JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Yue Ji,Junwei Xu,Zirui Wang,Manman Ren,Yue Wu,Weiliang Liu,Jinshui Yao,Changbin Zhang,Hui Zhao
Zinc-iodine batteries (ZIBs) have attracted widespread attention because of their efficient capacity for ion transport and safety. However, the shuttle effect and physical properties of iodine species tremendously hinder their practical applications. Herein, we report a nitrogen-doped biomass litchi-shell derived porous carbon (marked as N -LPC) as the iodine host for ZIBs. The porous-rich structure of N -LPC is favorable for iodine loading and electron/ion transfers. Furthermore, the doping of heteroatomic nitrogen provides abundant anchoring sites to achieve strong interaction with iodine, thus the self-discharge can be suppressed effectively. Accordingly, the N -LPC/I 2 composite cathode exhibits a specific capacity of 127 mAh/g at 100 mA g −1 , as well as excellent rate capability and cycle stability. This study provides a strategy for discovering the cost-effective carbonaceous iodine host material.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 4
·1193-1202
·
IF 1.6
Zhao Yuting,Li Jie,Chen Long,Guo Qi,Li Lingyi,Chai Zhifang,Wang Shuao
Efficient removal of iodide (I − ) and iodate (IO 3 − ) from aqueous solution is highly desirable for waste disposal and remediation of radioiodine contamination. We report here a bifunctional anion exchange resin Purolite A530E for the effective I − /IO 3 − adsorption, which shows a priority anion-exchange affinity for I − (99%) over IO 3 − (9.7%). The maximum adsorption capacity for I − is 275.16 mg·g −1 fitted by the Langmuir isotherm model, much higher than most adsorbents. Furthermore, Purolite A530E exhibits great selectivity for I − over competing anions, which endows the resin with promising I − remediation that over 99% I − can be removed from simulated Hanford groundwater (HGW).
研究领域:
环境科学
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
WATER ENVIRONMENT RESEARCH
·
2022
·Vol. 94
·期 9
·e10788
·
IF 3.306
Binbin Shao,Yating Zhu,Jie Chen,Yimin Lin,Xiaohong Guan
During oxidative treatment of iodide (I − )-containing waters, I − is easy to be oxidized into hypoiodous acid (HOI) by various oxidants and the further reaction of HOI with organic compounds can lead to the formation of iodinated disinfection by-products (I-DBPs). Oxidation of HOI to iodate (IO 3 − ) or reduction of HOI to I − has been proposed to reduce the formation of I-DBPs. Because the reaction of HOI with sulfite proceeds rapidly, this study examined the fate of iodine and the formation of I-DBPs in Mn(VII)/sulfite process. Results showed that I − was oxidized to HOI but the further formation of IO 3 − was suppressed due to the fast reduction of HOI to I − by sulfite. The reactions of HOI with SO 3 2− and IO − with SO 3 2− are the major pathways with species-specific second-order rate constants determined to be 1.12 × 10 5 M −1 s −1 and 9.43 × 10 7 M −1 s −1 , respectively. The rapid reaction of HOI with sulfite plays an essential role in minimizing the formation of iodinated products in HOI- and phenol-containing solutions. The toxic risk analysis showed that the toxicity of the generated DBPs from Mn(VII)/sulfite pre-oxidation followed by chlorination only changed slightly. Practitioner Points The decay of I − was negligible in Mn(VII)/sulfite process. The rapid reaction of HOI with SO 3 2− resulted in the negligible generation of IO 3 − . Mn(VII)/sulfite process exerted slight influence on the formation of I-DBPs. Mn(VII)/sulfite process is promising for the pretreatment of I − -containing water.
