Synthesis, Characterization and Application of Polyaniline/Tin Oxide/Single-Wall Carbon Nanotube (PAni/SnO2/SWNT) in Photodegradation of Organic Dye

Song, Hoe Theng (2019) Synthesis, Characterization and Application of Polyaniline/Tin Oxide/Single-Wall Carbon Nanotube (PAni/SnO2/SWNT) in Photodegradation of Organic Dye. Final Year Project (Bachelor), Tunku Abdul Rahman University College.

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Abstract

Rapid development of textile, electrical and electronic industries created huge amount of organic dye that caused serious environment issues. In the study, photodegradation of PAni/HA/SnO2/SWNT in RB5 organic dyes was firstly reported here in order to solve the environment problem. PAni/HA, PAni/HA/SnO2, PAni/HA/SWNT and PAni/HA/SnO2/SWNT with different amount of SWNT (0.1f, 0.2g and 0.3g) were synthesized through templete free method in 0℃. Ultraviolet-visible (UV-Vis), Fourier Transform Infrared (FTIR) and X-ray Powder Diffraction (XRD) spectra confirmed the chemical structure of the resulted PAni. Scanning Electron Microscope (SEM) was used to determine the formation of nanotube and nanorod. Conductivity meter was used to measure the electrical conductivity for the PAni composites. Band gap and photoluminescence (PL) analyses were used to determine the mechanism between PAni composite and RB5 during photodegradation process. PAni/HA/SnO2/SWNT 0.1g shown the highest electrical conductivity of 1.68 S cm-1 compared to other PAni composite. The addition of SWNT increased the conductivity of the PAni composite. Among all PAni, PAni/HA/SnO2/SWNT 0.3g possed the highest photodegradation efficiency of 15.73% because PAni and SWNT in PAni/HA/SnO2/SWNT 0.3g but also the capability to absorb visible light. Besides, SWNT significantly decrease the recombination of e-h+ in the system but also provided large surface area active site for RB5 adsorption. Band gap analysis significantly proved that the PAni/HA/SnO2/SWNT 0.3g can absorb visible light as well as PL analysis significantly confirmed that the PAni/HA/SnO2/SWNT 0.3g possesses lower recombination rate for e-h+.