{"title":"通过 O-空位定制暴露 Mo 位点实现高效可见光光催化固氮的原子级薄 Bi2MoO6 纳米片材","authors":"Qingqiang Meng*, Chihao Cao, Jing Wang, Limeili Tian, Yangyang Huang, Miaomiao Yang, Meng Wang, Bowen Cong* and Ying Zhang*, ","doi":"10.1021/acsanm.4c03138","DOIUrl":null,"url":null,"abstract":"<p >Efficient charge transfer and exposure of reactive sites represent critical factors in the enhancement of photocatalytic nitrogen fixation. Herein, an atomic-thickness phosphate-doped Bi<sub>2</sub>MoO<sub>6</sub> photocatalyst was fabricated successfully. The introduction of PO<sub>4</sub><sup>3–</sup> doping induced lattice distortions within the Mo–O octahedron, resulting in the generation of oxygen vacancies and exposure of Mo sites that served as active centers for nitrogen activation. Additionally, the incorporation of PO<sub>4</sub><sup>3–</sup> dopants led to a reduced surface work function of Bi<sub>2</sub>MoO<sub>6</sub>, thereby effectively facilitating carrier migration. Furthermore, there is a notable reduction in carrier transport distance from the bulk to its surface due to the atomic sheet structure. As a consequence, the PO<sub>4</sub><sup>3–</sup>-doped Bi<sub>2</sub>MoO<sub>6</sub> exhibited a significantly enhanced photocatalytic nitrogen fixation activity compared to the undoped sample. Moreover, PO<sub>4</sub><sup>3–</sup>-doped Bi<sub>2</sub>MoO<sub>6</sub> showed improved photocatalytic performance for the reduction of Cr(VI). This work offers valuable theoretical insights for the development of highly efficient photocatalysts.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Atomically Thin Bi2MoO6 Nanosheets for Efficient Visible-Light Photocatalytic Nitrogen Fixation via O-Vacancy Tailored Exposure of Mo Sites\",\"authors\":\"Qingqiang Meng*, Chihao Cao, Jing Wang, Limeili Tian, Yangyang Huang, Miaomiao Yang, Meng Wang, Bowen Cong* and Ying Zhang*, \",\"doi\":\"10.1021/acsanm.4c03138\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Efficient charge transfer and exposure of reactive sites represent critical factors in the enhancement of photocatalytic nitrogen fixation. Herein, an atomic-thickness phosphate-doped Bi<sub>2</sub>MoO<sub>6</sub> photocatalyst was fabricated successfully. The introduction of PO<sub>4</sub><sup>3–</sup> doping induced lattice distortions within the Mo–O octahedron, resulting in the generation of oxygen vacancies and exposure of Mo sites that served as active centers for nitrogen activation. Additionally, the incorporation of PO<sub>4</sub><sup>3–</sup> dopants led to a reduced surface work function of Bi<sub>2</sub>MoO<sub>6</sub>, thereby effectively facilitating carrier migration. Furthermore, there is a notable reduction in carrier transport distance from the bulk to its surface due to the atomic sheet structure. As a consequence, the PO<sub>4</sub><sup>3–</sup>-doped Bi<sub>2</sub>MoO<sub>6</sub> exhibited a significantly enhanced photocatalytic nitrogen fixation activity compared to the undoped sample. Moreover, PO<sub>4</sub><sup>3–</sup>-doped Bi<sub>2</sub>MoO<sub>6</sub> showed improved photocatalytic performance for the reduction of Cr(VI). This work offers valuable theoretical insights for the development of highly efficient photocatalysts.</p>\",\"PeriodicalId\":6,\"journal\":{\"name\":\"ACS Applied Nano Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Nano Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsanm.4c03138\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.4c03138","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Atomically Thin Bi2MoO6 Nanosheets for Efficient Visible-Light Photocatalytic Nitrogen Fixation via O-Vacancy Tailored Exposure of Mo Sites
Efficient charge transfer and exposure of reactive sites represent critical factors in the enhancement of photocatalytic nitrogen fixation. Herein, an atomic-thickness phosphate-doped Bi2MoO6 photocatalyst was fabricated successfully. The introduction of PO43– doping induced lattice distortions within the Mo–O octahedron, resulting in the generation of oxygen vacancies and exposure of Mo sites that served as active centers for nitrogen activation. Additionally, the incorporation of PO43– dopants led to a reduced surface work function of Bi2MoO6, thereby effectively facilitating carrier migration. Furthermore, there is a notable reduction in carrier transport distance from the bulk to its surface due to the atomic sheet structure. As a consequence, the PO43–-doped Bi2MoO6 exhibited a significantly enhanced photocatalytic nitrogen fixation activity compared to the undoped sample. Moreover, PO43–-doped Bi2MoO6 showed improved photocatalytic performance for the reduction of Cr(VI). This work offers valuable theoretical insights for the development of highly efficient photocatalysts.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.