Photocatalytic H2 evolution of porous silicon derived from magnesiothermic reduction of mesoporous SiO2

Hewei Sun; Jingjing Chen; Shan Liu; Dinesh Kumar Agrawal; Yang Zhao; Dajian Wang; Zhiyong Mao

doi:10.1016/j.ijhydene.2019.01.270

Photocatalytic H₂ evolution of porous silicon derived from magnesiothermic reduction of mesoporous SiO₂

Hewei Sun, Jingjing Chen, Shan Liu, Dinesh Kumar Agrawal, Yang Zhao, Dajian Wang, Zhiyong Mao

Materials Research Institute (MRI)

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

29 Scopus citations

Abstract

In this work, porous silicon (PSi) was synthesized by magnesiothermic reduction of mesoporous SiO₂ (MCM-41) and its photocatalytic hydrogen evolution performance was investigated. The unique mesoporous structure of PSi expands the band gap of silicon and shifts its conduction band to a more negative position. As a result, excellent photocatalytic water splitting efficiency of 604.7 μmol h⁻¹ g⁻¹ under visible-light radiation is recorded for the synthesized PSi photocatalysts without loading noble metal cocatalysts. This study presented a promising visible light response photocatalysts for the generation green renewable hydrogen energy basing on PSi material deriving from simple magnesiothermic reduction of mesoporous SiO₂.

Original language	English (US)
Pages (from-to)	7216-7221
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	44
Issue number	14
DOIs	https://doi.org/10.1016/j.ijhydene.2019.01.270
State	Published - Mar 15 2019

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

Access to Document

10.1016/j.ijhydene.2019.01.270

Cite this

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title = "Photocatalytic H2 evolution of porous silicon derived from magnesiothermic reduction of mesoporous SiO2",

abstract = "In this work, porous silicon (PSi) was synthesized by magnesiothermic reduction of mesoporous SiO2 (MCM-41) and its photocatalytic hydrogen evolution performance was investigated. The unique mesoporous structure of PSi expands the band gap of silicon and shifts its conduction band to a more negative position. As a result, excellent photocatalytic water splitting efficiency of 604.7 μmol h−1 g−1 under visible-light radiation is recorded for the synthesized PSi photocatalysts without loading noble metal cocatalysts. This study presented a promising visible light response photocatalysts for the generation green renewable hydrogen energy basing on PSi material deriving from simple magnesiothermic reduction of mesoporous SiO2.",

author = "Hewei Sun and Jingjing Chen and Shan Liu and Agrawal, {Dinesh Kumar} and Yang Zhao and Dajian Wang and Zhiyong Mao",

note = "Funding Information: We gratefully acknowledge the financial support by the National Natural Science Foundation of China (nos. 51777138 , 51802219 ), Natural Science Foundation of Tianjin City (nos. 18JCZDJC99700 , 18JCYBJC87400 and 18JCQNJC73900 ), Scientific Developing Foundation of Tianjin Education Commission (nos. 2017ZD14 and 2018KJ130 ), The 111 Project (D17003). Publisher Copyright: {\textcopyright} 2019 Hydrogen Energy Publications LLC",

year = "2019",

month = mar,

day = "15",

doi = "10.1016/j.ijhydene.2019.01.270",

language = "English (US)",

volume = "44",

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T1 - Photocatalytic H2 evolution of porous silicon derived from magnesiothermic reduction of mesoporous SiO2

AU - Sun, Hewei

AU - Chen, Jingjing

AU - Liu, Shan

AU - Agrawal, Dinesh Kumar

AU - Zhao, Yang

AU - Wang, Dajian

AU - Mao, Zhiyong

N1 - Funding Information: We gratefully acknowledge the financial support by the National Natural Science Foundation of China (nos. 51777138 , 51802219 ), Natural Science Foundation of Tianjin City (nos. 18JCZDJC99700 , 18JCYBJC87400 and 18JCQNJC73900 ), Scientific Developing Foundation of Tianjin Education Commission (nos. 2017ZD14 and 2018KJ130 ), The 111 Project (D17003). Publisher Copyright: © 2019 Hydrogen Energy Publications LLC

PY - 2019/3/15

Y1 - 2019/3/15

N2 - In this work, porous silicon (PSi) was synthesized by magnesiothermic reduction of mesoporous SiO2 (MCM-41) and its photocatalytic hydrogen evolution performance was investigated. The unique mesoporous structure of PSi expands the band gap of silicon and shifts its conduction band to a more negative position. As a result, excellent photocatalytic water splitting efficiency of 604.7 μmol h−1 g−1 under visible-light radiation is recorded for the synthesized PSi photocatalysts without loading noble metal cocatalysts. This study presented a promising visible light response photocatalysts for the generation green renewable hydrogen energy basing on PSi material deriving from simple magnesiothermic reduction of mesoporous SiO2.

AB - In this work, porous silicon (PSi) was synthesized by magnesiothermic reduction of mesoporous SiO2 (MCM-41) and its photocatalytic hydrogen evolution performance was investigated. The unique mesoporous structure of PSi expands the band gap of silicon and shifts its conduction band to a more negative position. As a result, excellent photocatalytic water splitting efficiency of 604.7 μmol h−1 g−1 under visible-light radiation is recorded for the synthesized PSi photocatalysts without loading noble metal cocatalysts. This study presented a promising visible light response photocatalysts for the generation green renewable hydrogen energy basing on PSi material deriving from simple magnesiothermic reduction of mesoporous SiO2.

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