SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Libo Yang,Hao Fu,Lei Dong,Mingyue Ma,Yuxiang Deng,Hanyu Wu,Yuezhou Wei,Shunyan Ning,Xinpeng Wang
The effective capture of radioiodine vapor is of paramount importance in mitigating environmental radiation risks associated with spent fuel reprocessing, as well as for thyroid diagnosis and treatment. However, adsorbents used for iodine vapor capture are susceptible to the adverse effects of water vapor, leading to significant reductions in adsorption efficiency. This study presents the design and synthesis of polyimide (PI) aerogels integrated with in situ-grown SnS 2 through a hydrothermal approach. The shape of SnS 2 /PI aerogels can be adjusted via mold manipulation, while also possessing desirable mechanical strength. The SnS 2 /PI-2 aerogel exhibits a remarkable maximum adsorption capacity of 1167 mg/g in a dry environment, with only a marginal 12.4 % decrease observed in a high-humidity environment (74 % relative humidity, R.H.), as assessed by batch experiments. During application in the fixed-bed column, the SnS 2 /PI-2 aerogel demonstrates a significant adsorption capacity of 1070 mg/g at 75 °C. Monitoring conducted for 7 consecutive days post-adsorption confirms the absence of iodine release. This is attributed to the reduction of captured I 2 by the SnS 2 /PI-2 aerogel, forming the stable crystal SnI 4 , thereby preventing its release. Therefore, the SnS 2 /PI-2 aerogels exhibit excellent humidity resistance, thermal stability, and mechanical properties, rendering them highly suitable for capturing radioiodine vapor under complex conditions. This work offers insights into developing efficient aerogel adsorbents for treating radioactive iodine exhaust gases with high humidity in fixed-bed columns or decay tanks.
研究领域:
材料科学
·
环境科学
·
核技术
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DOI
高影响因子
IEEE SENSORS JOURNAL
·
2024
·
IF 4.3
Jin Zhu,Yi He,Lijun Luo,Libo Li,Tianyan You
The improper application of pesticides has resulted in significant environmental contamination. Therefore, determining the level of residual contamination in environmental samples is crucial. Herein, a novel molecularly imprinted polymer-based electrochemical (MIP-EC) sensor based on polyethyleneimine-modified carbon nanotubes/tin sulfide (MWCNTs-PEI/SnS
2
) was developed for the sensitive and selective assay of diuron (DU) in soil samples. The MWCNTs-PEI/SnS
2
was prepared by simply mixing MWCNTs-PEI and SnS
2
nanoflower via ultrasonic dispersion. The as-prepared MWCNTs-PEI/SnS
2
exhibited a large effective surface area, low electron transfer resistance, and superior electrocatalytic activity. Subsequently, a film of MIP was then fabricated in situ on the MWCNTs-PEI/SnS
2
modified glassy carbon electrode surface (MWCNTs-PEI/SnS
2
/GCE) by electropolymerization, using DU as template molecule and o-phenylenediamine (o-PD) as functional monomer. Under the optimal conditions, the developed MIP-EC sensor exhibited two segments of linear relationships in the DU concentrations range of 0.1–2.0 μM (R
2
=0.997), and 2.0–60 μM (R
2
=0.996) with a detection limit of 0.02 μM. Besides, the proposed sensor possessed outstanding analytical performance such as superior selectivity, excellent reproducibility, and great stability. Moreover, the MIP-EC sensor has been successfully applied for DU determination in farm soil and achieved satisfactory recoveries.
研究领域:
环境科学
·
分析化学
·
材料科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Jifei Liu,Yufeng Qi,Bi Fu,Jianfeng Dai,Qing Wang,Xiaojun Zhu,Xiangyu Shi
SnS 2 nanosheet (NS), SnS 2 nanoflower (NF) and SnS 2 NF@reduced graphene oxide (rGO) were synthesized by hydrothermal method . When used as anode materials for lithium-ion batteries (LIBs), SnS 2 NF@rGO exhibits reversible specific capacities of 525 mAh/g at 0.5C after 360 cycles and 412.5 mAh/g at 2.0C, which are significantly enhanced Li storage performance over SnS 2 NS and SnS 2 NF. The detailed electrochemical impedance spectroscopy (EIS) analysis were found that SnS 2 NF@rGO nanocomposite exhibits much reduced internal resistance originated from the decreasing Warburg factor. The electronic conductivity of the cycled SnS 2 NF@rGO is about three times more than that of cycled SnS 2 NS and SnS 2 NF. More importantly, the Li + diffusion coefficients D L i + were calculated using the galvanostatic intermittent titration technique (GITT) method, indicating SnS 2 NF@rGO demonstrated much enhanced Li + diffusion kinetics than that of electrodes without rGO additives. This means that SnS 2 NF@rGO is more suitable to be applied as anode materials for LIBs because the electrochemical performance was enhanced by the improved ionic transport properties, resulting from the increased electronic conductivity by the addition of two-dimensional layer structure rGO with superior electronic conductivity. This study could help us understanding how electronic conductivity contributed to ionic transport kinetics in electrochemical energy storage and conversion (EESC).
