Hydrogen Bridge-Mediated Efficient Electrooxidation of 5-Hydroxymethylfurfural on Ni(OH)─PO /Ni(PO) Heterojunctions.

Accelerating proton deintercalation and transfer on the catalyst surface is crucial for the electrochemical oxidation of 5-hydroxymethylfurfural (HMF) into the high-value 2,5-furanodicarboxylic acid (FDCA). Herein, we have constructed a Ni(OH)─PO /Ni(PO) heterojunction catalyst that demonstrates exceptional selectivity (97.16%), yield (94.

Homologation of Alkenes Using Acetylene as a C Feedstock.

The preparation of diverse homologs from lead compounds has been a common and important practice in medicinal, mechano, polymeric, and many other branches of chemistry. The homologation of alkenes, though important, remains challenging due to the difficulty of (CH) insertion into the main carbon chain of alkenes compared to chains containing other polar functional groups. Here, we report the homologation of both terminal and internal alkenes by using acetylene as a cheap and abundant C feedstock.

Ligand-Hybridization Activates Lattice-Hydroxyl-Groups of NiCo(OH) Nanowires for Efficient Electrosynthesis.

Electrochemical dehydrogenation of hydroxides plays a crucial role in the formation of high-valence metal active sites toward 5-hydroxymethylfurfural oxidation reaction (HMFOR) to produce the value-added chemical of 2,5-furandicarboxylic (FDCA). Herein, we construct benzoic acid ligand-hybridized NiCo(OH) nanowires (BZ-NiCo(OH)) with ample electron-deficient Ni/Co sites for HMFOR. The robust electron-withdrawing capability of benzoic acid ligands in BZ-NiCo(OH) speeds up the electrochemical activation and dehydrogenation of lattice-hydroxyl-groups (M-O-H⇌M-O), boosting the formation of abundant electron-deficient and high-valence Ni/Co sites.

Cross-linked α-Ni(OH) nanosheets with a Ni-rich structure for accelerating electrochemical oxidation of 5-hydroxymethylfurfural.

Electrochemical oxidation of biomass-based 5-hydroxymethylfurfural (HMF) is an effective approach for achieving the high-value products of 2,5-furandicarboxylic acid (FDCA). However, the restricted formation of high-valence metal active species for electrocatalysts results in a sluggish kinetic process of HMF oxidation reaction (HMFOR). Herein, we fabricated the Ni-rich cross-linked α-Ni(OH) nanosheets for accelerating the HMFOR through an anion-mediated strategy.