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Sulfur and potassiu...
Sulfur and potassium co-doped graphitic carbon nitride for highly enhanced photocatalytic hydrogen evolution
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- Chen, Lu (author)
- Fuzhou Univ, Coll Chem, Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
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- Zhu, Dongyan (author)
- Fuzhou Univ, Coll Chem, Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
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- Li, Jintao (author)
- Fuzhou Univ, Coll Chem, Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
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- Wang, Xuxu (author)
- Fuzhou Univ, Coll Chem, Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
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- Zhu, Jie-Fang (author)
- Uppsala universitet,Strukturkemi
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- Francis, Paul S. (author)
- Deakin Univ, Fac Sci Engn & Built Environm, Sch Life & Environm Sci, Waurn Ponds, Vic 3216, Australia
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- Zheng, Yuanhui (author)
- Fuzhou Univ, Coll Chem, Key Lab Photocatalysis Energy & Environm, Fuzhou 350116, Fujian, Peoples R China
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(creator_code:org_t)
- Elsevier BV, 2020
- 2020
- English.
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In: Applied Catalysis B. - : Elsevier BV. - 0926-3373 .- 1873-3883. ; 273
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Modifying the structure of a photocatalyst to tailor its electronic and physicochemical properties is an effective approach for efficient photocatalysis. Herein, we demonstrate that co-doping non-metal (S) and metal (K) atoms into graphitic carbon nitride (g-C3N4) provides excellent visible-light photocatalytic hydrogen production activity of 8.78 mmol g−1 h−1, which is 98 times higher than that of pristine g-C3N4 (0.09 mmol g−1 h−1). The apparent quantum efficiency of the S+K-co-doped g-C3N4 reaches 70 % at 420 nm. This outstanding photocatalytic performance attributed to an increased specific surface area from 6.78 to 74.23 cm3 g−1, which reduced the recombination of photogenerated charge carriers and enhanced conductivity. Various characterizations are undertaken to elucidate the S+K-co-doped g-C3N4 photocatalytic mechanism. Our work not only demonstrates a facile, eco-friendly and scalable strategy for the synthesis of S+K-co-doped g-C3N4 photocatalysts, but also opens a new avenue for the design of co-doped photocatalysts.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Keyword
- Sulfur/potassium-co-doping
- Graphitic carbon nitride
- Photocatalysis
- Hydrogen evolution
Publication and Content Type
- ref (subject category)
- art (subject category)
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