Herein, we constructed one-dimensional hollow nanofiber catalyst composed of tightly-packed multiphase metal oxides of Mn2O3  and Cu1.4Mn1.6O4  by electrospinning and tailored thermal treatment procedure. The characterization results comprehensively confirmed the special morphology and composition of various comparative catalysts. This strategy endows the catalyst with the abundant interfacial manner of component Mn2O3  and Cu1.4Mn1.6O4  nanocrystal. Impressively, the tuning thermal treatment renders tailored Cu(I) sites and surface oxygen species of the catalyst thus affording optimized oxygen vacancy for reinforced oxygen adsorption, while the concomitant enhanced lattice oxygen activity in the constructed composite catalyst ensures the higher catalytic oxidation ability. More importantly, the regulated proportion of oxygen vacancy and lattice oxygen in the composite catalyst was obtained in the best catalyst, benefiting to accelerate the reaction cycle. Compared to other counterparts obtained by different temperatures, the CMO-500 sample exhibited superior selective aerobic 5-hydroxymethylfurfural (HMF) oxidation to 2, 5-furandicarboxylic acid (FDCA, 96% of yield) in alkali-bearing aqueous solution using O2  at 120 °C, which was resulted from the above-mentioned composition optimization and interfacial engineering reinforced surface oxygen consumption and regeneration cycle. The reaction mechanism was further proposed to uncover the lattice oxygen and oxygen vacancy participating HMF conversion process.

Enabling efficient aerobic 5-hydroxymethylfurfural oxidation to 2,5-furandicarboxylic Acid in water by interfacial engineering reinforced Cu-Mn oxides hollow nanofiber.

Although metal-carbon combination has been demonstrated promotive efficiency in advanced oxidation process(AOP), multidimensional coupling by exploiting metal-carbon interaction, dual-metal redox cycle, and photothermal synergetic catalysis remains rare in AOP. Here,...

Carbon framework encapsulated CoMn2O4 spinel derived from electrospun nanofiber coupling with photothermal approach reinforces PMS activation to eliminate 2,4-dichlorophenol

Enabling room-temperature reductive C−N coupling of Nitroarenes: Combining homogeneous with heterogeneous synergetic catalysis mediated by light

Rational construction of Ag@MIL-88B(V)-derived hierarchical porous Ag-V2O5 heterostructures with enhanced diffusion kinetics and cycling stability for aqueous zinc-ion batteries

Tetracycline hydrochloride (TC) is a typical refractory organic pollutant, and is frequently detected in different water environments, which will increase microbial drug resistance, destroy ecosystem and threaten human health. It...

Synergistic effect of PMS activation by LaCoO3/g-C3N4 for degradation of Tetracycline hydrochloride: performance, mechanism and phytotoxicity evaluation

Chengzhang Zhu

Papers

Tailored oxygen defect coupling composition engineering CoxMn2O4 spinel hollow nanofiber enables improved Bisphenol A catalytic degradation

Interfacial engineering coupling with tailored oxygen vacancies in Co2Mn2O4 spinel hollow nanofiber for catalytic phenol removal