Two Novel Polyoxometalate-Encapsulated Metal–Organic Nanotube Frameworks as Stable and Highly Efficient Electrocatalysts for Hydrogen Evolution Reaction

• Published in: ACS applied materials & interfaces Vol. 10; no. 37; pp. 31498 - 31504
• Main Authors: Zhang, Li, Li, Shaobin, Gómez-García, Carlos J, Ma, Huiyuan, Zhang, Chunjing, Pang, Haijun, Li, Bonan
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 19-09-2018
• Subjects: metal−organic nanotube frameworks; high catalytic activity; crystalline materials; high stability; HER electrocatalyst; polyoxometalate
• ISSN: 1944-8244; 1944-8252
• DOI: 10.1021/acsami.8b10447

Two novel polyoxometalate (POM)-encapsulated metal–organic nanotube (MONT) framework crystalline materials with unprecedented copper-mixed ligands, HUST-200 and HUST-201, have been successfully synthesized by an effective synthesis strategy. The encapsulation not only provides a shield to increase the chemical stability, but also does not affect its catalytic activity, and, therefore, the crystalline materials are very active for HER (H+ can diffuse easily through the pores of the MONTs). Remarkably, HUST-200 displays a low overpotential of 131 mV (catalytic current density is equal to 10 mA·cm–2). This work thus offers a new way for devising HER electrocatalysts with low cost using POM-encapsulated MONT frameworks.