个人信息
教师姓名：张永才
教师拼音名称：ZYC
电子邮箱：
入职时间：2003-06-01
所在单位：化学化工学院
职务：professor
学历：博士研究生毕业
办公地点：N111, New Chemistry Building, Yangzhou University, No.180 Siwangting Road, Yangzhou City
联系方式：zhangyc@yzu.edu.cn
学位：博士
职称：副高级
在职信息：在岗
硕士生导师
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所属院系： 化学化工学院
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学科：无机化学
其他联系方式
暂无内容
论文成果
Acid-treated g-C3N4 with improved photocatalytic performance in the reduction of aqueous Cr(VI) under visible-light
发布时间：2021-04-09 点击次数：
DOI码：10.1016/j.seppur.2014.12.041
所属单位：化学化工学院
教研室：无机教研室
发表刊物：Separation and Purification Technology
关键字：Graphitic carbon nitride；Acid-soaking treatment；Photocatalytic reduction；Hexavalent chromium
摘要：An alternative simple, economical and efficient acid-soaking method was proposed to improve the activity of g-C3N4 for photocatalytic reduction of aqueous Cr(VI) in this work. The improvement was achieved simply by soaking g-C3N4 (which was obtained by heating melamine in air at 550 °C for 4 h) in 5 mol/L HNO3 or HCl aqueous solution for 2 h (the HNO3 and HCl-treated samples were denoted as g-C3N4single bondHNO3 and g-C3N4single bondHCl, respectively). The compositions, structures, Brunner–Emmet–Teller (BET) specific surface areas, Zeta potentials and optical properties of g-C3N4, g-C3N4single bondHNO3 and g-C3N4single bondHCl were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, N2 adsorption/desorption isotherms, Zeta potential analyzer and UV–vis diffuse reflectance spectroscopy. The photocatalytic properties of g-C3N4, g-C3N4single bondHNO3 and g-C3N4single bondHCl were tested in the reduction of aqueous Cr(VI) under visible-light (λ > 420 nm) irradiation. It was observed that both g-C3N4single bondHNO3 and g-C3N4single bondHCl exhibited higher photocatalytic activity than g-C3N4. The higher photocatalytic activities of acid-treated samples may be attributed to their larger BET specific surface areas, positive surface charges and larger adsorption capacities for Cr(VI). Furthermore, the soaking treatment with 5 mol/L HNO3 aqueous solution can not only remove the Cr(III) species deposited on the surface of g-C3N4single bondHNO3 after use in photocatalytic reduction of aqueous Cr(VI), but also enhance the photocatalytic efficiency of g-C3N4single bondHNO3 in reuse.
合写作者：张倩,史琪伟,蔡振宇,杨占军
第一作者：张永才
论文类型：应用基础研究
论文编号：https://doi.org/10.1016/j.seppur.2014.12.041
学科门类：理学
一级学科：化学
文献类型：Research Atricle
卷号：142
页面范围：251-257
ISSN号：1383-5866
是否译文：否
发表时间：2015-03-04
收录刊物：SCI
