CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Guangyuan Chen,Linzhen Wu,Zeru Wang,Ruixi Liu,Chuan Tan,Yi Tan,Yawen Liu,Miaomiao He,Hao Zhang,Yikun Huang,Jiongzhi Zhu,Tao Duan,Lin Zhu
The capture of radioactive gaseous iodine is essential for the sustainable development of nuclear energy and the long-term safe supply of nuclear fuel. However, the presence of nitrogen oxides in the exhaust gas generated during spent fuel reprocessing poses significant challenges to the stability of iodine adsorbents. It is crucial to consider the impact of NOx on the structure and adsorption performance of the materials. We report here the development of an aluminum-based metal–organic framework (MOF), CAU-1, engineered for efficient iodine capture. Synthesized through a cost-effective and straightforward method, CAU-1 exhibits excellent structural stability and robust adsorption performance, with a maximum iodine vapor adsorption capacity of 1277.18 mg/g at 130 °C and methyl iodide adsorption capacity of 533.10 mg/g, highlighting its potential for efficient iodine vapor removal. Notably, CAU-1 retains its structural integrity and iodine adsorption performance even in the presence of 5 % NO 2 , maintaining high adsorption capacities for I 2 (1129.41 mg/g) and CH 3 I (436.79 mg/g). Mechanistic analysis revealed the key role of the –NH 2 group in the iodine adsorption process. Additionally, co-adsorption studies with I 2 and NO 2 showed that CAU-1 can still capture iodine in the form of both I 2 and I 3 - in the presence of NO 2 . This study illustrates the potential of CAU-1 as an effective industrial adsorbent for removing iodine from NO 2 -containing gas streams.
研究领域:
材料科学
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核能工程
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环境科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
·
2017
·
IF 4.208
Lu Wang,Deyang Kong,Yuefei Ji,Junhe Lu,Xiaoming Yin,Quansuo Zhou
Formation of halogenated disinfection by-products (DBPs) in sulfate radical-based advanced oxidation processes (SR-AOPs) have attracted considerable concerns recently. Previous studies have focused on the formation of chlorinated and brominated DBPs. This research examined the transformation of I − in heat activated PS oxidation process. Phenol was employed as a model compound to mimic the reactivity of dissolved natural organic matter (NOM) toward halogenation . It was found that I − was transformed to free iodine which attacked phenol subsequently leading to iodinated DBPs such as iodoform and iodoacetic acids . Iodophenols were detected as the intermediates during the formation of the iodoform and triiodoacetic acid (TIAA). However, diiodoacetic acid (DIAA) was formed almost concomitantly with iodophenols. In addition, the yield of DIAA was significantly higher than that of TIAA, which is distinct from conventional halogenation process. Both the facts suggest that different pathway might be involved during DIAA formation in SR-AOPs. Temperature and persulfate dose were the key factors governing the transformation process. The iodinated by-products can be further degraded by excessive SO 4 − and transformed to iodate . This study elucidated the transformation pathway of I − in SR-AOPs, which should be taken into consideration when persulfate was applied in environmental matrices containing iodine.
研究领域:
环境科学
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化学
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DOI
高影响因子
Journal of Chemistry
·
2023
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IF 3
Tong Chen,Wanjing Cui,Ziwei Bi,Yafei Guo,Guoliang Zhu,Xiuyun Pan,Zhiqiang Cui,Zhen Yang,Tianlong Deng
The analysis of iodine content in kelp is mainly focused on determining total iodine content, which lacks a rapid and sensitive analytical method for iodine species corresponding to iodate, iodide, monoiodotyrosine (MIT), and diiodo-tyrosine (DIT). Based on exploring the pretreatment methods of enzymatic hydrolysis of kelp, a rapid determination method of high-performance liquid chromatography and inductively coupled plasma mass spectrometry (HPLC-ICP-MS) for different iodine species existed in kelp samples was established. The pretreatment method is trypsin hydrolysis of kelp samples treated at 50°C for 10 hours, then the extraction solution was obtained by centrifugation, and filtration was proved for the first time. A high-efficiency separation anion-exchange column (Dionex IonPac AS-14) for iodate, iodide, MIT, and DIT with 0.1 mol·L−1(NH4)2CO3 solution at pH = 9 as a mobile phase, a flow rate of 0.8 mL·min−1 for the first 1500 s, and 1.2 mL·min−1 for the last 1800 s was confirmed. The linear ranges of the standard calibrations on four iodine species are 1.0–150 μg·L−1, and the detection limits are 1.62, 1.02, 1.59, and 2.55 μg·L−1, respectively, while the RSD values of four iodine species are all less than 2%. Under the optimized conditions, the proposed method was successfully applied for the speciation analysis of iodine in kelp samples.