研究领域:
材料科学
·
能源存储与转换
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2020
·
IF 4.019
Zhongwei Fan,Jingfei Luan,Changqing Zhu,Fuqiang Liu
The novel Z-scheme heterojunction photocatalyst g-C 3 N 4 /Ag 2 S/SnS 2 with Ag 2 S quantum dots as electron mediators was successfully synthesized by in-situ ion exchange reaction and self-peeling of g-C 3 N 4 . Compared with g-C 3 N 4 , SnS 2 or g-C 3 N 4 /SnS 2 , the photocatalyst g-C 3 N 4 /Ag 2 S/SnS 2 exhibited more excellent photocatalytic performance under visible light irradiation. The removal rate of methyl orange was 96.8% after 30 minutes visible light irradiation and the reaction rate constant reached 0.10225 min -1 . The enhanced photocatalytic activity could be attributed to the formation of Z-scheme heterojunction structure and the 2D layered structure. The electrochemical and photoelectric performance tests showed that the separation and transfer efficiency of the photogenic electron-hole pairs as well as the redox potential were significantly improved. Additionally, the quenching experiments showed that the superoxide radicals and holes were the primarily active species. Combined with other characterizations, the reaction mechanism of the g-C 3 N 4 /Ag 2 S/SnS 2 for degrading the target pollutant methyl orange under visible light irradiation was proposed.
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DOI
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Nano-Micro Letters
·
2019
·Vol. 11
·期 1
·1-12
·
IF 9.043
Ren Zongling,Wen Jie,Liu Wei,Jiang Xiaoping,Dong Yanheng,Guo Xiaolong,Zhao Qiannan,Ji Guipeng,Wang Ronghua,Hu Ning,Qu Baihua,Xu Chaohe
Layered SnS 2 nanosheets/reduced graphene fiber (SnS 2 @rGF) hybrid fabrics were fabricated as binder-free electrodes.
Ultralight rGF fabrics could increase the active materials loading to a high level of 67.2 wt% in the whole electrode, which is much higher than that of traditional slurry coating electrodes by using Cu or Al foil as current collectors.
The practical capacity based on the weight of electrode could increase to as high as ~ 538 mAh g −1 exceeding to the slurry coating electrodes.
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DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2018
·Vol. 148
·期 7
·1990-2000
·
IF 2.911
Zhang Kai,Zhang Yunhai,Zhang WanJu
Abstract A kind of 2D/2D heterojunction photocatalysts was constructed by a facile in situ hydrothermal method that a tetragonal CuInS 2 nanosheets was horizontal loaded in ultrathin hexagonal SnS 2 nanosheets. Contrasted to pure CuInS 2 and SnS 2 nanosheets, the CuInS 2 /SnS 2 nano-heterojunctions revealed a noteworthy improvement photocatalytic activity under visible light irradiation for the degradation of organic dyes, which should be attributed to the narrowest band gap and the efficient charge separation and transfer improving the contact region in heterojunction interface. Especially, with 0.5 wt% addition of CuInS 2 , the heterojunction nanosheets shows a supreme visible-light photocatalytic activity and a superb degradation efficiency which reached 99% in 60 min with the solution of methyl orange. Moreover, CuInS 2 /SnS 2 nano-heterojunctions deliver excellent reusability in five degradation–regeneration cycles. The results indicated that CuInS 2 /SnS 2 has a promising prospect in organic pollutant treatment due to high efficiency and excellent stability. Graphical Abstract
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高影响因子
Journal of Materials Chemistry A
·
2017
·Vol. 5
·期 8
·4075-4083
·
IF 8.867
Qiang Chen,Fengqi Lu,Ying Xia,Hai Wang,Xiaojun Kuang
New conceptions of developing various nanostructure materials supported on conductive substrates are urgently required for additive-free integrated electrodes for lithium ion batteries (LIBs). In this work, Mo-doped SnS2-based nanosheets were directly grown on a conductive substrate, carbon cloth, via a facile hydrothermal method. Significantly, the as-synthesized samples possess a three-dimensional network structure consisting of interconnected nanosheets, which can be directly employed as additive-free integrated electrodes for LIBs. The as-obtained CC@Sn0.9Mo0.1S2 nanosheets exhibit initial high discharge and charge capacities of 2033.6 and 1869.8 mA h g−1 at a current density of 1 A g−1, with a coulombic efficiency of 91.9%. A high reversible discharge capacity of 1950.8 mA h g−1 is obtained after 200 cycles. Moreover, a high reversible capacity of 914.5 mA h g−1 is achieved even at a high current density of 5 A g−1, which significantly exceeds the theoretical capacity of commercial graphite and reversible capacity of SnS2. A full lithium ion battery was assembled composed of the CC@Sn0.9Mo0.1S2 anode and a commercial LiCoO2 cathode, which also delivered high capacity and cycling stability. The excellent electrochemical lithium storage performance of Mo-doped SnS2 could be attributed to the molybdenum doping, which limited the number of layers of the nanosheets, enlarged the interlayer spacing and generated rich defects.
