Article
Multidisciplinary Sciences
Elzbieta Chwojnowska, Justyna Grzonka, Iwona Justyniak, Tomasz Ratajczyk, Janusz Lewin
Summary: Introduces a novel organometallic approach to synthesize polymer-coated ZnO nanocrystals, which allows precise control over the polymer/nanocrystal microstructure. The one-pot procedure combines the ring-opening polymerization of E-caprolactone mediated by an organozinc alkoxide initiator and an air-promoted transformation, resulting in quantum-sized ZnO crystals with a core diameter of ca 3 nm coated by poly(E-caprolactone). This method provides the ability to create well-defined hybrid composites for various nanosystems.
Article
Chemistry, Physical
Roberta Crapanzano, Irene Villa, Silvia Mostoni, Massimiliano D'Arienzo, Barbara Di Credico, Mauro Fasoli, Roberto Lorenzi, Roberto Scotti, Anna Vedda
Summary: The development of hybrid nanoscintillators allows for the implementation of advanced detection technologies and radiation therapies. By engineering the physico-chemical properties of nanoparticles, increased functionality and performance can be achieved. However, optimizing the properties of nanoparticles in combination with ionizing radiation requires a comprehensive understanding of their structure, composition, physicochemical features, and scintillation properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Spectroscopy
Narsingh R. Nirala, Giorgi Shtenberg
Summary: The study introduces a sensitive differentiation assay of BM severity based on enhanced fluorescence emission of a conventional NAGase activity assay. By adding silica-coated zinc oxide nanoparticles, non-radiative energy transfer to the lysosomal reaction products is induced, leading to enhanced fluorescence emission (more than 3-fold). The modified fluorescence assay evaluated various milk qualities within the entire inflammatory spectrum in comparison to non-infected milk, and the amplified emission values differentiate between two main BM causative pathogens at various somatic cell counts.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Review
Biochemistry & Molecular Biology
Manuela Daniela Preda, Maria Leila Popa, Ionela Andreea Neacsu, Alexandru Mihai Grumezescu, Octav Ginghina
Summary: There is an increasing interest in developing protective textiles and clothes to protect wearers from various risks. Electrospun fibers and membranes have shown great potential in developing protective materials and garments, providing thermal comfort and protection against environmental threats.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Physics, Multidisciplinary
Anamika Kem, Mohd Rehan Ansari, P. Prathap, M. Jayasimhadri, Koteswara Rao Peta
Summary: Eco-friendly stable ZnO nanoparticles were successfully synthesized using citrus limon as a chelating agent. The structural and optical properties of the nanoparticles were studied at different annealing temperatures. The results showed that the particle size increased due to agglomeration or Ostwald ripening at high temperature, and the crystallite size and bandgap also increased slightly. The emission peaks of the nanoparticles were analyzed and attributed to the near band edge emission and the transition of electrons from traps to the valence band.
Article
Pharmacology & Pharmacy
Florin Matusoiu, Adina Negrea, Nicoleta Sorina Nemes, Catalin Ianasi, Mihaela Ciopec, Petru Negrea, Narcis Duteanu, Paula Ianasi, Daniel Duda-Seiman, Delia Muntean
Summary: The antibacterial activity of zinc oxide particles has attracted significant attention worldwide. This study synthesized silica-based iron oxide matrix composites with different amounts of zinc oxide and evaluated their antimicrobial efficacy against various pathogens. The results showed that adding zinc oxide to the system increased the average porosity size of the material and enhanced its antibacterial properties.
