While metal-organic frameworks (MOFs) exhibit excellent potential in extensive catalytic reactions, predictably synthesizing MOF nanoparticles (NPs) with desired and uniform sizes remains a great challenge. Here, mild efficient ultrasound-assisted synthetic method has been developed to prepare ZIF-8, ZIF-67, Co/ZIF-8 well-designed particle size morphology. By adjusting the cobalt content doped ...

Aqueous biphasic catalysis is a convenient approach to convert organic, partially soluble molecules in water. However, converting more hydrophobic substrates is much more challenging as their solubility in water is extremely low. During the past ten years, substantial progress has been made towards improving the contact between hydrophobic substrates and a hydrophilic transition-metal catalyst....

This paper argues that Information Technology (IT) needs to be demystified, through critical consciousness, for educators to focus on IT as a means to enhance learning. It goes on to define the technical, sociohistorical and political-ideological levels of IT and to identify four theoretical constructs: tutorial, machine-as-human, tool kit and catalyst. Pervading these constructs is the underst...

The super-Brownian motion X % in a super-Brownian medium % constructed in DF96a] is known to be persistent (no loss of expected mass in the longtime behaviour) in dimensions one ((DF96a]) and three ((DF96b]). Here we ll the gap in showing that persistence holds also in the critical dimension two. The key to this result is that in any dimension (d 3); given the catalyst, the variance of the proc...

Coal liquefaction involves cleavage of methylene and dimethylene and ethertype bridges connecting polycyclic aromatic units. The selected compounds for model coal liquefaction reactions are 4-( 1-naphthylmethy1)bibenzyl (NMBB) and several oxygen-containing compounds. This report mainly describes the synthesis and screening of selected iron and molybdenum compounds as precursors of dispersed cat...

Metalloporphyrins have been regarded as one of the most promising electrocatalysts for oxygen reduction reactions (ORRs) due to their ease structure modification and robust coordinated M−N4 environment. However, electrocatalytic activity, selectivity stability metalloporphyrin-based composite catalysts are often reported be much poorer than those Pt-based materials, arousing researchers devote ...

• Hydrazine binds to the ? 1 -NiZn surfaces via N lone-pair of electrons. more strongly bimetallic catalyst than monometallic Ni and Zn. Stronger hydrazine adsorption is attributed synergistic effects from Bidentate geometries are energetically favourable monodentate ones. We present a systematic first-principles density functional theory study with dispersion corrections (DFT-D3) on experiment...

Abstract Supported Fe‐doped Pd‐nanoparticles (NPs) are prepared via soft transformation of a PdFe‐metal oraganic framework (MOF). The thus synthesized bimetallic PdFe‐NPs supported on FeO x @C layers, which essential for developing well‐defined and distributed small NPs, 2.3 nm with 35% metal loading. They used as bifunctional nanocatalysts the electrocatalytic water splitting process. display ...

A series of monometallic borohydrides and borohydride eutectic mixtures have been investigated during thermal ramping by mass spectroscopy, differential scanning calorimetry, and photography. Mixtures of LiBH4-NaBH4, LiBH4-KBH4, LiBH4-Mg(BH4)2, LiBH4-Ca(BH4)2, LiBH4-Mn(BH4)2, NaBH4-KBH4, and LiBH4-NaBH4-KBH4 all displayed melting behaviour below that of the monometallic phases (up to 167 °C low...