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高影响因子
PHYSICA B-CONDENSED MATTER
·
2025
·
IF 2.8
Huiyang Xv,Huixiang Yan,Wei Li,Yongyi Li,Shuanglong Li,Xiaorui Huang,Bo Wang,Shichao Jiao,Di Lin,Wenxu Zhang
Amidst global energy transition priorities and environmental remediation imperatives, heterointerface-engineered photocatalysts emerge as strategic foci in advanced materials development. In this study, SnS 2 @C 3 N 5 composite with Z-scheme heterojunction structure were prepared using a synergistic strategy of hydrothermal synthesis and electrostatic self-assembly. Systematic characterization and performance tests show its unique energy band matching and interfacial charge transport mechanism promote photogenerated carrier separation thus potentiate the catalytic performance under luminous incidence. The material demonstrates robust photocatalytic performance. In hydrogen production tests, the value reaches 7546 μmol g −1 h −1 , demonstrating an 8.43-fold increase compared to pristine C 3 N 5 . For methyl orange degradation, it achieves 89.7 % removal efficiency within 120 min, being 2.2 times more effective than C 3 N 5 and 4 times higher than SnS 2 . Combined with transient photocurrent , fluorescence spectroscopy and theoretical calculations reveal the charge transfer pathways and reaction kinetics in Z-scheme heterojunctions . These findings provide both theoretical guidance and practical strategies for developing multifunctional photocatalytic materials.
研究领域:
材料科学
·
光催化
·
能源材料
·
环境修复
·
纳米复合材料
·
异质结工程
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DOI
高影响因子
OPTICAL MATERIALS
·
2020
·
IF 2.779
Lanqing Ling,Yu Tu,Xuanyu Long,Qianwen Li,Jiabao Gu,Nan Liu,Zequan Li
The emission of organic dye wastewater poses a great threat to the ecological environment. Therefore, it is necessary to prepare environment-friendly photocatalytic materials with high photocatalytic performance to degrade organic dyes. In this work, a new composite photocatalyst SnS 2 /NH 2 -MIL-125 (Ti) was formed by loading the multiphase SnS 2 of quantum dots (QDs) and hexagonal nanodiscs (NDs) on the NH 2 -MIL-125 (Ti) through one-step hydrothermal method , then used it to remove 40 mg/L Rhodamine B (RhB) under visible light . Compared with SnS 2 and NH 2 -MIL-125 (Ti), the photocatalytic degradation activity of the 12 wt% SnS 2 /NH 2 -MIL-125 (Ti) was enhanced by 2.4 and 2.1 times respectively, reaching 90.5%, after 80 min of visible light irradiation. The four times recycling test shows that this photocatalyst has outstanding stability and durability. Through analysis, NH 2 -MIL-125 (Ti) modified SnS 2 can improve visible light absorption, provide more active sites and inhibit photoelectron-hole recombination, thus enhancing photocatalytic activity . Superoxide radical (•O 2 − ) and hole (h + ) were determined to be the key active substances in the process by the reaction substance capture experiment. The photodegradation mechanism of RhB is also investigated and studied in detail. This novel multiphase SnS 2 /NH 2 -MIL-125 (Ti) material provides a new perspective for the design of organic-inorganic composite photocatalysts with excellent performance and improved stability, and has potential application in environmental purification.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yuejia Yin,Yajie Chen,Xinyan Yu,Qiuyu Zhang,Yaxin Ru,Guohui Tian
