光敏剂敏化Cu-有机骨架对活性深蓝K-R的高效光催化降解

doi:10.13475/j.fzxb.20191202907

纺织学报 ›› 2020, Vol. 41 ›› Issue (10): 87-93.doi: 10.13475/j.fzxb.20191202907

光敏剂敏化Cu-有机骨架对活性深蓝K-R的高效光催化降解

李庆¹(), 管斌斌¹, 王雅¹, 刘天卉¹, 张洛红¹, 樊增禄²

1.西安工程大学环境与化学工程学院, 陕西西安 710048
2.西安工程大学功能性纺织材料及制品教育部重点实验室, 陕西西安 710048

收稿日期:2019-12-11 修回日期:2020-06-24 出版日期:2020-10-15 发布日期:2020-10-27
作者简介:李庆(1983—),男,副教授,博士。主要研究方向为功能性金属有机框架材料的构筑及对染料废水的处理。E-mail:liqingxpu1@163.com。
基金资助:
国家级大学生创新训练计划项目(201910709016);陕西省重点研发计划项目(2020GY-276);陕西省科技计划项目(2019GY-163);陕西省教育厅服务地方专项计划项目(19JC016);西安市科技计划项目(2019217114GXRC007CG008-GXYD7.1);西安工程大学研究生创新基金项目(chx2020023)

Photosensitizers sensitized Cu-organic framework for highly efficient photocatalytic degradation of Reactive Dark Blue K-R

LI Qing¹(), GUAN Binbin¹, WANG Ya¹, LIU Tianhui¹, ZHANG Luohong¹, FAN Zenglu²

1. College of Environmental & Chemical Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China
2. Key Laboratory of Functional Textile Materials and Products, Ministry of Education, Xi'an Polytechnic University, Xi'an, Shaanxi 710048, China

Received:2019-12-11 Revised:2020-06-24 Online:2020-10-15 Published:2020-10-27

摘要/Abstract

摘要：

针对活性染料废水引起的水污染,采用硝酸铜与4,4',4″-[1,3,5-苯基三(酰胺基)]三苯甲酸(H₃L)反应,制备了三维多孔的Cu-有机骨架(Cu-MOF)材料,对染料进行光催化降解。研究了Cu-MOF的热学性能,通过粉末X射线衍射分析确认了其结构特征。通过可见光吸收能力不同的甲基橙(MO)和亚甲基蓝(MB)对Cu-MOF进行敏化,制备了2种复合材料以提升光催化降解效能。研究表明:Cu-MOF及MO-Cu-MOF和MB-Cu-MOF(10 mg) 对40 mL 的34.02 mg/L的活性深蓝K-R的可见光催化降解效率分别为42.4%、76.2%和88.4%,光催化速率常数分别为0.029、0.082、0.122 h^-1,最佳pH值为8;5次光催化循环之后,MB-Cu-MOF对治性深蓝K-R的降解效率仍高达75.1%。

关键词: Cu-有机骨架, 光敏剂, 可见光催化降解, 活性染料, 印染废水

Abstract:

Three-dimensional porous Cu-organic skeleton material (Cu-MOF) was synthesized from the reaction of copper nitrate and 4,4',4″-[1,3,5-benzenetriyltris(carbonylimino)] trisbenzoic acid (H₃L) to address the challenge of water pollution caused by reactive dyes containing wastewater by virtue of photocatalytic degradation. The thermal weight loss properties of the Cu-MOF were studied by thermal weight loss analysis and the powder X-ray diffraction analysis to confirm its structural characteristics. Then, the Cu-MOF was sensitized by methyl orange (MO) and methylene blue (MB) with different visible light absorption capacity, providing two kinds of composites to improve the photocatalytic degradation efficiency. The studies reveal that Cu-MOF and its composites MO-Cu-MOF and MB-Cu-MOF (10 mg) performs the visible photocatalytic degradation efficiency of 42.4%, 76.2% and 88.4%, with corresponding photocatalytic rate constants of 0.029 h^-1, 0.082 h^-1 and 0.122 h^-1, respectively, towards Reactive Dark Blue K-R(RB13) and the optimal pH value is 8. After five cycles of photocatalytic degradation, the degradation efficiency of MB-Cu-MOF towards RB13 still reaches 75.1%.

Key words: Cu-organic framework, sensitization, visible photocatalytic degradation, reactive dye, dyeing waste water

中图分类号:

TS190.2

李庆, 管斌斌, 王雅, 刘天卉, 张洛红, 樊增禄. 光敏剂敏化Cu-有机骨架对活性深蓝K-R的高效光催化降解[J]. 纺织学报, 2020, 41(10): 87-93.

LI Qing, GUAN Binbin, WANG Ya, LIU Tianhui, ZHANG Luohong, FAN Zenglu. Photosensitizers sensitized Cu-organic framework for highly efficient photocatalytic degradation of Reactive Dark Blue K-R[J]. Journal of Textile Research, 2020, 41(10): 87-93.

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光敏剂敏化Cu-有机骨架对活性深蓝K-R的高效光催化降解

Photosensitizers sensitized Cu-organic framework for highly efficient photocatalytic degradation of Reactive Dark Blue K-R

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