Catalytic efficiency of ZIF-67 MXene and PMS in organic pollutant degradation

• Main Author: Eng, Bo Xuan
• Other Authors: Darren Sun Delai
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2023
• Subjects: Engineering::Civil engineering
• Online Access: https://hdl.handle.net/10356/172704
• Institution: Nanyang Technological University

Water contamination by organic pollutants, including Bisphenol A (BPA) and Acid Orange 7 (AO7), poses a significant threat to the environment and human health. These pollutants can have adverse effects on human health and aquatic ecosystems, therefore implementing effective water treatment measures like using Zeolitic Imidazolate Framework 67 (ZIF-67) MXene catalyst for peroxymonsulfate (PMS) activation is essential to mitigate these risks. ZIF-67 MXene catalyst was fabricated and investigated in this study. The fabrication method involves doping ZIF-67 onto MXene. MXene and ZIF-67 are both known for their high surface area and adsorption capabilities. Furthermore, cobalt ions in ZIF-67 serves an important role in PMS activation. Therefore, doping MXene with materials like ZIF-67 further improves its properties for treating organic pollutants in water. The characterization of the ZIF-67 MXene catalyst has revealed the insertion of small ZIF-67 crystals into the layered structure of MXene, resulting in exceptional adsorption capacity and increased surface area. The study demonstrates that the ZIF-67 MXene, in conjunction with the PMS activation catalytic system, can rapidly degrade 93% of AO7 in just 4 minutes and over 96% of BPA within a 10-minute timeframe. Overall, this study has shown that ZIF-67 MXene proves to be a highly effective catalyst for activating PMS and degrading organic water pollutants. Its efficiency and recovery capabilities make it a promising solution for water treatment applications.