Article
Engineering, Electrical & Electronic
Yongcai Hu, Zhaofu Du, Yingbang Yao, Yue Ma, Yi Li, Yiwen Xu, Xiaobo Zhao, Tao Tao, Bo Liang, Shengguo Lu
Summary: Silver powders were prepared using a chemical reduction method, with different surfactants examined for their effects. The best performance was observed with PVP and Span-85 surfactants, while the thixotropic agent of hydrogenated castor oil showed the largest thixotropic index. By using different organic additives, significant improvements in microstructural, rheological, and electrical properties of the silver paste can be achieved for LTCC applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Biochemistry & Molecular Biology
Ji Kang, Hongxia Yue, Xinxue Li, Chao He, Qin Li, Liting Cheng, Jixiang Zhang, Yan Liu, Shujun Wang, Qingbin Guo
Summary: Ultrasound was used to reduce the viscosity of xanthan gum, and its effect on the physicochemical and rheological properties of xanthan gum was investigated. The low molecular weight xanthan gum achieved through ultrasound treatment improved the quality of frozen dough bread.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Gui Bing Hong, Yi Hua Luo, Kai Jen Chuang, Hsiu Yueh Cheng, Kai Chau Chang, Chih Ming Ma
Summary: In this study, silver nanoparticles were successfully prepared using a chemical reduction synthesis method, followed by low-temperature sintering to obtain Ag-conductive ink for flexible substrate application. The size and shape of the AgNPs were well controlled by varying reaction parameters, and the electrical resistivity of the ink was optimized under specific sintering conditions. These findings may have implications for future research on other metals as well.
Article
Chemistry, Applied
Amanda M. Alves, Shirley N. Cavalcanti, Moacy P. da Silva, Daniel M. G. Freitas, Pankaj Agrawal, Tomas J. A. de Melo
Summary: This study evaluated the electrical conductivity, rheological, and mechanical properties of copolymer/carbon black conductive polymer composites. PEgMA/CB showed the highest conductivity, while BioPE/CB exhibited the best electrical performance. CB acted as a reinforcing filler, increasing the elastic modulus and tensile strength of BioPE and the copolymers.
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
(2021)
Article
Materials Science, Paper & Wood
Donatella Duraccio, Rossella Arrigo, Valentina Strongone, Pier Paolo Capra, Giulio Malucelli
Summary: The research focused on preparing UHMWPE/CNC composites and revealed that CNC can improve the mechanical properties and crystallinity of the composites. Additionally, different preparation methods play a key role in determining the performance of the composites.
Article
Chemistry, Physical
Edita Palaimiene, Jan Macutkevic, Juras Banys, Algirdas Selskis, Natalia Apanasevich, Alexander Kudlash, Aliaksei Sokal, Konstantin Lapko
Summary: The dielectric properties of phosphate ceramics with different sizes of silver nanoparticles were studied. The critical concentration is around 30 wt.% and it is higher for bigger-sized nanoparticles. These ceramics with silver nanoparticles are suitable for microwave shielding applications.
Article
Materials Science, Multidisciplinary
Wei Liu, Yuehui Hu, Yichuan Chen, Zhiqiang Hu, Ke Zhou, Zhijian Min, Huiwen Liu, Lilin Zhan, Yinjie Dai
Summary: This study proposed a method of modifying silver nanowire transparent conductive films with metal oxide nanoparticles, and conducted experiments with different metal oxides. The modification significantly reduced resistance and improved electrical performance and temperature distribution uniformity.
Article
Chemistry, Physical
Marcus Vinicius Gomes Paixao, Rafael da Silva Fernandes, Elessandre Alves de Souza, Rosangela de Carvalho Balaban
Summary: This study investigated the impact of nanoparticles on increasing thermal energy storage to minimize cooling effects on drilling fluid rheological properties, aiming to address issues in deepwater oil and gas drilling. By developing hybrid nanoparticles assembly and characterizing the synthesized materials, it was demonstrated that the nanoparticles provided efficient rheological control for designing water-based drilling fluids for low temperature environments.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
N. A. Bulychev
Summary: In this study, hydrogen and silver nanoparticles were obtained through intense ultrasonic cavitation and plasma discharge in liquid hydrocarbons. The method effectively decomposed complex hydrocarbon molecules and synthesized nanoparticles with activated surfaces, exhibiting high reactivity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Biochemistry & Molecular Biology
Marina Alloisio, Andrea Dodero, Stefano Alberti, Silvia Vicini, Maila Castellano
Summary: Polysaccharide-based composites embedding silver nanoparticles show promising antimicrobial properties due to the combination of effective biocidal properties of the silver nanoparticles and the biocompatibility and environmental safety of the naturally occurring polymeric component. The silver nanoparticles stabilized with alginate chains were successfully synthesized in situ and electrospun into nanocomposite membranes for potential antimicrobial applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Environmental
M. Ruiz-Hernando, S. Vinardell, J. Labanda, J. Llorens
Summary: The study showed that ultrasound treatment can improve the rheological and dewatering properties of waste activated sludge, but the implementation cost is high and has a significant impact on economic balance. Techno-economic analysis revealed that increasing electricity revenue and reducing biosolids disposal costs are crucial factors to make ultrasound treatment economically attractive.
