Preparation of NiO by Simple Heat Treatment Method and its Application in Photocatalytic Water Splitting

Solubility Measurements of NaTaO3 in Molten Na2MO4 (M = Mo, W, and S) and Growth of Milli-Order Crystals at High Frequency

“…Pure NaTaO 3 was required to prepare pure NaTaO 3 pellets; thus, we first examined the synthesis of NaTaO 3 using the solid-phase method, as mentioned in previous studies. , By changing the mixing ratio of the Na and Ta sources, we synthesized several NaTaO 3 powders at 1000 °C. The XRD patterns of the synthesized NaTaO 3 powders are shown in Figure .…”

Polyaniline Induced Trivalent Ni in Laser-Fabricated Nickel Oxides for Efficient Oxygen Evolution Reaction

“…For industrial application, the development of efficient and inexpensive electrocatalysts to replace the traditional noble metal-based catalysts is urgently needed, i.e., transition metal (Fe, Co, Ni, etc. )-based electrocatalysts, − due to their tunable 3d orbitals with optimal adsorption and desorption of intermediates during the reaction. , Among them, nickel oxides, some of the most efficient precious metal-free catalysts for alkaline OER, have attracted a great deal of attention due to the good electrocatalytic activity, high abundance, low cost, and high stability under alkaline conditions. ,− To boost the catalytic OER activity of nickel oxides, much effort has been devoted to improve its low conductivity and intrinsic OER activity, e.g., the growth of nickel oxides on conductive carbon materials, the optimization of the morphology, doping with a variety of elements, etc. − Recent studies have demonstrated that transition metals at high oxidation states exhibit superior OER activity, including the high-valence state of nickel (Ni 3+ ). , However, the preparation of such a high oxidation state generally requires relatively harsh reaction conditions, such as a high temperature or a highly oxidizing atmosphere. − Moreover, Ni 3+ in a high oxidation state is unstable under ambient conditions . Polyaniline (PANI) as a highly conductive polymer has attracted widespread attention in electrocatalysis.…”