Article
Chemistry, Physical
Yubo Bi, Yang Zhao, Xiaoning Meng, Haiyong Cong, Wei Gao
Summary: This study successfully synthesized high-performance triethylamine gas sensors by decorating Ag+ on Fe3+ covered carbonaceous microsphere templates followed by a calcination step. The Ag-functionalized alpha-Fe2O3 nanocomposites with internal cavities exhibited excellent gas sensing properties, and the effect of relative humidity on the sensors was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yoga Romdoni, Grandprix T. M. Kadja, Yoshitaka Kitamoto, Munawar Khalil
Summary: Incorporating Ag nanoparticles into core-shell Fe3O4@SiO2 offers promising opportunities for biomedical applications. Fe3O4@SiO2-Ag nanoparticles were successfully synthesized using seed-mediated growth methods. The synthesized composite nanoparticles exhibited good crystallinity and a core-shell structure. The nanocomposites also showed superparamagnetic properties and surface plasmon resonance absorption. Moreover, the Fe3O4@SiO2-Ag nanoparticles demonstrated potential antibacterial activity and cytotoxicity against cancer cells, indicating their potential as antibacterial agents and anticancer drug carriers.
APPLIED SURFACE SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Kasirajan Kasinathan, Karunakaran Marimuthu, Balaji Murugesan, Selvam Samayanan, Sarojini Jeeva Panchu, Hendrik C. Swart, Stephen Rajkumar Inbanathan Savariroyan
Summary: This study focuses on the application of transition-metal dichalcogenides, preparing high-quality MoS2 nanosheets through liquid exfoliation and incorporating silver to create a nanocomposite with significant antibacterial activity. The experimental results show that this nanocomposite exhibits better antibacterial activity against both Gram-positive and Gram-negative bacteria than Staphylococcus aureus. Additionally, the material has a high cell inhibition rate against MCF-7 breast cancer cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Dan Shan, Lumin Liu, Zhao Chen, Jianwei Zhang, Runmeng Cui, Enlv Hong, Baiqi Wang
Summary: Existing antibacterial agents are losing their therapeutic efficacy due to increasing bacterial resistance, necessitating the exploration and development of new antibacterial materials. In this study, Ag nanowires (AgNWs) were synthesized using a hydrothermal method, and their optimal synthesis conditions were identified. These AgNWs demonstrated a strong antibacterial effect against a variety of bacteria strains, with a greater sensitivity observed against Gram-negative bacteria.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Hayfa Habes Almutairi, Nazish Parveen, Sajid Ali Ansari
Summary: The study aimed to synthesize silver-copper oxide nanohybrids with different silver concentrations and characterize their physico-chemical properties. The nanohybrids showed promising antimicrobial activity against E. coli and C. albicans, as well as antiproliferative effects on human colon cancer cells.
Article
Anatomy & Morphology
Emima J. Jeronsia, R. Ragu, Jerline A. Mary, Jerome S. Das
Summary: Ag nanoparticles and Ag/GO nanocomposites were successfully synthesized using peel extracts of Punica granatum, showing excellent antibacterial efficacy against both gram positive and gram negative bacterial strains, as well as dose dependent anticancer activity against human breast cancer cell line (MCF-7).
MICROSCOPY RESEARCH AND TECHNIQUE
(2022)
Article
Biophysics
M. Jebapriya, Raja Venkatesan, Sabah Ansar, Seong-Cheol Kim
Summary: This study aimed to evaluate the antibacterial and anticancer characteristics of nanosized Ag+/Fe2+ codoped hydroxyapatite materials. The Ag+/Fe2+:HAp nanocomposites were synthesized using a facile chemical precipitation method and characterized using various analytical techniques. In vitro experiments demonstrated that the Ag+/Fe2+:HAp nanocomposites have significant cytotoxic effects on human colon cancer cells while showing no toxicity towards normal fibroblast cells.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2023)
Article
Physics, Condensed Matter
Jimmy Castillo, Vicmary Vargas, Daniel Macero, Aurelie Le Beulze, Wladimir Ruiz, Brice Bouyssiere
Summary: This study presents different methodologies for preparing Fe2O3@SiO2 nanoparticles and characterizing them. A new one-step method to obtain silica nanoparticles loaded with iron oxides and with high magnetic properties was highlighted.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
G. K. Prashanth, H. M. Sathyananda, P. A. Prashanth, Manoj Gadewar, M. Mutthuraju, S. R. Boselin Prabhu, B. M. Nagabhushana, C. Shivakumara, Srilatha Rao, Dibyalochan Mohanty
