Scalable H₂O₂ Production via O₂ Reduction Using Immobilized Vanadyl Phthalocyanine.

ABSTRACT: The production of hydrogen peroxide (H₂O₂) via the two-electron oxygen reduction reaction (ORR) has emerged as a promising alternative to the conventional anthraquinone process. However, achieving selective H₂O₂ production at practically relevant current densities (i.e., ampere-level) remains challenging due to significant selectivity deterioration at high rates. In this study, we develop a composite catalyst by immobilizing vanadyl phthalocyanine (VOPc) on carbon nanotube (CNT) substrates and evaluate its performance under conditions relevant to practical ORR electrolysis. Encouragingly, the VOPc/CNT catalyst composite achieves a high ORR current density of up to 3.5 A cm^-2 with over 90% selectivity toward H₂O₂ i

SUBMITTER: Yang H 

PROVIDER: S-EPMC12322638 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature