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

34 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

UN SDGs

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

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1016/j.ijhydene.2019.01.270

Cite this

@article{f2415c4b5ee4485b8d2a0ff5125a1c24,

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",

pages = "7216--7221",

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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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