Title

Synthesis of cobalt (II) phthalocyanine complex with axial isonicotinic acid ligand: Molecular engineering of a photocatalyst for the degradation of benzene as a representative volatile organic compound

Date of Publication

2014

Document Type

Master's Thesis

Degree Name

Master of Science in Chemistry

College

College of Science

Department/Unit

Chemistry

Thesis Adviser

Derrick Ethelbert Yu

Defense Panel Chair

Janairo C. Gerardo

Defense Panel Member

Michael Angelo S. Promentilla
Nancy Lazaro-Llanos

Abstract/Summary

Axial modification for cobalt (II) phthalocyanine (CoPc) was done to enhance the catalytic activity of TiO2 by photodegrading benzene using indoor fluorescent lighting. The isonicotinic acid (IsA) ligand attached to the axial position of CoPc produced covalent anchor to TiO2 basing from the nanostructures synthesized using horizontal vapour phase crystal growth technique. Electrospray ionization mass spectrometry, differential thermal analysis, and geometry optimization calculations proves the existence of IsA occupying two axial positions in CoPc. Photodegradation analysis showed improvement of CoPc(IsA)-TiO2 on degradation of benzene by increasing the rate constant, as compared to plain TiO2 and CoPc-TiO2. GC-MS analysis showed oxidation products of benzene adsorbed on TiO2 surface which are hydrocarbon clusters synthesized from series of free radical reactions. The study provides usage of axial modification for facile synthesis of sensitizers for TiO2 for use in photocatalytic degradation of indoor air pollutants, specifically volatile organic compounds.

Abstract Format

html

Language

English

Format

Electronic

Accession Number

CDTG005559

Shelf Location

Archives, The Learning Commons, 12F Henry Sy Sr. Hall

Physical Description

leaves ; 4 3/4 in.

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