Silver nanoparticles

Silver nanoparticles (Ag NPs) were synthesized and characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and absorption spectroscopy. Using Debye-Scherrer’s formula and the result of the XRD spectrum, the size of the Ag NPs was estimated at approximately 8 nm.

7p viengfa 28-10-2024 0 0   Download

Silver nanoparticles (Ag NPs) with a size of around 9 nm were fabricated and quantified through fluorescence quenching of rhodamine B (RhB). A series of solutions composed of RhB with various concentrations of Ag NPs ranging from 0.09 pM to 0.98 pM were prepared, and optical properties were investigated by absorption and fluorescence spectroscopies.

8p viengfa 28-10-2024 3 2   Download

This study focused on the preparation of silver nanoparticles embedded on the supports such as bentonites, zeolites, activated carbon, zinc oxide, and aluminum oxide. Catalytic activity was evaluated via the transfer hydrogenation of 4-methoxybenzaldehyde. The results will be presented in this report.

5p vikwong 29-09-2024 4 2   Download

Silver nanoparticles with the diameter of 5 – 10 nm were successfully deposited on TiO2 nanowires by a facile and low-cost photoreduction method in alkaline solution under UV irradiation. The mutual coordination between light irradiation and NH4OH reduction gives rise to the formation and decoration of the Ag nanoparticles on the surface of TiO2 nanowires.

5p vikwong 29-09-2024 4 1   Download

The present study focuses on the preparation of silver/copper bimetallic hybrid nanoparticles by green method from precursor solutions of silver nitrate & copper nitrate and the locally available citrus fruit (lemon) peel extract which behaves as the stabilizing and reducing agent. Initially, the formation of hybrid nanoparticles was noticed in the reaction mixture by colour change.

7p dianmotminh02 03-05-2024 7 2   Download

The objective of this project was to develop \(Ti{O_2}\) based multifunctional substrates through silver decoration, while simultaneously enhancing the photocatalytic performance of \(Ti{O_2}\) in the substrate. Employing Ag nanoparticles introduced additional functionality to the system, namely surface-enhanced Raman scattering (SERS), thus enabling the detection of trace amounts of organic molecules prior to their degradation, all with the same substrate.

123p runthenight04 02-02-2023 7 2   Download

Tác giả trình bày phương pháp “xanh” để tổng hợp các hạt nano bạc (silver nanoparticles- AgNPs), trong đó điểm mới là sử dụng các hạt nano cacbon (hay chấm lượng tử graphen -GQDs) làm chất khử và đồng thời làm chất ổn định.

89p capheviahe27 23-02-2021 45 7   Download

: In recent decades, the antimicrobial surfaces/coating properties towards a longlasting microbicidal effect have drawn enormous attention by researchers, they have been developed and used in a wide variety of high-touch hospital devices as a potential approach.

9p larachdumlanat127 02-01-2021 11 3   Download

This study aimed to enhance our insight on the potential toxicological effects of silver nanoparticles (AgNPs) into the aquatic environment. To investigate the chronic toxicity of nanoparticles, freshwater micro-crustacean Daphnia lumholtzi was exposed to different concentrations of 0.2, 0.5 µg/l AgNPs, and control, for 21 days.

8p viamman2711 07-08-2020 34 3   Download

The silver and gold nanoparticles were biosynthesized using leaves of a pharmacologically important plant Heliconia rostrata.

8p tocectocec 25-05-2020 7 0   Download

The objectives of the thesis: Research, fabricate and determine the characteristic of three nanomaterials (silver, copper and iron) and evaluate the ability to inhibit the cyanobacteria of nanomaterials in fresh water bodies.

27p xacxuoc4321 09-07-2019 30 5   Download

Colloidal silver nanoparticles were synthesized by
Co-60 ray irradiation of Ag+ in aqueous solution containing polyvinyl alcohol (PVA) as stabilizer and 0.5 M ethyl alcohol as free radical (OH• ) scavenger. The effect of Ag+ concentration which varied from 1 to 50 mM on the saturated conversion dose (D) of Ag+ into Ag determined by UV-vis spectroscopy and the size of Ag nanoparticles characterized by transmission electron microscopy (TEM) were investigated. The dependence of D (kGy) and average size (d, nm) of Ag nanoparticles on Ag+ concentration was found out to be as: D (kGy) = 0.

5p uocvong03 24-09-2015 36 4   Download

Vật liệu kháng khuẩn dựa trên cơ sở" bạc nano hạt (Nanoparticle silver)" hiện đang được đầu tư nghiên cứu rất nhiều trên thế giới nhờ khả năng diệt khuẩn rất tốt và không gây độc đối với sức khỏe con người.Trong đề tài nghiên cứu này, chúng tôi đã tổng hợp thành công vật liệu "Silver nanoparticles/ carbon nanotubes/ cotton" và thiết kế hệ thống lọc nước sử dụng loại vật liệu này. Kết quả thu được, bạc nano hạt có kích thước 5 ÷ 6 nm được phân tán rất tốt trên CNTs và cotton bằng các phương...

10p coxetuanloc 09-01-2013 147 33   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Photochemically reduced polyoxometalate assisted generation of silver and gold nanoparticles in composite films: a single step route

9p dauphong18 09-03-2012 44 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Thermal decomposition as route for silver nanoparticles

5p dauphong18 09-03-2012 41 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: An Organic Metal/Silver Nanoparticle Finish on Copper for Efficient Passivation and Solderability Preservation

6p sting10 07-03-2012 51 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Biomedical potential of silver nanoparticles synthesized from calli cells of Citrullus colocynthis (L.) Schrad

8p panasonic01 13-12-2011 43 5   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Use of silver nanoparticles increased inhibition of cell-associated HIV-1 infection by neutralizing antibodies developed against HIV-1 envelope proteins

9p toshiba25 08-12-2011 44 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Silver nanoparticles are broad-spectrum bactericidal and virucidal compounds

8p toshiba25 08-12-2011 53 3   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Antimicrobial activity of spherical silver nanoparticles prepared using a biocompatible macromolecular capping agent: evidence for induction of a greatly prolonged bacterial lag phase

12p toshiba25 08-12-2011 53 3   Download