Tailoring surface morphology of heterostructured iron-based Fenton catalyst for highly improved catalytic activity

Design and perspective of amorphous metal nanoparticles from laser synthesis and processing

“…In this respect, the synthesis of A-NPs or even metallic glass nanoparticles (MG-NPs) holds the combined features of amorphous structure and size effect of nanoscale. However, although the gas atomization (as a rapid solidification method) and the highenergy ball milling have been widely used for manufacturing MG powders, 17,18 it is still hard to achieve nano-size due to technical limitations. Chemical reduction method is also frequently used for synthesis of MG-NPs but usually with the contamination of surfactants.…”

Laser-Generated InOx/ZrO2 Catalysts for CO2 Hydrogenation: Role of In Situ Fragmentation and Ripening Control

“…Therein, small, amorphous InO x particles are present together with the more crystalline In 2 O 3 and ZrO 2 . The inset is the fast Fourier transform (FFT) of the ∼10 nm large NPs, where the halo rings suggest their amorphous nature . Noticeably, these amorphous spherical particles are only found in batches S2 and S3 (Figure S5) but not in S1.…”

“…The inset is the fast Fourier transform (FFT) of the ∼10 nm large NPs, where the halo rings suggest their amorphous nature. 51 Noticeably, these amorphous spherical particles are only found in batches S2 and S3 (Figure S5) but not in S1. This structural difference depending on the laser wavelength is in line with the trend of InO x particle size, which indicates that the ns-VIS-laser does not simply carry out in situ fragmentation along with ablation but also affects the InO x crystallinity, resulting in smaller colloids with a higher degree of amorphousness.…”

Fe3O4@N-doped carbon derived from dye wastewater flocculates as a heterogeneous catalyst for degradation of methylene blue

“…Thus, the development of a high-efficiency, low-cost, and easy-tosynthesize Fenton catalyst for the degradation of organic wastewater is desirable. 5,26 Electrocoagulation (EC) has received increasing attention because of its low cost and practicability for treating pollutants; it generates in situ coagulant species Fe 2+ (or Al 3+ ) and OH-at the anode and the cathode, respectively, forming polymeric species and hydroxide flocculants, which can then agglomerate heavy metals, organic compounds, or other pollutants. [27][28][29] Various operational parameters, such as current density, initial pH, applied potential, electrode material, and electrode spacing, have been extensively explored for optimizing EC.…”

“…Thus, the development of a high-efficiency, low-cost, and easy-to-synthesize Fenton catalyst for the degradation of organic wastewater is desirable. 5,26…”