研究领域:
分析化学
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环境科学
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海洋生物学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Xuanhao Liang,Guangyuan Chen,Hao Zhang,Ling Zhang,Tao Duan,Lin Zhu
Ti-based MOFs exhibit ultra-high stability in radioactive waste gases containing nitrogen oxides (NO X ) and are effective in capturing radioactive iodine. In this study, NH 2 -MIL-125 was synthesized via a one-pot solvothermal method and its adsorption performance for iodine was investigated using batch adsorption experiments, the stability of materials was tested by simulating post-processing conditions. The results indicated that NH 2 -MIL-125 had a maximum iodine adsorption capacity of 1.61 g/g at 75 ℃ and reached adsorption equilibrium within 60 min, and the adsorption capacity of methyl iodine reached 776.9 mg/g. The material also exhibited excellent stability and iodine adsorption performance in the presence of NO X . After soaking in NO 2 for 24 h, its structure remained stable and the adsorption capacity for iodine remained at 231.5 mg/g. The excellent co-adsorption performance of NH 2 -MIL-125 on iodine and NO X was attributed to the synergistic effects of Ti-OH groups and amino functional groups. These findings provide a reference for the capture of radioactive iodine and also demonstrate the potential of NH 2 -MIL-125 for iodine capture during spent fuel reprocessing .
研究领域:
材料科学
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环境科学
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核能工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
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IF 7.312
Pengwei Yan,Zhonglin Chen,Shuyu Wang,Yanchi Zhou,Jimin Shen,Shengxin Zhao,Lei Yuan,Weiqiang Wang,Xiaotong Xu,Xinwei Zhu,Jing Kang
The formation of iodinated by-products during the chemical oxidation process for organic compounds contaminated water has gained increasing attention. Iodinated by-products are more genotoxic, cytotoxic and mutagenic than those of chlorine and bromine analogs. It was reported that the oxidation process of iodinated X-ray contrast media (ICM) could generate iodinated by-products. This study investigated the generation of iodinated by-products during catalytic ozonation of iohexol (one of wide detected ICM). The formation of iodoform (IF) and monoiodoacetic acid (MIAA), and the degradation kinetics of iohexol were compared in different oxidation systems. The effect of various factors, including the iohexol concentration, ozone concentration, HA concentration and solution pH on iodinated by-products generation was evaluated. Additionally, the fate of iodine was investigated by the mass balance calculation. The generated concentrations of I-THMs species with one iodide atom were far higher than those of species with more iodine atoms in the catalytic system at the coexistence of Cl − and Br − . The generation of I-THMs in actual water was relatively low and the normalized value of I-THMs/DOC (μg/mg) had no significant difference. The formation mechanism of high molecular weight iodine-containing by-products included cleavage of the side chain, H-abstraction, substitution iodine for chlorine or bromine and amide oxidation.
研究领域:
环境科学
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毒理学
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DOI
高影响因子
Processes
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2024
·Vol. 12
·期 8
·1768
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IF 2.8
Jinxu Zhang,Bo Ling,Yong He,Yanqun Zhu,Zhihua Wang
Hydrogen energy, as a clean, renewable, and high-calorific energy carrier, has garnered significant attention globally. Among various hydrogen production methods, the thermochemical iodine–sulfur (I-S) cycle is considered the most promising due to its high efficiency and adaptability for large-scale industrial applications. This study focuses on the distillation characteristics of the HIx(HI–I2–H2O) solution within the I-S cycle, which is crucial for achieving the high-concentration HI necessary for efficient hydrogen production. Previous methods, including phosphoric acid extraction–distillation and reactive distillation, have addressed azeotrope issues but introduced complexities and equipment demands. This research constructs a hypo-azeotropic HIxsolution distillation experimental system and uses the Aspen Plus v14 software to optimize distillation parameters. By analyzing the effects of feed stage, reflux ratio, and feed temperature, the study provides essential data for improving distillation efficiency and supports the scale-up of I-S cycle technology. The findings indicate that optimal distillation is achieved with a feed position at 1/3 column height, a reflux ratio of 1.4, and a feed temperature near the boiling point, enhancing the feasibility of industrial hydrogen production via the I-S cycle.
