Tribological properties of carbon fabric reinforced phenolic-based composites containing CNTs@MoS2 hybrids

Reutilizing Methane Reforming Spent Catalysts as Efficient Overall Water-Splitting Electrocatalysts

“… 35 , 52 In the spectrum of CNF and GC, the peak at 1198 cm –1 can be attributed to the stretching vibrations of the carboxylic group, which indicates the growth of carbon fibers and graphitic carbon on the spent catalyst, while the peak at 1400 cm –1 depicts the disarranged structure of the interlayered spent catalyst with O–H bend, which was further disordered by hydrothermal treatment, providing more surface area where MoS 2 can get deposited. 53 , 54 The adsorption band at 3445 cm –1 is associated with the stretching vibration of the hydroxyl (−OH) functional group, and the intensity of O–H stretching is reduced in the nanostructured electrocatalyst because more MoS 2 was formed. The hydrazine hydrate used in the synthesis process acted as a reducing agent, which removed the water molecules from the synthesized electrocatalyst, resulting in lowering of O–H transmittance.…”

“…Chemical structures of MoS 2 , spent GC and CNF, and newly formed MoS 2 @CNF and MoS 2 @GC were studied by FT-IR for acquiring the stretching and bending vibrations of functional groups in the samples, as shown in Figure b. In the spectrum of MoS 2 , MoS 2 @CNF, and MoS 2 @GC, the perceptible peaks at 589, 880–960 cm –1 , and 1633–1637 cm –1 delineate the Mo–S, S–S, and Mo–O stretching vibrations, respectively, depicting the formation of MoS 2 . , In the spectrum of CNF and GC, the peak at 1198 cm –1 can be attributed to the stretching vibrations of the carboxylic group, which indicates the growth of carbon fibers and graphitic carbon on the spent catalyst, while the peak at 1400 cm –1 depicts the disarranged structure of the interlayered spent catalyst with O–H bend, which was further disordered by hydrothermal treatment, providing more surface area where MoS 2 can get deposited. , The adsorption band at 3445 cm –1 is associated with the stretching vibration of the hydroxyl (−OH) functional group, and the intensity of O–H stretching is reduced in the nanostructured electrocatalyst because more MoS 2 was formed. The hydrazine hydrate used in the synthesis process acted as a reducing agent, which removed the water molecules from the synthesized electrocatalyst, resulting in lowering of O–H transmittance.…”

Development of xanthan gum‐based solid polymer electrolytes with addition of expanded graphite nanosheets

“…This procedure is responsible for reduce the particle size of the material through an exfoliation of the EG 44 . For this, a solution containing 1 g of EG and 500 ml of a 70% alcoholic solution (ethanol and water) was maintained under sonification (UNIQUE) for 16 h. Then, the resulting dispersion was filtered through a funnel coupled to a vacuum pump and dried in a preheated oven for 2 h at 100°C 45 …”

Synergy of B4C@MoS2 hybrid for significantly improved mechanical and tribological properties of PI/PTFE fabric composites

“…1,2 Fabric composites presented excellent application prospect in the tribological field due to high mechanical strength and self-lubricating properties. 3 Nevertheless, with the upgrade of equipment, the fabric composites are difficult to meet the requirements of harsh operation conditions. 4 In generally, incorporation of filler was considered as a facile and effective method to strengthen the tribological performance of polymer matrix.…”

“…Polymer composites with prominent performance including lightweight, high strength, corrosion resistance are widely applied in aerospace, automobile, military, and medical fields 1,2 . Fabric composites presented excellent application prospect in the tribological field due to high mechanical strength and self‐lubricating properties 3 . Nevertheless, with the upgrade of equipment, the fabric composites are difficult to meet the requirements of harsh operation conditions 4 .…”