Summary: In this study, silver/copper oxide nanocomposites (Ag/CuO NCs) were successfully synthesized using a solution combustion method with the help of a bio-fuel as a reductant. The synthesized Ag/CuO NCs exhibited higher antimycobacterial and anticarcinogenic activities compared to undoped CuO nanoparticles.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Inorganic & Nuclear
Vanessa Nahrstedt, Daniel Stadler, Thomas Fischer, Tomas Duchon, David N. Mueller, Claus M. Schneider, Sanjay Mathur
Summary: New heterometallic In-Fe alkoxides were synthesized and characterized, showing different metal center arrangements and thermal decomposition behaviors. Transmission electron microscopy and magnetic measurements confirmed the properties of nanocomposites and ferromagnetic anomalies in pure InFeO3 particles.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Physical
M. Szkoda, A. Ilnicka, Z. Zarach, D. Roda, A. P. Nowak, K. Trzcinski
Summary: The Ti-Fe2O3/In2O3 layers were prepared on different substrates using hydrothermal method and characterized using various techniques. The photoanodes were tested for water oxidation and it was found that the presence of TiO2 nanotubes as a substrate significantly increased the photocurrent generation efficiency. This work highlights the potential of TiO2 nanotubes for improving the performance of photoanodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Polymer Science
Shuai Pan, Qingmei Yu, Lulu Yu, Yueyang Xu, Ruijiang Liu
Summary: The magnetic NZFO@Ag-R nanocomposites prepared with silver nanoparticles exhibit excellent antibacterial properties, effectively inhibiting the growth of E. coli and S. aureus. Increasing silver content enhances antibacterial activity, but the effect levels off after reaching a certain proportion.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Physical
Seyede Raheleh Yousefi, Hassan Abbas Alshamsi, Omid Amiri, Masoud Salavati-Niasari
Summary: The synthesis of Co/Co3O4 nanocomposites and their photocatalytic and antimicrobial activities were investigated in this study, confirming the synthesis through systematic characterization methods. The antibacterial activity and photocatalytic activity of the nano-catalysts were evaluated against clinical pathogens and organic colors, showing strong efficacy against gram-negative microorganisms.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Biotechnology & Applied Microbiology
Nouran Rezk, Abdallah S. Abdelsattar, Salsabil Makky, Assmaa H. Hussein, Azza G. Kamel, Ayman El-Shibiny
Summary: This study biosynthesized Au-Ag nanoparticles using propolis and examined their antibacterial activity against antibiotic-resistant bacteria as well as their anticancer activity. The results showed that these nanoparticles exhibited antibacterial activity against various bacteria and had a cytotoxic effect on HEPG2 cells.
Article
Biochemistry & Molecular Biology
Ahmad Reza Gharaati, Alireza Allafchian, Fathallah Karimzadeh
Summary: In this study, a novel core-shell antibacterial agent for water disinfection is presented. The nanocomposite, synthesized by combining quince seed mucilage as the shell material and Fe3O4 as the core material, exhibits enhanced antibacterial activity due to the effective prevention of agglomeration of silver nanoparticles on the shell. The incorporation of magnetic Fe3O4 allows for easy retrieval of the nanocomposites from the medium, enabling their reusability.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Biotechnology & Applied Microbiology
Phong Thanh Vo, Huu The Nguyen, Hai Thi Trinh, Viet Minh Nguyen, Anh-Tuan Le, Huy Quang Tran, Thuy Thi Thu Nguyen
Summary: This study presents a new fertilizer formulation based on urea, chitosan, and poly (vinyl alcohol) for slow release of urea, with improved hydrolytic stability and sustained release effects. The interaction between urea and functional groups of chitosan and PVA significantly affects the thermal properties of the formulation. The formulation shows potential as a slow-release fertilizer to reduce adverse environmental and economic impacts in agriculture.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Materials Science, Multidisciplinary
Van-Tuan Hoang, Ngo Xuan Dinh, Nguyen Le Nhat Trang, Nguyen Tien Khi, Nguyen Van Quy, Pham Anh Tuan, Doan Quang Tri, Le Hong Thang, Tran Quang Huy, Anh-Tuan Le
Summary: An efficient colorimetric probe based on surface-functionalized silver nanoparticles was developed for sensitive detection of thiram pesticide in water samples, with amine-functionalized AgNPs showing higher stability and sensitivity in thiram detection. The probe exhibited a linear detection range from 0.1-100 mu M with a detection limit of 0.036 mu M, making it a promising platform for highly efficient detection of thiram in environmental water solutions.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Engineering, Electrical & Electronic
