Mohamad Mahdi Zerafat

[ 1 ] - Fabrication and Charge Modification of Ceramic Membranes Using Copper Nanoparticles for Desalination

Ceramic membranes are considered as alternatives for their polymeric counterparts due to highmechanical strength and thermal resistance; thus long lifetime. Usually, asymmetric ceramicmembranes are synthesized including several layers with different pore size distributionswith the top-layer playing the main separation role. Titania has several properties such asphotocatalytic activity and chemi...

[ 2 ] - Investigation of Heat Transfer Coefficient Enhancement for CuO/TiO2 Nanocomposite in a Tube Heat Exchanger

In order to improve the efficiency and rate of heat transfer in heat exchangers, various techniques such as increasing the heat transfer coefficient are proposed. This study is devoted to the investigation of heat transfer coefficient variations due to the addition of CuO, TiO2 and CuO/TiO2 nanoparticles into a shell and tube heat exchanger. CuO/TiO2 nanocomposite was synthesized using mechanic...

[ 3 ] - Response surface methodology for optimization of Phenol photo-catalytic degradation using Carbon-doped TiO2 nano-photocatalyst

In this research, Carbon-doped TiO2 nano-photocatalyst is synthesized via sol-gel technique and photo-catalytic degradation of phenol has been studied under ultraviolet and visible light irradiation in a fluidized bed reactor. Various techniques are used to characterize TiO2 nano-photocatalyst such as X-Ray Diffraction, Fourier transform infrared spectroscopy, Energy Disp...

[ 4 ] - تجزیه فتوکاتالیستی فنول با استفاده از نانوکامپوزیت C-TiO2

فنول از جمله آلاینده های خطرناک با تجزیه پذیری دشوار است که حذف کامل آن با روش های معمول امکان پذیر نمی باشد. در این پژوهش، نانوفتوکاتالیست تیتانیای آلایش یافته با کربن با روش سل ـ ژل تولید شد. آنالیزهای گوناگونی از جمله XRD، FT-IR، EDX وFE-SEM بر روی نانوذره های مورد نظر انجام شدکه بر اساس نتیجه های به دست آمده، ورو...

[ 5 ] - Response surface methodology for optimization of Phenol photo-catalytic degradation using Carbon-doped TiO2 nano-photocatalyst

In this research, Carbon-doped TiO2 nano-photocatalyst is synthesized via sol-gel technique and photo-catalytic degradation of phenol has been studied under ultraviolet and visible light irradiation in a fluidized bed reactor. Various techniques are used to characterize TiO2 nano-photocatalyst such as X-Ray Diffraction, Fourier transform infrared spectroscopy, Energy Disp...

[ 6 ] - Application of ZnO/TiO2 Nanocomposite for the Improvement of Heat Transfer Coefficient in Tube Heat Exchangers

The potential of nanofluids for the improvement of heat transfer coefficient in various heat exchangeequipment has been considered and studied as a major application during recent decades. In this research,heat transfer coefficient of ZnO, TiO2 and ZnO/TiO2 nanoﬂuids in a shell and tube heat exchanger has beenstudied experimentally. ZnO nanoparticle was synthesized through pre...

[ 7 ] - Experimental investigation on the thermal conductivity of Triethylene Glycol-Water-CuO nanofluids as a desiccant for dehydration process

Liquid desiccants such as glycols are used in dehydration process, among which Triethylene Glycol (TEG) is considered as a common choice. The addition of nanoparticles to TEG as the base fluid is one of the prevalent method to improve thermal properties of TEG. In this study, an experimental investigation was performed on thermal conductivity of TEG-based nanofluids with 20 and 40 nm diameter c...

[ 8 ] - Effect of Solvent properties on Crystallinity and Morphology of Octavinyl-POSS: A Comparative Study

Polyhedral Oligomeric Silsesquioxanes (POSSs) are a class of hybrid structures synthesized through hydrolytic condensation (Sol-Gel method) of trifunctional silane monomers under specific conditions. Octavinyl silsesquioxane (OVS) nanostructures are comprised of a rigid inorganic silica core surrounded by vinyl functional groups with an under-developed synthesis procedure. Generally, POSS morph...