Noble-Metal-Free NixSy-C3N5 Hybrid Nanosheet with Highly Efficient Photocatalytic Performance

The construction of highly efficient, low-cost and noble-metal-free photocatalysts depends on photocatalytic technology. Recently, N-rich C3N5 has been explored as a novel carbon nitride material with a much narrower band gap (~2.2 eV) than that of traditional C3N4 (~2.7 eV). Planting noble-metal-fr...

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Bibliographic Details
Published inCatalysts Vol. 11; no. 9; p. 1089
Main Authors Han, Lixiao, Peng, Cong, Huang, Jinming, Sun, Linhao, Wang, Shengyao, Zhang, Xiaohu, Yang, Yi
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2021
Subjects
Agreements
Carbon
Carbon nitride
Catalysts
Catalytic activity
Chemical reactions
Efficiency
H2 production
Hydrogen production
Investigations
Low cost
Low temperature
Morphology
Nanosheets
Nickel
NixSy-C3N5 hybrid
NO removal
Noble metals
noble-metal-free catalyst
Photocatalysis
Semiconductors
Spectrum analysis
Sulfur
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Summary:The construction of highly efficient, low-cost and noble-metal-free photocatalysts depends on photocatalytic technology. Recently, N-rich C3N5 has been explored as a novel carbon nitride material with a much narrower band gap (~2.2 eV) than that of traditional C3N4 (~2.7 eV). Planting noble-metal-free active sites on C3N5 to improve its photocatalytic activity is of great significance. Herein, 2D NixSy nanosheet is facially loaded on 2D C3N5 using a hydrothermal procedure under a low temperature. Due to the quick separation of photogenerated carries between C3N5 and NixSy, this inexpensive noble-metal-free NixSy-C3N5 hybrid nanosheet is highly efficient and stable as a multifunctional catalyst in various applications, including photocatalytic H2 production from water and NO removal. Impressively, the apparent quantum yield (AQY) value for H2 production reaches 37.0% (at 420 nm) on optimal NixSy-C3N5 hybrids, which is much higher than that of Pt-C3N5 material. This work opens an avenue to the fabrication of low-cost and noble-metal-free catalysts for multifunctional photocatalytic applications.
ISSN:2073-4344
2073-4344
DOI:10.3390/catal11091089