Effect of different synthesis methodologies on the adsorption of iodine

Tröger’s Base-Enriched Conjugated Cyclopentannulated Copolymers: Prominent Adsorbents of CO2, H2, and Iodine

“…The weight percentage (wt %) of I 2 taken up by PTB1 – PTB3 ranged from 340 to 400 wt % (Table ), with PTB3 , i.e., the copolymer bearing pyrene units, revealing the utmost iodine uptake of 400 wt % within 24 h (Table and Figure ). This sizable iodine uptake establishes PTB3 as an auspicious candidate as a result of its relatively straightforward synthesis when contrasted with other adsorbent materials documented in the literature (Table S3 of the Supporting Information). ,− The prominent iodine adsorption by PTB1 – PTB3 is believed to be caused by the strong π–π interaction between the electron-deficient iodine molecules and the electron-rich nitrogen atoms of Tröger’s base unit …”

“…30 To mitigate these challenges, conventional methods, like wet scrubbing and physical adsorption, have been extensively utilized to remove radioiodine vapors through filtration, 31,32 with the latter technique using porous materials promising to be advantageous as a result of its structural diversity, affordability, outstanding stability, and capability to control its porosity at the atomic and molecular levels. 33,34 Consequently, a myriad of iodine adsorbents have been made, which could be grouped into different categories, namely, organic, 35 inorganic, 36 and hybrid 37 polymer networks. Organic-based materials emerge as prominent candidates for effective capture of iodine as a result of their versatile synthesis, extensive porous network, and stability.…”

“…Conversely, the substantial release of radioactive nuclear waste, encompassing elements, such as 90 Sr, 99 Tc, 137 Cs, 129 I, 127 Xe, 85 Kr, poses a major drawback to nuclear power. , Of major concern are the gaseous radioactive iodine pollutants, namely, 131 I (half-life of 8 days) and 129 I (half-life of 15.7 million years), which perpetrate severe health issues for humans and are considered to have detrimental effects on the environment . To mitigate these challenges, conventional methods, like wet scrubbing and physical adsorption, have been extensively utilized to remove radioiodine vapors through filtration, , with the latter technique using porous materials promising to be advantageous as a result of its structural diversity, affordability, outstanding stability, and capability to control its porosity at the atomic and molecular levels. , Consequently, a myriad of iodine adsorbents have been made, which could be grouped into different categories, namely, organic, inorganic, and hybrid polymer networks. Organic-based materials emerge as prominent candidates for effective capture of iodine as a result of their versatile synthesis, extensive porous network, and stability. , …”

Iodine and Nickel Ions Adsorption by Conjugated Copolymers Bearing Repeating Units of Dicyclopentapyrenyl and Various Thiophene Derivatives

“…in 24 h (Table 1 and Figure 4), which promotes it as a promising candidate given several advantages. Namely, its simple synthesis and purification, especially when compared with several adsorbents reported in the literature, which require complex synthetic and/or isolation steps and whose iodine adsorption values are lower than that of TPP3 [50][51][52][53][54][55]. The thermal stability of conjugated polymers TPP1-3 were investigated by the thermogravimetric analysis (TGA), revealing their 10% weight loss temperatures in the range of 390-413 • C, which indicates their relatively high thermal stability (Figure S28 in the Supplementary Materials).…”

“…in 24 h (Table 1 and Figure 4), which promotes it as a promising candidate given several advantages. Namely, its simple synthesis and purification, especially when compared with several adsorbents reported in the literature, which require complex synthetic and/or isolation steps and whose iodine adsorption values are lower than that of TPP3 [50][51][52][53][54][55]. The adsorption mechanism of iodine by TPP1-3 was investigated by carrying out kinetic experiments using pseudo-first-order and pseudo-second-order kinetic models, as expressed by Equations ( 2) and ( 3) shown in the experimental part.…”