Article
Chemistry, Physical
Saeedeh Movaghar Khoshkho, Bahareh Tanhaei, Ali Ayati, Majid Kazemi
Summary: In this study, CRG hydrogel beads were impregnated with surfactants to enhance their adsorption behavior towards methylene blue. The CRG-TTX hydrogels showed higher crystal structure and thermal resistance compared to CRG-SDBS. The concentration of surfactants significantly affected adsorption performance, with the best concentration found to be half of the critical micellar concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Kai Wu, Yi Zhang, Fang Ge, Xin Huang, Hong-Hua Ge, Yu-Zeng Zhao, Xin-Jing Meng, Bin-Lin Dou
Summary: This study investigated the corrosion behavior of brass in various cooling water conditions and TiO2 nanofluid, finding that the presence of SDBS as a dispersing agent led to the formation of a protective adsorption film on the brass surface in SCW-SDBS medium, reducing corrosion rate. However, the competitive adsorption of TiO2 nanoparticles and SDBS anions in SCW-SDBS-TiO2 nanofluid hindered the formation of the protective SDBS adsorption film on the brass surface, leading to reduced corrosion inhibition performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Physics, Multidisciplinary
Maria del Alba Pacheco-Blas, Cesar Soto-Figueroa, Maria del Rosario Rodriguez-Hidalgo, Luis Vicente
Summary: Molecular Dynamics simulations were conducted on Triton X-100, a nonionic surfactant, to investigate its physical properties under the influence of temperature and the addition of salt (NaCl, LiCl). The shape and size of the micelles change with increasing temperature, showing a prolate ellipsoid of revolution due to the folding of polyoxyethylene chains. The hydrodynamic radius of the micelles increases progressively with higher salt concentration. The addition of electrolyte modifies the hydration shell around PEO chains, leading to chain collapse and a decrease in the cloud point, with a greater effect observed for NaCl.
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
(2023)
Article
Engineering, Biomedical
Van Quy Hoang, Trung Hieu Vu, Hai Truyen Dang, Moon Il Kim, Chung Wung Bark
Summary: In this study, different treatments were applied to the HA/TiO2 composite to enhance its wetting ability, biocompatibility, and mitigate nanotoxicity concerns. The addition of SDBS and high-temperature annealing improved the distribution of TiO2 nanoparticles on the HA surface, resulting in better cell viabilities and cell adhesion behavior. The modified HA/TiO2 composite showed great potential for bioapplications by exhibiting lower cytotoxicity and maintaining cell morphology.
BIOMEDICAL MATERIALS
(2021)
Article
Engineering, Environmental
Kaibo Huang, He Liu, Jinglei He, Yongyi He, Xueqin Tao, Hua Yin, Zhi Dang, Guining Lu
Summary: This study used Ag/TiO2 for photocatalytic degradation of PBDEs in washing wastes, aiming to reuse TX-100 surfactant. The results showed that BDE-47 degradation can be achieved effectively under specific conditions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Vamshi Krishna Poloju, Vidyasri Khadanga, Sayantan Mukherjee, Purna Chandra Mishra, Nawaf F. Aljuwayhel, Naser Ali
Summary: This research investigates the effects of surfactant concentration, ageing, and sonication period on the thermal conductivity of ternary nanofluid. The results show that increasing surfactant concentration and sonication duration enhance the thermal conductivity of the nanofluid. Older nanofluids exhibit higher thermal conductivity.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Huseyin Elcicek, Mahmut Erol, Oguz Kaan Ozdemir
Summary: The study focused on developing highly active and cost-effective catalysts for the hydrolysis of sodium borohydride (NaBH4) for fuel cell applications. It was found that the addition of Triton during the synthesis of NiB catalysts significantly improved their catalytic performance, with the highest hydrogen generation rate achieved with 25 mu L Triton addition. Additionally, the kinetic performance of NaBH4 hydrolysis and the power density analysis in fuel cells showed that Triton had a significant impact on the catalytic activity of NiB catalysts.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Environmental Sciences
Eun Hea Jho, Seong Ho Yun, Punam Thapa, Joo-Won Nam
Summary: The study investigates the changes in toxic effects of surfactants during photodegradation, showing that the generation of photoproducts from Triton X-100 may lead to higher toxic effects. D. magna and A. fischeri exhibit different sensitivities to Triton X-100 and its photodegraded products, suggesting that photodegradation can alter the relative toxic effects on different aquatic organisms.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Food Science & Technology
Sora Shin, Eun Hea Jho, Han Sol Park
Summary: The study found that surfactants can potentially affect crop growth and absorption of other contaminants, highlighting the importance of properly managing residual surfactants and active ingredients in pesticide formulations.
APPLIED BIOLOGICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Wataru Murakami, Antonio De Nicola, Yutaka Oya, Jun-Ichi Takimoto, Massimo Celino, Toshihiro Kawakatsu, Giuseppe Milano
Summary: This study presents a combined theoretical and computational approach to investigate the shape transition mechanism of Triton X-100 (TX-100) micellar nanoscale aggregates in aqueous solution. By analyzing micellar structural data derived from simulations, the authors propose a theoretical model to predict the shape transition and stability ranges of spherical and nonspherical nanoscale aggregates. The results reveal the energetic stability of spherical aggregates in a small range of conditions, and also identify coexisting shapes and wider stability ranges for larger conditions.
