Article
Chemistry, Multidisciplinary
Lijo Francis, Nidal Hilal
Summary: In this study, a CNT-modified PVDF-Co-HFP membrane was successfully fabricated for membrane distillation (MD) by electrospraying CNTs onto an electrospun membrane. The modified membrane exhibited higher water contact angle, higher liquid entry pressure, and higher tensile strength compared to the pristine membrane. Moreover, the modified membrane showed improved temperature polarization coefficient and water permeation flux in the MD process. The performance of the membrane was characterized using various methods.
Article
Biochemistry & Molecular Biology
Xingfu Zi, Hongming Wu, Jiling Song, Weidi He, Lu Xia, Jianbing Guo, Sihai Luo, Wei Yan
Summary: In this study, a two-step method was used to prepare a PVDF-HFP/cellulose/PVDF-HFP (PCP) composite membrane, which exhibited excellent properties such as high porosity, good tensile strength, and thermal stability. Compared to commercial PP separators, the PCP composite membrane showed better electrolyte uptake properties, lower interfacial resistance, higher ionic conductivity, and superior cycling and rate performance, indicating its potential as a promising separator for high-powered, secure lithium-ion batteries.
Article
Polymer Science
Adrian Vicente, Pedro J. Rivero, Jose F. Palacio, Rafael Rodriguez
Summary: Poly(vinylidene fluoride) (PVDF) is widely studied for its excellent properties in electrospun coatings. This study used electrospinning to fabricate functional PVDF fibers and evaluated the influence of experimental conditions on nanofiber properties. The results showed the important role of operational parameters in fiber structure and confirmed the morphology, transmittance, and hydrophobicity of the composite through various microscopy and surface analysis techniques.
Article
Chemistry, Physical
Zhao Sha, Cyrille Boyer, Guang Li, Yuyan Yu, Francois-Marie Allioux, Kourosh Kalantar-Zadeh, Chun-Hui Wang, Jin Zhang
Summary: A technique for introducing liquid metal Galinstan nanodroplets into electrospun PVDF-co-HFP nanofibers was proposed to enhance the triboelectric performance of TENGs, resulting in significantly improved electrical outputs. The LM modified PVDF-HFP nanofiber membranes showed the highest multifunctionality efficiency in terms of mechanical performance and electrical generation.
Article
Materials Science, Multidisciplinary
Simadri Badatya, Anil Kumar, Charu Sharma, Avanish Kumar Srivastava, Jamana Prasad Chaurasia, Manoj Kumar Gupta
Summary: A highly sensitive graphene quantum dot (GQDs) reinforced poly (vinylidene fluoride) co-hexafluoride propylene (PVDF-HFP) based flexible piezoelectric nanogenerator was reported for the first time, showing significantly higher output voltage and current compared to pristine PVDF-HFP nanogenerator. The improved performance is attributed to the alignment of electric dipoles induced by the conductive GQDs, making it suitable for self-powered sensors and nano-systems power supply.
Article
Chemistry, Applied
Yanbei Hou, Kwang Leong Choy
Summary: Developing superhydrophobic/icephobic coatings can effectively limit ice formation and solve icing issues faced in daily life and industrial production. Recent research focuses on scientific investigations rather than practical applications. The study suggests that a small inclination angle benefits the anti-icing performance of the coating.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Polymer Science
Ahmed Abutaleb, Ibrahim M. Maafa, Nasser Zouli, Ayman Yousef, M. M. El-Halwany
Summary: Metallic Co NPs@poly(vinylidene fluoride-co- hexafluoropropylene) nanofibers (PVFH NFs) were synthesized through electrospinning and in situ reduction of Co2+ ions onto PVFH membrane. Physiochemical techniques confirmed the formation of metallic Co@PVFH NFs. The formulation with 40 wt% Co showed the highest catalytic activity in dehydrogenation of sodium borohydride (SBH), producing 110 mL of H-2 in 19 min at 25 degrees C. The catalyst also exhibited outstanding stability after six cycles of hydrolysis.
Article
Polymer Science
Adriano Cimini, Alessia Borgioni, Elena Passarini, Chiara Mancini, Anacleto Proietti, Luca Buccini, Eleonora Stornelli, Emily Schifano, Simone Dinarelli, Francesco Mura, Claudia Sergi, Irene Bavasso, Barbara Cortese, Daniele Passeri, Enrico Imperi, Teresa Rinaldi, Alfredo Picano, Marco Rossi
Summary: In this study, multi-needle electrospinning was used to manufacture PVDF-HFP and PVDF-HFP@TiO2 nanofiber membranes, which were characterized and tested for their performance. The results demonstrated that PVDF-HFP@TiO2 nanofibers exhibited significant antibacterial activity and high filtration efficiency, meeting the requirements for face masks. These findings provide a realistic perspective on the production of electrospun polymer-based nanotextiles with self-sterilizing properties on a large scale.
