Photocatalysis of formaldehyde in the aqueous phase over ZnO/diatomite nanocomposite

被引：13

作者：

Darvishi Cheshmeh Soltani, Reza ^{[1
]}

Khataee, Alireza ^{[2
]}

Mashayekhi, Masumeh ^{[1
]}

Safari, Mandi ^{[3
]}

机构：

[1] Arak Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Arak, Iran

[2] Univ Tabriz, Dept Appl Chem, Res Lab Adv Water & Wastewater Treatment Proc, Fac Chem, Tabriz, Iran

[3] Kurdistan Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Sanandaj, Iran

来源：

TURKISH JOURNAL OF CHEMISTRY | 2016年 / 40卷 / 03期

关键词：

Formaldehyde; immobilization; nanocatalyst; photocatalysis; ZnO nanostructures; IMMOBILIZED TIO2 NANOPARTICLES; DOPED ZNO NANOPARTICLES; SONOCHEMICAL SYNTHESIS; GASEOUS FORMALDEHYDE; MODIFIED DIATOMITE; TEXTILE DYE; WASTE-WATER; DEGRADATION; ADSORPTION; REMOVAL;

D O I：

10.3906/kim-1507-54

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In the present study, ZnO nanostructures were synthesized and immobilized on the surface of diatomite via a simple sonochemical method for the photocatalytic degradation of formaldehyde in the aqueous phase. The characterization of as-prepared ZnO/diatomite nanocomposite was carried out by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR). The photocatalysis of formaldehyde was favored at neutral pH. At a ZnO to diatomite ratio of 0.3, increasing the photocatalyst dosage from 0.2 to 1.5 g/L resulted in increasing the photocatalytic removal of formaldehyde from 37.51% to 88.05%. At a formaldehyde concentration of 100 mg/L, the complete removal of formaldehyde was attained within the reaction time of 50 min. A mineralization efficiency of 53% was achieved, thereby confirming a suitable mineralization of formaldehyde within the short reaction time of 60 min.

引用

页码：402 / 411

页数：10

共 45 条

[1] Alumina nanoparticles grafted with functional groups as a new adsorbent in efficient removal of formaldehyde from water samples [J].