ACS APPLIED NANO MATERIALS
(2021)
Article
Thermodynamics
Yogesh Fulpagare, Dong-Yuan Tsai, Chi-Chuan Wang
Summary: In this research, thermal resistance of a modified inflated aluminium plate with a closed thermosiphon under natural convection was tested, finding that a 70% filling ratio offers the best heat transfer performance. As the power increases, the thermal resistance decreases, and uniform heat source performs better than non-uniform heat source.
APPLIED THERMAL ENGINEERING
(2022)
Article
Chemistry, Physical
Ankur Patel, Debes Ray, Mehul Khimani, Jigisha K. Parikh, Paresh Parekh, Vijay Patel, Vinod K. Aswal, Pratap Bahadur
Summary: This study investigated the behavior of a non-ionic surfactant in the presence of a hydrophobic diol, leading to changes in cloud point, viscosity, and micelle morphology. Salt and temperature effects were found to play a role in controlling micellar transitions. The structural transitions were attributed to the hydrophobic interactions between the surfactant and diol.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biochemistry & Molecular Biology
Ajamaluddin Malik, Abdullah Alhomida, Javed Masood Khan
Summary: This study investigated the influence of a negatively charged benzene ring containing surfactant, sodium dodecylbenzene sulphonate (SDBS), on the fibrillation of bovine liver catalase (BLC). It was found that lower concentrations of SDBS promoted the native-like alpha-helical structure of BLC, while higher concentrations led to aggregation and the formation of amyloid-like structures. At pH 2.0, higher concentrations of SDBS enabled BLC to regain its native-like alpha-helical structure.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Qi Liu, Jingkang Wang, Hao Wu, Shuyi Zong, Na Wang, Ting Wang, Lina Zhou, Xin Huang, Hongxun Hao
Summary: Pseudo-ternary phase diagrams of water/Triton X-100/1-pentanol/cyclohexane microemulsions were determined by measuring electrical conductivity. The structure and properties of the microemulsions were analyzed using various techniques, and the phase transitions and nanostructure sizes were discussed. The type of water in W/O microemulsion was specifically analyzed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Zhiqing Wu, Fan Yang, Xiaomin Li, Anthony Carroll, Wendy Loa-Kum-Cheung, Heather M. Shewan, Jason R. Stokes, Dongyuan Zhao, Qin Li
Summary: This study investigates the role of surfactants in controlling the morphology of silica nanoparticles in microemulsion-mediated synthesis. It is found that adjusting the concentration of surfactant can lead to a transition from solid to hollow nanoparticles, and adding a co-surfactant can also tune the shell thickness of the hollow particles. This research demonstrates how the microemulsion phase structure can be utilized to manipulate the morphology of nanoparticles.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Thermodynamics
Erdem Ciftci, Adnan Sozen
Summary: By adding nanoparticles to the base fluid, the thermal characteristics of the fluid were significantly increased. Experimental results showed that the heat transfer coefficient of h-BN/DCM nanofluid increased by 27.59%, 14.44%, and 15% for saturation boiling, after-saturation boiling, and condensation processes, respectively. This study provides a novel comparison of the effects of different nanoparticles on heat transfer for boiling-condensation processes with dichloromethane (DCM) fluid.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Thermodynamics
Duygu Yilmaz Aydin, Metin Guru, Adnan Sozen, Erdem Ciftci
Summary: The experimental results demonstrate the significant improvement of heat pipe performance with nanofluids, especially with deionized water/bauxite nanofluid. The efficiency of both nanofluids showed a significant increase under specific working conditions, with at least a 20% decrease in thermal resistance of the heat pipe when nanofluids were used as working fluid.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
(2021)
Article
Energy & Fuels
Duygu Yilmaz Aydin, Erdem Ciftci, Metin Guru, Adnan Sozen
Summary: This study investigated the heat transfer properties of a thermosyphon heat pipe filled with bauxite nanofluid, finding that using a 2% concentration of bauxite nanofluid and an anionic surfactant can significantly increase the heat pipe efficiency and thermal resistance. The experimental data showed an increase in efficiency of up to 20.9% and a maximum enhancement in thermal resistance of 24.3% with the use of bauxite nanofluid.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Thermodynamics
Erdem Ciftci
Summary: The preparation and utilization of hybrid nanofluids in thermal systems have gained popularity for their improved thermophysical properties. Compared to unary nanofluids, hybrid nanofluids enhance heat transfer performance by removing the disadvantages of individual components. Experimental results demonstrate that the hybrid utilization of nanoparticles significantly improves heat pipe characteristics, with a maximum decrease of 40.79% in thermal resistance.
