Using recycled tetrapak and Ag/BaMoO4 nanoparticles to make efficient and flexible solid state supercapacitors

Using Recycled Tetrapak and Doped Titanyl/Vanadyl Phthalocyanine to Make Solid-State Devices

“…The small peaks in the diffractograms are associated with the low crystallinity of the films, although the crystallinity of the films on TCS electrodes is higher than that on silicon. Finally, and according to the results reported in the bibliography [20,47,48], the XRD patterns of the films deposited on TCS electrodes (see Figure 5b), depicts the band at 38.4°, which are associated with cellulose type I and type III [47,48]. While the peaks at 44.6 and 65.04° are attributed to the graphitic carbon randomly oriented on the Tetrapak surface [32].…”

“…Besides, an important approach in modern organic electronics is the manufacture of optoelectronic devices, with components that can be recycled [20]. Regarding the above, the VOPc and TiOPc phthalocyanines have not been studied, although the interest in degradable electronics has been growing, with the purpose of reducing electronic waste, usually involving toxic materials that take long to decompose [21][22][23][24][25].…”

“…Among the degradable polymers that have been used as substrates are polyethylene terephthalate (PET) [26], polyvinyl alcohol (PVA) [27], poly lactic-co-glycolic acid (PLGA) [28] and naturally derived materials, such as cellulose [29,30]. In this sense, Tetrapak waste could be a good candidate because it is abundant and it is made of 71-75% cellulose, 5% aluminum and 20-24% polymer [20,31]. Besides, according to Platnieks et al [31], Tetrapak is one of the most extensively used food packaging materials and a large quantity of this packaging ends up in landfills as garbage.…”

Hierarchical Graphitic Carbon Nitride–Zeolitic Imidazolate Framework-67 Nanostructures Adorned on Calcium Molybdate Nanospheres for High-Performance Supercapacitor Applications

“…As special types of nanostructured materials, molybdate-like materials, such as nanostructured alkaline earth metal molybdates, have piqued the interest of many researchers in recent years because of their wide-ranging industrial applications. − Among them, metal molybdates with the general formula AMoO 4 (A = Ca, Sr, and Ba) are oxide-based host materials with excellent luminescent properties as a result of their energy transfer properties from the host lattice to the dopant ions. − Molybdenum-containing binary metal oxides have drawn particular attention because of their charge-coupled Mo 6+ /Mo 4+ structure, which enhances the power and energy density of SCs. Additionally, binary metal oxides with new structural and chemical features, such as NiMoO 4 , MnMoO 4 , and CuMoO 4 , provide enhanced conductivity, durability, and high capacity compared to single-component oxides. − For instance, Wang et al produced FeMoO 4 -doped graphene composites via a hydrothermal method, achieving a specific capacity ( Q s ) of 135 F g –1 at 1 A g –1 .…”

Recycling spent masks to fabricate flexible hard carbon anode toward advanced sodium energy storage

“…At present, how to effectively dispose these massive spent masks become an intractable issue for the public. It is worth noting that a large proportion of masks are made of polymer textile fabrics, which stimulates the researchers to recycle these spent masks for fabricating low-cost yet high value-added carbon materials toward energy storage communities, such as supercapacitors [3] , [4] , [5] and rechargeable batteries.…”