Abstract
Ultrathin metal–organic framework (MOF) nanosheets (NSs) offer potential for many applications, but the synthetic strategies are largely limited to top-down, low-yield exfoliation methods. Herein, Ni–M–MOF (M=Fe, Al, Co, Mn, Zn, and Cd) NSs are reported with a thickness of only several atomic layers, prepared by a large-scale, bottom-up solvothermal method. The solvent mixture of N,N-dimethylacetamide and water plays key role in controlling the formation of these two-dimensional MOF NSs. The MOF NSs can be directly used as efficient electrocatalysts for the oxygen evolution reaction, in which the Ni–Fe–MOF NSs deliver a current density of 10 mA cm −2 at a low overpotential of 221 mV with a small Tafel slope of 56.0 mV dec −1 , and exhibit excellent stability for at least 20 h without obvious activity decay. Density functional theory calculations on the energy barriers for OER occurring at different metal sites confirm that Fe is the active site for OER at Ni–Fe–MOF NSs.
| Original language | English |
|---|---|
| Pages (from-to) | 7051-7056 |
| Number of pages | 6 |
| Journal | Angewandte Chemie - International Edition |
| Volume | 58 |
| Issue number | 21 |
| Early online date | 26 Mar 2019 |
| DOIs | |
| Publication status | Published - 20 May 2019 |
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Large-Scale, Bottom-Up Synthesis of Binary Metal–Organic Framework Nanosheets for Efficient Water Oxidation. / Li, Fei Long; Wang, Pengtang; Huang, Xiaoqing; Young, David James; Wang, Hui Fang; Braunstein, Pierre; Lang, Jian Ping.
In: Angewandte Chemie - International Edition, Vol. 58, No. 21, 20.05.2019, p. 7051-7056.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Large-Scale, Bottom-Up Synthesis of Binary Metal–Organic Framework Nanosheets for Efficient Water Oxidation
AU - Li, Fei Long
AU - Wang, Pengtang
AU - Huang, Xiaoqing
AU - Young, David James
AU - Wang, Hui Fang
AU - Braunstein, Pierre
AU - Lang, Jian Ping
PY - 2019/5/20
Y1 - 2019/5/20
N2 - Ultrathin metal–organic framework (MOF) nanosheets (NSs) offer potential for many applications, but the synthetic strategies are largely limited to top-down, low-yield exfoliation methods. Herein, Ni–M–MOF (M=Fe, Al, Co, Mn, Zn, and Cd) NSs are reported with a thickness of only several atomic layers, prepared by a large-scale, bottom-up solvothermal method. The solvent mixture of N,N-dimethylacetamide and water plays key role in controlling the formation of these two-dimensional MOF NSs. The MOF NSs can be directly used as efficient electrocatalysts for the oxygen evolution reaction, in which the Ni–Fe–MOF NSs deliver a current density of 10 mA cm −2 at a low overpotential of 221 mV with a small Tafel slope of 56.0 mV dec −1 , and exhibit excellent stability for at least 20 h without obvious activity decay. Density functional theory calculations on the energy barriers for OER occurring at different metal sites confirm that Fe is the active site for OER at Ni–Fe–MOF NSs.
AB - Ultrathin metal–organic framework (MOF) nanosheets (NSs) offer potential for many applications, but the synthetic strategies are largely limited to top-down, low-yield exfoliation methods. Herein, Ni–M–MOF (M=Fe, Al, Co, Mn, Zn, and Cd) NSs are reported with a thickness of only several atomic layers, prepared by a large-scale, bottom-up solvothermal method. The solvent mixture of N,N-dimethylacetamide and water plays key role in controlling the formation of these two-dimensional MOF NSs. The MOF NSs can be directly used as efficient electrocatalysts for the oxygen evolution reaction, in which the Ni–Fe–MOF NSs deliver a current density of 10 mA cm −2 at a low overpotential of 221 mV with a small Tafel slope of 56.0 mV dec −1 , and exhibit excellent stability for at least 20 h without obvious activity decay. Density functional theory calculations on the energy barriers for OER occurring at different metal sites confirm that Fe is the active site for OER at Ni–Fe–MOF NSs.
KW - electrocatalysis
KW - metal–organic framework
KW - nanosheets
KW - two-dimensional materials
KW - water electrooxidation
UR - http://www.scopus.com/inward/record.url?scp=85064639834&partnerID=8YFLogxK
U2 - 10.1002/anie.201902588
DO - 10.1002/anie.201902588
M3 - Article
VL - 58
SP - 7051
EP - 7056
JO - Angewandte Chemie
JF - Angewandte Chemie
SN - 1433-7851
IS - 21
ER -