研究领域:
环境科学
·
水处理工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hao Zhang,Guangyuan Chen,Miaomiao He,Kui Tang,Haoyuan Li,Xuanhao Liang,Yanhao Song,Chuan Tan,Ling Zhang,Tao Duan,Lin Zhu
Efficiently removing both CH 3 I and I 2 from radioactive exhaust streams remains a challeng. In this study, we successfully synthesized a bismuth-based organic ionic polymers (Bi@OIP) embedded with palladium, designed for the co-adsorption of CH 3 I and I 2 . The Bi@OIP material demonstrates high uptake capacities of 2257.7 mg g −1 for iodine vapor and 390.0 mg g −1 for methyl iodide. Palladium embedded within the polymer matrix catalyzes the reaction between CH 3 I and Bi, leading to the formation of BiI 3 , thus overcoming the inertness of traditional bismuth-based adsorbents toward methyl iodide. This bismuth-palladium synergistic effect significantly enhances the co-removal capabilities for both iodine and methyl iodide, positioning Bi@OIP as a promising candidate for the efficient capture of radioiodine and methyl iodide from exhaust gases.
研究领域:
材料科学
·
环境科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Long Liu,Wei Liu,Xiaoliang Zhao,Daimei Chen,Rongsheng Cai,Weiyou Yang,Sridhar Komarneni,Dongjiang Yang
Radioactive iodine isotopes that are produced in nuclear power plants and used in medical research institutes could be a serious threat to the health of many people if accidentally released to the environment because the thyroid gland can absorb and concentrate them from a liquid. For this reason, uptake of iodide anions was investigated on microrosette-like δ-Bi2O3 (MR-δ-Bi2O3). The MR-δ-Bi2O3 adsorbent showed a very high uptake capacity of 1.44 mmol g–1 by forming insoluble Bi4I2O5 phase. The MR-δ-Bi2O3 also displayed fast uptake kinetics and could be easily separated from a liquid after use because of its novel morphology. In addition, the adsorbent showed excellent selectivity for I– anions in the presence of large concentrations of competitive anions such as Cl– and CO32–, and could work in a wide pH range of 4–11. This study led to a new and highly efficient Bi-based adsorbent for iodide capture from solutions.
研究领域:
环境科学
·
材料科学
·
核医学
✓ 已验证
DOI
高影响因子
NEW CARBON MATERIALS
·
2018
·
IF 1.171
Hai-xiao Yang,He-xiang Han,Ji-tong Wang,Wen-ming Qiao,Li-cheng Ling
Novel high-carbon-yield pitches were prepared through the iodination of 1-methylnaphthalene (1-MNP) followed by dehydroiodination/polycondensation. 1-MNP was first iodinated by I 2 with the aid of I 2 O 5 , yielding mainly 1-iodo-4-MNP. Then, a thermal-dehydroiodination reaction at a comparatively low temperature of 130–180 o C was carried out to condense the iodinated products to obtain the pitches. The structures of the iodinated products and pitches were investigated by TG, GC-MS, 1H-NMR and FT-IR. Results indicated that the iodination selectivity ( S mb) reached 96.4% when 0.75 mol I 2 and 0.18 mol I 2 O 5 reacted with 1 mol 1-MNP at 60 o C for 24 h in acetic acid. Ring-hydrogenation products (tetralin, 5-methyltetralin) and methyl migration products (2-MNP, dimethylnaphthalene and trimethylnaphthalene) were found in the pitches by analyzing their methanol-soluble fractions. Dehydroiodination substantially increased the degree of polymerization and carbon yield of the pitches. The pitches exhibited high polymerization degrees (toluene soluble fraction less than 12 wt%), high carbon yields (54–66 wt%) and complicated 1-MNP molecular assembly patterns including α-α′, α-β′, β-β′, depending on dehydroiodination temperature and time. The iodination/dehydroiodination approach is simple, mild and clean for preparation of high quality pitches for high performance carbon materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Gen Li,Yang Huang,Jing Lin,Chao Yu,Zhenya Liu,Yi Fang,Yanming Xue,Chengchun Tang
