|Table of Contents|

Preparation and Research on Catalytic Properties ofPolystyrene/Nano Zero-valent Iron Composites(PDF)

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

Issue:
2020年03期
Page:
54-62
Research Field:
·化学·
Publishing date:

Info

Title:
Preparation and Research on Catalytic Properties ofPolystyrene/Nano Zero-valent Iron Composites
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)
Keywords:
polystyrene beads; nanoscale zero-valent iron; catalytic degradation; phenolic compounds
PACS:
O643/X703
DOI:
10.3969/j.issn.1001-4616.2020.03.010
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.

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Last Update: 2020-09-15