▎ 摘　　要

NOVELTY - Preparation of biomass base nitrogen-doped graphene/carbon fiber electric catalyst comprises uniformly mixing biomass, graphite phase carbon nitride precursor and graphite phase carbon nitride at mass ratio of 1:0-20:0-20 through ball milling, carrying out pyrolysis under inert atmosphere protection, and cooling to room temperature. USE - Method for preparing biomass base nitrogen-doped graphene/carbon fiber electric catalyst (claimed) used for electro-catalytic reduction of oxygen, photocatalysis hydrogen production, photocatalytic degradation, catalyst support, and wastewater treatment. ADVANTAGE - The catalyst has more active sites, and stronger electrical conductivity. The method does not need pretreatment process, avoids chemical reactions and complex synthetic processes, realizes short production phase, and realizes expanded production.