Haiping Li , Guoan Wang , Quanhua Deng , Wenxuan Hu , Wanguo Hou
{"title":"金属醇配位促进铋基半导体中铋(III)的还原,从而提高光催化活性","authors":"Haiping Li , Guoan Wang , Quanhua Deng , Wenxuan Hu , Wanguo Hou","doi":"10.1016/j.apcatb.2023.123652","DOIUrl":null,"url":null,"abstract":"<div><p>Metal ion doping is an extensively researched method to enhance photocatalytic activity of bismuth-based semiconductors, but function of the metal ions need be further clarified. Herein, metal-alcohol coordination was evidenced to promote reduction of Bi<sup>III</sup> in Bi-based semiconductors (e.g., Bi<sub>2</sub>MoO<sub>6</sub> hierarchical microspheres) to generated oxygen vacancies (Ovs) and Bi metal (Bi<sup>0</sup>). Ovs and Bi<sup>0</sup>, rather than widely recognized doping metal ions, play a key role for remarkable enhancement of photocatalytic activity of Bi<sub>2</sub>MoO<sub>6</sub>, for example of ∼16-fold higher photocatalytic nitrogen reduction activity, which arises from that the Ovs and Bi<sup>0</sup> can enhance photoexcited charge separation and work as surface active sites. The Ovs possess much greater efficacy than the Bi<sup>0</sup>. Formation of Bi<sup>0</sup> also induces prominent morphological variation of the microspheres. This work discloses an interesting but neglected phenomenon in alcohothermal synthesis of “metal-doped” Bi-based semiconductors and aims at drawing high attention of relevant researchers.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":null,"pages":null},"PeriodicalIF":20.2000,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Metal-alcohol coordination promoted reduction of bismuth (III) in bismuth-based semiconductors for enhanced photocatalytic activity\",\"authors\":\"Haiping Li , Guoan Wang , Quanhua Deng , Wenxuan Hu , Wanguo Hou\",\"doi\":\"10.1016/j.apcatb.2023.123652\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Metal ion doping is an extensively researched method to enhance photocatalytic activity of bismuth-based semiconductors, but function of the metal ions need be further clarified. Herein, metal-alcohol coordination was evidenced to promote reduction of Bi<sup>III</sup> in Bi-based semiconductors (e.g., Bi<sub>2</sub>MoO<sub>6</sub> hierarchical microspheres) to generated oxygen vacancies (Ovs) and Bi metal (Bi<sup>0</sup>). Ovs and Bi<sup>0</sup>, rather than widely recognized doping metal ions, play a key role for remarkable enhancement of photocatalytic activity of Bi<sub>2</sub>MoO<sub>6</sub>, for example of ∼16-fold higher photocatalytic nitrogen reduction activity, which arises from that the Ovs and Bi<sup>0</sup> can enhance photoexcited charge separation and work as surface active sites. The Ovs possess much greater efficacy than the Bi<sup>0</sup>. Formation of Bi<sup>0</sup> also induces prominent morphological variation of the microspheres. This work discloses an interesting but neglected phenomenon in alcohothermal synthesis of “metal-doped” Bi-based semiconductors and aims at drawing high attention of relevant researchers.</p></div>\",\"PeriodicalId\":244,\"journal\":{\"name\":\"Applied Catalysis B: Environmental\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":20.2000,\"publicationDate\":\"2023-12-22\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis B: Environmental\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S092633732301295X\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis B: Environmental","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S092633732301295X","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Metal-alcohol coordination promoted reduction of bismuth (III) in bismuth-based semiconductors for enhanced photocatalytic activity
Metal ion doping is an extensively researched method to enhance photocatalytic activity of bismuth-based semiconductors, but function of the metal ions need be further clarified. Herein, metal-alcohol coordination was evidenced to promote reduction of BiIII in Bi-based semiconductors (e.g., Bi2MoO6 hierarchical microspheres) to generated oxygen vacancies (Ovs) and Bi metal (Bi0). Ovs and Bi0, rather than widely recognized doping metal ions, play a key role for remarkable enhancement of photocatalytic activity of Bi2MoO6, for example of ∼16-fold higher photocatalytic nitrogen reduction activity, which arises from that the Ovs and Bi0 can enhance photoexcited charge separation and work as surface active sites. The Ovs possess much greater efficacy than the Bi0. Formation of Bi0 also induces prominent morphological variation of the microspheres. This work discloses an interesting but neglected phenomenon in alcohothermal synthesis of “metal-doped” Bi-based semiconductors and aims at drawing high attention of relevant researchers.
期刊介绍:
Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including:
1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources.
2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes.
3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts.
4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells.
5.Catalytic reactions that convert wastes into useful products.
6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts.
7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems.
8.New catalytic combustion technologies and catalysts.
9.New catalytic non-enzymatic transformations of biomass components.
The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.