Quang Khue Vu, Thi Hue Nguyen, Anh-Tuan Le, Ngoc Phan Vu, Xuan Dinh Ngo, Tien Khi Nguyen, Thanh Thuy Nguyen, Chung Van Pham, Thi Luyen Nguyen, Thanh Le Thi Dang, Matteo Tonezzer, Quang Huy Tran
Summary: This paper presents a reliable solution to enhance the electron transfer and stability of screen-printed carbon electrodes (SPCEs) for the direct detection of pathogenic bacteria. By modifying the SPCEs with a nanocomposite of silver nanoparticles (AgNPs) and reduced graphene oxide (rGO), the peak current was increased and the charge transfer resistance was decreased. The modified electrodes could detect Salmonella bacteria directly with a low limit of detection (LoD) of 22 CFU/mL.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Nguyen Thi Hue, Tuyet Nhung Pham, Ngo Xuan Dinh, Hoang Van Tuan, Nguyen Thi Thu Thuy, Man Hoai Nam, Vu Dinh Lam, Anh-Tuan Le, Tran Quang Huy
Summary: Gold nanoparticles (AuNPs) with a diameter range of 10-20 nm were synthesized and used to modify the working electrode surface of screen-printed carbon electrodes (SPCEs) and screen-printed platinum electrodes (SPPtEs) for the direct detection of chloramphenicol (CAP). The modified electrodes showed significantly enhanced electrochemical performance, especially Au/SPCEs, which exhibited improved conductivity, electrochemically active area, and stability compared to Au/SPPtE. The use of AuNPs to modify SPCEs is a promising approach to enhance the direct detection of CAP.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Mai Quan Doan, Nguyen Ha Anh, Nguyen Xuan Quang, Ngo Xuan Dinh, Doan Quang Tri, Tran Quang Huy, Anh-Tuan Le
Summary: An electrochemical approach was used to green synthesize gold and silver nanoparticles with high levels of purity and scalability, which were then deposited on aluminum substrates for SERS-based detection of Methylene Blue. The noble-metal nanoparticles exhibited outstanding sensing performance for MB detection with high enhancement factors.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Nguyen Ha Anh, Mai Quan Doan, Ngo Xuan Dinh, Tran Quang Huy, Doan Quang Tri, Anh-Tuan Le
Summary: Electrochemically synthesized gold nanoparticles were used to fabricate surface enhanced Raman spectroscopy sensors for monitoring thiram and CAP in food samples. The SERS performance of the sensors was closely associated with the molecular structure of the analytes, and the adsorption abilities of the analytes on the nanoparticles surface and in the nano-gaps were studied. Thiram showed better adsorption ability than CAP due to its sulfur-containing structure and smaller steric hindrance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Quan Doan Mai, Ha Anh Nguyen, Thi Lan Huong Phung, Ngo Xuan Dinh, Quang Huy Tran, Tri Quang Doan, Anh-Tuan Le
Summary: This study investigates the influence of energy levels and alignments of molecular orbitals on the charge transfer process and surface-enhanced Raman scattering (SERS) phenomenon. Experimental results show that the detection of antibiotics on electrochemically synthesized colloidal silver nanoparticles (e-AgNPs) as substrates differs due to the different energy levels of the antibiotics. The hypothesis is confirmed by testing other organic compounds. The study reveals a clear correlation between the energy level of analytes and their SERS signals.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Electrochemistry
Tuyet Nhung Pham, Xuan Nui Pham, Hoa Thi Nguyen, Thanh Pham, Quang Huy Tran, Anh-Tuan Le
Summary: MIL-53(Fe), MIL-101(Cr), and MIL-53(A1) were successfully prepared and selected as promising modifying materials on electrode surface for chloramphenicol (CAP) detection. Among them, MIL-101(Cr)/SPE and MIL-53(Fe)/SPE exhibited excellent electrochemical performance, while MIL-53(Al)/SPE showed poor performance due to weak electron conductivity and lack of electrocatalytic active sites. Further optimization of the conductivity and adsorption capacity balance in MIL materials is needed for electrochemical sensors.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Polymer Science
Thuy Thi Thu Nguyen, Huu The Nguyen, Hai Thi Trinh, Trang Thi Thu Bui, Anh-Tuan Le, Tran Quang Huy
Summary: In this study, the adsorption capacity of electrospun PVDF/GO membranes for Pb2+ was compared. The results showed that the adsorption performance increased with higher GO contents. The diameter of the electrospun PVDF/GO fibers did not significantly affect the adsorption capacity. The addition of PEG improved the hydrophilicity of the fibers and increased the Pb2+ adsorption. The adsorption behavior was influenced by contact time and pH. The PVDF/GO/PEG membranes maintained a high Pb2+ removal rate after six adsorption-desorption cycles.
