RESEARCH

Our research focuses on developing high-performance nanofiber filters based on advanced nanomaterials for effective air purification. Moving beyond traditional filtration, we prioritize sustainability by utilizing eco-friendly nanofibers. By implementing precise surface modification techniques, we impart specialized functionalities—such as selective adsorption and degradation of hazardous pollutants. Our goal is to establish an innovative filtration platform that achieves both maximum filtration efficiency and minimal pressure drop, optimizing energy consumption and air quality simultaneously.

We investigate hydrovoltaic technology that harvests electrical energy from the natural evaporation of water. By optimizing the microporous structures and capillary action of nanofibers, we develop next-generation energy harvesting systems that continuously convert ambient thermal energy into electricity. Our research focuses on integrating high-charge-density nanomaterials and advanced surface functionalization to control ionic transport, aiming to achieve superior power density. This technology paves the way for self-powered sensors and sustainable, stand-alone power sources.

Our research group focuses on an integrated electrochemical system designed for practical CO2 mitigation and plastic waste recycling. While traditional methods often focus on merely capturing CO2, our approach utilizes renewable energy to directly convert CO2 into industrial feedstocks like formic acid, actively reducing atmospheric carbon levels. By engineering high-performance carbon electrodes derived from plastic waste, we enhance energy efficiency and reduce operational costs. This research provides a robust environmental engineering solution to achieve carbon-neutral or even carbon-negative goals.

Our laboratory has established a multi-dimensional air quality monitoring system using diverse mobile platforms, including backpacks, bicycles, drones, and aircraft. Beyond simple concentration mapping, we utilize our custom-engineered drone-based rotating cascade impactors to perform size-selective aerosol sampling at various altitudes. Collected single particles are analyzed at the molecular level using advanced techniques such as Surface-Enhanced Raman Spectroscopy (SERS). This allows us to characterize the chemical mixing states and vertical aging mechanisms of aerosols, providing critical insights into source apportionment and long-range transport pathways. Our integrated approach supports everything from micro-scale exposure assessments in urban areas to the development of regional atmospheric policies.

Our research focuses on the atomic-level design and synthesis of advanced functional materials, including Metal-Organic Frameworks (MOFs), metal nanoparticles, and porous nanostructures. By leveraging core expertise in defect engineering and atomic layer encapsulation, we aim to maximize active sites and enhance the stability of materials for diverse environmental and energy applications.