研究领域:
化学工程
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能源科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Xinqi Liu,Huiling Yuan,Qian Zheng,Bingyuan Huang,Fang Liao,Hejun Gao,Hongquan Fu,Juan Zhang,Yunwen Liao
The effective capture and storage of radioactive iodine is of great significance to the safe use of nuclear energy. In this study, nitrogen- and oxygen-doped carbon nanotubes acted as effective iodine capture agents in a low concentration of iodine solution of approximately 100 mg L −1 . The iodine uptake capacity is proportionate to hydroxy-functional groups as oxygen species and graphitic nitrogen as nitrogen species, respectively, rather than defects and the specific surface area of carbon nanotubes. The essential adsorption activity of oxygen-doped carbon nanotubes is more than 2.5 times that of nitrogen-doped carbon nanotubes, indicating oxygen-doped carbon nanotubes as a potential carbon material in practical applications for the adsorption of iodine. Theoretical study further deepened the understanding of the iodine adsorption sites on carbon nanotubes. This work provided a new method for the design and synthesis of high-performance radioactive iodine solid adsorbents in the future.
研究领域:
材料科学
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环境科学
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核能安全
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Lin Zhou,Na Wang,Yunzhen Chang,Sheng Zhu,Ying Zhang,Wenjing Hou,Yun Zhao,Gaoyi Han
Currently, aqueous rechargeable zinc-iodine (Zn I 2 ) batteries are recognized as promising new energy storage devices due to their significant advantages, including large theoretical capacity, rapid charging and discharging capabilities and high safety. However, the shuttle effect caused by the soluble polyiodide ions leads to low utilization of active iodine and coulombic efficiency (CE). Herein, we use a high-concentration iodine solution as the oxidizing agent to synthesize polypyrrole (PPy/I 2 ) for the first time. Compared with the PPy polymerized by using FeCl 3 as oxidant (PPy/FeCl 3 ), the Zn I 2 battery based on PPy/I 2 cathode demonstrates an extended cycle life (84.2 % after 3800 cycles at 2.0 A g −1 ), high CE (>98 % at 1.0 A g −1 ), and minimal self-discharge (75 % after rest 12 h). The results based on electrochemical testing and characterization indicate that the exceptional performance of PPy/I 2 is primarily attributed to the early insertion of iodine species during the preparation process. This insertion creates reserved space for polyiodide ions, and the positive charge on the main chains of PPy effectively restricts their shuttle during battery operating. Furthermore, due to the ideal shuttle inhibition of PPy/I 2 , the Zn corrosion caused by polyiodide ions is effectively inhibited. The detailed characterizations explore the charge storage mechanism of PPy/I 2 . This research has guiding significance for improving the performance of PPy-based Zn I 2 batteries.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
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2022
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IF 2.655
Sheng Liu,Yiyang Zeng,Ai Zhang,Yuxin Song,Yuran Ni,Jiamao Li,Fangting Chi,Chengjian Xiao
Due to the rapid diffusion of radioactive iodine, the demand for safe and efficient capture and storage of radioactive iodine is increasing worldwide. The use of porous carbon materials to capture iodine has aroused great interest. This work prepared porous carbon materials derived from polymetallic oxides of the zeolitic imidazolate framework (ZIF) by pyrolysis at 1000 °C. The carbon materials (CZIF-1000) have a high specific surface area of about 1110 m 2 /g and a total pore volume of 0.92 cm 3 /g. Adsorption studies have shown that the CZIF-1000 had significant adsorption performance for iodine, and the adsorption capacity can reach 790.8 mg/g at 8h. The potential mechanism of adsorption is that the carbonization causes the charge-transfer interaction and pore size distribution. Compared with the conventional adsorbents, the adsorbents showed faster kinetics and high extraction capacity for iodine. This experiment provides an effective method for designing a highly efficient adsorbent for iodine and broadens the ideas for developing new iodine extraction adsorbents.
