Bio:Huan Pang received his PhD degree from Nanjing University in 2011. He is now a distinguished professor at Yangzhou University and a Young Changjiang Scholar of the Ministry of Education in China. He is a senior member of the Chinese Chemical Society. He is the managing editor of EnergyChem, the editorial board member of National Science Review, FlatChem and Rare Metals, and the youth editorial board member of Nano Research, Nano Research Energy, eScience among other distinguished academic journals. He was recognized as a highly cited researcher in Cross-Field by Clarivate Analytics in 2020, 2021 and 2022. He has won “Best Editor Award 2021” for his professional excellence and outstanding contribution to Nano Research. His research area mainly focuses on metal-organic frameworks (MOFs) related materials.
Prof. John Zhou, University of Technology Sydney, Australia
Bio: Prof Zhou is an environmental chemist and engineer. With a PhD in environmental technology at the University of Manchester, UK, he has extensive research experience in a range of projects on water pollution and control using advanced oxidation and treatment technology. He is an expert evaluator for funding bodies including the EU Horizon, UK (EPSRC, NERC, Defra, Royal Society), Luxembourg (National Research Fund), USA (NSF, Sea Grant Committee, US-Israel Binational Agricultural Research and Development Fund), China (NNSFC, 973 High-Tech Programme, 1000 Plan), Italy (Fondazione Cariplo), Romania (National Council for Development and Innovation), Hong Kong Innovation etc. He has published approximately 330 SCI papers with a citation of 21000, and an h-index of 82. He is a World’s Top 2% Scientist (2019, 2020, 2021, 2022, 2023), ranked by Stanford University; Mendeley Top 100,000 Cited Researcher in the World (2020); Highly Cited Researcher 2021 Cross-Field; Highly Cited Researcher 2022 Environment and Ecology; and Highly Cited Researcher 2023 Cross-Field.
Title: Novel nanocomposites for photocatalytic degradation of perfluorooctanoic acid in water and wastewater
Abstract: Among different pollutants, perfluorooctanoic acid (PFOA) is one of the most persistent in global environment. A novel nanocomposite composed of ZnO nanoparticles and citric acid-modified g-C3N4 was synthesized by ball milling process which demonstrated effective photocatalytic decomposition of PFOA. The synthesized nanocomposite was more efficient than pure ball-milled ZnO nanoparticles under visible light irradiation. The optimal hybrid photocatalyst, containing 95 wt% of ZnO nanoparticles and 5 wt% of citric acid-modified g-C3N4, demonstrated significantly better photodegradation performance than pure ZnO nanoparticles under UV irradiation, with the apparent rate constants of 0.468 h-1 and 0.097 h-1, respectively. The addition of peroxymonosulfate (0.53 g L-1) significantly increased PFOA photodegradation, clarifying the crucial effect of sulfate radicals on PFOA decomposition. In addition to sulfate radicals, photogenerated holes and superoxide radicals were the main active species responsible for PFOA photodegradation. In addition, citric acid-modified g-C3N4 alone was not effective for PFOA decomposition under visible light irradiation (even with the addition of peroxymonosulfate). The findings suggest the formation of a heterostructure in the nanocomposites, responsible for their improved photocatalytic efficiency than pure ball-milled ZnO nanoparticles.
Prof. Cheng Yan, Queensland University of Technology, Australia
Bio: Prof Zhou is an environmental chemist and engineer. Cheng Yan received his Ph.D. from the University of Sydney，Australia in 1998. He is a professor at the School of Mechanical, Medical, and Process Engineering, Queensland University of Technology, Australia. His main research interest is nanocomposites, energy storage materials and mechanical characterization and numerical simulation of the structure-property relation in materials. He has received many competitive fellowships and awards from Australia Research Council (ARC), the University of Sydney, Queensland University of Technology and Queensland State government. He is editor or editorial member for 6 international journals and has published over 350 refereed journal papers and supervised to completion about 50 higher degree students.
Title: Investigation of material failure and degradation mechanisms in rechargeable batteries
Abstract: Current lithium-ion (Li-ion) batteries do not satisfy the increasing demands of portable electronic devices and electric vehicles, due to low energy densities, safety issues and high cost. High-capacity electrode materials are needed, and researchers have made significant progress over recent years. However, integrating these materials into practical cells has lagged due to several technical challenges. For example, volume expansion of active particles and mechanical stresses generated during cycling may cause cracking and interfacial debonding. Up to now, a fundamental understanding of material failure during electrochemical cycling is still lacking. In this presentation, we like to report our recent work on investigation of material failure and degradation in a range of rechargeable batteries via material characterization, mechanical testing, and atomistic modeling. Firstly, we discuss the evolution of microstructure, phase composition, particle size and mechanical stress in Si anode in Li-ion batteries during charging/discharging cycling and relevant strategies to overcome cracking and pulverization of Si particles. Then, the application of 2D materials in different rechargeable batteries will be briefly introduced.