Photocatalytic Degradation of p-Cresol by Zinc Oxide under UV Irradiation

被引：86

作者：

Abdollahi, Yadollah ^{[1
]}

Abdullah, Abdul Halim ^{[1
,2
]}

Zainal, Zulkarnain ^{[1
,2
]}

Yusof, Nor Azah ^{[2
]}

机构：

[1] Univ Putra Malaysia, Inst Adv Technol, Adv Mat & Nanotechnol Lab, Serdang 43400, Selangor De, Malaysia

[2] Univ Putra Malaysia, Dept Chem, Fac Sci, Upm Serdang 43400, Selangor, Malaysia

来源：

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES | 2012年 / 13卷 / 01期

关键词：

photocatalytic degradation; p-cresol; mineralization; ZnO; UV; AQUEOUS-SOLUTION; HETEROGENEOUS PHOTOCATALYSIS; OXIDATION PROCESS; TIO2; SUSPENSIONS; ZNO SUSPENSIONS; METHYLENE-BLUE; META-CRESOL; AZO-DYE; WATER; PHOTODEGRADATION;

D O I：

10.3390/ijms13010302

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Photocatalytic degradation of p-cresol was carried out using ZnO under UV irradiation. The amount of photocatalyst, concentration of p-cresol and pH were studied as variables. The residual concentration and mineralization of p-cresol was monitored using a UV-visible spectrophotometer and total organic carbon (TOC) analyzer, respectively. The intermediates were detected by ultra high pressure liquid chromatography (UPLC). The highest photodegradation of p-cresol was observed at 2.5 g/L of ZnO and 100 ppm of p-cresol. P-cresol photocatalytic degradation was favorable in the pH range of 6-9. The detected intermediates were 4-hydroxy-benzaldehyde and 4-methyl-1,2-benzodiol. TOC studies show that 93% of total organic carbon was removed from solution during irradiation time. Reusability shows no significant reduction in photocatalytic performance in photodegrading p-cresol.

引用

页码：302 / 315

页数：14

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