王新葵

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:化学学院

学科:物理化学

办公地点:大连理工大学西部新校区化工综合楼C202房间

联系方式:0411-84986073,15242633762

电子邮箱:wangxinkui@dlut.edu.cn

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Facile fabrication of mesoporous g-C3N4/TiO2 photocatalyst for efficient degradation of DNBP under visible light irradiation

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论文类型:期刊论文

发表时间:2017-12-31

发表刊物:APPLIED SURFACE SCIENCE

收录刊物:SCIE、EI、Scopus

卷号:426

页面范围:1271-1280

ISSN号:0169-4332

关键字:Melamine; PAA-Ti/TiO2; Mesoporous g-C3N4/TiO2; Thermal condensation; Photocatalysis

摘要:In this paper, a novel thermal condensation method was developed for preparing mesoporous g-C3N4/TiO2 composite by using PAA-Ti/TiO2 and melamine as co-precursors. This method can not only ensure the incorporation of TiO2 nanoparticles into g-C3N4 matrix but also lead to the formation of mesoporous structures. In the heating process, polyacrylate (PAA) in the PAA-Ti/TiO2 composites can volatilizeto produce carbonous gases and its volatilization temperature falls into the temperature range formelamine condensation, which makes PAA-Ti/TiO2 a suitable pore-forming agent for fabricating mesoporous g-C3N4/TiO2. The largest surface area for the fabricated mesoporous g-C3N4/TiO2 was found to be 268 m(2)g(-1), which was approximately 7 or 12 times higher than that of TiO2 or g-C3N4. The mesoporous g-C3N4/TiO2 composite exhibited excellent reproducibility and good performance in the photocatalytic decomposition of dinitro butyl phenol (DNBP) under visible-light illumination. The enhanced photocatalytic efficiency can be attributed to the synergetic effects of large surface area and the formation of heterojunction interface between g-C3N4 and TiO2. (C) 2017 Elsevier B.V. All rights reserved.