merged

Synthesis and Characterization of Zinc Aluminium Layered Double
Hydroxide as Potential Adsorbent for Phenol Red Dye
Nor Hanani Binti Ab. Halim
Supervisor: Dr. Mazidah Binti Mamat
Bachelor of Science (Chemical Sciences)
School Of Fundamental Science
Layered double hydroxide (LDH) is an anionic clay that is widely used as an adsorbent
to remove pollutants in water body-system. This study describes the procedure for the
removal of phenol red (PR) dye from wastewater by using zinc/ aluminium LDH (Zn-
Al LDH). Zn(NO3)2.6H2O and Al(NO3)3.9H2O mixture with ratio of 3:1 was used to
synthesize Zn-Al LDH via co-precipitation method. During the synthesis, the pH of the
solution was raised until 7 and kept constant. The synthesized Zn-Al LDH has been
characterized by using five different techniques which are X-ray Diffraction, Fourier
Transform Infrared Spectroscopy, Thermogravimetric Analysis, Scanning Electron
Microscopy, and CHNS analysis. The adsorption study was conducted by using
different masses of Zn-Al LDH which were put in contact with 25 ml of 30 ppm PR
dye. The removal percentage of PR dye as found to increase as the mass of Zn-Al LDH
increases.
429 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018