What role does carbonized tannic acid play in energy storage composites?

Rational Design of a Core–Shelled Ti3AlC2@La2Zr2O7 Composite for High-Temperature Broadband Microwave Absorption

“…The surface chemical compositions of the samples were analyzed using an XPS, and signals of the elements O, La, Zr, C, Ti, and Al were detected as shown in Figure b. The C 1s orbit is depicted in Figure c; peaks located at 284.8 and ∼281.3 eV in TAC can be attributed to C–C and C–Ti, , respectively. In contrast, the C 1s signal of TAC@LZO is similar to that of LZO due to the surface coating and limitation of the XPS surface analysis.…”

Protection and Restoration of Damaged Hair via a Polyphenol Complex by Promoting Mechanical Strength, Antistatic, and Ultraviolet Protection Properties

“…PPC shampoo was fabricated by incorporating TA/GA/CA into a common shampoo formula. The combination of TA/GA/CA played a pivotal role in hair protection (e.g., from UV radiation, hair dyeing, and hot hair drying processes) and repair by enhancing the mechanical and electroconductivity, durability, and UV protection properties of the hair owing to their individual characteristic properties [ 21 , 22 , 23 , 24 , 25 , 26 ]. The PPC formed a graphene-like structure via hydrogen bonding and π-π stacking between each phenolic species after complexation using PBS (pH 8.5), resulting in improved mechanical strength, which plays a vital role in hair restoration ( Scheme 1 a) [ 15 ].…”

“…Tannic acid (TA), a polyphenol isolated from plants, provides UV protection owing to its ability to absorb UV radiation [ 21 ]. Additionally, tannic acid can enhance the electrical conductivity of a material owing to its abundance of surface groups and ability to stabilize molecular networks [ 22 , 23 ]. Other phenolic compounds that have shown promising performance are gallic (GA) and caffeic (CA) acids.…”

Functions of metal–phenolic networks and polyphenol derivatives in photo(electro)catalysis

“…4c). 62 For the specific surface area of cTA can be evaluated by N 2 physical adsorption–desorption measurements. The experimental results demonstrated a significant increase in the specific surface area, from 9.7 m 2 g −1 to 292 m 2 g −1 , as the pyrolysis temperature rose from 500 °C to 800 °C.…”

“…This indicated the transformation of cTA from materials with large mesopores and a low surface area to predominantly microporous materials with an appreciable surface area. 62…”