A facile route for the synthesis of Co, Ni and Cu metallic nanoparticles with potential antimicrobial activity using novel metallosurfactants

Green dodecylamine-capped hafnium oxide nanosystem: evaluating the toxicity profile and electrochemical hydrogen sulfide sensing efficiency

“…2(a) and (b)). 37 In addition, the asymmetric stretching sharp bands at 2918–2950 cm −1 were indicative of the methylene (CH 2 ) groups. The N–H symmetric stretching frequency in DDA appeared at 3372.5 cm −1 ; however, it was relatively shifted to a lower frequency in the [HfCl 4 (DDA) 2 ] complex (3254 cm −1 ).…”

“…The loss of 70-80% weight percentage in the temperature range 120-350 1C may be due to the decomposition of the [HfCl 4 (DDA) 2 ] complex (eqn (3)). 37 In the successive step, the 20% left over hafnium tetrachloride (HfCl 4 ) contributes to the second decomposition reaction Hf (s) and Cl 2 gas (Fig. 2(d), eqn ( 4)).…”

“…At the completion of the ligand insertion reaction, a hexacoordinated [Hf(DDA) 2 Cl 4 ] complex was obtained (Scheme 1, eqn (1)). 30,37,38 The as-obtained complex was recrystallized (in ethanol), dried under vacuum, and then characterized (Scheme 1). Afterward, the conductivity studies of the [HfCl 4 (DDA) 2 ] complex were performed to calculate the critical micelle concentration (CMC) (Fig.…”

“…30,39,40 Afterward, separate solutions of NaBH 4 (in aqueous medium) and [HfCl 4 (DDA) 2 ] complex (in DCM) solutions were intermixed (within 10 : 1 molar ratio) for the adapted reductionoxidation synthesis method (Scheme 1, eqn (2)). 30,37,41 Moreover, this reaction can also get accelerated at the interface of two immiscible liquids (water and DCM) in a mechanically-stirred environment. 42 During synthesis, the presence of surfactant molecules in the reaction cell leads to the formation of smaller nanoparticles as nucleation occurs in the surfactant matrix, with immediate capping of NM by the surfactant molecules, thus preventing further growth.…”

Recent Advances and Perspective of Nanotechnology-Based Implants for Orthopedic Applications

“…Metallic nanomaterials were originally employed in the 1860s, during the industrial revolution, when the metal industry was expanding ( Lausmaa et al, 1990 ). Due to their homogeneous qualities (for instance, high toughness, tensile strength, and durability), simplicity of fabrication, and appropriate biocompatibility, metallic materials play a crucial role in biomedical implant engineering, which are all desired for implant lifetime ( Kaur et al, 2017 ; Jenko et al, 2018 ; Dogra et al, 2019 ). Titanium (Ti) and its alloy Ti6Al4V are popular bioimplant ingredients with fatigue performance, corrosion resistance, great biocompatibility, reduced cobalt concentration, and lightweight.…”