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101.
Herein, we introduce the application of nickel hydroxide nanosheets on the electro-etched carbon fiber (ECF) formed via a direct electrodeposition, for fabrication of asymmetric supercapacitor. To confirm the practical applicability of prepared Ni(OH)2–ECF, an asymmetric device was assembled using Ni(OH)2–ECF in combination with an activated carbon (AC) electrode. Our results showed a substantial cycling stability (96% capacitance retention after 10000 cycles) and considerable rate capability at large discharge currents (60% capacitance retention at 8 A g??1) for this asymmetric supercapacitor that may have originated from the good contact between Ni(OH)2 and ECF. A maximum specific capacitance of 88.1 F g??1 was achieved for Ni(OH)2–ECF//AC/CF device and showed considerable rate capability at large discharge currents (60% capacitance retention at 8 A g??1). The results of this study suggest the Ni(OH)2–ECF electrode is an excellent material for fabrication of supercapacitor electrodes.  相似文献   
102.
A N-heterocyclic carbene–copper complex grafted on graphene oxide with an ionic liquid framework was prepared. The synthesis of (i) 1,2,3-triazole derivatives by ‘Click reaction’ and (ii) propargylamine derivatives by ‘A3 coupling reaction’ in aqueous media by this new catalyst were all successfully accomplished. The catalyst is characterized using infrared spectroscopy, Raman spectroscopy, scanning electron microscopy, thermogravimetric analysis and energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, and elemental analysis. The catalyst is reused in the ten reaction cycles without considerable loss of catalytic activity.

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103.
104.
Immobilized sulfuric acid on magnetic Fe3O4 nanoparticles (Fe3O4 MNPs‐OSO3H) as a new solid acid nanocomposite was successfully synthesized and its catalytic activity in a series of condensation reactions was studied. High catalytic activity, simple separation from reaction mixture by an external magnet and good reusability are several eco‐friendly advantages of this catalytic system. It is noteworthy that this catalytic system is applicable to a wide range of spectrum of aromatic aldehydes, and the desired products were obtained in good to excellent yields under mild conditions. The use of ecofriendly solvents makes also this synthetic protocol ideal and fascinating from the environmental point of view.  相似文献   
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Sodium sulfide hydrate has been employed for an efficient reduction of a variety of azides to the primary amines in good-to-excellent yields under solvent-free system and without perturbing many active functionalities such as ether, carbonyl, sulfonyl, and nitro.  相似文献   
108.
The efficient condensation of carbonyl compounds with hydroxylamine hydrochloride under solvent free conditions is described.  相似文献   
109.
Journal of Thermal Analysis and Calorimetry - In this research, formation mechanism and kinetics of vacuum carbothermal synthesis of zirconium carbide using zirconium acetate and sucrose are...  相似文献   
110.
Aromatic nitro compounds can be conveniently reduced to the corresponding primary amines in the presence of S 8 under solvent-free conditions in excellent yields. Alumina supported NaOH catalyses this transformation. Chemoselectivity was observed in the reduction of the nitro group in the presence of phenol, carboxylic acid, aldehyde, and benzyl halide groups.  相似文献   
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