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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Inorganic Chemistry Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Interaction,Photovoltaic,Dye-sensitized solar cells,Redox mediator,Cobalt complexes
- چکیده:
- چکیده انگلیسی: The effects of changing ligand structures of cobalt complexes as electrolytes on the performance of the dye-sensitized solar cell were investigated. In this paper, cobalt(II/III) tris(2,2′-bipyridine), cobalt(II/III) tris(4,4′-dimethyl-2,2′-bipyridine) and cobalt(II/III) tris(4,4´-dimethoxy-2,2′-bipyridine) complexes as electrolytes in conjugate with organic dye D149 were investigated to consider the correlation of the cobalt complexes structural on the efficiency of the dye-sensitized solar cell. The Voc values of the prepared cells are related to the redox potential of their complexes and the maximum Voc was observed with cobalt(II/III) tris(2,2′-bipyridine) electrolyte. The obtained results represented that the cobalt(II/III) tris(4,4´-dimethyl- 2,2′-bipyridine) electrolyte has the highest efficiency in the solar cell compared with other cobalt complexes. These observed results have been interpreted by a possible interaction between the dye and cobalt complexes, which is more pronounced in the cobalt(II/III) tris(4,4´-dimethoxy- 2,2′-bipyridine) cell. This interaction should be fine-tuning with the structure of dye and complex to increase the efficiency of the dye-sensitized solar cell. In addition, the results demonstrated that a thinner layer of the TiO2 film decrease both the effects of mass transport issues and the charge recombination, therefore, it has significant advantages for cobalt electrolyte.
- انتشار مقاله: 20-11-1398
- نویسندگان: Zahra Parsa,Pooya Tahay,Navid Rabiee,Nasser Safari
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Bioengineering Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Nanocomposite,Capsaicin,biocompatibility,Cobalt ferrite,ZSM-5
- چکیده:
- چکیده انگلیسی: Introduction: A range of strategies for eliminate the cancer tissue have been used, consisting of medical operation, chemo and radiotherapy.
Objective: There is a significant issue about chemotherapy, the medications targeted delivery to object tissue cells is found challengeable because of the presence of numerous physical obstructions.
Materials and Methods: In the present study, we synthesized and characterized a novel and promising specific pH-stimuli-responsive tumor-targeted DDS. The synthesized magnetic nanoparticles (Nanocomposite) were fully characterized by FESEM, TEM, DLS, XRD and VSM.
Results: The morphology of Nanocomposite are acquired in semi-spherical shape with the specified diameters. The Capsaicin was successfully loaded Nanocomposite represented promising and admissible biocompatibility as well as showing higher toxicity versus SK-N-MC cells in comparison with control group.
Conclusion: Furthermore, uptake investigation proved that the effectively internalized Drug Delivery System (DDS). In addition, the in vitro assay represented that the synthesized Nanocomposite can act nearly fully pH stimuli-responsive and release the Capsaicin at controlled condition. MTT assay verified the higher toxicity of Capsaicin loaded into the Nanocomposite in comparison with the control group. MRI in vitro investigation demonstrated that the prepared Nanocomposite can utilized as MRI imaging agent.- انتشار مقاله: 25-11-1397
- نویسندگان: Navid Rabiee,Mohammad Rabiee
- مشاهده
- جایگاه : پژوهشی
- مجله: Iranian Journal of Chemistry and Chemical Engineering
- نوع مقاله: Journal Article
- کلمات کلیدی: nano-composite,Simultaneous detection,carbon-based nanomaterial,multi-nano sensor
- چکیده:
- چکیده انگلیسی: In this study, a multi nanosensor was fabricated for the simultaneous detection of carbon dioxide, methane, ethanol, and ammonia gases, and its electrochemical response to various concentrations of these gases were investigated. In order to fabricate this multi nanosensor, in the first phase, the Graphene-Oxide/Polyaniline (GO/PANI) nanocomposite was synthesized. Chemical composition, morphology and the structure of the nano-composite was studied by Fourier Transform InfraRed (FT-IR) spectroscopy, Field Emission-Scanning Electron Microscopy (FE-SEM), High-Resolution Transmission Electron Microscopy (HR-TEM) and X-Ray Diffraction (XRD). The results indicate that the GO successfully synthesized and the polyaniline particles are well bonded on the surface of the GO sheets. In the second phase, the formed nano-composite was placed on silver-coated electrodes and then, by placing the nanoparticles of aluminum oxide, zinc oxide, tin oxide, and titanium oxide, the different parts of the multi-nano sensor were became more sensitive toward the four mentioned gases. The responsiveness and sensitivity of the multi-nano sensor to each of the gaseswere measured by amperometric experiments and the results showed that the sensitivity of the multi-nano sensor fabricated to the detection of the above gases is acceptable. The results of the electrochemical tests showed that the response of each multi-nano sensor component to a mixture of the above four gas is defined as a four unknown equation and with considering the responses of 4 multi-nano sensor components simultaneously to the 4-gas mixture, 4 × 4unknown equations are obtained, which by solving the equation one can be found the exact concentration of each of the 4 measured gases.
- انتشار مقاله: 08-08-1397
- نویسندگان: Hamid Reza Moshayedi,Mohammad Rabiee,Navid Rabiee
- مشاهده
- جایگاه : پژوهشی
- مجله: Inorganic Chemistry Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Interaction,Photovoltaic,Dye-sensitized solar cells,Redox mediator,Cobalt complexes
- چکیده:
- چکیده انگلیسی: The effects of changing ligand structures of cobalt complexes as electrolytes on the performance of the dye-sensitized solar cell were investigated. In this paper, cobalt(II/III) tris(2,2′-bipyridine), cobalt(II/III) tris(4,4′-dimethyl-2,2′-bipyridine) and cobalt(II/III) tris(4,4´-dimethoxy-2,2′-bipyridine) complexes as electrolytes in conjugate with organic dye D149 were investigated to consider the correlation of the cobalt complexes structural on the efficiency of the dye-sensitized solar cell. The Voc values of the prepared cells are related to the redox potential of their complexes and the maximum Voc was observed with cobalt(II/III) tris(2,2′-bipyridine) electrolyte. The obtained results represented that the cobalt(II/III) tris(4,4´-dimethyl- 2,2′-bipyridine) electrolyte has the highest efficiency in the solar cell compared with other cobalt complexes. These observed results have been interpreted by a possible interaction between the dye and cobalt complexes, which is more pronounced in the cobalt(II/III) tris(4,4´-dimethoxy- 2,2′-bipyridine) cell. This interaction should be fine-tuning with the structure of dye and complex to increase the efficiency of the dye-sensitized solar cell. In addition, the results demonstrated that a thinner layer of the TiO2 film decrease both the effects of mass transport issues and the charge recombination, therefore, it has significant advantages for cobalt electrolyte.
- انتشار مقاله: 20-11-1398
- نویسندگان: Zahra Parsa,Pooya Tahay,Navid Rabiee,Nasser Safari
- مشاهده