Yan Xin , Gao Qiang , Hui Xiaoyan , Yan Congxiang , Ai Tao , Wang Zhenjun , Sun Guodong , Su Xinghua , Zhao Peng
{"title":"易球磨法制备g-C3N4/MoS2纳米片异质结及其可见光催化性能","authors":"Yan Xin , Gao Qiang , Hui Xiaoyan , Yan Congxiang , Ai Tao , Wang Zhenjun , Sun Guodong , Su Xinghua , Zhao Peng","doi":"10.1016/S1875-5372(18)30226-1","DOIUrl":null,"url":null,"abstract":"<div><p>The g-C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> nanosheet heterojunction was prepared via a facile ball milling method. The microstructure and morphology of the composite were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The photocatalytic activities were evaluated by the degradation of organic Rhodamine B (RhB) under visible light irradiation. The results indicate that MoS<sub>2</sub> nanosheets are successfully coupled into g-C<sub>3</sub>N<sub>4</sub> to form a C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> heterojunction. The kinetic constant of RhB degradation with g-C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> nanosheets-2 wt% heterojunction (0.0368 min<sup>−1</sup>) is about 4.3 times as high as that of the bulk g-C<sub>3</sub>N<sub>4</sub> (0.00840 min<sup>−1</sup>). The enhanced photocatalytic activities can be mainly ascribed to the efficient separation and transportation of photo-induced electron-hole pairs. The possible photocatalytic mechanism of composites was proposed according to the light trapping experiment.</p></div>","PeriodicalId":21056,"journal":{"name":"稀有金属材料与工程","volume":"47 10","pages":"Pages 3015-3020"},"PeriodicalIF":0.6000,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30226-1","citationCount":"16","resultStr":"{\"title\":\"Fabrication of g-C3N4/MoS2 Nanosheet Heterojunction by Facile Ball Milling Method and Its Visible Light Photocatalytic Performance\",\"authors\":\"Yan Xin , Gao Qiang , Hui Xiaoyan , Yan Congxiang , Ai Tao , Wang Zhenjun , Sun Guodong , Su Xinghua , Zhao Peng\",\"doi\":\"10.1016/S1875-5372(18)30226-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The g-C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> nanosheet heterojunction was prepared via a facile ball milling method. The microstructure and morphology of the composite were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The photocatalytic activities were evaluated by the degradation of organic Rhodamine B (RhB) under visible light irradiation. The results indicate that MoS<sub>2</sub> nanosheets are successfully coupled into g-C<sub>3</sub>N<sub>4</sub> to form a C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> heterojunction. The kinetic constant of RhB degradation with g-C<sub>3</sub>N<sub>4</sub>/MoS<sub>2</sub> nanosheets-2 wt% heterojunction (0.0368 min<sup>−1</sup>) is about 4.3 times as high as that of the bulk g-C<sub>3</sub>N<sub>4</sub> (0.00840 min<sup>−1</sup>). The enhanced photocatalytic activities can be mainly ascribed to the efficient separation and transportation of photo-induced electron-hole pairs. The possible photocatalytic mechanism of composites was proposed according to the light trapping experiment.</p></div>\",\"PeriodicalId\":21056,\"journal\":{\"name\":\"稀有金属材料与工程\",\"volume\":\"47 10\",\"pages\":\"Pages 3015-3020\"},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2018-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1875-5372(18)30226-1\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"稀有金属材料与工程\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1875537218302261\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"稀有金属材料与工程","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1875537218302261","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Fabrication of g-C3N4/MoS2 Nanosheet Heterojunction by Facile Ball Milling Method and Its Visible Light Photocatalytic Performance
The g-C3N4/MoS2 nanosheet heterojunction was prepared via a facile ball milling method. The microstructure and morphology of the composite were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) spectroscopy. The photocatalytic activities were evaluated by the degradation of organic Rhodamine B (RhB) under visible light irradiation. The results indicate that MoS2 nanosheets are successfully coupled into g-C3N4 to form a C3N4/MoS2 heterojunction. The kinetic constant of RhB degradation with g-C3N4/MoS2 nanosheets-2 wt% heterojunction (0.0368 min−1) is about 4.3 times as high as that of the bulk g-C3N4 (0.00840 min−1). The enhanced photocatalytic activities can be mainly ascribed to the efficient separation and transportation of photo-induced electron-hole pairs. The possible photocatalytic mechanism of composites was proposed according to the light trapping experiment.
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