CAS 7440-05-3 Pd nanopowder Ultrafine Palladium as catalyst
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
Size:20-30nm Purity:99.95% CAS No:7440-05-3 ENINEC No.:231-115-6 Appearance:black Powder Shape:spherical
We can supply different size products of niobium silicide powder according to client's requirements. Size:1-3um; Purity:99.5%;Shape:granular CAS No:12034-80-9;ENINEC No.:234-812-3
Ni2Si particle,99.5% purity,granular shape,is used for Microelectronic integrated circuit, nickel silicide film,etc. Size:1-10um; CAS No:12059-14-2;ENINEC No.:235-033-1
The combination of flexibility and elasticity makes elastomers essential in a wide range of industries, including automobiles, construction, and consumer goods. In addition, they are becoming increasingly attractive in emerging fields such as microfluidics, soft robots, wearable electronics, and medical devices. Having sufficient mechanical strength is a prerequisite for any application. Therefore, resolving the seemingly contradictory attributes between softness and strength has always been an eternal pursuit. Natural spider silk has extraordinary strength, providing a constant source of inspiration for designing and synthesizing soft materials. Although its unique superstructure is difficult to replicate, the broader principles of designing layered structures provide useful tips for designing elastic materials with high mechanical strength. However, the above design principles cannot be directly applied to digital light processing (DLP) 3D printing based on photopolymerization. DLP printing needs fast light curing to achieve the necessary fast gel. Therefore, photo resins usually contain a considerable amount of multifunctional acrylic or methyl acrylic esters, which severely limits the freedom of molecular design. In addition, rapid curing can lead to uneven network formation and residual stress, which is also detrimental to mechanical properties. The potential for large-scale production of 3D printing is hindered by its low manufacturing efficiency (printing speed) and insufficient product quality (mechanical performance). The latest progress in ultra fast 3D printing of photopolymers has alleviated the issue of manufacturing efficiency, but the mechanical properties of typical printed polymers still lag far behind traditional processing techniques. Recently, Professor Xie Tao and Associate Researcher Wu Jingjun's team from the School of Chemical Engineering and Bioengineering at Zhejiang University published an article titled "3D printable elastomers with exceptional strength and toughness" in Nature. The study reported a 3D photo printed resin chemistry that produced elastomers with a tensile strength of 94.6 MPa and a toughness of 310.4 MJ m-3, far exceeding any 3D printed elastomer. Mechanically speaking, this is achieved by printing dynamic covalent bonds in polymers, allowing for network topology reconfiguration and facilitating the formation of hierarchical hydrogen bonds (especially amide hydrogen bonds), microphase separation, and interpenetrating structures, thereby synergistically promoting excellent mechanical properties. This work provides a brighter future for large-scale manufacturing using 3D printing. Figure 1: Chemical Design of 3D Photoprinted Elastomers © 2024 Springer Nature Figure 2. Mechanical properties of elastomers and their strengthening and toughening mechanisms © 2024 Springer Nature Figure 3. Elasticity and mechanical properties of elastomers © 2024 Springer Nature Figure 4: Stron...
Read MoreSilver nanoparticles are widely used as reagents for enhancing Raman scattering in SERS due to their stability and excellent enhancement properties. On March 29, 2024, Nano Convergence reported an economically efficient, easy to operate, and environmentally friendly method for in-situ manufacturing of SERS substrates. This method utilizes the self-assembly of bCP in a single droplet to form an organic thin film doped with silver nanoparticles (AgNPs) on the surface of paper for the first time. The researchers used micro liter level ultra-low components, and the entire self-assembly process occurred at the air/liquid interface of a single droplet deposited on a paper substrate. The research results indicate that bCP has a dual function. One is to promote the self-assembly of silver loaded thin films, and the other is to stabilize micro droplets. SEM analysis showed that with the help of self-assembled copolymer films, AgNPs with an average size of 47.5nm were formed. These morphological characteristics of AgNPs endow the paper surface with plasma characteristics. In addition, researchers investigated the sensitivity of the designed nano hybrid electro pulp paper substrate by recording the SERS curve of Rhodamine 6G (R6G) aqueous solution, with a LOD value of 48.9pM. As a proof of concept, the detection limits of nanohybrid plasma paper for two newly emerging pollutants, sildenafil (SD) and flubenzelin (FLBN), are 1.48nM and 3.45nM, respectively. The advantage of this new method is that it can bypass additional steps such as synthesizing colloidal nanoparticles when preparing ultra sensitive and reproducible SERS substrates, and is expected to develop into an on chip laboratory detection device. SAT NANO is a best supplier of silver nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle, if you have any enquiry, please contact us at admin@satnano.com
