Augmenting Intrinsic Fenton-Like Activities of MOF-Derived Catalysts via N-Molecule-Assisted Self-catalyzed Carbonization

Abstract

HIGHLIGHTS • Metal-organic-framework-derived carbon hybrids with elaborated nanostructures were prepared via N-molecule-assisted self-catalytic carbonization process. • The enriched Fe/Fe-N x /pyridinic-N active species, porous structures, and conductive carbon nanotubes can synergically augment the intrinsic catalytic activities. ABSTRACT To overcome the ever-growing organic pollutions in the water system, abundant efforts have been dedicated to fabricating efficient Fenton-like carbon catalysts. However, the rational design of carbon catalysts with high intrinsic activity remains a long-term goal. Herein, we report a new N-molecule-assisted self-catalytic carbonization process in augmenting the intrinsic Fenton-like activity of metalorganic-framework-derived carbon hybrids. During carbonization, the N-molecules provide alkane/ammonia gases and the formed iron nanocrystals act as the in situ catalysts, which result in the elaborated formation of carbon nanotubes (in situ chemical vapor deposition from alkane/iron catalysts) and micro-/meso-porous structures (ammonia gas etching). The obtained catalysts exhibited with abundant Fe/Fe-N x /pyridinic-N active species, micro-/meso-porous structures, and conductive carbon nanotubes. Consequently, the catalysts exhibit high efficiency toward the degradation of different organic pollutions, such as bisphenol A, methylene blue, and tetracycline. This study not only creates a new pathway for achieving highly active Fenton-like carbon catalysts but also takes a step toward the customized production of advanced carbon hybrids for diverse energy and environmental applications.

Ultrathin 2D Metal–Organic Framework Nanosheets In situ Interpenetrated by Functional CNTs for Hybrid Energy Storage Device

“…As for C 1 s spectrum (Fig. S6), two major peaks at 284.5 and 288.5 eV correspond to phenyl carbons (C=C) and carboxylate carbons (O-C=O), respectively [50,52,53]. N 2 adsorption-desorption measurements were employed to analyze the specific surface area and porous nature of as-synthesized samples.…”

Two-Dimensional Platinum Diselenide: Synthesis, Emerging Applications, and Future Challenges

“…CVD is an important synthesis method to prepare high quality 2D materials with scalable size, controllable thickness, and perfect crystal structure for both fundamental research and practical applications [101][102][103][104]. To date, various materials with controllable layer number, lateral size, and microstructure have been successfully prepared via CVD methods, such as graphene, TMDC, Xene, boron nitride, and MXene.…”

Transition Metal and Metal–Nx Codoped MOF‐Derived Fenton‐Like Catalysts: A Comparative Study on Single Atoms and Nanoparticles

“…Discovery of the catalytic performances of transition metalbased nanoparticles (NPs) and single-atom sites (SAs) is a reactions, especially the carbon hybrids with elaborated nanostructures, prominent catalytic activity, and excellent synergic effects. [16,[25][26][27][28][29] However, to the best of our knowledge, although many reports of transition metal-based catalysts have been applied in Fenton-like catalysis, little work has been conducted to compare the catalytic activities and efficiencies of transition metal-based NPs and SAs systematically. To compare the performances, the catalysts must exhibit efficient catalytic activities, and similar mesoporous structures and conductive carbon channels, which allow a feasible validation of the catalytic effects of transition metal-based NPs and SAs.…”