The effect of cellulose loading on the photoactivity of cellulose-TiO2 hybrids for hydrogen production under simulated sunlight
| Autor: | Renan Tavares Figueiredo, Inmaculada M. Leo, Silvia Maria da Silva Egues, Iraí Tadeu Ferreira de Resende, Ana Claudia De Melo Oliveira, Luma M. S. Brandão, Erika Soto Morillo, J.L.G. Fierro, Marluce S. Santos, Rufino Manuel Navarro Yerga |
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| Rok vydání: | 2017 |
| Předmět: |
Ethanol
Materials science Hydrogen Renewable Energy Sustainability and the Environment Scanning electron microscope Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound Fuel Technology chemistry Chemical engineering Elemental analysis Photocatalysis Cellulose Fourier transform infrared spectroscopy 0210 nano-technology Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 42:28747-28754 |
| ISSN: | 0360-3199 |
| Popis: | This work reports the use of cellulose-TiO2 hybrids as photocatalysts for hydrogen production from aqueous ethanol solutions under simulated sunlight. The influence of cellulose loading on hybrids incorporated by impregnation was studied. The cellulose-TiO2 hybrids were characterized by elemental analysis (CHNS), thermo-gravimetric (TGA), N2 adsorption-desorption isotherms (BET), X-ray diffraction (XRD), UV–vis, Fourier transform infrared spectrometry (FTIR) and scanning electron microscopy (SEM). The experimental results show that cellulose loading influence on the physico-chemical properties and on photoactivity of cellulose-TiO2 hybrids for H2 production from ethanol solutions. All hybrids show a significant increase in the H2 production rate respect to that achieved on bare TiO2. The H2 production rate over cellulose-TiO2 hybrids depend on the cellulose coverage on TiO2, achieving the better photoactivity the hybrid formed with intermediate cellulose loading. |
| Databáze: | OpenAIRE |
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