The increase of capacitance in the Ni-loaded biochar supercapacitor following microwave treatment was mainly attributed to the conversion of Ni into NiO and NiOOH, which was evidenced by X-ray diffraction and X-ray photoelectron spectroscopy. The biochar supercapacitors, especially microwave-treated Ni...
Compared with the existing NiO-to-Ni preparation technique, the method has the advantages that the high-efficiency NiO to Ni conversion is realized at the lower temperature, the reducing agents, such as H2, petroleum gas and coke, are not needed, and the transportation and storage of H2 and...
Preparation of NiO/MWCNTs nanocomposite and its application for cadmium ion removal from aqueous solutions. J. Mater. Res. Technol. 2022, 19, 1961–1971. [Google Scholar] [CrossRef] Mwafy, E.A.; Mostafa, A.M. Tailored MWCNTs/SnO2 decorated cellulose nanofiber adsorbent for the removal of ...
This study describes the continuation of the development of the thin-film Ni–NiO–Ni diodes as fast antenna-coupled detectors on one hand and the extension of their range of operation to the mixing of 28-THz infrared radiation on the other hand. For these purposes, the contact area of the...
The formation of O2 and CO2 would lead to the loss of oxygen and thus the transformation from layered to rock-salt phase (Fig. 2) (Zhang, 2020b). The formed NiO-like rock-salt phase is not electrochemically active and ionic conductive, leading to increased impedance and performance ...
This deactivation has been attributed both to the continuous reduction of the NiO oxygen over-stoichiometry in the reaction conditions and to the formation of the NiNb 2O 6 phase thermodynamically stable at the catalytic reaction temperature. Attempt to regenerate the catalysts has failed. 展开 ...
These reaction results coupled with characterization of pristine and spent catalysts suggest that the catalysts reach similar active states during catalytic pyrolysis, regardless of pretreatment, as NiO undergoes in situ reduction to Ni by biomass pyrolysis vapors. This reduction of NiO to Ni was confi...
近日,中国海洋大学黄明华教授课题组等在国际知名期刊Nano Research上发表了题为Controllable Ni/NiO interface engineering on N-doped carbon spheres for boosted alkaline water-to-hydrogen conversion by urea electrolysis的研究工作。 该工作通过简单的水热和热解耦合策略,在氮掺杂的碳球上成功制备了晶相/非晶相CA-...
Delamination of the outer NiO layer often occurred at the columnar-equiaxed interface which could be cured by CeO 2 deposition on the foil prior to the oxidation process. CeO 2 was deposited by conversion immersion using Ce(NO 3) 3 .6H 2 O solution. (200) NiO formed on this coated ...
Such catalysts are highly active and selective with promising stability in the title reaction, for example, the NiO-CeO 2 -Al 2 O 3 /Ni-foam achieves a high methane conversion of 86.4% with 91.2%/89.0% selectivities to H 2 /CO and is stable for at least 100hat 700°C and a high ...