[1]陈嘉豪,王旭增,吴 伟,等.聚苯乙烯纳米零价铁复合材料的制备及催化性能研究[J].南京师范大学学报(自然科学版),2020,43(03):54-62.[doi:10.3969/j.issn.1001-4616.2020.03.010]
　Chen Jiahao,Wang Xuzeng,Wu Wei,et al.Preparation and Research on Catalytic Properties ofPolystyrene/Nano Zero-valent Iron Composites[J].Journal of Nanjing Normal University(Natural Science Edition),2020,43(03):54-62.[doi:10.3969/j.issn.1001-4616.2020.03.010]
点击复制

聚苯乙烯纳米零价铁复合材料的制备及催化性能研究()
分享到：

《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第43卷
期数:
2020年03期
页码:
54-62
栏目:
·化学·
出版日期:
2020-09-30

文章信息/Info

Title:
Preparation and Research on Catalytic Properties ofPolystyrene/Nano Zero-valent Iron Composites
文章编号:
1001-4616(2020)03-0054-09
作者:
陈嘉豪1; 王旭增1; 吴 伟2; 杨维本1
(1.南京师范大学化学与材料科学学院,江苏省物质循环与污染控制重点实验室,江苏 南京 210023)(2.江苏环保产业技术研究院股份公司,江苏 南京 210036)
Author(s):
Chen Jiahao1; Wang Xuzeng1; Wu Wei2; Yang Weiben1
(1.Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control,School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Academy of Environmental Industry and Technology Corp.,Nanjing 210036,China)
关键词:
聚苯乙烯小球; 纳米零价铁; 催化降解; 酚类污染物
Keywords:
polystyrene beads; nanoscale zero-valent iron; catalytic degradation; phenolic compounds
分类号:
O643/X703
DOI:
10.3969/j.issn.1001-4616.2020.03.010
文献标志码:
A
摘要:
通过闪冻聚苯乙烯负载铁盐后还原的方法,制备了多孔聚苯乙烯(PS)负载纳米零价铁(nZVI)复合材料(nZVI/PS),利用X射线衍射(XRD)、扫描电镜(SEM)和氮气吸附解吸实验对样品进行表征; 通过构建nZVI/PS/H2O2非均相芬顿体系,考察了对苯酚、1-萘酚、4-硝基苯酚以及4-氯苯酚等酚类污染物的催化降解性能,探究了pH、催化剂用量、污染物浓度、H2O2对污染物脱除性能的影响. 实验结果表明,nZVI/PS的比表面积更大、反应活性位点丰富且分散均匀,pH适应范围广; 当pH=4,酚类化合物初始浓度为100 mg/L,H2O2用量2 mmol/L,投加量 0.5 g/L 时,酚类污染物降解效率在180 min内几乎可达到100%,降解过程符合伪一级反应动力学. 新型催化材料可重复使用.
Abstract:
Porous polystyrene-supported nanosized zero-valent iron(nZVI/PS)composite was developed by assembling nZVI to polystyrene beads. The nZVI/PS was characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),and N2 adsorption/desorption isothermal experiments. Phenol,1-naphthol,4-nitrophenol,and 4-chlorophenol were chosen as target pollutants. The catalytic performance of nZVI/PS was investigated on the basis of various parameters,including initial pH,H2O2 concentration,catalyst dosage,and initial concentration of phenolic pollutants. Combined with the physical-chemical characterization,nZVI/PS has a larger specific surface area,well-dispersed reactive sites and is highly efficient and stable in degradation process with wide working pH range. The results showed that it could effectively degrade phenolic compounds,with almost 100% removal efficiency within 180 min,under the reaction condition of pH 4.0,100 mg/L phenolic compound,2 mmol/L H2O2,and 0.5 g/L catalyst. The degradation process can sufficiently be described by a pseudo-first-order kinetic model. Furthermore,nZVI/PS exhibited a good stability and reusability.

