Na Tian , Hongwei Huang , Shuobo Wang , Tierui Zhang , Xin Du , Yihe Zhang
{"title":"面电荷诱导耦合依赖的界面光电荷分离:以BiOI/g-C3N4 p-n结为例","authors":"Na Tian , Hongwei Huang , Shuobo Wang , Tierui Zhang , Xin Du , Yihe Zhang","doi":"10.1016/j.apcatb.2020.118697","DOIUrl":null,"url":null,"abstract":"<div><p>Heterojunction photocatalyst fabrication benefits the improvement of photocatalytic activity. However, the influence of different coupling facets receives less attention. Herein, two p-n junctions with different coupling facets of BiOI, denoted as B001/CN002 and B110/CN002<sup>+</sup>, were constructed by a simple precipitation method. In B001/CN002, BiOI nanosheets parallel combined with g-C<sub>3</sub>N<sub>4</sub> with the {001} facet of BiOI and (002) plane of g-C<sub>3</sub>N<sub>4</sub>. After being treated by CTAB, the (002) plane of g-C<sub>3</sub>N<sub>4</sub> shows positive charge (g-C<sub>3</sub>N<sub>4</sub><sup>+</sup>), and the BiOI nanosheets were vertically assembled onto g-C<sub>3</sub>N<sub>4</sub><sup>+</sup>. The results of photodegradation on multiform industrial contaminants and antibiotic revealed that B001/CN002 shows much higher photoactivity than g-C<sub>3</sub>N<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub><sup>+</sup>, BiOI and B110/CN002<sup>+</sup>. The substantially facilitated charge separation and transfer at the interface of B001/CN002 promote the generation of <sup>1</sup>O<sub>2</sub> and <sup><img></sup>O<sub>2</sub><sup>−</sup>, accounting for the excellent photocatalytic activity. The study may provide a new perspective on designing heterostructured photocatalytic materials via facet-charge-induced interfacial engineering strategy.</p></div>","PeriodicalId":244,"journal":{"name":"Applied Catalysis B: Environmental","volume":"267 ","pages":"Article 118697"},"PeriodicalIF":20.2000,"publicationDate":"2020-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.apcatb.2020.118697","citationCount":"159","resultStr":"{\"title\":\"Facet-charge-induced coupling dependent interfacial photocharge separation: A case of BiOI/g-C3N4 p-n junction\",\"authors\":\"Na Tian , Hongwei Huang , Shuobo Wang , Tierui Zhang , Xin Du , Yihe Zhang\",\"doi\":\"10.1016/j.apcatb.2020.118697\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Heterojunction photocatalyst fabrication benefits the improvement of photocatalytic activity. However, the influence of different coupling facets receives less attention. Herein, two p-n junctions with different coupling facets of BiOI, denoted as B001/CN002 and B110/CN002<sup>+</sup>, were constructed by a simple precipitation method. In B001/CN002, BiOI nanosheets parallel combined with g-C<sub>3</sub>N<sub>4</sub> with the {001} facet of BiOI and (002) plane of g-C<sub>3</sub>N<sub>4</sub>. After being treated by CTAB, the (002) plane of g-C<sub>3</sub>N<sub>4</sub> shows positive charge (g-C<sub>3</sub>N<sub>4</sub><sup>+</sup>), and the BiOI nanosheets were vertically assembled onto g-C<sub>3</sub>N<sub>4</sub><sup>+</sup>. The results of photodegradation on multiform industrial contaminants and antibiotic revealed that B001/CN002 shows much higher photoactivity than g-C<sub>3</sub>N<sub>4</sub>, g-C<sub>3</sub>N<sub>4</sub><sup>+</sup>, BiOI and B110/CN002<sup>+</sup>. The substantially facilitated charge separation and transfer at the interface of B001/CN002 promote the generation of <sup>1</sup>O<sub>2</sub> and <sup><img></sup>O<sub>2</sub><sup>−</sup>, accounting for the excellent photocatalytic activity. The study may provide a new perspective on designing heterostructured photocatalytic materials via facet-charge-induced interfacial engineering strategy.</p></div>\",\"PeriodicalId\":244,\"journal\":{\"name\":\"Applied Catalysis B: Environmental\",\"volume\":\"267 \",\"pages\":\"Article 118697\"},\"PeriodicalIF\":20.2000,\"publicationDate\":\"2020-06-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.apcatb.2020.118697\",\"citationCount\":\"159\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis B: Environmental\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926337320301120\",\"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/S0926337320301120","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Facet-charge-induced coupling dependent interfacial photocharge separation: A case of BiOI/g-C3N4 p-n junction
Heterojunction photocatalyst fabrication benefits the improvement of photocatalytic activity. However, the influence of different coupling facets receives less attention. Herein, two p-n junctions with different coupling facets of BiOI, denoted as B001/CN002 and B110/CN002+, were constructed by a simple precipitation method. In B001/CN002, BiOI nanosheets parallel combined with g-C3N4 with the {001} facet of BiOI and (002) plane of g-C3N4. After being treated by CTAB, the (002) plane of g-C3N4 shows positive charge (g-C3N4+), and the BiOI nanosheets were vertically assembled onto g-C3N4+. The results of photodegradation on multiform industrial contaminants and antibiotic revealed that B001/CN002 shows much higher photoactivity than g-C3N4, g-C3N4+, BiOI and B110/CN002+. The substantially facilitated charge separation and transfer at the interface of B001/CN002 promote the generation of 1O2 and O2−, accounting for the excellent photocatalytic activity. The study may provide a new perspective on designing heterostructured photocatalytic materials via facet-charge-induced interfacial engineering strategy.
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.
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