Preparation of Activated Carbon/TiO2 Nanohybrids for Photodegradation of Reactive Red-35 Dye Using Sunlight

被引：53

作者：

Mondol, Bappy ^{[1
]}

Sarker, Anupam ^{[1
]}

Shareque, A. M. ^{[1
]}

Dey, Shaikat Chandra ^{[1
]}

Islam, Mohammad Tariqul ^{[2
]}

Das, Ajoy Kumar ^{[1
]}

Shamsuddin, Sayed Md. ^{[1
]}

Molla, Md. Ashraful Islam ^{[1
]}

Sarker, Mithun ^{[1
]}

机构：

[1] Univ Dhaka, Fac Engn & Technol, Dept Appl Chem & Chem Engn, Dhaka 1000, Bangladesh

[2] Amer Int Univ Bangladesh, Dept Chem, Dhaka 1229, Bangladesh

来源：

PHOTOCHEM | 2021年 / 1卷 / 01期

关键词：

TiO2; activated carbon; nanohybrid; photodegradation; azo dyes; sunlight; PHOTOCATALYTIC ACTIVITY; DEGRADATION; WATER; TIO2; REMOVAL; ADSORPTION; POLLUTANTS; ZNO;

D O I：

10.3390/photochem1010006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Activated carbon/titanium dioxide (AC/TiO2) nanohybrids were synthesized by a hydrothermal technique using various weight percent of commercial AC and were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR) and thermogravimetric analysis (TGA). The synthesized nanohybrids were applied to photodegradation of Reactive Red-35 (RR-35) dye in aqueous solution using sunlight. Due to the synergistic effect of adsorption and photodegradation activity, AC/TiO2 nanohybrids were more efficient in treating the aqueous dye solution than that of AC and TiO2. The maximum (95%) RR-35 dye removal from the water was obtained with 20 wt% AC/TiO2 within 30 min at natural pH of 5.6. The possible photodegradation mechanism of RR-35 dye with AC/TiO2 was discussed from the scavenger test. Moreover, AC/TiO2 was found to be suitable for long-term repeated applications through recyclability experiments. Therefore, AC/TiO2 nanohybrid is a promising photocatalyst for treating azo dyes especially RR-35 from water.

引用

页码：54 / 66

页数：13

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