نتایج جستجو برای: cobalt sulfide

تعداد نتایج: 47517  

Journal: :international journal of bio-inorganic hybrid nanomaterials 0

mnco2o4 (mno-co2o3) nanocomposite as a binary oxide has been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors and then characterized by scanning electron microscopy-energy dispersive micro-analysis (sem-edx) and x-ray diffraction (xrd) techniques. in this work, we report the hydrolysis kinetics reactions of semi mustard (chloroethyl ethy...

Journal: :Environmental Health Perspectives 1994
S Kawanishi S Inoue K Yamamoto

Some carcinogenic metal compounds [chromate(VI), Fe(III) nitrilotriacetate, cobalt(II), and nickel(II)[ induced formation of various oxygen radical species in the presence of hydrogen peroxide. These oxygen radicals were suggested to give different kinds of site-specific DNA damage; 8-hydroxyl-2'-deoxyguanosine formation is included in the DNA damage. Using pulsed-field gel electrophoresis, nic...

2008
T. Yamazaki

Manganese nodules on deep ocean floor have received attention as future resources for Co, Ni, Cu, and Mn these 40 years. The mining and metallurgical processing technologies studied these 40 years have been reviewed and re-examined on the basis of current interests, technologies, and economies by the author. The preliminary results of economic evaluation at the three timings, such as the last 1...

2017
Kristin L. Kraus Alessandro Perego Cameron Olsen J. Ryan Peterson Kameron Hansen John S. Colton Richard K. Watt

Recent studies have demonstrated the potential of different nanocrystals synthesized in ferritin to act as light harvesters for high-efficiency solar cells. This study investigates the possibility of using these nanocrystals as alternative dyes for dye-sensitized solar cells. Four different dye-sensitized solar cells were successfully fabricated using iron, cobalt, manganese, and lead-sulfide n...

2016
Bo Li Yuxia Hu Jiajia Li Maocheng Liu Yumei Hu Chun-Liang Chen

Cobalt sulfide (Co9S8) particles are compounded as the electrode materials of supercapacitors by a mechanical alloying method. They show excellent properties including good cycling stability and high specific capacitance. A supercapacitor is assembled using Co9S8 as the anode and activated carbon (AC) as the cathode. It gains a maximum specific capacitance of 55 F ̈g ́1 at a current density of 0....

Journal: :Dalton transactions 2011
Wenjun Dong Xuebin Wang Bingjie Li Lina Wang Benyong Chen Chaorong Li Xiao Li Tierui Zhang Zhan Shi

Hierarchical and well-defined cobalt sulfide with flower-like, cube-like, ball-like, and surface hollowed-out nanostructures were successfully prepared by a facile one-pot hydrothermal synthesis approach, employing Co(NO(3))(2)·6H(2)O as a cobalt precursor and thiourea as a sulfur source. The morphologies of these structures can be easily controlled by simply adjusting the molar ratio of reacta...

MnCo2O4 (MnO-Co2O3) nanocomposite as a binary oxide has been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors and then characterized by scanning electron microscopy-energy dispersive micro-analysis (SEM-EDX) and X-ray diffraction (XRD) techniques. In this work, we report the hydrolysis kinetics reactions of semi mustard (chloroethyl ethy...

MnCo2O4 (MnO-Co2O3) nanocomposite as a binary oxide has been successfully prepared by precipitation method using cobalt nitrate and manganese nitrate as the precursors and then characterized by scanning electron microscopy-energy dispersive micro-analysis (SEM-EDX) and X-ray diffraction (XRD) techniques. In this work, we report the hydrolysis kinetics reactions of semi mustard (chloroethyl ethy...

Journal: :The Australian journal of experimental biology and medical science 1971
M R Gardiner H Nicol

An interaction between dietary cobalt and selenium was revealed when groups of female weanling rats were fed standard rations, containing different concentrations and ratios of the two trace elements, continuously over a 15 week period. It was found that the levels of selenium in the heart and skeletal muscle were positively related to dietary selenium and negatively related to dietary cobalt, ...

Journal: :Catalysis Today 2021

Insights into the cobalt sulfide formation upon sulfidation (10 % H2S/H2) of cobalt-based materials with 4 wt CoO supported on alumina or silica were obtained by Quick-X-ray absorption spectroscopy monitoring analysed multivariate curve regression analysis. A common pathway is evidenced involving defective CoS2 species transformed around 200−250 °C Co9S8 species. Upon cooling down under sulfidi...

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