研究领域:
材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Sheng Liu,Yiyang Zeng,Jun Liu,Jiamao Li,Hao Peng,Hui Xie,Hao Zou,Chengjian Xiao,Xiaohui Hua,Jingliang Bao,Liang Xian,Yuanli Li,Fangting Chi
The capturing and storage of iodine from nuclear waste through secure and advantageous techniques are significant. In this work, a novel bismuth-based porous carbon material referred to as Bi@MVF is elaborately synthesized employing a dipping-reduction technique to seize iodine-129 ( 129 I), in which bismuth particles are uniformly embedded and allotted on the porous carbon network as multiple active sites. Accordingly, Bi@MVF lets in a highly-efficient iodine absorption potential of up to 1560 mg/g after publicity to iodine at 120 ℃ for 4 h, superior to most standard iodine adsorbents. The excessive adsorption kinetics of these Bi@MVF adsorbents is typically attributed to the specific porous carbon substrates' full-size particular surface area and the adsorbent’s synergistic effect. An in-depth perception of the iodine adsorption mechanism exhibits that the chemical adsorption turns into a powerful mechanism via the reaction between bismuth and iodine to structure a steady section BiI 3 . Moreover, an easy post-treatment system for these Bi@MVF adsorbents is adopted to gain the greater corrosion-resistant iodine-binding segment Bi 5 O 7 I, attaining a nominal iodine leaching rate. Therefore, the designed Bi@MVF will be a tremendous 129 I stabilizer, and we will contribute a new approach for customizing new iodine adsorbents with excessive adsorption doses.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xuemei Li,Yang Shen,Fangyu Jin,Jingbo Zhang,Yanyan Yang,Xiaoshu Qu
Nuclear waste management and nuclear energy generation require the proper disposal of 129 I and 131 I, which are radioactive isotopes of iodine. For recognition of different types’ iodine, a magnetic poly (ionic liquid)s (Fe 3 O 4 @SiO 2 -MPS-PILs) was formed by the selected imidazole ionic liquid monomer and core–shell Fe 3 O 4 @SiO 2 -MPS via free radical polymerization. The resulting adsorbent containing plenty of imidazole N-heterocycle units, benzene rings, and ionic bonds in the backbones was suitable for simultaneously adsorbing iodine molecules and iodide ions. The adsorption mechanisms for iodine in cyclohexane and iodide ions from aqueous solution were based on charge transfer and ion exchange mechanisms, respectively. The adsorption equilibrium for iodine in cyclohexane was attained at 12 h, and the kinetics of iodine adsorption closely followed the pseudo-second-order model. Iodine adsorption on Fe 3 O 4 @SiO 2 -MPS-PILs was best described by Langmuir model with a maximum iodine adsorption capacity of approximately 714.29 mg g −1 . Iodide ions adsorption was best explained with Freundlich model and a maximum adsorption capacity of 335.80 mg g −1 was achieved in an iodide solution with a 500 mg L –1 concentration. Notably, Fe 3 O 4 @SiO 2 -MPS-PILs retained over 90 % of its original adsorption performance after the 5th cycle. This work proves that the adsorbent Fe 3 O 4 @SiO 2 -MPS-PILs was efficient and recyclable, and has good application prospects in the practical treatment of iodine and iodide.
研究领域:
环境科学
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材料科学
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核能工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhaoyu Zhang,Boya Weng,Zhang Hu,Zhenyu Si,Lefan Li,Ziming Yang,Yu Cheng
Bacterial infections have always been a major threat to public health, and the development of effective antibacterial substances from natural polymers is crucial. 2-Aminoisonicotinic acid (AN) was grafted onto chitosan by 1-ethyl-(3-dimethylaminopropyl)carbodiimide-mediated coupling reactions, and then modified chitosan‑iodine (CSAN-I) complexes were prepared by solvent-assisted grinding. The samples were characterized using ultraviolet-visible spectroscopy, Fourier transform infrared spectroscopy , Raman spectroscopy , proton nuclear magnetic resonance spectroscopy , and X-ray diffraction, confirming that CSAN-I complexes had been successfully prepared. Thermogravimetric (TG) analysis indicated that the chemical modification of chitosan and iodine complexation reduced the thermal stability ; X-ray photoelectron spectroscopy (XPS) analysis revealed that 81 % of the iodine in CSAN-I complex was in the form of triiodide ions. The iodine contents of three CSAN-I complexes (CSAN-I-1, CSAN-I-2 and CSAN-I-3) were 1.59 ± 0.22 %, 3.18 ± 0.26 %, and 5.56 ± 0.41 %, respectively. The antibacterial effects were evaluated in vitro, and the results indicated that CSAN-I complexes had strong antibacterial activities against both E. coli and S. aureus . In particular, CSAN-I-3 exhibited the best antibacterial effect. In addition, CSAN-I-3 was nontoxic to L929 cells with good cytocompatibility. Therefore, CSAN-I complexes can be considered as promising candidates for wound management in clinical applications.
研究领域:
生物材料学
·
微生物学
·
药剂学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）