Multifunctional nano-heterogeneous Ni(OH)2/NiFe catalysts on silicon photoanode toward efficient water and urea oxidation

Sol A. Lee; Jin Wook Yang; Tae Hyung Lee; Ik Jae Park; Changyeon Kim; Sung Hyun Hong; Hyungsoo Lee; Sungkyun Choi; Jooho Moon; Soo Young Kim; Jin Young Kim; Ho Won Jang

doi:10.1016/j.apcatb.2022.121765

Multifunctional nano-heterogeneous Ni(OH)₂/NiFe catalysts on silicon photoanode toward efficient water and urea oxidation

Sol A. Lee, Jin Wook Yang, Tae Hyung Lee, Ik Jae Park, Changyeon Kim, Sung Hyun Hong, Hyungsoo Lee, Sungkyun Choi, Jooho Moon, Soo Young Kim, Jin Young Kim, Ho Won Jang

Department of Materials Science and Engineering

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

2 Citations (Scopus)

Abstract

Exploiting inexhaustible free energy from the sun to produce clean and sustainable fuels is an attractive route toward the heavily polluted earth and energy shortage. Photoelectrochemical cell is strategic energy device because the generated fuels can be stored and used on-demand. Herein, we present the fabrication of Si photoelectrodes with efficient charge separation and transfer using metal-insulator-semiconductor heterostructures for energy-rich fuel production via photoelectrochemical water and urea oxidation. With controls of the native SiO_x insulator layer and catalytic NiFe metal layer, Si photoelectrode exhibits a photovoltage of 530 mV and a photocurrent density of 33.3 mA cm⁻² at 1.23 V versus reversible hydrogen electrode. Further employed Ni(OH)₂ catalysts allow Si photoanode to achieve fill factor of 25.73% and solar-to-hydrogen conversion efficiency of 10.8% with a perovskite/Si tandem solar cell. The fabricated Ni(OH)₂/NiFe/n-Si photoanode shows considerable performances toward urea oxidation. Our work presents new insights into sunlight-assisted hydrogen production using wastewater.

Original language	English
Article number	121765
Journal	Applied Catalysis B: Environmental
Volume	317
DOIs	https://doi.org/10.1016/j.apcatb.2022.121765
Publication status	Published - 2022 Nov 15

Bibliographical note

Funding Information:
S.A.L. and J.W.Y. contributed equally to this work. This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government MSIT ( 2021R1A2B5B3001851, 2021R1A4A302787811, 2018M3D1A1058793 ). This work was also supported by the KRISS ( Korea Research Institute of Standards and Science ) MPI Lab. Program. S.A.L. acknowledges the Sejong Science Fellowship through the National Research Foundation of Korea funded by the Korea government MSIT ( 2021R1C1C2006142 ). J.W.Y. acknowledges the Basic Science Research Program through NRF by the Ministry of Education ( 2021R1A6A13046700 ). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work.

Publisher Copyright:
© 2022 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Catalysis
Environmental Science(all)
Process Chemistry and Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.apcatb.2022.121765

Cite this

@article{ca828539b4694e56b3818c6ed88ec323,

title = "Multifunctional nano-heterogeneous Ni(OH)2/NiFe catalysts on silicon photoanode toward efficient water and urea oxidation",

abstract = "Exploiting inexhaustible free energy from the sun to produce clean and sustainable fuels is an attractive route toward the heavily polluted earth and energy shortage. Photoelectrochemical cell is strategic energy device because the generated fuels can be stored and used on-demand. Herein, we present the fabrication of Si photoelectrodes with efficient charge separation and transfer using metal-insulator-semiconductor heterostructures for energy-rich fuel production via photoelectrochemical water and urea oxidation. With controls of the native SiOx insulator layer and catalytic NiFe metal layer, Si photoelectrode exhibits a photovoltage of 530 mV and a photocurrent density of 33.3 mA cm−2 at 1.23 V versus reversible hydrogen electrode. Further employed Ni(OH)2 catalysts allow Si photoanode to achieve fill factor of 25.73% and solar-to-hydrogen conversion efficiency of 10.8% with a perovskite/Si tandem solar cell. The fabricated Ni(OH)2/NiFe/n-Si photoanode shows considerable performances toward urea oxidation. Our work presents new insights into sunlight-assisted hydrogen production using wastewater.",

