Abstract
The dearth of an efficient, robust, abundant and cost-effective water oxidation catalyst is debatably the major hurdle for the technological advancement of artificial photosynthesis devices. Herein, a three dimensional (3D) cobalt-based coordination polymer {[Co 3 (pyz)(fa) 3 (dmso) 2 ]·2H 2 O} n , (1) (pyz = pyrazine, fa = fumarate, dmso = dimethyl sulfoxide) has been synthesized and demonstrated to act as an efficient electrocatalyst towards water oxidation at neutral pH. Compound 1 displays a stair-like arrangement parallel to the b-axis, with the cobalt clusters arranged in a zigzag fashion, and contains small, honeycomb-like channels parallel to the c-axis. Compound 1 shows a remarkable activity for water oxidation and attains a current density of 1 mA.cm −2 at low overpotential (η = 257 mV) with a Tafel slope value of 80.5 mV.dec −1 . This high performance of 1 in catalysing the water oxidation reaction is attributed to its unique 3-D architecture. The results of electrochemical investigations, including long-term and controlled potential electrolysis, are anticipated to guide the forthcoming advancement in creating efficient, cheap and noble metal (Pt/Ru/Ir) free catalysts for the water oxidation reaction.
| Original language | English |
|---|---|
| Pages (from-to) | 269-275 |
| Number of pages | 7 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 545 |
| DOIs | |
| Publication status | Published - 1 Jun 2019 |
Keywords
- Cobalt
- Electrocatalyst
- Overpotential
- Turnover frequency
- Water oxidation
Cite this
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A trinuclear cobalt-based coordination polymer as an efficient oxygen evolution electrocatalyst at neutral pH. / Ibrahim, Shaista; Shehzadi, Kiran; Iqbal, Bushra; Abbas, Saghir; Turner, David R.; Nadeem, Muhammad Arif.
In: Journal of Colloid and Interface Science, Vol. 545, 01.06.2019, p. 269-275.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - A trinuclear cobalt-based coordination polymer as an efficient oxygen evolution electrocatalyst at neutral pH
AU - Ibrahim, Shaista
AU - Shehzadi, Kiran
AU - Iqbal, Bushra
AU - Abbas, Saghir
AU - Turner, David R.
AU - Nadeem, Muhammad Arif
PY - 2019/6/1
Y1 - 2019/6/1
N2 - The dearth of an efficient, robust, abundant and cost-effective water oxidation catalyst is debatably the major hurdle for the technological advancement of artificial photosynthesis devices. Herein, a three dimensional (3D) cobalt-based coordination polymer {[Co 3 (pyz)(fa) 3 (dmso) 2 ]·2H 2 O} n , (1) (pyz = pyrazine, fa = fumarate, dmso = dimethyl sulfoxide) has been synthesized and demonstrated to act as an efficient electrocatalyst towards water oxidation at neutral pH. Compound 1 displays a stair-like arrangement parallel to the b-axis, with the cobalt clusters arranged in a zigzag fashion, and contains small, honeycomb-like channels parallel to the c-axis. Compound 1 shows a remarkable activity for water oxidation and attains a current density of 1 mA.cm −2 at low overpotential (η = 257 mV) with a Tafel slope value of 80.5 mV.dec −1 . This high performance of 1 in catalysing the water oxidation reaction is attributed to its unique 3-D architecture. The results of electrochemical investigations, including long-term and controlled potential electrolysis, are anticipated to guide the forthcoming advancement in creating efficient, cheap and noble metal (Pt/Ru/Ir) free catalysts for the water oxidation reaction.
AB - The dearth of an efficient, robust, abundant and cost-effective water oxidation catalyst is debatably the major hurdle for the technological advancement of artificial photosynthesis devices. Herein, a three dimensional (3D) cobalt-based coordination polymer {[Co 3 (pyz)(fa) 3 (dmso) 2 ]·2H 2 O} n , (1) (pyz = pyrazine, fa = fumarate, dmso = dimethyl sulfoxide) has been synthesized and demonstrated to act as an efficient electrocatalyst towards water oxidation at neutral pH. Compound 1 displays a stair-like arrangement parallel to the b-axis, with the cobalt clusters arranged in a zigzag fashion, and contains small, honeycomb-like channels parallel to the c-axis. Compound 1 shows a remarkable activity for water oxidation and attains a current density of 1 mA.cm −2 at low overpotential (η = 257 mV) with a Tafel slope value of 80.5 mV.dec −1 . This high performance of 1 in catalysing the water oxidation reaction is attributed to its unique 3-D architecture. The results of electrochemical investigations, including long-term and controlled potential electrolysis, are anticipated to guide the forthcoming advancement in creating efficient, cheap and noble metal (Pt/Ru/Ir) free catalysts for the water oxidation reaction.
KW - Cobalt
KW - Electrocatalyst
KW - Overpotential
KW - Turnover frequency
KW - Water oxidation
UR - http://www.scopus.com/inward/record.url?scp=85062944741&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2019.03.018
DO - 10.1016/j.jcis.2019.03.018
M3 - Article
VL - 545
SP - 269
EP - 275
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
ER -