2019
DOI: 10.1039/c9dt01080g
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Complex formation between UO22+and α-isosaccharinic acid: insights on a molecular level

Abstract: This study elucidates the mutual influence of the interaction of ISA with UO22+ on their speciation, based on spectroscopic techniques.

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Cited by 10 publications
(4 citation statements)
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“…] n stoichiometry, as suggested for U(VI) [23]. The log β°1 42 values for O20 and O201 in Table 1 are a few orders of magnitude smaller than those for GLU and ISA.…”
Section: -mentioning
confidence: 64%
“…] n stoichiometry, as suggested for U(VI) [23]. The log β°1 42 values for O20 and O201 in Table 1 are a few orders of magnitude smaller than those for GLU and ISA.…”
Section: -mentioning
confidence: 64%
“…Additionally, 1 H NMR spectra of recycled TPA after alkaline hydrolysis in NaOH solution (0.5 and 1.0 M) showed peaks around 3.5 ppm (Figure S7), characteristic for protons of isosaccharinic acid. 40 The decreased viscosities and the appearance of isosaccharinic acid in the products indicate the occurrence of the peeling reaction in a concentrated alkaline solution, which is consistent with low cotton recovery rates observed in Figure 2b.…”
Section: ■ Results and Discussionmentioning
confidence: 99%
“…In contrast, the intrinsic viscosities of recycled cotton by hydrolysis without a catalyst in NaOH solution (0.5, 1.0, and 5.0 M) were only 42, 47, and 60% of that of the original one, respectively (Figure S6). Additionally, 1 H NMR spectra of recycled TPA after alkaline hydrolysis in NaOH solution (0.5 and 1.0 M) showed peaks around 3.5 ppm (Figure S7), characteristic for protons of isosaccharinic acid . The decreased viscosities and the appearance of isosaccharinic acid in the products indicate the occurrence of the peeling reaction in a concentrated alkaline solution, which is consistent with low cotton recovery rates observed in Figure b.…”
Section: Resultsmentioning
confidence: 99%
“…As no precipitation was visually observed in the solution before measurement, Pd is expected to be present in the solution forming Pd-ISA complexes. The spectrum of the ISA stock solution has many characteristic peaks; however, we focused on the peaks at 1583, 1413, and 1000-1150 cm − 1 , corresponding to the asymmetric stretching vibration of the carboxylate group (ν as (COO − )), symmetric stretching vibration of the carboxylate group (ν s (COO − )), and binding vibration of C-OH (alcohol) (ν(C-OH)), respectively [15].…”
Section: Ftir Analysis Of Isa In the Presence Of Pdmentioning
confidence: 99%