Article
Chemistry, Inorganic & Nuclear
Milan Babu Poudel, Allison A. Kim
Summary: Silver nanoparticles (Ag NPs) decorated Titanium dioxide nanoflakes (TiO2 NFs) were synthesized via sol-vothermal followed by photoreduction method. The synthesized TiO2 NFs and Ag@TiO2 NFs were characterized by FESEM, XRD, and FTIR spectroscopy. The antibacterial activity of Ag@TiO2 NFs against Staphylococcus aureus and Escherichia coli was investigated, and the results showed that Ag@TiO2 NFs exhibited potential antibacterial effects compared to TiO2 NFs only. Among the various samples, Ag (2 wt%) @TiO2 NFs showed the highest effectiveness.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Nikola Gligorijevic, Tatjana Mihajlov-Krstev, Milena Kostic, Ljubisa Nikolic, Nemanja Stankovic, Vesna Nikolic, Ana Dinic, Marko Igic, Nirit Bernstein
Summary: The aim of this study was to modify denture base resins with silver nanoparticles and silver chloride to inhibit the growth of Candida albicans and Staphylococcus aureus. The modified resins showed improved antimicrobial effects. This study is significant for the prevention and treatment of oral infections in elderly patients.
Review
Biotechnology & Applied Microbiology
Leyla Danai, Lewis A. Rolband, Valentina Abondano Perdomo, Elizabeth Skelly, Taejin Kim, Kirill A. Afonin
Summary: Silver nanoparticles (AgNPs) and silver nanoclusters (AgNCs) are both promising nanomaterials for biomedical applications. AgNPs are versatile drug-delivery carriers, imaging probes, and antibacterial agents, while AgNCs exhibit fluorescence and antibacterial activity due to their molecule-like electron configurations. The template-assisted synthesis of AgNCs using organic molecules as ligands, particularly single-stranded nucleic acids, provides fluorescent and biocompatible materials for other formulations. This mini review discusses the design, characterization, and applications of both AgNPs and DNA-templated AgNCs in antibacterial agents and biosensors.
Article
Chemistry, Multidisciplinary
Binxiao Fu, Shaobo Yang, Xu Zhang, Qi Xue, Yuhuai Liu
Summary: A theoretical model for the formation mechanism of a surface silver nanonetwork (NNW) on a conductive template was constructed, and the influences of illuminated light, ambient humidity, template crystal polarity, and doping condition on the Ag NNW formation rate were analyzed. The effects of a morphology change of Ag NNW on optical properties were investigated using the finite element method (FEM) and the sheet resistance of the proposed structure was calculated to find the optimized structure with high transmittance in the ultraviolet (UV) and near-infrared (NIR) ranges while keeping the sheet resistance at a low level. The proposed structure is expected to provide insights for the design and fabrication of conductors with low sheet resistance and high transparency in the UV and NIR spectral ranges.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Fatemeh Asadi, Elaheh K. Goharshadi, Mohammad Sadeghinia
Article
Energy & Fuels
Roya Mehrkhah, Elaheh K. Goharshadi, Mohammad Mustafa Ghafurian, Mojtaba Mohammadi, Omid Mahian
Summary: A cost-effective, scalable, and highly efficient water-treatment material was prepared by coating an iron/nickel-reduced graphene oxide nanocomposite on poplar wood, which achieved significant reduction in salinity, pH, and electrical conductivity of seawater. The material also showed promising performance in solar steam generation and heavy metal sorption, making it a viable option for water treatment applications.
Article
Materials Science, Ceramics
Golnoosh Akhlamadi, Elaheh K. Goharshadi, Siavosh Vojdani Saghir
Summary: In this study, green cellulose nanocrystals (CNCs) were successfully extracted from waste pencil chips (PC) through a series of chemical treatments. The extracted CNCs showed improved crystallinity, chemical structure, thermal stability and morphology compared to the initial PC. Furthermore, the extracted CNCs were utilized for the production of alumina refractory bricks, resulting in bricks with higher alumina content and lower density compared to traditional sawdust-derived bricks.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Atefe Ebrahimi, Elaheh K. Goharshadi, Mojtaba Mohammadi
Summary: Coating reduced graphene oxide and silver nanoparticles on poplar wood as photoabsorbers can achieve efficient evaporation in seawater and exhibit strong antibacterial activity against methicillin-resistant Staphylococcus aureus.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Golnoosh Akhlamadi, Elaheh K. Goharshadi
Summary: A novel and cost-effective method for preparing superhydrophobic, environmentally friendly, and recyclable bio-aerogel has been developed by freeze-drying the aqueous suspension of cellulose nanocrystals (CNCs) extracted from waste tissue paper and polyvinyl alcohol (PVA) in the presence of hydrolyzed tetraethyl orthosilicate (TEOS) sol. The aerogel has high porosity, ultra-low density, superhydrophobicity, and can selectively remove oily contaminants from water.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Thermodynamics
Mohammad Mustafa Ghafurian, Mohammad Reza Malmir, Zohreh Akbari, Mohammad Vafaei, Hamid Niazmand, Elaheh K. Goharshadi, Atefe Ebrahimi, Omid Mahian
Summary: Interfacial solar steam generation (SSG) is a promising solution to address global water scarcity challenges. The porosity of the SSG device has a significant impact on the evaporation performance. In this study, a micro-scale sawdust-based substrate with adjustable porosity and a photoabsorber layer were used to achieve high-efficiency steam generation.