MACROMOLECULAR RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Hue Thi Nguyen, Tuyet Nhung Pham, Anh-Tuan Le, Nguyen Thanh Thuy, Tran Quang Huy, Thuy Thi Thu Nguyen
Summary: This study prepared nanoformulation of berberine to enhance its solubility and improve its antibacterial effectiveness against hospital-acquired infections. The prepared BBR nanoparticles showed a narrow size distribution and significantly enhanced antibacterial activity compared to pure BBR at the same concentration.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
Quan Doan Mai, Ha Anh Nguyen, Ngo Xuan Dinh, Nguyen Thi Thu Thuy, Quang Huy Tran, Pham Cong Thanh, Anh-Tuan Pham, Anh-Tuan Le
Summary: In-paper flexible SERS chips were prepared by immersing filter paper into e-AgNP solution and drying naturally at room temperature. The chips allowed for two sample collecting approaches, the dip and dry method for soluble target analytes and the paste and peel off procedure for analytes on surfaces. These chips were used for in-situ detection of methylene blue dye in river water and thiram pesticide on apple skin, with detection limits of 10-10 M and excellent recovery rates. The simple procedures and versatility of the e-AgNPs-based in-paper SERS chips bring SERS techniques closer to real applications.
Article
Chemistry, Multidisciplinary
Hue Thi Nguyen, Tuyet Nhung Pham, Le Thi Le, Tien Khi Nguyen, Anh-Tuan Le, Tran Quang Huy, Thuy Thi Thu Nguyen
Summary: This study introduces the bioformulations of Ag/BBR and ZnO/BBR complexes against pathogenic bacteria in the gastrointestinal tract. The presence of BBR significantly influenced the nanoparticle growth, resulting in the formation of core/shell structured Ag/BBR and ZnO/BBR NPs with small particle sizes. The antibacterial test showed that BBR, Ag, or ZnO components all contributed to the increase of antibacterial ability of Ag/BBR and ZnO/BBR NPs against both methicillin-resistant Staphylococcus aureus (MRSA) and Salmonella enteritidis (S. enteritidis).
Article
Chemistry, Multidisciplinary
Dao Thi Nguyet Nga, Nguyen Le Nhat Trang, Van-Tuan Hoang, Xuan-Dinh Ngo, Pham Tuyet Nhung, Doan Quang Tri, Nguyen Duy Cuong, Pham Anh Tuan, Tran Quang Huy, Anh-Tuan Le
Summary: This study explored the use of electrochemically exfoliated graphene oxide (GO)-modified screen-printed carbon electrodes for the detection of the nitrofuran antibiotic furazolidone (FZD). By designing GO samples with different oxygen functional group content/defect density, the researchers observed significant changes in the kinetic parameters of electron transfer reactions, leading to improved electrochemical response for FZD detection. The proposed electrochemical nanosensor showed promising applications in food-producing animal safety monitoring.
Review
Chemistry, Multidisciplinary
Nguyen Ha Anh, Mai Quan Doan, Ngo Xuan Dinh, Tran Quang Huy, Doan Quang Tri, Le Thi Ngoc Loan, Bui Van Hao, Anh-Tuan Le
Summary: Modern society is facing serious health problems, such as food safety, diseases and illness. Therefore, it is urgent to develop analysis methods for the detection and control of food contaminants, disease biomarkers, and pathogens. Gold nanoparticles (AuNPs) have emerged as promising transducers for optical sensing systems due to their simple preparation, high surface-to-volume ratio, excellent biocompatibility, and unique optical properties. This review provides an overview of the synthesis of AuNPs and their optical properties, as well as the recent advances in the development of AuNP-based optical nanosensors for monitoring food contaminants, disease biomarkers, and pathogens. The challenges and future directions in the application of these nanosensors are also discussed.
Article
Chemistry, Multidisciplinary
Tuyet Nhung Pham, Nguyen Thi Hue, Young-Chul Lee, Tran Quang Huy, Nguyen Thi Thu Thuy, Hoang Van Tuan, Nguyen Tien Khi, Vu Ngoc Phan, Tran Dang Thanh, Vu Dinh Lam, Anh-Tuan Le
Summary: Ag@ZnO and Ag@ZnO/MgAC photocatalysts were synthesized using a simple two-step electrochemical method with the addition of magnesium aminoclay as a stabilizer and a Lewis base. These photocatalysts showed great efficiency in degrading MB under visible light irradiation and exhibited good antibacterial activity against Salmonella and Staphylococcus aureus, indicating high potential for applications in bactericidal and photocatalytic fields.
