Page 109 - 《精细化工》2020年第11期
P. 109
第 37 卷第 11 期 精 细 化 工 Vol.37, No.11
2020 年 11 月 FINE CHEMICALS Nov. 2020
功能材料
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K 掺杂 g-C N 污泥基复合材料的制备
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及其光催化性能
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马立标 ,张 宾 ,柳荣展 1,2 ,张 颖 ,詹丽凡
(1. 青岛大学 纺织服装学院,山东 青岛 266071;2. 山东省生态纺织协同创新中心,山东 青岛
266071)
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摘要:以水性油墨废水絮凝污泥、三聚氰胺和 K 2 CO 3 为原料,采用煅烧法制备了 K 掺杂石墨相氮化碳污泥基复
合材料(AC/K-CN),利用 XRD、UV-Vis DRS、FTIR、XPS、BET、SEM 和 PL 光谱对 AC/K-CN 的晶体结构、
形貌和光电性能进行了表征。可见光照射下,将 AC/K-CN 用于光催化降解阳离子蓝 X-GRRL。结果表明,
AC/K-CN 对阳离子蓝 X-GRRL 的光催化活性明显高于纯石墨相氮化碳(g-C 3 N 4 )或碳化污泥(AC),这归因于
AC/K-CN 有效的电子-空穴分离。与 AC 和纯 g-C 3 N 4 相比,AC/K-CN 在模拟日光下对质量浓度为 20 mg/L 的阳
离子蓝 X-GRRL 的降解率分别提高了 43.17%和 46.76%。
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关键词:g-C 3 N 4 ;K 掺杂;可见光光催化;水性油墨废水;复合材料;碳化污泥
中图分类号:X703.1; O643.36; O644.1 文献标识码:A 文章编号:1003-5214 (2020) 11-2255-07
Preparation and photocatalytic performance of potassium
doped g-C 3N 4 sludge-based composite
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MA Libiao , ZHANG Bin , LIU Rongzhan , ZHANG Ying , ZHAN Lifan
(1. College of Textiles and Clothing, Qingdao University, Qingdao 266071, Shandong, China; 2. Shandong Ecological
Textile Collaborative Innovation Center, Qingdao 266071, Shandong, China)
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Abstract: K doped graphitic phase carbon nitride sludge-based composite (AC/K-CN) was prepared by
calcination method using flocculation sludge of water-based ink wastewater, melamine and potassium
carbonate as raw materials. The crystal structure, morphology and photoelectric properties of the composite
were characterized by XRD, UV-Vis DRS, FTIR, XPS, BET, SEM and PL. The composite was applied to
remove cationic blue X-GRRL from aqueous solution under visible-light irradiation. The results showed
that the photocatalytic activity of AC/K-CN on cationic blue X-GRRL was higher than that of pure graphite
phase carbon nitride (g-C 3N 4) or carbonized sludge (AC), which is attributed to the effective electron-hole
separation of the composite. Compared with AC and pure g-C 3N 4, AC/K-CN composite increased the
degradation rate of cationic blue X-GRRL with a mass concentration of 20 mg/L by 43.17% and 46.76%
under simulated sunlight.
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Key words: g-C 3N 4; K doping; visible light photocatalysis; water-based ink wastewater; composite;
carbonized sludge
随着现代工业的快速发展,环境污染与能源危 环境问题中尤为突出,而印染废水的水质则更为复
机问题日益严重,已成为人类生存和发展面临的两 杂。众所周知,印染废水具有高色度、高有机物、
个重大挑战 [1-2] 。因此,解决这两大问题是人类实现 高化学需氧量(COD)、高生化需氧量(BOD)等
[3]
可持续发展的迫切需求。其中,水污染问题在众多 特点 ,对环境污染极其严重,若不加以治理,将
收稿日期:2020-08-10; 定用日期:2020-09-27; DOI: 10.13550/j.jxhg.20200740
基金项目:国家自然科学基金(51508285);山东省重点研发计划(重大科技创新工程)项目(2019JZZY010507,2019JZZY020301)
作者简介:马立标(1995—),男,硕士生,E-mail:915602919@qq.com。联系人:张 宾(1983—),男,讲师,E-mail:bin-208@163.com。