Iodine has critical roles in the chemical processes within a living organism and has wide applications in chemical engineering, medicines, material sciences etc. On the other hand, the radioactive iodine could be one of the biggest hidden dangers during the nuclear accidents in the modern nuclear industry. Capture and storage of iodine is of great importance for both applications of iodine and preventing the harmful leakage of radioactive iodine. Herein, we report our efforts in utilization of monolithic boron nitride (BN) foams in capture and reversible storage of iodine in both gaseous and liquid environment. The BN foam consisting of interwoven one-dimensional (1D) porous BN microfibers inherits the merits from h-BN such as high thermal stability and chemical inertness, thus showing great resistance to harsh environments; additionally, the BN foam possesses high porosity and large specific surface areas, which make it reliable as decent adsorbents. The high internal connectivity feature, as well as the presence of a large amount of iodine adsorption sites such as π bonds and functional groups, result in the high iodine uptake capacity. Our study indicates that the adsorption amount of violate iodine by BN foams can achieve ∼212 wt%. The adsorption of iodine by BN foams in n-hexane solution follows the pseudo-second-order model best, and the adsorption isotherms are more accordant with the Freundlich model. In addition, owing to the great chemical stability of the BN foams, the desorption of iodine and recovery of the BN foam adsorbents can be achieved by either washing the foams in ethanol solution or directly heat treatment in N 2 atmosphere at 800 °C for 2 h.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2020
·
IF 14.588
Chuang Sun,Xinlei Shi,Yabo Zhang,Jiajie Liang,Jie Qu,Chao Lai
Lithium-iodine (Li-I2) batteries are promising candidates for next-generation electrochemical energy storage systems due to their high energy density and the excellent kinetic rates of I2 cathodes. However, dissolution of iodine and iodide has hindered their widespread adoption for practical applications. Herein, a Ti3C2Tx MXene foam with a three-dimensional hierarchical porous architecture is proposed as a cathode-electrolyte interface layer in Li-I2 batteries, enabling high-rate and ultrastable cycling performance at a high iodine content and loading mass. Theoretical calculations and empirical characterizations indicate that Ti3C2Tx MXene sheets with high metallic conductivity not only provide strong chemical binding with iodine species to suppress the shuttle effect but also facilitate fast redox reactions during cell cycling. As a result, the Li-I2 battery using a cathode with 70 wt % I2 cycled stably for over 1000 cycles at a rate of 2 C, even at an ultrahigh loading mass of 5.2 mg cm–2. To the best of the authors’ knowledge, this is the highest reported loading at such a high iodine content. This work suggests that using a Ti3C2Tx MXene interface layer can enable the design and application of high-energy Li-I2 batteries.
研究领域:
材料科学
·
电化学能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Xiaojiang Chen,Lielin Wang,Congcong Ding,Hua Xie,Hao Zou,Jiaming Deng,Zhu Liu,Junping Shi,Yun Ding
Radioactive iodine anion wastewater is generated during the operation of nuclear facilities. Efficiently adsorbing and removing radioactive iodine is crucial for the sustainable development of nuclear energy. A potential adsorbent, nano silver-loaded activated carbon fiber (Ag@ACF), was prepared through hydrothermal synthesis and high-temperature vacuum reduction for the efficient removal of iodide anions. The as-prepared Ag@ACF composite has been comprehensively characterized, with silver nanoparticles uniformly distributed on the surface and pore walls of the Ag@ACF, enhancing the adsorption sites for iodine anions. The adsorption performance of Ag@ACF towards iodine anions was evaluated through column and batch experiments, varying silver concentration, adsorbent dosage, pH, contact time, and competing anions. Ag@ACF demonstrated high water stability and a low desorption rate of iodine anions. At a pH of 2, Ag@ACF exhibited a maximum adsorption capacity for iodine anions of 372 mg/g, surpassing most other adsorbents and showing promise for engineering applications. Adsorption kinetics and isotherm analysis indicated that the adsorption process of Ag@ACF primarily involved monolayer homogeneous chemisorption, resulting in the formation of stable AgI. These results suggest that Ag@ACF could serve as a potential adsorbent for removing iodine from radioactive wastewater.
