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( Nadir Abbas ),박성수,( Shao Godlisten Namwel ),( Syed Muhammad Imran Hassan ),( Haider Muhammad Salman ),전순정,김희택 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.1
Carbon materials are getting increasingly popular in catalysis of different kinds and types because of their remarkable properties. Addition of Graphite to well-known Titania photocatalyst may generate unique photochemical properties. For this reason we synthesize TiO<sub>2</sub>-Grpahite nano composite by a modified wet chemical method. We examined the effect of different ratios of Graphite addition on Titania. Synthesized product was characterized by SEM and TEM for morphological character and XRD for crystallographic studies. Photocatalytic tests of composite are conducted to validate its potential in removal of hazardous organic wastes. Optimum conditions for Graphite addition are investigated.
( Nadir Abbas ),김희택,박성수,전순정,( Syed Muhammad Imran Hassan ) 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Fe2O3-TiO2 materials are visible light active photocatalytic materials. In this work, we supported the TiO2-Fe2O3 materials with CNT to enhance the morphological, opitical and visible light photocatalytic properties of TiO2-Fe2O3 materials. Ternary composites were synthesized by a simple one pot Sol-gel in-situ impregnation method. Product materials were tested by XRD, SEM, TEM, FTIR and UV-Vis DRS studies. Catalytic properties were investigated in the degradation reaction of organic dyes. It was found that addition of CNT to the TiO2-Fe2O3 matrix have profound positive effects in terms of material properties.
Nadir Abbas,Godlisten N. Shao,M. Salman Haider,S.M. Imran,박성수,김희택 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.39 No.-
An inexpensive sol–gel technique to synthesize TiO2-Fe2O3 nanocomposites with improved structuraland photochemical properties is introduced. A series of TiO2-Fe2O3 nanocomposites with different Fe2O3contents were prepared through cheap TiO2 precursor titanium oxychloride (TiOCl2). The physicochem-ical properties of the samples were examined by XRD, XRF, SEM, EDX, HRTEM, UV–vis DRS, FTIR, TGA andnitrogen gas physisorption studies. The effects of calcination temperatures and Fe2O3 content on themesostructure and photocatalytic strength of the prepared TiO2-Fe2O3 composites were investigated. Results showed that composites with distinct structural, optical and photochemical properties can beformed by varying Fe2O3 content.
Synthesis and electrical properties of PES-PANI-CNT nano composite conducting polymers
( Nadir Abbas ),( Shao Godlisten Namwel ),( Haider Muhammad Salman ),박성수,전순정,김희택 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
A Ternary Conducting Polymer was prepared by solution blending Poly ethersulfone, Poly aniline (PANi) and Carbon nanotubes (CNT) in an organic solvent by varying ratio of CNT as 0.5%, 1%, 1.5%, 2% and 3% while keeping PANi 1% in all samples. Product was characterized by techniques including XRD, SEM, Mechanical strength testings and electrical conductivity measurements. It appeared that CNT is well dispersed in the nanocomposites resulting in desirable electrical and mechanical properties. Reinforced Polymer product further showed consecutiveness with varying degrees of carbon reinforcement, thus making it suitable for sensing applications.
Abbas, Nadir,Kim, Hee Taik The Polymer Society of Korea 2016 Macromolecular Research Vol.24 No.12
Herein, we report the synthesis of a high performance electromagnetic interference shielding (EMI) composite by utilizing polyethersulfone (PES) as a model matrix. Thin films of PES filled with conductive multi-walled carbon nanotubes (MWCNTs) were fabricated by a simple solution casting technique. The effect of filler concentration on EMI shielding efficiency, dielectric constant, electrical conductivity, hardness and thermal stability were investigated, and these properties were found to improve with the filler amount. An exceptionally high EMI shielding effectiveness of 35 dB (well above the common commercial EMI shielding requirement of 20 dB) was obtained in the X-band at a low thickness of 0.5 mm. Furthermore, the PES based CNT composites displayed a high electrical conductivity of 450 S/m. A high dielectric constant of 127 was obtained for a 20 wt% CNT filled polymer composite which was 40 times larger than the pure polymer matrix. Characterization tools indicate the intimate contact between the host matrix (PES) and CNT filler, which provided synergistic effects for improving dielectric properties as well as EMI shielding.
Tuning the synergistic effects of TiO2-CNT hybrids for biomedical applications
( Nadir Abbas ),김희택 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0
Titanium dioxide shows antibacterial properties in the presence of light due to the chemical phenomenon triggered by the photo generated electrons and holes. However, in the absence of light it shows little or no antibacterial properties. In this work, we synthesized TiO2-CNT heterostructured materials. These hybrid materials show antibacterial properties in the absence of light. Antibacterial properties and cytoxicity of these materials were profoundly studied. The synthesized materials were characterized by XRD, Raman spectroscopy, SEM, TEM, FTIR and nitrogen gas phsyiosorption studies. Investigations on the effects of CNT doping on the materials properties were carried out.