author = "Lee, {Sol A.} and Yang, {Jin Wook} and Lee, {Tae Hyung} and Park, {Ik Jae} and Changyeon Kim and Hong, {Sung Hyun} and Hyungsoo Lee and Sungkyun Choi and Jooho Moon and Kim, {Soo Young} and Kim, {Jin Young} and Jang, {Ho Won}",

note = "Funding Information: S.A.L. and J.W.Y. contributed equally to this work. This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government MSIT ( 2021R1A2B5B3001851, 2021R1A4A302787811, 2018M3D1A1058793 ). This work was also supported by the KRISS ( Korea Research Institute of Standards and Science ) MPI Lab. Program. S.A.L. acknowledges the Sejong Science Fellowship through the National Research Foundation of Korea funded by the Korea government MSIT ( 2021R1C1C2006142 ). J.W.Y. acknowledges the Basic Science Research Program through NRF by the Ministry of Education ( 2021R1A6A13046700 ). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = nov,

day = "15",

doi = "10.1016/j.apcatb.2022.121765",

language = "English",

volume = "317",

journal = "Applied Catalysis B: Environmental",

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T1 - Multifunctional nano-heterogeneous Ni(OH)2/NiFe catalysts on silicon photoanode toward efficient water and urea oxidation

AU - Lee, Sol A.

AU - Yang, Jin Wook

AU - Lee, Tae Hyung

AU - Park, Ik Jae

AU - Kim, Changyeon

AU - Hong, Sung Hyun

AU - Lee, Hyungsoo

AU - Choi, Sungkyun

AU - Moon, Jooho

AU - Kim, Soo Young

AU - Kim, Jin Young

AU - Jang, Ho Won

N1 - Funding Information: S.A.L. and J.W.Y. contributed equally to this work. This work was supported by the National Research Foundation of Korea (NRF) funded by the Korea government MSIT ( 2021R1A2B5B3001851, 2021R1A4A302787811, 2018M3D1A1058793 ). This work was also supported by the KRISS ( Korea Research Institute of Standards and Science ) MPI Lab. Program. S.A.L. acknowledges the Sejong Science Fellowship through the National Research Foundation of Korea funded by the Korea government MSIT ( 2021R1C1C2006142 ). J.W.Y. acknowledges the Basic Science Research Program through NRF by the Ministry of Education ( 2021R1A6A13046700 ). The Inter-University Semiconductor Research Center and Institute of Engineering Research at Seoul National University provided research facilities for this work. Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/11/15

Y1 - 2022/11/15

N2 - Exploiting inexhaustible free energy from the sun to produce clean and sustainable fuels is an attractive route toward the heavily polluted earth and energy shortage. Photoelectrochemical cell is strategic energy device because the generated fuels can be stored and used on-demand. Herein, we present the fabrication of Si photoelectrodes with efficient charge separation and transfer using metal-insulator-semiconductor heterostructures for energy-rich fuel production via photoelectrochemical water and urea oxidation. With controls of the native SiOx insulator layer and catalytic NiFe metal layer, Si photoelectrode exhibits a photovoltage of 530 mV and a photocurrent density of 33.3 mA cm−2 at 1.23 V versus reversible hydrogen electrode. Further employed Ni(OH)2 catalysts allow Si photoanode to achieve fill factor of 25.73% and solar-to-hydrogen conversion efficiency of 10.8% with a perovskite/Si tandem solar cell. The fabricated Ni(OH)2/NiFe/n-Si photoanode shows considerable performances toward urea oxidation. Our work presents new insights into sunlight-assisted hydrogen production using wastewater.

AB - Exploiting inexhaustible free energy from the sun to produce clean and sustainable fuels is an attractive route toward the heavily polluted earth and energy shortage. Photoelectrochemical cell is strategic energy device because the generated fuels can be stored and used on-demand. Herein, we present the fabrication of Si photoelectrodes with efficient charge separation and transfer using metal-insulator-semiconductor heterostructures for energy-rich fuel production via photoelectrochemical water and urea oxidation. With controls of the native SiOx insulator layer and catalytic NiFe metal layer, Si photoelectrode exhibits a photovoltage of 530 mV and a photocurrent density of 33.3 mA cm−2 at 1.23 V versus reversible hydrogen electrode. Further employed Ni(OH)2 catalysts allow Si photoanode to achieve fill factor of 25.73% and solar-to-hydrogen conversion efficiency of 10.8% with a perovskite/Si tandem solar cell. The fabricated Ni(OH)2/NiFe/n-Si photoanode shows considerable performances toward urea oxidation. Our work presents new insights into sunlight-assisted hydrogen production using wastewater.

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