Electrocatalytic hydrogen gas generation by cobalt molybdenum disulfide (CoMoS2) synthesized using alkyl-containing thiomolybdate precursors
| Autor: | Russell R. Chianelli, Jorge Lopez, Geoffrey B. Saupe, Carlos A. Díaz-Moreno, Brenda Torres, Maryam Zarei-Chaleshtori, Dino Villagrán, Yanyu Wu, Tahmina Akter |
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| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Electrolysis Hydrogen Renewable Energy Sustainability and the Environment Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrochemistry Ammonium tetrathiomolybdate 01 natural sciences 0104 chemical sciences Catalysis law.invention chemistry.chemical_compound Fuel Technology chemistry law 0210 nano-technology Molybdenum disulfide Cobalt Alkyl |
| Zdroj: | International Journal of Hydrogen Energy. 42:20669-20676 |
| ISSN: | 0360-3199 |
| Popis: | Cobalt molybdenum disulfide, (CoMoS2) catalysts are evaluated as active electrocatalysts for the production of hydrogen gas in acidic aqueous media. These highly-active hydrogen evolution reaction (HER) catalysts are obtained from pretreatment of ammonium tetrathiomolybdate (ATM) with different amines precursors, and characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and their surface areas are determined by Brunauer–Emmett–Teller (BET) surface area analyses. Electrochemical studies indicate that these CoMoS2 materials exhibit enhanced catalytic performance for hydrogen gas production with overpotentials ranging from 0.127 to 0.144 V, which are significant less than CoMoS2 synthesized directly from ATM under the same synthetic techniques (0.173 V). These CoMoS2 catalysts are also stable in the presence of strong acidic media after a considerably long period of time (10 h) for maintaining their efficiencies for hydrogen gas evolution. |
| Databáze: | OpenAIRE |
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