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木质素基磁性炭的制备工艺优化

作者:时间:2017-08-24点击数:

PDF全文下载:2017040012

王犇, 朱现波

(青岛科技大学 环境与安全工程学院,山东 青岛 266042)

摘要: 采用浸渍-煅烧法制备了木质素基磁性炭非均相芬顿催化剂(LMC)。通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、X射线光电子能谱(XPS)对LMC表面形貌及物相组成进行了表征分析,并考察了LMC制备条件对罗丹明B降解性能的影响。结果表明:制备的最佳条件为Fe2+浓度107 mmol·L-1,草酸浓度321 mmol·L-1,浸渍时间4 h,煅烧温度900 ℃,煅烧时间2 h。最佳条件下制备的木质素基磁性炭催化剂对罗丹明B的降解率在15 min内达到了100%,并具有良好的重复使用性能。

关键词: 木质素; 非均相芬顿催化剂; 降解; 罗丹明B

中图分类号: X 703文献标志码: A

引用格式:王犇, 朱现波. 木质素基磁性炭的制备工艺优化\[J\]. 青岛科技大学学报(自然科学版), 2017, 38(4): 12-18.

WANG Ben, ZHU Xianbo. Optimization of preparation technology of ligninbased magnetic carbon\[J\]. Journal of Qingdao University of Science and Technology(Natural Science Edition), 2017, 38(4): 12-18.

Optimization of Preparation Technology of Ligninbased Magnetic Carbon

WANG Ben, ZHU Xianbo

(College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

Abstract: The lignin-based magnetic carbon (LMC) heterogeneous Fenton catalyst was preparaed by using impregnation-calcination method. The surface morphology and phase composition of LMC were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and the influence of preparation condition of the catalyst performance of LMC for the degradation of Rhodamine B was examined. The results showed that optimal conditions were: Fe2+concentration 107 mmol·L-1, oxalic acid concentration 321 mmol·L-1, impregnation time 4 h, calcination temperature 900 ℃, calcination time 2 h. The best degradation of Rhodamine B nearly 100% using the LMC prepared under optimal conditions, and the LMC has a good reusability.

Key words: lignin; heterogeneous Fenton catalysts; degradation; Rhodamine B

收稿日期: 2016-03-12

作者简介: 王犇(1970—),男,副教授.

文章编号: 1672-6987(2017)04-0012-07; DOI: 10.16351/j.1672-6987.2017.04.002

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