title: Simultaneous H2 Generation and Biomass Upgrading in Water by an Efficient Noble-Metal-Free Bifunctional Electrocatalyst.
abstract: As an environmentally friendly approach to generate H2 , electrocatalytic water splitting has attracted worldwide interest. However, its broad employment has been inhibited by costly catalysts and low energy conversion efficiency, mainly due to the sluggish anodic half reaction, the O2 evolution reaction (OER), whose product O2 is not of significant value. Herein, we report an efficient strategy to replace OER with a thermodynamically more favorable reaction, the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), catalyzed by 3D Ni2 P nanoparticle arrays on nickel foam (Ni2 P NPA/NF). HMF is one of the primary dehydration intermediates of raw biomass and FDCA is of many industrial applications. As a bifunctional electrocatalyst, Ni2 P NPA/NF is not only active for HMF oxidation but also competent for H2 evolution. In fact, a two-electrode electrolyzer employing Ni2 P NPA/NF for simultaneous H2 and FDCA production required a voltage at least 200 mV smaller compared with pure water splitting to achieve the same current density, as well as exhibiting robust stability and nearly unity Faradaic efficiencies.
authors.affiliation: Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT, 84322, USA.
authors.forename: Bo
authors.initials: B
authors.lastname: You
authors.affiliation: Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT, 84322, USA.
authors.forename: Nan
authors.initials: N
authors.lastname: Jiang
authors.affiliation: Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT, 84322, USA.
authors.forename: Xuan
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hill, Logan, UT, 84322, USA. yujie.sun@usu.edu.
authors.forename: Yujie
authors.identifier: 0000-0002-4122-6255
authors.initials: Y
authors.lastname: Sun
keywords: H2 production; biomass upgrading; electrocatalysis; nickel phosphide