Article
Biophysics
Zhenyu Cheng, Haiyan Song, Xianfa Zhang, Xiaoli Cheng, Yingming Xu, Hui Zhao, Shan Gao, Lihua Huo
Summary: A unique near-spherical ZnO nanostructure was successfully synthesized using a mixed solvent of polyethylene glycol-400 (PEG-400) and water. The resulting ZnO nanostructure exhibited high uniformity, better dispersion, and small particle size. The modified electrode based on this nanostructure showed excellent nitrite sensing performance, with different results obtained from Chronoamperometry and Linear Sweep Voltammetry techniques.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Chemistry, Physical
Martina Vrankic, Ankica Saric, Takeshi Nakagawa, Yang Ding, Ines Despotovic, Lidija Kanizaj, Hirofumi Ishii, Nozomu Hiraoka, Goran Drazic, Dirk Lutzenkirchen-Hecht, Robert Peter, Mladen Petravic
Summary: This study provides a detailed description of the mechanism involved in the formation of finely-tuned spherical ZnO nanoparticles, and investigates factors affecting the structural motifs and photocatalytic activity of ZnO particles. Results show that the spherical ZnO particles exhibit excellent photocatalytic activity compared to tubular ZnO particles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Fatima Marino, Enriqueta R. Lopez, Angela Arnosa, Manuel A. Gonzalez Gomez, Yolanda Pineiro, Jose Rivas, Carmen Alvarez-Lorenzo, Josefa Fernandez
Summary: In this study, oleic acid coated zinc oxide nanoparticles were successfully synthesized and characterized for their thermal and tribological properties. The concentration of nanoparticles affected the density and viscosity, with the optimal concentration at 0.25 wt% showing the best tribological performance. The spherical shape of the nanoparticles and the mending effect were identified as the main factors contributing to the superior performance of the nanolubricant compared to the base oil.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Multidisciplinary
R. Siddheswaran, C. Esther Jeyanthi, K. Thangaraju, R. Mangalaraja
Summary: The present investigation explores the columnar structured growth of Mn doped ZnO (MZO) thin films using the radio frequency sputtering technique. Various characterization techniques, such as X-ray diffraction, scanning electron microscopy, and transmission electron microscopy, were employed to confirm the structure, composition, and growth direction of the MZO films.
MATERIALS TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Samuel Adesoye, Saqer Al Abdullah, Anjali Kumari, Gayani Pathiraja, Kyle Nowlin, Kristen Dellinger
Summary: This study proposes a novel method for biomolecular detection using surface-enhanced Raman scattering (SERS) technique to address the limitations of current detection methods. By coating gold (Au) precursor onto zinc oxide (ZnO), the signal enhancement is significantly improved and applied for molecular identification of exosomes.
Article
Chemistry, Physical
Sergey Stolyar, Roman N. Yaroslavtsev, Anna Tyumentseva, Sergey Komogortsev, Ekaterina S. Tyutrina, Alina T. Saitova, Yulia Gerasimova, Dmitriy A. Velikanov, Michael Rautskii, Rauf S. Iskhakov
Summary: Iron oxide nanoparticles were synthesized through coprecipitation method and the effects of different Fe3O4/tetraethoxysilane ratios on their properties were investigated. The results showed that the magnetite core in nanoparticles had higher magnetization compared to stoichiometric magnetite nanoparticles, which was caused by the interaction with the silicate coating. Additionally, the thickness of the nanoparticle shell was found to be related to the efficiency of DNA isolation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Patrick E. J. Saloga, Tina Rybak, Andreas F. Thuenemann
Summary: In this study, a simple one-pot procedure was reported to obtain aqueous zinc oxide (ZnO) nanoparticle dispersions from ZnO nanoparticles dispersed in cyclohexane. Polysorbate 80 (Tween 80) was used as a phase transfer agent and colloidal stabilizer. The particle sizes could be controlled by adjusting the incubation time of the dispersion.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Multidisciplinary Sciences
A. Ismail, M. J. Abdullah, M. A. Qaeed, Mohammed A. Khamis, Bandar Ali AL-Asbahi, Saif M. Qaid, W. A. Farooq
Summary: The study fabricated p-type ZnO thin films using co-doping technique and identified ideal RF power values for obtaining p-type ZnO. Structural, optical and electrical properties of the prepared films were inspected using XRD, PL spectra, and Hall measurements.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2021)
Article
Optics
Mohd Hafiz Jali, Hazli Rafis Abdul Rahim, Md Ashadi Md Johari, U. U. M. Ali, Siti Halma Johari, Habibah Mohamed, Sulaiman Wadi Harun, M. Yasin
Summary: An enhanced formaldehyde sensor using a microsphere resonator and zinc oxide nanorods coated glass was developed, showing improved sensitivity and resolution compared to traditional methods. The sensor combines high energy density behavior of the microsphere resonator with robust chemisorption on the ZnO nanorods surface, providing excellent results for formaldehyde sensing applications.
OPTICS AND LASER TECHNOLOGY
(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.