Article
Engineering, Environmental
Xiaobo Hu, Yanqiao Xu, Jiancheng Wang, Jiaxin Ma, Lianjun Wang, Wan Jiang
Summary: CsPbX3 perovskite nanocrystals (NCs) have excellent optoelectronic properties and are considered as promising candidates for fluorescence sensors. However, their poor stability hinders their practical applications in aqueous fluorescent detection. In this study, CsPbX3 NCs were in-situ encapsulated into PVDF-HFP/PS polymer nanofibers using electrospinning, and the water stability of the nanofiber membranes was significantly improved by introducing the hydrophobic additive PFDTMS. The fabricated nanofibers exhibited outstanding optical properties, high hydrophobicity, and achieved efficient detection of organic dyes in aqueous solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Xiangyang Xue, Guangming Tan, Zhigao Zhu
Summary: Novel superhydrophobic PVDF fibrous membranes constructed via electrospinning and thermal treatment show potential applications in concentrating hypersaline brines, with improved membrane pore stability and surface hydrophobicity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Urska Gradisar Centa, Meta Sternisa, Bojana Visic, Ziga Federl, Sonja Smole Mozina, Maja Remskar
Summary: The study proposes an antimicrobial nanocomposite coating for contact surfaces, with enhanced surface properties and antimicrobial potential. The nanocomposite features a positively charged and hydrophilic surface, reducing surface roughness and increasing thermal stability. This novel coating demonstrates antimicrobial activity against bacteria and fungi, making it a promising candidate for antimicrobial coating applications.
SURFACE INNOVATIONS
(2021)
Article
Polymer Science
Ahmed Abutaleb
Summary: Non-noble CuxNi1-x (x = 0, 0.1, 0,2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1) alloy nanoparticles supported on PVDF-HFP nanofibers were successfully fabricated through electrospinning and in situ reduction. The catalysts exhibited the formation of bimetallic NiCu alloy supported on PVDF-HFP and showed better catalytic activity for SBH hydrolysis compared to monometallic counterparts. The Cu-0.7 Ni-0.3/PVDF-HFP catalyst demonstrated the best catalytic performance with low activation energy and satisfying stability.
Article
Construction & Building Technology
Yanpeng Wu, Xiaoyu Li, Qiaoyang Zhong, Faming Wang, Bin Yang
Summary: This study created a PVDF/SiO2/Ag composite nanofiber membrane with superhydrophobic and antibacterial properties using an electrospinning method. The membrane was deposited on PET fibers to create an air filter material. The results showed that the addition of nano-silver significantly improved the antibacterial performance while increasing the concentration of hydrophobic nano-SiO2 improved the hydrophobicity. The composite nanofiber membrane had a filtration efficiency of 99.94% for 0.3μm particulate matter and a drag pressure drop of 112.3 Pa, with a filtration efficiency for air microorganisms greater than 99.99%.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Chemical
Mao Guo, Jing Xiong, Xuanyang Jin, Shengjun Lu, Yufei Zhang, Jian Xu, Haosen Fan
Summary: A bicomponent PAN/PVDF-HFP Janus nanofiber based hybrid membrane was prepared using parallel electrospinning technology. A modified PAN/PVDF-HFP membrane (M-PAN/PVDF-HFP) was further fabricated by coating dopamine alternative through polymerization of catechol and TEPA. M-PAN/PVDF-HFP showed excellent pore structure, electrolyte infiltration, and mechanical strength, as well as superior ion conductivity and electrochemical stability. The M-PAN/PVDF-HFP separator exhibited outstanding rate capability and cycle stability in lithium-ion batteries.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Seungju Kim, Daniel E. Heath, Sandra E. Kentish
Summary: Electrospun PVDF-HFP nanofibre membranes exhibit excellent performance for CO2 stripping, with improved hydrophobicity and CO2 stripping flux compared to traditional membranes. The bead-on-string membranes show superior long-term CO2 stripping flux, suggesting potential for membrane distillation applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Biomedical
Petya Tsekova, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Nadya Markova, Ani Georgieva, Reneta Toshkova
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
(2018)
Article
Chemistry, Physical
Ung Thi Dieu Thuy, Irena Borisova, Olya Stoilova, Iliya Rashkov, Nguyen Quang Liem
Editorial Material
Materials Science, Multidisciplinary
Maria Spasova, Olya Stoilova, Nevena Manolova, Iliya Rashkov
Article
Biochemistry & Molecular Biology
Nikoleta Stoyanova, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Ani Georgieva, Reneta Toshkova
Article
Polymer Science
Mariya Spasova, Olya Stoilova, Nevena Manolova, Iliya Rashkov, Mladen Naydenov
Article
Polymer Science
Mariya Spasova, Nevena Manolova, Iliya Rashkov, Petya Tsekova, Ani Georgieva, Reneta Toshkova, Nadya Markova
Summary: Novel eco-friendly fibrous materials were obtained by electrospinning cellulose acetate and cellulose acetate/polyethylene glycol (CA,PEG) containing 5-chloro-8-hydroxyquinoline as a model drug. The materials exhibited good antibacterial and antifungal activities, as well as anticancer activity with low cytotoxicity towards normal cells.
