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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202200756
|2 doi
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|a pubmed24n1123.xml
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|a (DE-627)NLM337138001
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|a (NLM)35181950
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|a DE-627
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|a eng
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|a Lin, Xi
|e verfasserin
|4 aut
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|a Fabrication of Flexible Mesoporous Black Nb2 O5 Nanofiber Films for Visible-Light-Driven Photocatalytic CO2 Reduction into CH4
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|c 2022
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|a Text
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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 21.04.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a Achieving high selectivity and conversion efficiency simultaneously is a challenge for visible-light-driven photocatalytic CO2 reduction into CH4 . Here, a facile nanofiber synthesis method and a new defect control strategy at room-temperature are reported for the fabrication of flexible mesoporous black Nb2 O5 nanofiber catalysts that contain abundant oxygen-vacancies and unsaturated Nb dual-sites, which are efficient towards photocatalytic production of CH4 . The oxygen-vacancy decreases the bandgap width of Nb2 O5 from 3.01-2.25 eV, which broadens the light-absorption range from ultraviolet to visible-light, and the dual sites in the mesopores can easily adsorb CO2 , so that the intermediate product of CO* can be spontaneously changed into *CHO. The formation of a highly stable NbCHO* intermediate at the dual sites is proposed to be the key feature determining selectivity. The preliminary results show that without using sacrificial agents and photosensitizers, the nanofiber catalyst achieves 64.8% selectivity for CH4 production with a high evolution rate of 19.5 µmol g-1 h-1 under visible-light. Furthermore, the flexible catalyst film can be directly used in devices, showing appealing and broadly commercial applications
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|a Journal Article
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|a electrospinning
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|a high selectivity of CH4
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|a mesoporous black Nb2O5 nanofibers
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|a photocatalytic CO2 reduction
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|a room-temperature defect regulation
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|a Xia, Shuhui
|e verfasserin
|4 aut
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1 |
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|a Zhang, Liang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yuanyuan
|e verfasserin
|4 aut
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1 |
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|a Sun, Songmei
|e verfasserin
|4 aut
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1 |
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|a Chen, Yuehui
|e verfasserin
|4 aut
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1 |
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|a Chen, Shuo
|e verfasserin
|4 aut
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1 |
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|a Ding, Bin
|e verfasserin
|4 aut
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1 |
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|a Yu, Jianyong
|e verfasserin
|4 aut
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| 700 |
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|a Yan, Jianhua
|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 34(2022), 16 vom: 21. Apr., Seite e2200756
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:16
|g day:21
|g month:04
|g pages:e2200756
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|u http://dx.doi.org/10.1002/adma.202200756
|3 Volltext
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