• Nano-Enabled Water Technologies

Invited SpeakersProfile Details

Prof.  Xing Xie
Prof. Xing Xie Dr. Xing Xie is an assistant professor and the Carlton S. Wilder Junior Professor in the School of Civil and Environmental Engineering at Georgia Tech. His research interests are applications of environmental biotechnology and materials science at the nexus of water and energy.

Biography

Dr. Xing Xie is an assistant professor and the Carlton S. Wilder Junior Professor in the School of Civil and Environmental Engineering at Georgia Tech. Prior to joining GT, he was a post-doctoral scholar at Caltech. Dr. Xie received his B.S. (2006) and M.S. (2008) degrees in Environmental Science & Engineering from Tsinghua University. He received his Ph.D. degree (2014) in Civil & Environmental Engineering and his second M.S. degree (2012) in Materials Science & Engineering from Stanford University. His research interests are applications of environmental biotechnology and materials science at the nexus of water and energy. He has worked on many projects related to water treatment and reuse, microbial detection and quantification, energy and resource recovery, and energy storage. He has published over 40 peer-reviewed articles in leading journals, including PNAS, Energy & Environmental Science, and Nature Communications. His work has been cited over 4000 times with an H-index of 22.

All sessions by Prof. Xing Xie

  • Day 2Tuesday, January 29th
11:00 am

Electrode Development for Nano-Enabled Low-Voltage Electroporation Disinfection

Highly efficient, low-energy-consuming, reliable, and easily-applicable pathogen inactivation methods are in great demand for protecting human health from waterborne diseases, especially in regions suffering from energy shortages and infrastructure deficiencies. Nanowire-assisted low-voltage electroporation enables effective and energy-efficient pathogen inactivation. Nevertheless, the insufficient stability of the nanowires has become a major obstacle in practical applications: a state-of-the-art copper-oxide-nanowire-modified copper foam (CuONW-Cu) electrode can only sustain disinfection for about 10 minutes. We have tried two different strategies to improve the stability of the nanowires: 1) applying a protective polydopamine (PDA) coating and 2) converting CuONWs to Cu3PNWs. Applying either of these strategies has successfully increased the lifetime of the electrode to more than 10 hours while retaining the high microbial inactivation efficiency. In the meantime, the energy consumption of the electroporation disinfection process has been further reduced to 1.2 J per liter of water treated.

Auditorium between bldg. 4 & 5, level 0 11:00 - 11:30 Details