Boron-doped graphitic carbon nitride nanosheets for enhanced visible light photocatalytic water splitting

Supphasin Thaweesak; Songcan Wang; Miaoqiang Lyu; Mu Xiao; Piangjai Peerakiatkhajohn; Lianzhou Wang

doi:10.1039/c7dt00933j

Boron-doped graphitic carbon nitride nanosheets for enhanced visible light photocatalytic water splitting

Supphasin Thaweesak, Songcan Wang, Miaoqiang Lyu, Mu Xiao, Piangjai Peerakiatkhajohn, Lianzhou Wang

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

208 Scopus citations

Abstract

A new type of boron-doped graphitic carbon nitride (B-g-C₃N₄) nanosheets was prepared by a benign one-pot thermal polycondensation process. Systematic studies revealed that a B-doping amount of 1 at% into g-C₃N₄ (1at%B-g-C₃N₄) showed the best photocatalytic H₂ evolution activity of 1880 μmol h^-1 g^-1 under visible light irradiation (>400 nm), which is more than 12 times that of the pristine g-C₃N₄ bulk. Detailed characterizations revealed that the high photocatalytic performance could be attributed to the combination of band structure engineering and morphological control. B-doping not only reduces the band gap to absorb more visible light but also exhibits a higher surface area of B-g-C₃N₄ (49.47 m² g^-1) as compared to that of g-C₃N₄ bulk (8.24 m² g^-1), which subsequently improve the photocatalytic performance drastically. This work demonstrates a synergistic strategy to prepare efficient metal-free B-g-C₃N₄ nanosheets as a promising photocatalyst for H₂ evolution under visible light with good stability.

Original language	English
Pages (from-to)	10714-10720
Number of pages	7
Journal	Dalton Transactions
Volume	46
Issue number	32
DOIs	https://doi.org/10.1039/c7dt00933j
State	Published - 2017
Externally published	Yes

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title = "Boron-doped graphitic carbon nitride nanosheets for enhanced visible light photocatalytic water splitting",

abstract = "A new type of boron-doped graphitic carbon nitride (B-g-C3N4) nanosheets was prepared by a benign one-pot thermal polycondensation process. Systematic studies revealed that a B-doping amount of 1 at% into g-C3N4 (1at%B-g-C3N4) showed the best photocatalytic H2 evolution activity of 1880 μmol h-1 g-1 under visible light irradiation (>400 nm), which is more than 12 times that of the pristine g-C3N4 bulk. Detailed characterizations revealed that the high photocatalytic performance could be attributed to the combination of band structure engineering and morphological control. B-doping not only reduces the band gap to absorb more visible light but also exhibits a higher surface area of B-g-C3N4 (49.47 m2 g-1) as compared to that of g-C3N4 bulk (8.24 m2 g-1), which subsequently improve the photocatalytic performance drastically. This work demonstrates a synergistic strategy to prepare efficient metal-free B-g-C3N4 nanosheets as a promising photocatalyst for H2 evolution under visible light with good stability.",

author = "Supphasin Thaweesak and Songcan Wang and Miaoqiang Lyu and Mu Xiao and Piangjai Peerakiatkhajohn and Lianzhou Wang",

note = "Publisher Copyright: {\textcopyright} 2017 The Royal Society of Chemistry.",

year = "2017",

doi = "10.1039/c7dt00933j",

language = "英语",

volume = "46",

pages = "10714--10720",

journal = "Dalton Transactions",

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T1 - Boron-doped graphitic carbon nitride nanosheets for enhanced visible light photocatalytic water splitting

AU - Thaweesak, Supphasin

AU - Wang, Songcan

AU - Lyu, Miaoqiang

AU - Xiao, Mu

AU - Peerakiatkhajohn, Piangjai

AU - Wang, Lianzhou

PY - 2017

Y1 - 2017

N2 - A new type of boron-doped graphitic carbon nitride (B-g-C3N4) nanosheets was prepared by a benign one-pot thermal polycondensation process. Systematic studies revealed that a B-doping amount of 1 at% into g-C3N4 (1at%B-g-C3N4) showed the best photocatalytic H2 evolution activity of 1880 μmol h-1 g-1 under visible light irradiation (>400 nm), which is more than 12 times that of the pristine g-C3N4 bulk. Detailed characterizations revealed that the high photocatalytic performance could be attributed to the combination of band structure engineering and morphological control. B-doping not only reduces the band gap to absorb more visible light but also exhibits a higher surface area of B-g-C3N4 (49.47 m2 g-1) as compared to that of g-C3N4 bulk (8.24 m2 g-1), which subsequently improve the photocatalytic performance drastically. This work demonstrates a synergistic strategy to prepare efficient metal-free B-g-C3N4 nanosheets as a promising photocatalyst for H2 evolution under visible light with good stability.

AB - A new type of boron-doped graphitic carbon nitride (B-g-C3N4) nanosheets was prepared by a benign one-pot thermal polycondensation process. Systematic studies revealed that a B-doping amount of 1 at% into g-C3N4 (1at%B-g-C3N4) showed the best photocatalytic H2 evolution activity of 1880 μmol h-1 g-1 under visible light irradiation (>400 nm), which is more than 12 times that of the pristine g-C3N4 bulk. Detailed characterizations revealed that the high photocatalytic performance could be attributed to the combination of band structure engineering and morphological control. B-doping not only reduces the band gap to absorb more visible light but also exhibits a higher surface area of B-g-C3N4 (49.47 m2 g-1) as compared to that of g-C3N4 bulk (8.24 m2 g-1), which subsequently improve the photocatalytic performance drastically. This work demonstrates a synergistic strategy to prepare efficient metal-free B-g-C3N4 nanosheets as a promising photocatalyst for H2 evolution under visible light with good stability.

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U2 - 10.1039/c7dt00933j

DO - 10.1039/c7dt00933j

M3 - 文章

C2 - 28590476

AN - SCOPUS:85027408255

SN - 1477-9226

VL - 46

SP - 10714

EP - 10720

JO - Dalton Transactions

JF - Dalton Transactions

IS - 32

ER -

Boron-doped graphitic carbon nitride nanosheets for enhanced visible light photocatalytic water splitting

Abstract

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