Tìm thấy 20+ kết quả cho từ khóa "Gold nanoparticles"
tailieu.vn Xem trực tuyến Tải xuống
Electrodeposited Gold Nanoparticles Modified Screen Printed Carbon Electrode for Enzyme-Free. Glucose Sensor Application. Abstract: An enzyme-free glucose sensor has been developed based on electrodeposited gold nanoparticles modified screen-printed carbon electrode (SPCE). The combination of electrodeposited gold nanoparticles and SPCE, makes the device compact, low cost, and reliable enzyme-free glucose sensor.
tailieu.vn Xem trực tuyến Tải xuống
Au nanoparticles decorated on activated coke via a facile preparation for efficient catalytic reduction of nitrophenols and azo dyes. Controlled nucleation for the regulation of the particle size in monodisperse gold suspensions. Extinction coefficient of gold nanoparticles with different sizes and different capping ligands. Investigation of the NaBH 4 -induced aggregation of Au nanoparticles
tailieu.vn Xem trực tuyến Tải xuống
In-vitro antibacterial, antioxidant and cytotoxic potential of gold nanoparticles synthesized using novel Elaeocarpus ganitrus seeds extract. In the present study, we have follwed the hydrothermal path for the synthesis of gold nanoparticles (Au NPs) from the biomaterial Elaeocarpus ganitrus seeds extract, which is a rapid, eco-friendly, non-chemical way. Besides, the antioxidant, antibacterial and anticancer properties of Au NPs were studied.
tailieu.vn Xem trực tuyến Tải xuống
An overview of the algae-mediated biosynthesis of nanoparticles and their biomedical applications. Assessment of the in vivo toxicity of gold nanoparticles. Costa LH, Hemmer JV, Wanderlind EH, Gerlach OMS, Santos ALH et al. Biological synthesis of gold nanoparticles using the aqueous extract of the brown algae Laminaria japonica. Ghosh S, Patil S, Ahire M, Kitture R, Jabgunde A et al. Oza G, Pandey S, Mewada A, Kalita G, Sharon M et al. Jalal M, Ansari MA, Alzohairy MA, Ali SG, Khan HM et al.
tailieu.vn Xem trực tuyến Tải xuống
The p-aminohippuric acid capped citrate-gold nanoparticles were comfortably agglomerated in the presence of Ga(III), and the color of the reaction quickly turned from red to violet or blue. Functionalization of AuNPs improves the sensitivity and selectivity of the Col probe.
tainguyenso.vnu.edu.vn Xem trực tuyến Tải xuống
Abstract: Colloidal sphere-like gold nanoparticles were prepared from an HAuCl 4 aqueous solution by the chemical reduction method and by using X-ray irradiation, while rod-like gold nanoparticles were synthesised according to the seed-mediated growth method and by sonoelectrochemistry. Gold nanoparticles exhibit fcc structure. Sphere-like gold nanoparticles have a diameter of 20-60 nm, while rod-like gold nanoparticles have an aspect ratio of 2-4.
tailieu.vn Xem trực tuyến Tải xuống
Effect of gold/cobalt-silica nanoparticle volume ratio on the density of gold nanoparticles attached onto silica-coated cobalt nanoparticles. The effect of Co@SiO 2 /AuNPs volume ratio (v/v) on AuNPs’ deposition on the surface of Co@SiO 2 nanopar- ticles was investigated in the volume ratio range of 0.1–4 by utilizing FE-SEM measurements, which are shown in Figures 4a–4f.
tailieu.vn Xem trực tuyến Tải xuống
Using average power of 400 mW and irradiation time of 15 minutes we prepared gold NPs in deionized water. The results in Fig.5 show gold NPs are rather spherical in shape with mean diameter of 17.1 nm and size ranging from 2.8 to 47.7 nm. The absorption spectrum of gold NPs exhibits the characteristic peak of the surface plasmon band at about 521 nm.. Absorption spectrum, TEM image and size distribution of gold nanoparticles in water.. Preparation of Si NPs in water and toluene.
tailieu.vn Xem trực tuyến Tải xuống
The dependence of the Surface Plasmon Resonance (SPR) of gold nanoparticles on the refractive index of the medium was also investigated.. Quasi-spherical gold nanoparticles were synthesized and then used as the core for the fabrication of Au-PbS core-shell nanoparticles. The synthesis procedure of the gold nanoparticles was reported in detail elsewhere [14].
