NU 2018-210 INVENTORS
SHORT DESCRIPTION This invention presents functionalized substrates featuring transition metal dichalcogenide (TMD) heterostructures, designed to enhance electrocatalytic systems for applications such as hydrogen production. BACKGROUND Transition metal dichalcogenides (TMDs), particularly molybdenum disulfide (MoS2), are pivotal in next-generation electronics due to their unique properties. Despite their potential, traditional production methods like mechanical exfoliation and chemical vapor deposition (CVD) face challenges in yield and precision. Moreover, while MoS2 is a promising non-precious material for hydrogen evolution reactions (HER), its bulk form lacks natural activity and conductivity, necessitating structural modifications that can compromise stability. ABSTRACT This invention introduces a novel method for synthesizing and engineering two-dimensional TMD materials, such as MoS2, with precise control over their structure and properties. By using gold nanoparticles as seeds during chemical vapor deposition (CVD), researchers can create unique core-shell structures with MoS2 shells and wing-like extensions. These "wings" provide abundant edge sites, improving performance in applications like hydrogen evolution reactions (HER) and electronic devices. The method enables scalable, customizable growth of TMD materials with enhanced catalytic activity, electrical conductivity, and structural stability, paving the way for advanced energy and electronic technologies. APPLICATIONS
ADVANTAGES
PUBLICATIONS Xinqi Chen, Vinayak P. Dravid, et al., "Site-Specific Positioning and Patterning of MoS2 Monolayers: The Role of Au Seeding" ACS Nano, Vol 12, Issue 9, August 20, 2018. IP STATUS Issued US Patent No. 11,214,878