Effect of cellulose nanoparticles from garlic waste on the structural, mechanical, thermal, and dye removal properties of chitosan/alginate aerogels

Development of a facile aerogel‐based ion‐selective electrode using cellulose and carbon nanotubes as transducer materials for potentiometric application

“…Besides, strain values related to the deformation of the material remain similar in both CA and CA2 (≈20%). These results indicated that chemical cross‐linking between cellulose and CNTs resulted in a light structure that increased the size of pores in the aerogel, increasing noticeably the thermal conduction ability by applying the Knudsen type effect 17 reported before.…”

“…CC, and CO str. bindings of cellulose, 17 but also signal at 830 cm −1 corresponds to the CO groups in the calcium carbonate (CaCO 3 ) used in the bleaching process of the paper 18 . On the other hand, new signals for the CC binding in the CA2 were detected for the carbon nanotubes at 1640 and 3330 cm −1 , additionally, other bindings were noticed due to the presence of the CNTs‐ink in which the surfactant signals at 1732 cm −1 correspond to the lignin traces and the overlapped signal of the CN of the urea groups and the CC of carbon nanotubes in the aerogel that are reduced in the CA2 due to the formation of CH str.…”

“…On the other hand, new signals for the CC binding in the CA2 were detected for the carbon nanotubes at 1640 and 3330 cm −1 , additionally, other bindings were noticed due to the presence of the CNTs‐ink in which the surfactant signals at 1732 cm −1 correspond to the lignin traces and the overlapped signal of the CN of the urea groups and the CC of carbon nanotubes in the aerogel that are reduced in the CA2 due to the formation of CH str. bindings generated on the carbon nanotubes and cellulose fibers 17 when the surfactant (NaDDBS) is added at and 2922 cm −1 . This relationship is confirmed by the EDS analyses observed in Figure 2j, and the values obtained from cross‐linking density ( v ) calculation.…”

“…To demonstrate the solubility resistance of CA2 aerogel, a segment of 1 × 1 cm of CA2 was soaked in a beaker with 20 mL of distiller water (pH = 7) and constant stirring (800 rpm), around 1 h at room temperature (25°C). The mechanical properties of CA and CA2 (10 mm 3 ) were analyzed using a texture analyzer (CT3‐10000, Brookfield, USA), in the compression test mode and the results were presented as stress/strain curves 17 . Finally, for density and porosity experiments, samples segments were measured for its thickness, width, and length by using a digital Vernier caliper and the volume (cm 3 ) was calculated.…”

A review of advanced microscopy techniques for the development of nanotechnology in agriculture, food, and the environment

“…Furthermore, plants such as Salicornia (Cárdenas-Pérez et al, 2020) were used in the solution of environmental problems related to salinity soils. Moreover, CLSM (figure 1b) shows some interesting examples based on the study of agro-industrial residues of garlic and agave (Hernández-Varela et al, 2021a), some mango ripening processes (Cárdenas-Pérez et al, 2018), and studies on dye removal from aerogels based on cellulose nanoparticles (Hernández-Varela et al, 2022). Since SRM presents a revolution in the study of samples in the nanometric scale using fluorescent techniques, some examples (figure 1c) could be found in the study of RNA polymerase II in plant nuclei (Schubert & Weisshart, 2015), the spatial correlation of fat and protein in milk gels (Glover et al, 2019), as well as a non-fluorescent surface reaction that follows single photo-electrocatalysis in water decontamination (Mao et al, 2019).…”