基于油菜花粉模板制备Fe基复合材料及其催化特性

doi:10.11896/cldb.22040339

材料导报

2023, Vol. 37

Issue (21): 22040339-6 https://doi.org/10.11896/cldb.22040339

无机非金属及其复合材料

基于油菜花粉模板制备Fe基复合材料及其催化特性

程爱华^*, 谢倩祎

西安科技大学地质与环境学院,西安 710054

Preparation of Fe-based Composites Based on Rape Pollen Template and Their Catalytic Properties

CHENG Aihua^*, XIE Qianyi

College of geology and environment, Xi'an University of Science and Technology, Xi'an 710054, China

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摘要以油菜花粉为生物模板,采用共沉淀-焙烧法制备了Fe基复合材料活化过硫酸盐降解苯酚。采用X射线衍射(XRD)、扫描电子显微镜 (SEM)和比表面积分析仪(BET)对Fe基复合材料进行表征分析。以苯酚为目标污染物,考察了催化剂投加量、过硫酸盐投加量、初始pH和苯酚浓度对苯酚降解效果的影响。结果表明,Fe基复合材料活化过硫酸盐降解苯酚性能优良。在最佳反应条件(25 ℃,苯酚初始浓度为200 mg/L,催化剂投加量为3 g/L,过硫酸盐投加量为8.4 mmol/L)下,反应60 min苯酚的降解率可达91%。Fe基复合材料可通过磁性分离,易于回收,在较宽pH范围内均可活化过硫酸盐降解苯酚,重复使用三次后,苯酚的降解率仍可达81%,稳定性良好。Fe基复合材料通过Fe²⁺及花粉模板残留的C及其官能团共同活化过硫酸盐产生SO₄·^-和 HO·降解苯酚。

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关键词: 油菜花粉 Fe基复合材料过硫酸盐活化苯酚

Abstract: Using rape pollen as a biological template, Fe-based composites were prepared by coprecipitation-calcination method for phenol degradation by activated persulfate. The Fe-based composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and specific surface area analyzer(BET). Phenol as the target pollutant, the effects of catalyst dosage, persulfate dosage, initial pH and phenol concentration on the degradation of phenol were investigated. The results show that the Fe-based composites have excellent performance in the degradation of phenol by activating persulfate. Under the optimal reaction conditions (25 ℃, the initial concentration of phenol was 200 mg/L, the dosage of catalyst was 3 g/L, and the dosage of persulfate was 8.4 mmol/L), the degradation rate of phenol after the reaction for 60 min could be obtained up to 91%. The Fe-based composite material can be separated by magnetic separation and easy to recover. It can activate persulfate to degrade phenol in a wide pH range. After repeated use for 3 times, the degradation rate of phenol can still reach 81%, indicating that the Fe-based composite material is stable. Phenol is degraded through the Fe-based composites activated persulfate to produce SO₄·^- and HO· by Fe²⁺and the residual C and its functional groups in the pollen template activated persulfate.

Key words: rape pollen Fe-based composites persulfate activation phenol

出版日期: 2023-11-10 发布日期: 2023-11-10

ZTFLH:	TB332
	X703.1

基金资助: 国家自然科学基金青年项目(51808442)

通讯作者: ^*程爱华,1998年毕业于兰州铁道学院(现兰州交通大学),获得环境工程学士学位。2001年毕业于兰州铁道学院(现兰州交通大学),获得环境工程硕士学位。2007年毕业于西安建筑科技大学,获得环境工程博士学位。西安科技大学教师,副教授,硕士研究生导师。主要从事水处理技术和环境功能材料的教学与科研工作。发表论文 60 余篇,获得国家授权发明专利 7项。cah_cheng@126.com

引用本文:

程爱华, 谢倩祎. 基于油菜花粉模板制备Fe基复合材料及其催化特性[J]. 材料导报, 2023, 37(21): 22040339-6.
CHENG Aihua, XIE Qianyi. Preparation of Fe-based Composites Based on Rape Pollen Template and Their Catalytic Properties. Materials Reports, 2023, 37(21): 22040339-6.

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http://www.mater-rep.com/CN/10.11896/cldb.22040339 或 http://www.mater-rep.com/CN/Y2023/V37/I21/22040339

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