iron-aluminum alloys are one of the most resistant alloys against sulfidation/oxidation environments with low oxygen partial pressures. the high sensitivity to hydrogen embrittlement is the main reason for decreasing of their room temperature ductility. there is a drop of strength above 600 c and their creep resistance is fairly weak. it is possible to increase ductility up to 15 percents and i...

A novel, efficient and green MOFs-templated sulfidation route has been developed to synthesize Cu(1.96)S-C hybrid composites, in which ultrafine Cu(1.96)S nanoparticles are embedded uniformly within porous carbon octahedra. The as-synthesized composites exhibit high specific capacitance and good cycling performance in supercapacitors.

Unusual CoS(2) ellipsoids with anisotropic tube-like cavities have been synthesized from the simultaneous thermal decomposition and sulfidation of a preformed cobalt carbonate precursor. The as-prepared CoS(2) ellipsoids show interesting supercapacitive properties with high capacitance and good cycling performance.

Highly dispersed Co particles in MCM-41 were prepared by direct addition of CoCIz to the synthesis gel. The small clusters of Co did not sinter during reduction and sulfidation. Incorporation of Co into the MCM-41 lattice was not observed. The addition of Co to the synthesis gel did not alter the structural characteristics of the MCM-41 samples.

We investigate the evolution of structures that result when spherical Cd nanoparticles of a few hundred nanometers in diameter react with dissolved molecular sulfur species in solution to form hollow CdS. Over a wide range of temperatures and concentrations, we find that rapid Cd diffusion through the growing CdS shell localizes the reaction front at the outermost CdS/S interface, leading to ho...

Indonesia sebagai negara yang memiliki peran penting dalam penyediaan bahan baku emas untuk dunia sudah tentu harus fokus mengolah emas. Pengolahan sendiri umum dijumpai dengan penambahan endapan jenis tembaga porfiri dan sulfida rendah (low sulfidation). Kedua tersebut karakteristiknya masing-masing cara pengolahan tersendiri mendapatkan logam murni. Mineral kaya tantangan berupa keterdapatan ...

Carbon domains have been obtained at the surface of a MoS2/TiO2 (Evonik, P25) system via oligomerization and cyclotrimerization reactions involved in the interaction of the photoactive material with acetylene. Firstly, MoS2 nanosheets have been synthesized at the surface of TiO2, via sulfidation of a molybdenum oxide precursor with H2S (bottom-up method). Secondly, the morphology and the struct...