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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202304130
|2 doi
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|a pubmed24n1196.xml
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|a (DE-627)NLM35904736X
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|a (NLM)37403556
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Hu, Yaning
|e verfasserin
|4 aut
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|a Enhancing Photocatalytic-Transfer Semi-Hydrogenation of Alkynes Over Pd/C3 N4 Through Dual Regulation of Nitrogen Defects and the Mott-Schottky Effect
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 12.10.2023
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2023 Wiley-VCH GmbH.
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|a The selective hydrogenation of alkynes is an important reaction; however, the catalytic activity and selectivity in this reaction are generally conflicting. In this study, ultrafine Pd nanoparticles (NPs) loaded on a graphite-like C3 N4 structure with nitrogen defects (Pd/DCN) are synthesized. The resulting Pd/DCN exhibits excellent photocatalytic performance in the transfer hydrogenation of alkynes with ammonia borane. The reaction rate and selectivity of Pd/DCN are superior to those of Pd/BCN (bulk C3 N4 without nitrogen defects) under visible-light irradiation. The characterization results and density functional theory calculations show that the Mott-Schottky effect in Pd/DCN can change the electronic density of the Pd NPs, and thus enhances the hydrogenation selectivity toward phenylacetylene. After 1 h, the hydrogenation selectivity of Pd/DCN reaches 95%, surpassing that of Pd/BCN (83%). Meanwhile, nitrogen defects in the supports improve the visible-light response and accelerate the transfer and separation of photogenerated charges to enhance the catalytic activity of Pd/DCN. Therefore, Pd/DCN exhibits higher efficiency under visible light, with a turnover frequency (TOF) of 2002 min-1 . This TOF is five times that of Pd/DCN under dark conditions and 1.5 times that of Pd/BCN. This study provides new insights into the rational design of high-performance photocatalytic transfer hydrogenation catalysts
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|a Journal Article
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|a Mott-Schottky interactions
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|a Pd/C3N4 catalyst
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|a nitrogen defects
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|a photocatalysis
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|a selective transfer hydrogenation
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|a Zhang, Shuo
|e verfasserin
|4 aut
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|a Zhang, Zedong
|e verfasserin
|4 aut
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|a Zhou, Hexin
|e verfasserin
|4 aut
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|a Li, Bing
|e verfasserin
|4 aut
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|a Sun, Zhiyi
|e verfasserin
|4 aut
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|a Hu, Xuemin
|e verfasserin
|4 aut
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|a Yang, Wenxiu
|e verfasserin
|4 aut
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|a Li, Xiaoyan
|e verfasserin
|4 aut
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|a Wang, Yu
|e verfasserin
|4 aut
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|a Liu, Shuhu
|e verfasserin
|4 aut
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|a Wang, Dingsheng
|e verfasserin
|4 aut
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|a Lin, Jie
|e verfasserin
|4 aut
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|a Chen, Wenxing
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Shuo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 41 vom: 19. Okt., Seite e2304130
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:41
|g day:19
|g month:10
|g pages:e2304130
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|u http://dx.doi.org/10.1002/adma.202304130
|3 Volltext
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|a GBV_ILN_350
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|a AR
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|d 35
|j 2023
|e 41
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|h e2304130
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