| A Facile green synthesis method for preparation of Ni/Zn/Al LDH-MOF composites nanocatalysts: application to electrocatalytical oxidation of methanol |
| کد مقاله : 1108-CNF |
| نویسندگان |
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علی پاشازاده *1، بیوک حبیبی2، سارا پاشازاده3، لطفعلی سقط فروش4، ذوالفقار رضوانی2 1دانشجوی دکترای دانشگاه شهید مدنی آذربایجان تبریز 2عضو هیئت علمی گروه شیمی دانشگاه شهید مدنی آذربایجان تبریز 32 گروه شیمی، دانشکده علوم، دانشگاه شهید مدنی آذربایجان، تبریز 53714-161، ایران 4عضوهیئت علمی گروه شیمی دانشگاه پیام نور مرکز خوی |
| چکیده مقاله |
| The unbridled use of fossil fuels is a serious problem that has become increasingly evident over the years. As such fuels contribute considerably to environmental pollution, there is a need to find new, sustainable sources of energy with low emissions of green house gases[1]. Thus, the use alternative energy source especially direct methanol (CH3OH) fuel cells (DMFCs) that offer maximum efficiency with highly efficient electrocatalyst and minimal pollution and carbon emissions has become a major goal. Therefore, the present work, we have designed Ni/Zn/Al layered double hydroxide (LDH) nanosheets and metal-organic frameworks (MOF) nanoparticles by electrochemical deposition (ED) and simple chemical in-situ growth method on the carbon ceramic electrode at mild conditions[2]. The Ni/Zn/Al LDH-MOF nanocatalysts that was characterized by means of various instrumental techniques. Then, the Ni/Zn/Al LDH-MOF/CCE was used for the electrocatalytic oxidation of methanol in alkaline media[3]. In electrochemical studies, the kinetic parameters of the electron transfer coefficient (α) and number of electrons involved in the rate determining step (nα) for the oxidation of methanol were determined using cyclic voltametry. The anodic currents showed a linear dependence on the concentration of methanol. These results showed that the pretreatment of the LDH with MOF nanoparticles remarkably improved electrocatalytical performance synthesized nanocatalysts and consequently opens a way to design a high performance capable electrocatalyst for direct methanol fuel cell systems. |
| کلیدواژه ها |
| Keywords: Methanol, Fuel cells, Electrocatalytic oxidation, Metal organic framework, Layered double hydroxide |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |