Highly Enhanced Photoreductive Degradation of Polybromodiphenyl Ethers with g-C3N4/TiO2 under Visible Light Irradiation
Ye, Weidong1; Shao, Yingying1; Hu, Xuefeng2; Liu, Chulin1; Sun, Chunyan1
2017-04-01
发表期刊NANOMATERIALS
ISSN2079-4991
卷号7期号:4
摘要A series of high activity photocatalysts g-C3N4-TiO2 were synthesized by simple one-pot thermal transformation method and characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy, Brunauer-Emmett-Teller (BET) surface area, and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis-DRS). The g-C3N4-TiO2 samples show highly improved photoreductive capability for the degradation of polybromodiphenyl ethers compared with g-C3N4 under visible light irradiation. Among all the hybrids, 0.02-C3N4-TiO2 with 2 wt % g-C3N4 loaded shows the highest reaction rate, which is 15 times as high as that in bare g-C3N4. The well-matched band gaps in heterojunction g-C3N4-TiO2 not only strengthen the absorption intensity, but also show more effective charge carrier separation, which results in the highly enhanced photoreductive performance under visible light irradiation. The trapping experiments show that holetrapping agents largely affect the reaction rate. The rate of electron accumulation in the conductive band is the rate-determining step in the degradation reaction. A possible photoreductive mechanism has been proposed.
关键词G-c3n4 Tio2 Photoreductive Polybromodiphenyl Ethers Visible Light
DOI10.3390/nano7040076
项目资助者National Science Foundation of China(21107073 ; 21477080)
收录类别SCI
关键词[WOS]CHARGE SEPARATION ; PHOTOCATALYST ; DEBROMINATION ; NANOPARTICLES ; POLLUTANTS
文章类型Article
语种英语
WOS研究方向Science & Technology - Other Topics ; Materials Science
WOS记录号WOS:000404048100005
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/22540
专题中科院海岸带环境过程与生态修复重点实验室
作者单位1.Shaoxing Univ, Dept Chem, Shaoxing 312000, Zhejiang, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Envirenmental Proc & Ecol Re, Yantai 264003, Shandong, Peoples R China
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Ye, Weidong,Shao, Yingying,Hu, Xuefeng,et al. Highly Enhanced Photoreductive Degradation of Polybromodiphenyl Ethers with g-C3N4/TiO2 under Visible Light Irradiation[J]. NANOMATERIALS,2017,7(4).
APA Ye, Weidong,Shao, Yingying,Hu, Xuefeng,Liu, Chulin,&Sun, Chunyan.(2017).Highly Enhanced Photoreductive Degradation of Polybromodiphenyl Ethers with g-C3N4/TiO2 under Visible Light Irradiation.NANOMATERIALS,7(4).
MLA Ye, Weidong,et al."Highly Enhanced Photoreductive Degradation of Polybromodiphenyl Ethers with g-C3N4/TiO2 under Visible Light Irradiation".NANOMATERIALS 7.4(2017).
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