Read MoreSilver based materials have strong antibacterial properties, but their potential toxicity issues cannot be underestimated. Therefore, it is urgent to construct a safe and non resistant dual antibacterial system. On June 6, 2024, Food Hydroloids reported that researchers synthesized montmorillonite fixed AgNPs using tea polyphenols as reducing agents and montmorillonite as fixing agents（ AgNPs@MMT ）. Then, arginine was grafted onto the C2-NH2 group of the chitosan chain through N-acylation reaction to obtain arginine grafted chitosan (ACS), and finally AgNPs@MMT Prepare composite films by mixing ACS and gelatin G. The results showed that the work successfully prepared AgNPs with a size of 6.72 ± 4.66nm and ACS with a grafting degree of 0.153, and verified the relationship between ACS and FIC index AgNPs@MMT The synergistic antibacterial effect of. When ACS and AgNPs@MMT When the addition amount was reduced by 75% and 79.1% respectively, the antibacterial rate could still reach 99.9%. ACS/G/ AgNPs@MMT-2 Composite films have excellent mechanical properties, water vapor/UV barrier properties, antioxidant activity, degradation performance, and biosafety. In addition, due to synergistic effects, ACS/G/ AgNPs@MMT-2 The antibacterial rates of the film reached 99.24 ± 0.19% and 99.49 ± 0.40%, respectively, and due to the slow release of silver (only about 11.27% of silver was released within 20 days), the film has excellent long-term antibacterial performance. Finally, ACS/G/ AgNPs@MMT-2 Thin films can significantly improve the freshness of food and can be used as new antibacterial packaging materials. SAT NANO is a best supplier of silver nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle size, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreThe integration of nanotechnology and textile engineering has promoted the development and performance improvement of multifunctional intelligent materials in various application fields. On June 13, 2024, the Chemical Engineering Journal reported that researchers used a one-step method to anchor silver nanoparticles (AgNPs) onto multi walled carbon nanotubes (CNTs) and spray them onto non-woven fabrics to synthesize a multifunctional smart textile. The addition of carbon nanotubes not only enhances the conductivity of the fabric, but also improves the heating efficiency of the fabric, thereby improving its comfort in cold environments through electric heating. The addition of AgNPs enhances the photothermal function of the fabric. Under illumination of 100mW/cm, the photothermal conversion efficiency reaches 89.7%, and at a current of 1.0A, the temperature can reach 45.0 ° C. The study also found that the fabric has excellent piezoresistive and strain sensing capabilities, with a response time of only 359ms at a pressure of 3.25kPa. In addition, the fabric can also detect subtle physiological signals such as the wearer's pulse, finger bending, and spinal curvature, while also monitoring environmental humidity in real-time. This study not only promotes the development of intelligent textile technology, but also solves the unique challenges faced in the one-step preparation of CNTs and AgNPs on non-woven fabrics, thereby achieving the design and manufacturing of innovative materials with customized functions. These developments will have significant impacts on fields such as electric heating, photothermal effects, heat conduction, and heat treatment. SAT NANO is a best supplier of silver nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreThe application of various inorganic nanoparticles in the fields of biology and medicine has always been of great concern. However, due to non-specific interactions, nanoparticles can form protein corona in biological media, posing obstacles to the translation of nanomedicine into clinical applications. On March 12, 2024, ACS Nano reported that researchers used a series of dihydrolipoic acids to study the interaction between gold nanoparticles and serum proteins. Some simple analytical techniques (such as agarose gel electrophoresis, ultraviolet visible absorption spectrum and dynamic light scattering) were used to study the formation of protein corona around spherical AuNPs with different surface coatings. Research has found that stable AuNPs with small ligands such as DHLA or citric acid promote non-specific adsorption of proteins. In contrast, adding hydrophilic groups (such as PEG blocks or oligomeric groups) to DHLA can fundamentally eliminate non-specific interactions, obtain a uniform dispersion, and maintain the unique pink color of gold colloids. Research has found that encapsulating AuNPs with polyethylene glycol or DHLA with added copolymers can fundamentally prevent the formation of corona, regardless of the charge and size of the ligand. These findings confirm the importance of surface chemistry in controlling protein crown formation and can guide the design of colloidal nanomaterials that are most suitable for biological applications. SAT NANO is a best of supplier of gold nanopowder in China, we can offer 20-30nm, 50nm, 100nm with 99.99%, if you have any enquiry, please feel free to contact us at admin@satnano.com
Read MoreOsteoarthritis (OA) is a common degenerative joint disease that can lead to severe pain, motor dysfunction, and even disability. An increasing number of studies have shown that improving the imbalance of gut microbiota in OA and increasing the content of active metabolites (SCFAs) can further alleviate clinical symptoms and delay the progression of the disease. On April 8, 2024, the Journal of Nanobiology reported on the mechanism by which Au nanoparticles improve excessive bone loss by altering the gut microbiota during the development of osteoporosis (OP) and rheumatoid arthritis (RA). Researchers observed that Au nanoparticles significantly reduced OA induced by anterior cruciate ligament transection (ACLT) in a gut microbiota dependent manner. 16S rDNA gene sequencing showed that Au nanoparticles altered the diversity and structure of gut microbiota, manifested by an increase in Akkermansia and lactobacillus abundance. In addition, Au nanoparticles also increase the content of SCFAs (such as butyric acid), which improve bone destruction by reducing inflammatory response. It is worth noting that Au nanoparticles regulate the dynamic balance of M1/M2 macrophages and increase serum levels of anti-inflammatory cytokines such as IL-10. This study indicates that Au nanoparticles play an anti osteoarthritis role by regulating the interaction between the "microbiota gut joint" axis, providing a promising approach for the treatment of osteoarthritis. SAT NANO is a best supplier of gold nanoparticle in China, we can offer 20-30nm, 50nm, 100nm particle with 99.99%, if you have any enquiry, please contact us at admin@satnano.com
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