Article
Polymer Science
Mariya Spasova, Nikoleta Stoyanova, Nevena Manolova, Iliya Rashkov, Sabina Taneva, Svetlana Momchilova, Ani Georgieva
Summary: Fibrous polylactide materials containing Portulaca oleracea plant extract were prepared successfully for the first time by electrospinning with supercritical carbon dioxide. The materials showed enhanced cell viability and antioxidant activity, indicating potential applications in tissue regeneration and wound healing. (c) 2021 Society of Industrial Chemistry.
POLYMER INTERNATIONAL
(2022)
Article
Polymer Science
Nasko Nachev, Mariya Spasova, Petya Tsekova, Nevena Manolova, Iliya Rashkov, Mladen Naydenov
Summary: This study prepared polymer composites with chemical fungicides to potentially control esca, a grapevine disease caused by fungal pathogens. The materials showed good antifungal activity and could inhibit the growth of the pathogens.
Article
Polymer Science
Milena Ignatova, Nasko Nachev, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Mladen Naydenov
Summary: Novel fibrous materials with antifungal properties have been developed to inhibit the growth of pathogens associated with grapevine disease, showing potential for grapevine protection.
Article
Polymer Science
Mariya Spasova, Nevena Manolova, Iliya Rashkov, Mladen Naydenov
Summary: Fungi are the main components of plant pathogens, while Trichoderma spp. are beneficial microorganisms that can control the growth of many plant pathogens. In this study, eco-friendly hybrid nanomaterials were created by embedding Trichoderma asperellum spores in a film formed on electrospun PLLA fibers. These nanomaterials showed potential for inhibiting the growth of fungal pathogens and could serve as bioactive dressings for protecting grapevines against esca disease.
Review
Biochemistry & Molecular Biology
Nasko Nachev, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Mladen Naydenov
Summary: In recent years, innovative technologies such as polymer electrospinning, electrospraying, and centrifugal electrospinning have attracted special interest in the field of fibrous materials. These electrokinetic methods allow for the creation of micro- or nanofibrous materials with high specific surface area, high porosity, and various designs for diverse applications. These techniques can be used to obtain fibrous materials from both synthetic and natural biocompatible and biodegradable polymers, which are environmentally friendly. Additionally, they enable the incorporation of low-molecular substances with biological activity and biocontrol agents. This review highlights the recent progress in the development of electrospun fungicidal dressings and their potential in modern agriculture.
Article
Polymer Science
Nikoleta Stoyanova, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Ani Georgieva, Reneta Toshkova
Summary: Innovative fibrous materials loaded with natural biologically active compounds have been successfully fabricated using blend electrospinning and dual electrospinning methods. The materials, made from cellulose acetate and water-soluble polyethylene glycol, exhibit nanometer-scale fiber diameters. The inclusion of the compounds quercetin and rutin in the fibrous mats enhances their hydrophilicity and wettability, leading to improved in vitro release. Rutin-containing mats demonstrate the highest antioxidative activity and exhibit higher cytotoxicity against cancer cells compared to non-cancer cells. These fibrous materials hold promise for pharmaceutical, cosmetic, and biomedical applications.
Article
Polymer Science
Nikoleta Stoyanova, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Mariana Kamenova-Nacheva, Plamena Staleva, Maya Tavlinova-Kirilova
Summary: In this study, the plant extract Melissa officinalis (M. officinalis) was successfully loaded into polymer fibrous materials using the electrospinning method. The incorporation of M. officinalis increased the fiber diameters and improved the hydrophilicity of the materials. The extract-containing fibrous biomaterials showed strong antioxidant activity, indicating their potential use in pharmaceutical, cosmetic, and biomedical applications.
Article
Biochemistry & Molecular Biology
Nikoleta Stoyanova, Mariya Spasova, Nevena Manolova, Iliya Rashkov, Sabina Taneva, Svetlana Momchilova, Ani Georgieva
Summary: Electrospinning was used to produce fibrous PLA materials loaded with Portulaca oleracea plant extract obtained by supercritical carbon dioxide. The fibers exhibited micron-scale diameters and good mechanical properties. The composite fibers showed considerable antioxidant activity and antimicrobial activity against both Gram-positive and Gram-negative bacteria. In vitro studies demonstrated that the electrospun biomaterials had no cytotoxic effects and promoted cell survival and proliferation, indicating their potential applications in wound healing.
Article
Engineering, Environmental
Elena Korina, Olya Stoilova, Nevena Manolova, Iliya Rashkov
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2018)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
