU - Sun, Hongyu
AU - Zhang, Zheye
AU - Duan, Xianming
AU - Xiao, Junwu
AU - Xiao, Fei
AU - Liu, Limin
AU - Wang, Shuai
PY - 2018
Y1 - 2018
N2 - The maximized atomic efficiency of supported catalysts is highly desired in heterogeneous catalysis. Therefore, the design and development of active, stable, and atomic metal-based catalysts remains a formidable challenge. To tackle these problems, it is necessary to investigate the interaction between single atoms and supports. Theoretical calculations indicate that the Pd binding strength is higher on graphene/amorphous carbon (AC) than that on graphene or AC substrate. Based on these predictions, we present a facile confined-interface-directed synthesis route for the preparation of single-atom catalysts (SACs) in which Pd atoms are well-dispersed on the interface of double-shelled hollow carbon nanospheres with reduced graphene oxide (RGO) as the inner shell and AC as the outer shell. Owing to the synergetic effect of the RGO/AC confined interface and the atomically dispersed Pd, the as-made RGO@AC/Pd SAC achieves the maximum atomic efficiency (catalytic activity) of Pd species and exhibits an excellent stability in chemical catalysis. This confined-interface-directed synthesis method provides a novel direction to maximize the atomic efficiency, improve the activity, and enhance the stability of metal-based catalysts.
AB - The maximized atomic efficiency of supported catalysts is highly desired in heterogeneous catalysis. Therefore, the design and development of active, stable, and atomic metal-based catalysts remains a formidable challenge. To tackle these problems, it is necessary to investigate the interaction between single atoms and supports. Theoretical calculations indicate that the Pd binding strength is higher on graphene/amorphous carbon (AC) than that on graphene or AC substrate. Based on these predictions, we present a facile confined-interface-directed synthesis route for the preparation of single-atom catalysts (SACs) in which Pd atoms are well-dispersed on the interface of double-shelled hollow carbon nanospheres with reduced graphene oxide (RGO) as the inner shell and AC as the outer shell. Owing to the synergetic effect of the RGO/AC confined interface and the atomically dispersed Pd, the as-made RGO@AC/Pd SAC achieves the maximum atomic efficiency (catalytic activity) of Pd species and exhibits an excellent stability in chemical catalysis. This confined-interface-directed synthesis method provides a novel direction to maximize the atomic efficiency, improve the activity, and enhance the stability of metal-based catalysts.
KW - Single-atom catalyst
KW - Graphene
KW - Amorphous carbon
KW - Confined-interface-directed synthesis
KW - Chemical catalysis
U2 - 10.1016/j.apcatb.2017.11.057
DO - 10.1016/j.apcatb.2017.11.057
M3 - Journal article
VL - 225
SP - 291
EP - 297
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
SN - 0926-3373
ER -