Ag-Functionalized CuWO                         4                         /WO                         3                          nanocomposites for solar water splitting

R. Salimi; A. A. Sabbagh Alvani; B. T. Mei; N. Naseri; S. F. Du; G. Mul

doi:10.1039/c8nj05625k

Ag-Functionalized CuWO ₄ /WO ₃ nanocomposites for solar water splitting

R. Salimi, A. A. Sabbagh Alvani^*, B. T. Mei, N. Naseri, S. F. Du, G. Mul

^*Corresponding author for this work

Photocatalytic Synthesis

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Abstract

Ag-Functionalized CuWO ₄ /WO ₃ heterostructures were successfully prepared via a polyvinyl pyrrolidone (PVP)-assisted sol-gel (PSG) route. Thin films prepared via electrophoretic deposition were used as photoanodes for photoelectrochemical (PEC) water splitting. Compared to pristine CuWO ₄ and WO ₃ films, a significant enhancement of the photocurrent (3-4 times) at the thermodynamic potential for oxygen evolution (0.62 V vs. Ag/AgCl, pH 7) was obtained for the Ag-functionalized CuWO ₄ /WO ₃ photoanodes. The obtained enhancement is shown to be derived from a synergic contribution of heterostructure formation (CuWO ₄ /WO ₃ ) and improvements of light utilization by Ag-induced surface plasmon resonance (SPR) effects. Accordingly, a photocurrent of 0.205 mA cm ^-2 at 0.62 V vs. Ag/AgCl under neutral conditions (without hole scavengers) under front-side simulated AM1.5G illumination was achieved. A detailed analysis of the obtained PEC data alongside performed impedance measurements suggests that charge seperation is significantly improved for the prepared Ag-functionalized CuWO ₄ /WO ₃ photoanodes. Our work offers beneficial insights to design new plasmonic metal/heterostructured nanocomposites for energy conversion applications.

Original language	English
Pages (from-to)	2196-2203
Number of pages	8
Journal	New journal of chemistry
Volume	43
Issue number	5
DOIs	https://doi.org/10.1039/c8nj05625k
Publication status	Published - 7 Feb 2019

Keywords

22/4 OA procedure

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10.1039/c8nj05625k

c8nj05625kFinal published version, 5.3 MBLicence: Taverne

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title = "Ag-Functionalized CuWO 4 /WO 3 nanocomposites for solar water splitting",

abstract = " Ag-Functionalized CuWO 4 /WO 3 heterostructures were successfully prepared via a polyvinyl pyrrolidone (PVP)-assisted sol-gel (PSG) route. Thin films prepared via electrophoretic deposition were used as photoanodes for photoelectrochemical (PEC) water splitting. Compared to pristine CuWO 4 and WO 3 films, a significant enhancement of the photocurrent (3-4 times) at the thermodynamic potential for oxygen evolution (0.62 V vs. Ag/AgCl, pH 7) was obtained for the Ag-functionalized CuWO 4 /WO 3 photoanodes. The obtained enhancement is shown to be derived from a synergic contribution of heterostructure formation (CuWO 4 /WO 3 ) and improvements of light utilization by Ag-induced surface plasmon resonance (SPR) effects. Accordingly, a photocurrent of 0.205 mA cm -2 at 0.62 V vs. Ag/AgCl under neutral conditions (without hole scavengers) under front-side simulated AM1.5G illumination was achieved. A detailed analysis of the obtained PEC data alongside performed impedance measurements suggests that charge seperation is significantly improved for the prepared Ag-functionalized CuWO 4 /WO 3 photoanodes. Our work offers beneficial insights to design new plasmonic metal/heterostructured nanocomposites for energy conversion applications. ",

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author = "R. Salimi and {Sabbagh Alvani}, {A. A.} and Mei, {B. T.} and N. Naseri and Du, {S. F.} and G. Mul",

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Ag-Functionalized CuWO ₄ /WO ₃ nanocomposites for solar water splitting. / Salimi, R.; Sabbagh Alvani, A. A.; Mei, B. T. et al.
In: New journal of chemistry, Vol. 43, No. 5, 07.02.2019, p. 2196-2203.

Research output: Contribution to journal › Article › Academic › peer-review

TY - JOUR

T1 - Ag-Functionalized CuWO 4 /WO 3 nanocomposites for solar water splitting

AU - Salimi, R.

AU - Sabbagh Alvani, A. A.

AU - Mei, B. T.

AU - Naseri, N.

AU - Du, S. F.

AU - Mul, G.

PY - 2019/2/7

Y1 - 2019/2/7

N2 - Ag-Functionalized CuWO 4 /WO 3 heterostructures were successfully prepared via a polyvinyl pyrrolidone (PVP)-assisted sol-gel (PSG) route. Thin films prepared via electrophoretic deposition were used as photoanodes for photoelectrochemical (PEC) water splitting. Compared to pristine CuWO 4 and WO 3 films, a significant enhancement of the photocurrent (3-4 times) at the thermodynamic potential for oxygen evolution (0.62 V vs. Ag/AgCl, pH 7) was obtained for the Ag-functionalized CuWO 4 /WO 3 photoanodes. The obtained enhancement is shown to be derived from a synergic contribution of heterostructure formation (CuWO 4 /WO 3 ) and improvements of light utilization by Ag-induced surface plasmon resonance (SPR) effects. Accordingly, a photocurrent of 0.205 mA cm -2 at 0.62 V vs. Ag/AgCl under neutral conditions (without hole scavengers) under front-side simulated AM1.5G illumination was achieved. A detailed analysis of the obtained PEC data alongside performed impedance measurements suggests that charge seperation is significantly improved for the prepared Ag-functionalized CuWO 4 /WO 3 photoanodes. Our work offers beneficial insights to design new plasmonic metal/heterostructured nanocomposites for energy conversion applications.

AB - Ag-Functionalized CuWO 4 /WO 3 heterostructures were successfully prepared via a polyvinyl pyrrolidone (PVP)-assisted sol-gel (PSG) route. Thin films prepared via electrophoretic deposition were used as photoanodes for photoelectrochemical (PEC) water splitting. Compared to pristine CuWO 4 and WO 3 films, a significant enhancement of the photocurrent (3-4 times) at the thermodynamic potential for oxygen evolution (0.62 V vs. Ag/AgCl, pH 7) was obtained for the Ag-functionalized CuWO 4 /WO 3 photoanodes. The obtained enhancement is shown to be derived from a synergic contribution of heterostructure formation (CuWO 4 /WO 3 ) and improvements of light utilization by Ag-induced surface plasmon resonance (SPR) effects. Accordingly, a photocurrent of 0.205 mA cm -2 at 0.62 V vs. Ag/AgCl under neutral conditions (without hole scavengers) under front-side simulated AM1.5G illumination was achieved. A detailed analysis of the obtained PEC data alongside performed impedance measurements suggests that charge seperation is significantly improved for the prepared Ag-functionalized CuWO 4 /WO 3 photoanodes. Our work offers beneficial insights to design new plasmonic metal/heterostructured nanocomposites for energy conversion applications.

KW - 22/4 OA procedure

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ER -

Ag-Functionalized CuWO ₄ /WO ₃ nanocomposites for solar water splitting

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