Vol. 1 No. 1 (2019)

Open Access

Article

Article ID: 571

Desulfurization Of The Dibenzothiophene (DBT) By Using Imidazolium-Based Ionic Liquids(Ils)

by Bilal Kazmi, Awan Zahoor, Hashmi Saud, Zafar Khan Ghouri

Materials Physics and Chemistry, Vol.1, No.1, 2019; 735 Views, 10 PDF Downloads

In this work we examined the industrial scale extraction process of ultra-low sulfur diesel with the help of simulation software ASPEN Plus®. This work focuses on the [Cnmim] [BF4] (imidazolium-based) ionic liquid and employed it in the extractive desulfurization of the dibenzothiophene (DBT) from the model diesel fuel under a very mild process condition. UNIFAC (uniquasi functional activity) was chosen as the thermodynamic method to model the ionic liquid on ASPEN Plus® and different physical and chemical properties were then taken from the literature to be incorporated in the simulation model. Different parametric analysis was studied for the removal of thiophene-based compounds from the model diesel. The results acquired shows the significance of imidazolium-based ionic liquids (ILs) for the extraction of S-contents from the liquid fuels at an optimal process conditions of 40 ℃ and 2 bar pressure with the 2.8: 1 ratio of ionic liquid and model diesel which validates the experimental results obtained previously in the literature.

Open Access

Article

Article ID: 572

Combustion Derived SrTiO3: Synthesis, Characterization and Evaluation of Electrochemical Behavior Towards Quantification of Hg(II) Ions

by Kusuma Manjunath, Prashanth Shivappa Adarakatti, Pandurangappa Malingappa, Gujjarahalli Thimmanna Chandrappa

Materials Physics and Chemistry, Vol.1, No.1, 2019; 752 Views, 13 PDF Downloads

In this work, we are reporting the synthesis of porous SrTiO3 nanoparticles by using solution combustion route employing strontium nitrate and titanium-peroxo complex as oxidizer. The results of physico-analytical techniques revealed that SrTiO3 have a relatively small particle size, good dispersibility and diminished agglomeration. Powder X-ray diffraction pattern shows cubic perovskite structure (space group Pm3m) and the morphology was observed using a scanning electron microscope. The band gap of 3.24 eV was calculated using the diffuse reflectance spectrum. The surface area (~26.51 m2/g) of SrTiO3 was measured by BET method. SrTiO3 nanoparticles show violet-blue-green photoluminescence emission spectrum at room temperature. The photocatalytic degradation was carried out to investigate the photocatalytic activity of SrTiO3 under UV-light and evaluated for the electrochemical quantification of Hg(II) ions in aqueous solution using differential pulse anodic stripping voltammetry. The results reveal that SrTiO3 nanoparticles show better quantification result for Hg(II) ions. 

Open Access

Article

Article ID: 573

Novel synthetic route for growth of gold nanorods via semiconductor procedure

by Noha Ragab Elhalawany, Brian Enders, Ersin Bahceci, Munir Nayfeh

Materials Physics and Chemistry, Vol.1, No.1, 2019; 788 Views, 11 PDF Downloads

We represent here a novel facile synthesis type route based on semiconductor procedure for growth of gold nanorods GNRs using infinitesimal silicon nanoparticles USSiN. The reaction takes place immediately upon mixing monodispersed hydrogen terminated USSiN of 2.9 nm diameter with auric acid HAuCl4 in presence and in absence of an emulsifier. The resulting colloids have been characterized via scanning electron microscope SEM, Energy dispersive spectrometry EDS and optical microscope OM. Photo-luminesence (PL) measurements have been also carried out. Our results show formation of gold nanorods GNRs, gold nanoplates GNPs, gold nanospheres GNSs and filaments. The formed GNRs have near uniform length of 1.5 µm and diameter of 300 nm (5 aspect ratio). The results are consistent with a seedless process in which the H-terminated silicon nanoparticles act as either the reducing as well as the directional growth agent, eliminating the need for toxic cetyl-trimethyl-ammonium bromide CTAB or, which is typically used as the directional growth agent. 

Open Access

Article

Article ID: 575

Investigation of Metal Air-Cooling Process as An Element of Thermal Processing

by Biryukov Alexey Borisovich, Gnitiev P. A.

Materials Physics and Chemistry, Vol.1, No.1, 2019; 663 Views, 10 PDF Downloads

Background: Nowadays on metal tempering and annealing its air cooling (AC) is realized inside furnace with forced coolant delivery. Scientific tools lack for metal AC study and design is substantiated. The aim of this work is to investigate technological and design furnace parameters influence on metal AC duration, as well as disclosure of metal AC heat engineering regularities. Materials and method: For study mathematical model of metal AC is used. It bases on solving the differential non-stationary heat conductivity equation in one-dimensional form for cylindrical ingots and lining. Results: For three lining design types and different technological parameters operation acceleration possibility due to lining design change was studied. It is found that with ceramic fibers on walls and roof acceleration is 31-45% and with all lining made of ceramic fiber it is 44-52% as compared with fireclay brick lining. For a furnace with hearth of fireclay bricks and ceramic fiber on the walls and roof, convective component varies from 10 to 30%; for lining completely consisting of ceramic fibers it is 10 - 25%. When using fireclay brick lining parts their inner temperature is higher than for ceramic fiber up to 50 °C. Conclusions: Significant furnace lining materials type influence on metal AC intensity is proved. Heat removal mechanism on metal AC in furnace is disclosed, by establishing heat proportion directly removed from metal by convection. It is found that radiant heat transfer between metal and fireclay brick part of lining goes less intensively than with ceramic fiber part. 

Open Access

Article

Article ID: 561

Study on Material of Polymer-based Electromagnetic Shielding Composites

by Hanwen Zhang, Zhendong Qiu, Huiping Wang

Materials Physics and Chemistry, Vol.1, No.1, 2019; 710 Views, 11 PDF Downloads

With the extensive application of electromagnetic resources in the information industry, electromagnetic interference has caused many hazards. Polymer-based electromagnetic shielding composite material as a new type of material has good shielding effect on the electromagnetic wave. This paper mainly introduces the types of polymer-based electro-magnetic shielding composite materials and the performance evaluation method of shielding materials.

Open Access

Article

Article ID: 563

Synthesis and Application of Carbon Matrix Composites

by Jianqing Qi, Weiping Tao, Yong Wang, Guanwu Xue

Materials Physics and Chemistry, Vol.1, No.1, 2019; 718 Views, 10 PDF Downloads

This paper describes the development of carbon-based composites, and the synthesis and application of four carbon- based composites of graphene, carbon nanotubes, fullerenes and graphite.