参考文献/References:

[1] WANG Y X,SUN H Q,DUAN X G,et al. A new magnetic nano zero-valent iron encapsulated in carbon spheres for oxidative degradation of phenol[J]. Applied catalysis B:environmental,2015,172/173:73-81.
[2]XU S Q,ZHU H X,CAO W R,et al. Cu-Al2O3-g-C3N4 and Cu-Al2O3-C-dots with dual-reaction centres for simultaneous enhancement of Fenton-like catalytic activity and selective H2O2 conversion to hydroxyl radicals[J]. Applied catalysis B:environmental,2018,234:223-233.
[3]江勇,杨英,唐跃武,等. 壳聚糖包被纳米铁催化降解罗丹明B研究[J]. 水处理技术,2018,44(11):59-65.
[4]汪琼,张政,陈宗华,等. Bi2Ti2O7/TiO2异质结对盐酸四环素的光催化降解效果评价[J]. 南京师大学报(自然科学版),2017,40(2):155-160.
[5]BARNDK H,BLANCO L,HERMOSILLA D,et al. Heterogeneous photo-Fenton processes using zero valent iron microspheres for the treatment of wastewaters contaminated with 1,4-dioxane[J]. Chemical engineering journal,2016,284:112-121.
[6]周涛,陆晓华,李耀中. 4-CP在零价铁/H2O2体系中的降解研究[J]. 环境科学与技术,2009,32(7):60-63.
[7]LOFRANO G,CAROTENUTO M,LIBRALATO G,et al. Polymer functionalized nanocomposites for metals removal from water and wastewater:an overview[J]. Water research,2016,92:22-37.
[8]JIANG Z M,Lü L,ZHANG W M,et al. Nitrate reduction using nanosized zero-valent iron supported by polystyrene resins:role of surface functional groups[J]. Water research,2011,45:2191-2198.
[9]LIU H B,XU J L,LI Y J,et al. Aggregate nanostructures of organic molecular materials[J]. Accounts of chemical research,2010,43:1496-1508.
[10]JIANG Z Y,WANG L Z,LEI J Y,et al. Photo-Fenton degradation of phenol by CdS/rGO/Fe2+ at natural pH with in situ-generated H2O2[J]. Applied catalysis B:environmental,2019,241:367-374.
[11]付东东,张琼洁,范正权,等. 微米级聚苯乙烯对铜的吸附特性[J]. 中国环境科学,2019,39(11):4769-4775.
[12]张杰,杨忠林,黄鹤勇,等. 氧化石墨烯固定Ag3PO4光催化降解染料罗丹明的机理研究[J]. 南京师大学报(自然科学版),2018,41(3):65-69.
[13]TANG J T,WANG J L. Metal organic framework with coordinatively unsaturated sites as efficient Fenton-like catalyst for enhanced degradation of sulfamethazine[J]. Environment science and technology,2018,52:5367-5377.
[14]MA J Q,YANG Q F,WEN Y Z,et al. Fe-g-C3N4/graphitized mesoporous carbon composite as an effective Fenton-like catalyst in a wide pH range[J]. Applied catalysis B:environmental,2017,201:232-240.
[15]WANG J,LIU C,LI J S,et al. In-situ incorporation of iron-copper bimetallic particles in electrospun carbon nanofibers as an efficient Fenton catalyst[J]. Applied catalysis B:environmental,2017,207:316-325.
[16]李瑛,肖阳,李筱琴,等. 纳米零价铁及其双金属体系对菲的降解研究[J]. 环境科学学报,2015,35(2):499-507.
[17]SUN Y,YANG Z X,TIAN P F. Oxidative degradation of nitrobenzene by a Fenton-like reaction with Fe-Cu bimetallic catalysts[J]. Applied catalysis B:environmental,2019,244:1-10.
[18]LI X Q,XIAO B,WU M,et al. In-situ generation of multi-homogeneous/heterogeneous Fe-based Fenton catalysts toward rapid degradation of organic pollutants at near neutral pH[J]. Chemosphere,2020:245:125663.
[19]俞恬,张巍,贾楠,等. 负载纳米零价铁复合材料去除COCs的研究进展[J]. 环境科学与技术,2016,39(1):44-52.
[20]张剑桥,迟惠中,宋阳,等. Ce3+与Cu2+协同强化芬顿体系氧化苯酚的效能与机制研究[J]. 环境科学,2016,37(8):3067-3072.

备注/Memo

备注/Memo:
收稿日期:2020-03-01.
基金项目:国家自然科学基金项目(52070100).
通讯作者:杨维本,博士,教授,博士生导师,研究方向:高分子材料在水污染控制与资源化领域的应用. E-mail:yangwb007@njnu.edu.cn
更新日期/Last Update: 2020-09-15