Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/166669
Title: Engineering atomic metal active sites on polymeric carbon nitride for photocatalytic antibiotics treatment
Authors: Loh, Hong Yi
Keywords: Engineering::Materials
Issue Date: 2023
Publisher: Nanyang Technological University
Source: Loh, H. Y. (2023). Engineering atomic metal active sites on polymeric carbon nitride for photocatalytic antibiotics treatment. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166669
Abstract: Antibiotic resistance remains as one of the biggest threats to global health, food security, and development today, hence the demand for a novel water treatment process. This project aims to improve antibiotics treatment process via heterogeneous photocatalysis method by doping Iron on the Polymeric Carbon Nitride (PCN) catalyst, as well as investigate its photocatalytic mechanism. Currently, Advanced Oxidation Processes (AOP) based photocatalytic degradation face multiple efficiency challenges such as high surface recombination rates of excitons, low light absorption and short lifetime of photogenerated electrons. Herein, iron doped PCN (Fe-PCN) is synthesized using a one-pot method and its photocatalytic performance is tested using tetracycline (TC) as the organic pollutant. Despite retaining the same nanostructure as the pristine PCN, it is revealed that Fe-PCN shows enhanced photodegradation with a more extensive removal of Tetracycline TC. A typical AOP reaction pathway includes generation of highly Reactive Oxygen Species (ROS) such as hydroxyl radicals (•OH) and superoxide anion (•O2-) to break down organic pollutants to non-toxic intermediates. Remarkably, Fe-PCN demonstrated no ROS production to achieve efficient TC decomposition. Thus, a possible reaction mechanism responsible for such a phenomenon was proposed.
URI: https://hdl.handle.net/10356/166669
Schools: School of Materials Science and Engineering 
Organisations: A*STAR, IMRE
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

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