Reactions of Cp*Ta(NAr)Cl2 and CpM(NAr)Cl2 (M = Nb, Ta; Ar = 2,6-C6H3(i)Pr2) with NaBH4 in the presence of an excess of PMe3 provided facile access to the corresponding dihydride derivatives Cp(R)M(NAr)H2(PMe3) (Cp(R) = Cp, Cp*). Reaction of Cp*Nb(NAr)Cl2 with NaBH4 in the absence of phosphine gave the Nb(+5) borohydride-hydride complex Cp*Nb(NAr)H(η(2)-BH4). When the corresponding reactions fo...

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...

Nickel nanoparticles (Ni NPs) supported on Poly(vinylidene fluoride-co-hexafluoropropylene) nanofibers (PVDF-HFP NFs) were successfully synthesized through electrospinning and in-situ reduction of Ni2+ salts into the surface PVDF-HFP NFs to form metallic Ni [email protected] NFs. Different percentages nickel acetate tetrahydrate (NiAc) (10 %, 20 30 40 % wt.) based PVDF-HFP. The formation tiny N...

In this work, sodium borohydride was used as a strong reductant of traces platinum complex ions. The investigations the kinetics redox reaction between platinum(IV) chloride ions and were carried out. For first time, kinetic experiments out in basic medium (pH~13), which prevents NaBH4 from decomposition suppresses release hydrogen to environment. rate constants Pt(IV) reduction Pt(II) under di...

The reactivity of sodium borohydride in the presence of other species has been examined by adiabatic calorimetry. In combination with water, sodium borohydride exhibits an exotherm at room temperature accompanied by generation of gas (presumed to be hydrogen). Addition of potassium hydroxide to a sodium borohydride-water mixture is found to stabilize the solution and require a higher temperatur...

The graphene which is a two dimensional carbon structure has been significantly explored due to its excellent mechanical and physical properties. Based on its prominent properties, graphene has a wide range of useful applications. Among the methods for synthesizing graphene, chemical method is known as the most powerful method for mass production of graphene. During the process, to achieve high...

Currently, the catalytic reduction of nitrobenzene requires more efficient and low-cost catalysts. In this work, a new copper-based metal-organic framework (MOF) was designed by calcination Cu–MOF at 700 °C (denoted as Cu@C). The catalyst showed superior performance toward nitrobenzene, using sodium borohydride (NaBH4) reducing agent, exhibited high conversion (100%) quick reaction time (8 min)...

Gold nanoparticles (AuNP) are widely used for reaction catalysis. The common understanding is that the smaller particles, more reactive they are. It reported here this not always case citrate (Ct) or polyvinylpyrrolidone (PVP) stabilized AuNP in catalytic reduction of 4-nitrophenol with sodium borohydride (NaBH4), when total surface area kept constant. results prove size range 10–58 nm, reactiv...

In recent decade, conjugated microporous polymers (CMPs) were treated as one of the superior porous materials for CO2 uptake. Herein, we prepared two azo-linked CMPs namely: azo-carbazole (Azo-Cz) and azo-phenothiazine (Azo-Tz) from reduction corresponding nitro monomers using sodium borohydride (NaBH4). The obtained well characterized many spectroscopic techniques. According to TGA BET analyse...

Hydroquinone (HQ) was used as the principal chemical reducing agent to prepare aqueous silver nanocolloids from silver nitrate. The data demonstrate that HQ is unable to initiate the particle growth process on its own, but is able to sustain particle growth in the presence of pre-existing metallic clusters. This unique selectivity is similar to that seen in photographic systems. Data are presen...