During the photocatalytic CO 2 reduction process, fast charge transport, abundant active sites, and high visible light utilization in photocatalysts are key to achieving excellent CO 2 conversion efficiency. In this work, we have designed and prepared hierarchical CuS@SnS 2 p-n heterostructure hollow cubes for photocatalytic CO 2 reduction. First, a monolayer of CuS was in situ generated on the pre-prepared Cu 2 O cubes to construct core–shell Cu 2 O@CuS cubes by sulfidation of Cu 2 O cubes. The following etching process led to the formation of CuS hollow cubes. Finally, the hierarchical CuS@SnS 2 p-n heterostructure hollow cubes were obtained by growing SnS 2 nanosheets on the CuS hollow cubes. The prepared CuS@SnS 2 p-n heterostructure hollow cubes showed an improved photocatalytic CO 2 reduction activity compared with the bare CuS and SnS 2 control samples. The p-n heterojunction formed between SnS 2 and CuS as well as its hollow structure enhanced the charge carrier separation efficiency and the light absorption capacity of the hybrid catalyst. Furthermore, after the decoration of Au nanoparticles, the formed Schottky junction further discouraged the charge carrier recombination. Thus, the cooperative p-n heterojunction and Schottky junction greatly facilitated photocatalytic CO 2 reduction, and exhibiting the maximum CO and CH 4 yields of 140.1 and 77.5 μmol g −1 h −1 , respectively. This work presents an efficient design of high-performance catalysts for photocatalytic CO 2 reduction.
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121761
·
IF 7.5
Bingkun Liu,Juncheng Guo,Siyuan Chen,Yinhan Yang,Beibei Liu,Hongda Huang,Jingtao Zhang,Yonghui Zhang
Highly efficient charge migration and separation are critical for the design of high-efficiency and stable photocatalysts. In our work, novel 2D/2D/2D g-C 3 N 4 /Ti 3 C 2 /SnS 2 heterojunctions were successfully prepared via a simple hydrothermal route combined with electrostatic self-assembly strategy. Compared to single-component (g-C 3 N 4 , SnS 2 ) and binary composite materials (g-C 3 N 4 /SnS 2 , g-C 3 N 4 /Ti 3 C 2 ), the optimized ternary g-C 3 N 4 /Ti 3 C 2 /SnS 2 composite displayed significantly enhanced photocatalytic efficiency and higher kinetic rate constants for the elimination of Cr(VI) and tetracycline (TC). More interestingly, further improved photocatalytic performance was achieved when the composite catalyst was applied to the mixed Cr(VI)/TC pollutant system, with the reaction rate constants being 1.46-fold and 1.06-fold higher than those of single Cr(VI) and single TC systems, respectively. Finally, a Z-scheme charge migration pathway was proposed in the 2D layered g-C 3 N 4 /Ti 3 C 2 /SnS 2 heterojunction, which enabled the expedited electron transfer between g-C 3 N 4 and SnS 2 with Ti 3 C 2 as an electron mediator and boosted the charge separation efficiency. The present work provides a viable way for constructing 2D/2D/2D Z-scheme heterojunction photocatalytic materials, offering great potential for the treatment of complex pollutants in wastewater.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yi Peng,Juntao Wang,Ying Yan,Wenlei Wang,Hongbo Xiao
In this work, a high content of pyrrole nitrogen carbon nitride (HPCN)-SnS 2 has been successfully constructed with −C═Sn− chemical bond as the interface framework. The charge state of Sn species was adjusted by β particles to obtain controllable sulfur defects onto the HPCN-SnS 2 through electron beam irradiation (EBI). The composites exhibited excellent photocatalytic oxidation capacity of As(Ⅲ) and adsorption capacity of As(Ⅴ). It is confirmed that the optimized HPCN-SnS 1.38 can remove the total As concentrations below 0.40 mg/L within 80 min. Additionally, the effect of various conditions (pH value and type of anions) was evaluated using degradation experiments, and HPCN-SnS 1.38 could be reused at least 5 times without an obvious reduction in the photocatalysis and adsorption performances. Based on the experimental results, the photocatalytic mechanism of As(Ⅲ) by HPCN-SnS 2 after electron beam irradiation was studied. Free radical quenching experiments and electron paramagnetic resonance (EPR) showed that the oxidation of As(III) under visible light is mainly controlled by •O 2 − and •OH, and •OH is converted from •O 2 − under acidic conditions.
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高影响因子
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