Invited Speakers
EXPERTS
Longcheng Zhang
Sichuan University, China
Biography: Dr. Longcheng Zhang is an Associate Research Fellow at Sichuan University. His research focuses on electrochemical energy and chemical engineering for green hydrogen, green ammonia, and low-carbon chemical production. He has published over 18 papers as first or corresponding author in journals including Nature Communications, Energy & Environmental Science, and Angewandte Chemie International Edition, with more than 9,200 citations and an h-index of 59. He has been listed among the World’s Top 2% Scientists since 2024. He has led projects funded by the Young Scientists Fund of the National Natural Science Foundation of China, the Natural Science Foundation of Sichuan Province, and serves on the Young Editorial Boards of Nano Research Energy, Nano-Micro Letters, and Advanced Powder Materials, as well as a reviewer for leading journals including Nature Communications, Materials Today, ACS Catalysis, and Advanced Functional Materials.
Speech title "Interfacial Hydrogenation Regulation for Ammonia Electrosynthesis"
Abstract-Electrocatalytic
nitrate reduction offers a sustainable route for treating
nitrate-containing wastewater using renewable electricity,
but selective nitrate-to-ammonia conversion remains limited
by sluggish hydrogenation of nitrogen-containing
intermediates and competing hydrogen evolution. Here, we
regulate interfacial hydrogenation by anchoring
para-substituted aryl sulfur ligands on silver nanocubes.
Among the investigated modifiers, 4-(methylthio)benzaldehyde
(MTBA) optimally tunes the Ag interface, increasing the
ammonia Faradaic efficiency from 50.8% to 98.9% and
delivering an ammonia yield rate of 14,366.1 μg h−1
cmgeo−2 at −0.63 V versus the
reversible hydrogen electrode under wastewater-relevant
nitrate conditions. In situ electrochemical characterization
and theoretical
simulations show that MTBA promotes interfacial water
activation, generates proximal active hydrogen species, and
accelerates *HNO hydrogenation, thereby steering nitrate
reduction toward ammonia with near-unity selectivity. The
enhanced performance is further demonstrated in a membrane
electrode assembly electrolyzer, highlighting molecular
interface regulation as an effective strategy for selective
nitrate-to-ammonia electrosynthesis.
Coming soon for more speakers......