研究领域:
环境科学
·
核能工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2022
·Vol. 66
·期 2
·556-566
·
IF 8.64
Gong Zongshuai,Song Chunlai,Bai Chong,Zhao Xiaomeng,Luo Zhiqiang,Qi Gaocan,Liu Xizheng,Wang Cheng,Duan Yueqin,Yuan Zhihao
Aqueous Zn-I 2 batteries (AZIBs) are highly desirable for green energy-storage technologies, but their development was greatly limited by their unsatisfactory energy densities. Herein, we report high-energy-density rechargeable AZIBs achieved by anchoring high-mass iodine to a distinctive N-doped hierarchical porous carbon (NHPC) material with large micropore volume and rich N-doping. The NHPC combined strong iodine confinement caused by the micropore and powerful chemisorption of iodine species with pyridine-N doping, which enabled high loads of iodine up to 61.6 wt%. Notably, density functional theory calculations and experimental studies showed that abundant pyridine-N active sites promoted electron transfer, and the interconnected micro-mesoporous structure facilitated the Zn-ion diffusion to synergistically promote the redox kinetics of AZIBs. The high content of iodine-loading cathode exhibited a high capacity of 219.3 mA h g −1 at 1.0 C, indicating excellent rate capability and superior cycling stability with a low capacity decay of 0.00147% per cycle within 10,000 cycles at 5.0 C. In addition, a preliminary device assembled with three batteries in series provided a high energy density of up to 72.6 W h kg −1 calculated by the total mass of the battery, which is almost two times that of the commercial aqueous lead-acid and Ni-Cd batteries. The high energy density and long cycle life of this aqueous battery indicate its great application potential in large-scale energy storage.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Cuicui Li,Haocheng Li,Xiuyun Ren,Liang Hu,Jiaojiao Deng,Jinhan Mo,Xiaoqi Sun,Guohua Chen,Xiaoliang Yu
The multielectron conversion electrochemistry of I–/I0/I+ enables high specific capacity and voltage in zinc–iodine batteries. Unfortunately, the I+ ions are thermodynamically unstable and are highly susceptible to hydrolysis. Current endeavors primarily focus on exploring interhalogen chemistry to activate the I0/I+ couple. However, the practical working voltage is below the theoretical level. In this study, the I0/I+ redox couple is fully activated, and I+ is efficiently stabilized by a chelation agent of cost-effective urea in the conventional aqueous electrolyte. A record-high plateau voltage of 1.8 V vs Zn/Zn2+ has been realized. Theoretical calculations combined with spectroscopy studies and electrochemical tests reveal that the coordination between the electron-deficient I+ and the electron-rich O and N atoms in urea molecules is thermodynamically favorable for I0/I+ conversion and inhibits the self-disproportionation of I+, which in turn promotes rapid kinetics and excellent reversibility of I0/I+. Moreover, urea decreases the water activity in the electrolyte by forming hydrogen bonds to further suppress the hydrolysis of I+. Accordingly, a high specific capacity of 419 mAh g–1 is delivered at 1C, and 147 mAh g–1 capacity is retained after 10,000 cycles at 5C. This work offers effective insights into formulating halogen-free electrolytes for high-performance aqueous zinc–iodine batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Qian Zhao,Xin Li,Guangyuan Chen,Zeru Wang,Chuan Tan,Cheng Liu,Hao Zou,Jing Ma,Lin Zhu,Tao Duan
Effective capture of radioactive iodine from nuclear fuel reprocessing is of great importance for public safety as well as the secure utility of nuclear energy. In this work, a hydrophobic nanosheet silicalite-1 (NSL-1) zeolite with an adjustable size was developed for efficient iodine (I 2 ) and methyl iodide (CH 3 I) adsorption. The optimized all-silica zeolite NSL-1 exhibits an excellent I 2 uptake capacity of 553 mg/g within 45 min and a CH 3 I uptake capacity of 262 mg/g within 1 h. Benefiting from the reduced thickness and enhanced porosity, microporous NSL-1 possesses enhanced iodine adsorption capacity and fast adsorption kinetics , which is a considerable high value among inorganic materials . Unexpectedly, the remarkable characters of high hydrophobicity , acid-resistance and anti-oxidation endow it a higher iodine uptake capacity than traditional aluminosilicate zeolites. More importantly, the high uptake selectivity toward I 2 possessed by NSL-1 owing to its hydrophobic skeleton under simulated dynamic conditions. The low cost, facile and scalable synthesis of NSL-1 further highlights great prospects for applications in the nuclear industry. This work provides useful insights for designing efficient adsorbents for iodine capture .
研究领域:
材料科学
·
核能工程
·
环境科学
✓ 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）