tainguyenso.vnu.edu.vn Xem trực tuyến Tải xuống
Under the short laser pulses irradiation in the spectral range of the surface plasmon resonance, metal nanoparticles such as silver or gold nanoparticles are excited to upper electronic states by multiphoton absorption. The wet preparation methods range from synthesis by chemical reduction in solution, laser irradiation of metallic salt solution to laser ablation of metal plate.
tailieu.vn Xem trực tuyến Tải xuống
Immobilization and recovery of Au nanoparticles from anion exchange resin: resin-bound nanoparticle matrix as a catalyst for the reduction of 4-nitrophenol. Thermal stability of oxide-supported gold nanoparticles. Carbon supported gold nanoparticles for the catalytic reduction of 4-nitrophenol. Starch-supported gold nanoparticles and their use in 4-nitrophenol reduction. Journal of Catalysis 2013
tailieu.vn Xem trực tuyến Tải xuống
Recently, metal nanoparticles and quantum dots have been used in the electrochemical, optical, and colorimetric detection of coronaviruses [12]. Recently, mannose-functionalized gold nanoparticles radiolabelled with technetium have been used as nanoprobes for the detection of lymph nodes [20].. Phase-transferred and thiol functionalized silver, gold, platinum, and palladium nanoparticles have been used in the formation of thin films and bio- labeling [63]..
tailieu.vn Xem trực tuyến Tải xuống
Green synthesis of copper nanoparticles using Solanum lycopersicum (tomato aqueous extract) and study characterization. doi: 10.2478/v . 10.1016/j.foodchem . Colorimetric detection of trace copper ions based on catalytic leaching of silver-coated gold nanoparticles. doi: 10.1021/am2008486. Colorimetric sensing of silver ion based on anti aggregation of gold nanoparticles. One-pot preparation of creatinine functionalized gold nanoparticles for colorimetric detection of silver ions..
tailieu.vn Xem trực tuyến Tải xuống
An electrochemical sensing platform of cobalt oxide@gold nanocubes interleaved reduced graphene oxide for the selective determination of hydrazine. 10.1016/j.electacta . Electrochemical determination of hydrazine at gold and platinum nanoparticles modified poly(L-serine) glassy carbon electrodes. doi: 10.3906/kim-1906-23 24.
www.vatly.edu.vn Xem trực tuyến Tải xuống
The UV-vis spectra of the gold nanoparticles encapsulated with thiols 4b and 4d in CH 2 C1 2 (Figure 7) are similar and show a broad plasmon band around 510 nm which originates from the formation of the gold colloids (6d,18).. HNMR spectra of the hybrid gold nanoparticles encapsulated with thiol 4b (above) and the free thiol 4b (bottom).. UV-vis spectra of the gold nanoparticles encapsulated with thiol 4b (left) and 4d (right).
tainguyenso.vnu.edu.vn Xem trực tuyến Tải xuống
Official thesis title: Synthesis of antibody attached-gold nanoparticles for fast detection of influenza A virus.. Optimize the fabrication of antibody/gold nanoparticles complex to create kits of fast detection of influenza A virus.
tailieu.vn Xem trực tuyến Tải xuống
The synthesized gold nanoparticles were used as the core of the Au-Cu 2 O core-shell nanoparticles. Figure 2.a-c show typical XRD pattern, TEM image and UV_Vis spectrum of the synthesized Au nanoparticles, respectively. As shown in Fig.2.b., the synthesized Au nanoparticles seem to be quasi-spherical in shape and their average size was estimated to be nm.
tailieu.vn Xem trực tuyến Tải xuống
The ability to control the construction of higher order nanostructures using nanoparticles (NPs) as building blocks is one of the biggest dreams of nanotechnologists. 1 − 3 However, the challenge to control the behavior of the NPs in suspensions and at interfaces remains intact.
tailieu.vn Xem trực tuyến Tải xuống
In 2013, Liu et al. reported the fabrication of PDOP- coated gold nanoparticles and their usage in both in vitro and in vivo studies (Liu et al., 2013). Cytotoxicity tests of the Caco2 cell line indicated that the emergence of the PDOP layer greatly improved the cytotoxicity of the NP system. For this, in the first step, similar to earlier studies, PDOP NPs were synthesized via the oxidative polymerization of dopamine (Zhang et al., 2012).
tailieu.vn Xem trực tuyến Tải xuống
. "Negative differential resistance of a metal–insulator–metal device with gold nanoparticles embedded in polydimethylsiloxane.". [12] Zhang, Qing, et al. "In-situ synthesis of poly (dimethylsiloxane)–gold nanoparticles composite films and its application in microfluidic systems.".