Aminotriazole isomers modified cellulose microspheres for selective adsorption of U(VI): Performance and mechanism investigation

Wen, Di; Dong, Zhen; Ao, Yinyong; Xie, Kangjun; Zhai, Maolin; Zhao, L.

doi:10.1016/j.carbpol.2021.117666

Cited by 36 publications

(9 citation statements)

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“…Table 1 summarizes U(VI) adsorption performances of Cel-AO-4 and Cel-AO/GO-4 by the RIGP method and some other amidoxime-modified cellulose adsorbents with other methods reported in recent years. 7,10,11,13,46,47 Although the calculated q max values of MCC/PAA(AO) are higher, -AO contributes little in MCC/PAA(AO). The theoretical maximum adsorption capacities of Cel-AO-4 and Cel-AO/GO-4 by the RIGP method are higher than most of the amidoxime-functionalized cellulose adsorbents by other methods, which further validates the advantages of RIGP as a promising modification method.…”

Section: ■ Results and Discussionmentioning

confidence: 97%

“…Cellulose, the most abundant natural organic polymer with nontoxic, renewable, biodegradable, and other unique properties, has been proven to be one of the most promising adsorbents for uranium removal. − To date, a series of cellulose-based uranium adsorption materials with different functional ligands, such as amidoxime, , phosphate, , carboxyl, and amino, have been utilized in uranium adsorption. Among them, amidoxime is the most widely reported, for the fact that the electron donors in the amidoxime structure allow the adsorbents with high chelating affinity and selectivity toward UO 2 2+ .…”

Section: Introductionmentioning

confidence: 99%

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RIGP-Induced Surface Modification of Cellulose for the Preparation of Amidoxime-Modified Cellulose/Graphite Oxide Composites with Enhanced Uranium Adsorption

Zhang,

Li,

Tian

et al. 2024

Ind. Eng. Chem. Res.

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Surface modification plays an important role in the design and fabrication of high-performance cellulose in many fields, especially in uranium adsorption. However, the high crystallinity of cellulose makes surface modification difficult to some extent, resulting in an impaired application performance. Herein, a radiation-initiated graft polymerization (RIGP) method is utilized to regulate the crystallinity of cellulose and improve the surface modification capability. To compensate for the weakening of the cellulose structure caused by the reduced crystallinity, graphite oxide (GO) powder is utilized as the scaffold, and the as-obtained amidoxime-modified cellulose/graphite oxide (Cel-AO/GO) composites are employed for U(VI) removal. The crystallinity of the cellulose can be effectively decreased by increasing irradiation doses, and the reduced crystallinity is proven to increase the amidoxime modification degree of cellulose. It is found that the sufficient surface amidoxime sites caused by the reduced crystallinity as well as the intrinsic carboxyl group of GO contribute synergistically to the efficient U(VI) adsorption performance. The maximum theoretical adsorption capacity of U(VI) can reach 237.5 mg•g −1 with ultrafast adsorption kinetics (90% removal in just 1 min). The adsorption process is well fitted by a pseudo-second-order and Langmuir isotherm. After eight adsorption−desorption cycles, the absorbent still retains 85% removal. These results indicate that the strategy of crystallinity-regulation by the RIGP method will be a valid way to develop high-performance cellulose-based U(VI) adsorbents.

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Section: ■ Results and Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

RIGP-Induced Surface Modification of Cellulose for the Preparation of Amidoxime-Modified Cellulose/Graphite Oxide Composites with Enhanced Uranium Adsorption

Zhang,

Li,

Tian

et al. 2024

Ind. Eng. Chem. Res.

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“…53 Because of the abundance of OH − groups, cellulose has been the subject of extensive study. [54][55][56][57][58] There are two primary classes of cellulose modication techniques. Sulfation, 59 etherication, 60 carbanilation, 61 silylation, 62 esterication, 63 functional groups that are linked directly to the OH radical of cellulose molecules, a process known as a direct modication.…”

Section: Cellulosementioning

confidence: 99%

“…53 Because of the abundance of OH − groups, cellulose has been the subject of extensive study. 54–58…”

Section: Polysaccharides As a Precursor Of Biomaterialsmentioning

confidence: 99%

Emerging environmentally friendly bio-based nanocomposites for the efficient removal of dyes and micropollutants from wastewater by adsorption: a comprehensive review

Al-Gethami,

Qamar,

Shariq

et al. 2024

RSC Adv.

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“…A total of 88.13% of the original adsorption capacity was maintained after five cycles of the regeneration process. Aminotriazole isomer-modified cellulose microspheres with high nitrogen content showed potential affinity for U 6+ ( Wen et al, 2021 ). The microspheres possessed good adsorption capacity, selectivity, and reusability for U 6+ .…”

Section: Adsorbents Produced By Modification and Functionalization Of...mentioning

confidence: 99%

Multifunctional Cellulose and Cellulose-Based (Nano) Composite Adsorbents

Shi

Lang

Zhou

et al. 2022

Front. Bioeng. Biotechnol.

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In recent years, faced with the improvement of environmental quality problems, cellulose and cellulose-based (nano) composites have attracted great attention as adsorbents. In this review article, we first report the recent progress of modification and functionalization of cellulose adsorbents. In addition, the adsorbents produced by the modification and functionalization of carboxymehyl cellulose are also introduced. Moreover, the cellulose-based (nano) composites as adsorbents are reviewed in detail. Finally, the development prospect of cellulose and cellulose-based (nano) composites is studied in the field of the environment. In this review article, a critical comment is given based on our knowledge. It is believed that these biomass adsorbents will play an increasingly important role in the field of the environment.

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Aminotriazole isomers modified cellulose microspheres for selective adsorption of U(VI): Performance and mechanism investigation

Cited by 36 publications

References 50 publications

RIGP-Induced Surface Modification of Cellulose for the Preparation of Amidoxime-Modified Cellulose/Graphite Oxide Composites with Enhanced Uranium Adsorption

RIGP-Induced Surface Modification of Cellulose for the Preparation of Amidoxime-Modified Cellulose/Graphite Oxide Composites with Enhanced Uranium Adsorption

Emerging environmentally friendly bio-based nanocomposites for the efficient removal of dyes and micropollutants from wastewater by adsorption: a comprehensive review

Multifunctional Cellulose and Cellulose-Based (Nano) Composite Adsorbents

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