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2021)
Article
Engineering, Chemical
Rand Ahmed Adeeb Babat, Kerim Martin, Erdem Ciftci, Adnan Sozen
Summary: In this study, nanofluids with iron aluminate spinel nanoparticles were prepared and tested in heat pipes of an air-to-air heat exchanger. The results showed that the utilization of magnetic nanofluid significantly improved the efficiency and reduced the thermal resistance of the heat pipes. The effect of nanoparticle concentration on performance was also discussed.
CHEMICAL ENGINEERING COMMUNICATIONS
(2023)
Article
Energy & Fuels
Faraz Afshari, Azim Dogus Tuncer, Adnan Sozen, Erdem Ciftci, Ataollah Khanlari
Summary: The study focused on designing and testing compact type solar dryers, with the ones featuring baffles showing better performance. Specific moisture extraction rates and exergy efficiency were higher in dryers with baffles compared to those without baffles. Overall, the study demonstrated the successful development of a compact solar dryer using simple and lightweight materials.
Article
Green & Sustainable Science & Technology
Erdem Ciftci, Ataollah Khanlari, Adnan Sozen, Ipek Aytac, Azim Dogus Tuncer
Summary: A vertical hybrid PVT solar dryer was developed and analyzed in this study, with the use of fins to enhance heat transfer. Experimental results showed that the application of fins significantly improved drying performance.
Article
Green & Sustainable Science & Technology
Ataollah Khanlari, Azim Dogus Tuncer, Adnan Sozen, Ipek Aytac, Erdem Ciftci, Halil Ibrahim Variyenli
Summary: This work analyzes the effect of applying nano-enhanced absorber coating on the performance of an unglazed vertical solar air heating system. The study includes numerical analysis and experimental testing of different configurations of vertical solar air heaters. The results show that applying nano-embedded coating improves the thermal efficiency and exergy efficiency of the system. This research highlights the significance of nano-enhanced absorber coating in optimizing the performance and energy-saving of solar heating systems.
Article
Engineering, Multidisciplinary
Adnan Sozen, Tayfun Menlik, Erdem Ciftci, Amjad Anvari-Moghaddam
Summary: This study aims to increase the Primary Resource Factor values of the provinces in Turkey by developing alternative and hybrid solution proposals, leading to an increase in the use of renewable energy resources. The evaluations of each renewable energy source using data envelopment analysis and TOPSIS method provide solution proposals for each province. The relationship between on-site solutions for district heating/cooling problems and renewable energy sources is analyzed in the context of rising energy prices.
JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI
(2022)
Article
Engineering, Multidisciplinary
Fatma Kadriye Duden Orgen, Ayca Altintas, Sezai Yasar, Murat Ozturk, Erdem Ciftci, Azim Dogus Tuncer
Summary: In this research, the wind energy potential of a specific region in Western Turkey was analyzed using WindPRO software. The study focused on two types of wind energy turbines with 3 MW power, and assessed the average wind speed, prevailing wind direction, estimated electrical energy generation and annual energy generation values for each location.
JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI
(2023)
Article
Thermodynamics
Azim Dogus Tuncer, Ataollah Khanlari, Faraz Afshari, Adnan Sozen, Erdem Ciftci, Baris Kusun, Istemihan Sahinkesen
Summary: A sustainable solar drying system with a modified PVT-air collector was designed and tested in this study. Numerical analysis showed improved outlet temperature for the modified collector, and experimental results demonstrated high thermal efficiency, overall exergy efficiency, and sustainability index.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Murat Ozturk, Erdem Ciftci
Summary: In this study, novel double flow solar air collectors were designed and their performance was investigated. The effect of nano-enhanced aluminum air ducts on thermal performance and sustainability indicators was examined. The experiments showed that the double flow solar air collector with flexible aluminum air ducts coated with graphene nanoplatelet-included black matte paint had the best thermal efficiency and sustainability indicators.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Thermodynamics
Azim Dogus Tuncer, Ataollah Khanlari, Ipek Aytac, Erdem Ciftci, Adnan Sozen, Halil Ibrahim Variyenli
Summary: This study successfully improved the performance of photovoltaic panels by utilizing paraffin wax-filled aluminum cans as a thermal management and efficiency improvement technique.
HEAT TRANSFER RESEARCH
(2022)
Article
Thermodynamics
Erdem Ciftci, Kerim Martin, Adnan Sozen
Summary: Aluminate spinel-based nanofluid was used in place of distilled water in the heat pipes of air-to-air heat exchanger, resulting in efficiency increments up to 85.8% and thermal resistance decrements up to 67.6%. Different binary combinations of Fe, Mg, and Zn elements showed varying impacts on heat efficiency.
HEAT TRANSFER RESEARCH
(2021)
Article
Thermodynamics
Erdem Ciftci
Summary: This study used computational fluid dynamics (CFD) approach to investigate heat transfer characteristics of two different aqueous nanofluid suspensions under saturated boiling conditions. The numerical results showed that nanoparticles doped into the distilled water decreased the beginning time of boiling and affected the bubble generation and departure characteristics.
HEAT TRANSFER RESEARCH
(2021)