Article
Chemistry, Multidisciplinary
Tahereh Mahvelati-Shamsabadi, Elaheh K. Goharshadi, Gholamhossein Zohuri, Reza Erfani Ghorbani, Pedram Hosseinpour
Summary: Transparent omniphobic coatings with stable repellency and high transparency were fabricated using colloidal dispersions as sacrificial templates.
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Kimiya Goharshadi, Seyed Abdolkarim Sajjadi, Elaheh K. Goharshadi, Roya Mehrkhah
Summary: In this study, a hierarchical porous wood coated with Ag and Pd plasmonic nanoparticles (NPs) was used as efficient photoabsorbers in interfacial solar steam generation (ISSG) of seawater. The results indicated that the surface plasmon resonance effect of Ag and Pd NPs enhances the photothermal conversion efficiency and achieves high evaporation flux. Furthermore, the device shows a capability of reducing seawater salinity, electrical conductivity, and pH, while maintaining stable water generation performance.
MATERIALS RESEARCH BULLETIN
(2022)
Review
Polymer Science
Azam Jamsaz, Elaheh K. K. Goharshadi
Summary: Polyurethane foams (PUFs) are widely used but highly flammable, and the development of PUFs with fire-retardant properties is crucial. Graphene-based nanomaterials (GNs) improve the thermal stability of PUFs and delay ignition. However, the sheet structure of GNs affects their dispersion and compatibility, which can be addressed through modification.
Article
Materials Science, Multidisciplinary
Fatemeh Farsinia, Elaheh K. Goharshadi, Navid Ramezanian, Masoomeh Mehraban Sangatash, Marjan Moghayedi
Summary: The use of Ag-RGO as an antibacterial agent in water-based acrylic paints was investigated. The nanocomposite showed strong antibacterial activity against E. coli and S. aureus. Increasing the concentration of Ag-RGO in the paint enhanced the inhibition efficiency. Microscopy images revealed that the bacteria's lengths decreased and degraded after 24 h of exposure to the antibacterial paint. The antibacterial activity of Ag-RGO against S. aureus was higher than that against E. coli.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Masoomeh Shafaee, Zohreh Niazi, Moeid Asarnia, Elaheh K. Goharshadi, Reyhaneh Dehghani
Summary: The production of drinking water using interfacial solar steam generation (ISSG) is an efficient technology that tackles environmental issues and high costs of industrial desalination methods. This study developed a photoabsorber, named K-PC, for ISSG of seawater and wastewater treatment, utilizing manganese dioxide nanoparticles deposited on a pine cone. The K-PC achieved a high evaporation flux and conversion efficiency, and demonstrated stability for ISSG during multiple cycles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Majid Namayandeh Jorabchi, Mohsen Abbaspour, Elaheh K. Goharshadi, Iman Salahshoori, Sebastian Wohlrab
Summary: In this study, the aggregation and possible coalescence of a pair of core-shell Pt@Au nanoalloy particles were simulated in different solvents. The results showed that the tendency for aggregation is greater in water and benzene + water systems, weaker in IL, ethanol, and benzene, and there is a very small change in the structure of the nanoalloys in different solvents. The study also examined the effects of nanocluster shape and core by simulating truncated octahedral (Au)374 and pure icosahedral (Au)309 nanoclusters in water.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Masoomeh Shafaee, Elaheh K. Goharshadi, Mohammad Mustafa Ghafurian, Mojtaba Mohammadi, Hassan Behnejad
Summary: Producing freshwater from seawater and wastewater is important, and a three-dimensional carbonized pine cone (CPC1) was fabricated as a low-cost and efficient photoabsorber for this purpose. CPC1 exhibited high conversion efficiency and evaporation flux due to its large solar-light-harvesting ability, porosity, rapid water transportation, water/air interface, and low thermal conductivity. It also showed good stability and the ability to purify seawater and wastewater through the removal of organic dyes and reduction of polluting ions.
Review
Chemistry, Physical
Zohreh Niazi, Anders Hagfeldt, Elaheh K. Goharshadi
Summary: Graphene-based nanomaterials (GBNs) have been incorporated in various components of perovskite solar cells (PSCs) to address the challenges of stability, scalability, and flexibility. These materials, with their excellent optical, electronic, photonic, thermal, and mechanical properties, have shown promise in improving the efficiency, reproducibility, and stability of PSCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Biochemistry & Molecular Biology
Zohreh Niazi, Elaheh K. Goharshadi, Mansour Mashreghi, Majid Namayandeh Jorabchi
Summary: The TiO2/GQDs nanocomposite showed better photocatalytic activity in degrading RB5 under sunlight irradiation compared to pure TiO2 NPs due to its lower band gap and electron/hole recombination rate.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2021)
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.
