SUNLIGHT DRIVEN PHOTOCATALYTIC DEGRADATION OF 2-CHLOROPHENOL BY POLYPYRROLE/GRAPHENE OXIDE COMPOSITES

Q3 Multidisciplinary Malaysian journal of science Pub Date : 2021-02-28 DOI:10.22452/MJS.VOL40NO1.6

S. Baharin, Kavirajaa Pandian Sambasevam, Nur Farahin Suhaimi, A. Rahat, S. Rahman, Shafira Nadira Musiran

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引用次数: 4

Abstract

Polypyrrole/graphene oxide (PPy/GO) was synthesized and evaluated as an effective photocatalyst to degrade 2-chlorophenol from aqueous solution under solar light irradiation. The PPy/GO composite was synthesized by the incorporation of PPy with the GO using Hummer’s method(s). Three different compositions of PPy/GO composites were prepared with the varying ratio of PPy and GO (1:1, 1:4, 9:1). Physicochemical properties of pristine PPy, GO and as synthesized PPy/GO composites were characterized using FTIR, UV-Vis, XRD, and SEM with EDX. The characterizations results revealed that PPy was successfully integrated with the GO in the PPy/GO composites. The photodegradation of 10 ppm of 2-chlorophenol has been observed under sunlight for 3 hours with the exposure contact time of 180 minutes before being tested with UV-Vis in order to obtain the percentage of degradation in the sunlight. The degradation study exhibited that PPy/GO composite with the ratio of 1:1 exhibited the highest percentage of degradation of ~ 71.08 and 68.96 % at the time of 180 minutes and 3 hours respectively.

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聚吡咯/氧化石墨烯复合材料光催化降解2-氯苯酚的研究

合成了聚吡咯/氧化石墨烯（PPy/GO），并评价其作为一种在太阳光照射下降解水溶液中2-氯酚的有效光催化剂。采用Hummer方法将PPy与GO结合，合成了PPy/GO复合材料。通过改变PPy和GO的比例（1:1、1:4、9:1），制备了三种不同组成的PPy/GO复合材料。利用FTIR、UV-Vis、XRD和EDX扫描电镜对原始PPy、GO和合成的PPy/GO复合材料的理化性能进行了表征。表征结果表明，在PPy/GO复合材料中，PPy和GO成功地结合在一起。在用UV-Vis测试之前，已经在阳光下观察到10ppm 2-氯酚的光降解3小时，暴露接触时间为180分钟，以获得在阳光下的降解百分比。降解研究表明，比例为1:1的PPy/GO复合材料在180分钟和3小时时分别表现出最高的降解率约71.08和68.96%。

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