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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产品关联
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
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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产品关联
DOI
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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产品关联
DOI
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.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Jinrong Chuan,Shengzhi Duan,Yumei Li,Linping Liu,Jiyun Gao,Chenhui Liu
Microwave-assisted molten salt etching enables rapid, green preparation of Ti 3 C 2 T x from Ti 3 AlC 2 in 15 min. • In situ sulfidation achieves one-step construction of SnS 2 /Ti 3 C 2 T x heterojunctions. • SnS 2 /Ti 3 C 2 T x shows a 472% NO 2 response at room temperature, with 39.73 ppb LOD and good stability. • DFT calculations reveal band regulation at heterojunctions, enhancing NO 2 adsorption via p-type channels. MXenes have attracted attention in room-temperature gas sensing due to their high conductivity and tunable surface groups. However, conventional preparation often relies on fluoride-containing etching and stepwise processes, which are not only cumbersome but also hazardous. Herein, a microwave-assisted Lewis acidic molten salt etching strategy was developed to efficiently etch Ti 3 AlC 2 within 15 min, accompanied by the simultaneous in situ growth of Sn nanoparticles on Ti 3 C 2 T x . Subsequent in situ sulfidation formed SnS 2 /Ti 3 C 2 T x heterojunctions. The material exhibits outstanding NO 2 -sensing performance at room temperature: a response of 472% toward 100 ppm NO 2 , together with excellent selectivity, long-term stability, and a low limit of detection (LOD) of 39.73 ppb. The enhancement is ascribed to the SnS 2 /Ti 3 C 2 T x heterointerfaces and abundant adsorption sites derived from the enlarged specific surface area. DFT calculations reveal that band modulation induced by work function differences creates p-type conductive channels, clarifying the sensing mechanism. This study offers a green, rapid fabrication approach for high-performance room-temperature gas sensors. Download: Download high-res image (206KB) Download: Download full-size image
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DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Pengyu Zhang,Jinping Zhang,Yuan Cheng,Hongwei Wang,Minghui Tan,Yake Wang,Tong Zhang,Yunchao Mu,Joshi Mahesh Kumar,Xinli Li
In response to the rising severity of co-pollution from heavy metal ions and organic antibiotics in water, creating efficient synergistic removal technologies has become a critical research direction in environmental catalysis. In this study, a BiVO 4 /SnS 2 /Bi 2 S 3 ternary heterojunction photocatalyst with a broad spectral response was successfully constructed through a hierarchical construction strategy, using a hydrothermally synthesized BiVO 4 /SnS 2 binary heterojunction as the precursor, followed by in-situ growth of narrow-bandgap Bi 2 S 3 nanoparticles via a room-temperature ion exchange method. Characterization results from XRD, TEM and XPS confirmed that SnS 2 nanosheets and Bi 2 S 3 nanoparticles were distributed on the BiVO 4 surface, forming a tightly contacted heterojunction interface. The sequential introduction of SnS 2 and Bi 2 S 3 significantly increased the specific surface area of the material (to 14.723 m 2 /g). Optical performance tests demonstrated that the ternary heterojunction exhibited substantially enhanced visible light absorption, with the bandgap narrowing to 2.21 eV. Electrochemical tests revealed a significant reduction in the interfacial charge transfer resistance and a marked improvement in the charge carrier separation efficiency. Photocatalytic performance evaluation indicated that under simulated solar irradiation, BV/SN/BS(1 h) achieved a Cr(VI) reduction rate constant (0.07032 min −1 ) over 15 times higher than that of pure BiVO 4 and a TC degradation rate constant (0.00520 min −1 ) approximately 1.3 times higher. In the Cr(VI)-TC combined system, a significant synergistic degradation effect was observed, with the Cr(VI) reduction rate constant further increasing to 0.09252 min −1 and the TC degradation rate constant rising to 0.01471 min −1 . Notably, EPR tests did not detect •O 2 − or •OH radicals. DFT calculations combined with experimental characterization revealed the formation of a type-II heterojunction among BiVO 4 , SnS 2 and Bi 2 S 3 , in which electrons and holes migrate in opposite directions, achieving efficient charge carrier separation. Cr(VI) and TC act as mutual sacrificial agents during the reaction process, further enhancing the photocatalytic efficiency. This study provides a novel material construction strategy and theoretical basis for designing efficient photocatalytic systems aimed at the synergistic degradation of heavy metal-organic pollutants from complex water bodies.
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Linzi Huang,Chenxi Wang,Yaqi Yang,Yilin Wang,Chunyan Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
The ecological environment and public safety are seriously threatened by the typical phenolic contaminant hydroquinone (HQ). Here, using a straightforward physical mixing technique, we created an n - n heterojunction by uniformly immobilizing cadmium sulfide (CdS) nanoparticles on the surface of a three-dimensionally layered, flower-like structure made of tin sulfide (SnS 2 ). Then, as photosensitizers , carbon nanotubes (CNTs) were added to the CdS/SnS 2 complex to create a type-II heterostructure of CdS/SnS 2 /CNTs with synergistic effects. Subsequently, the detector HQ was bound to the modified photoelectrodes , which was accompanied by the hole oxidation of the bound HQ, leading to a significant increase in the photocurrent signal, thus allowing specific and sensitive detection of HQ. Under optimized detection conditions, the proposed photoelectrochemical sensor shows a wide detection range of 0.2 to 100 μM for HQ with a detection limit as low as 0.1 μM. The high accuracy of the sensor was demonstrated by comparison with the detection results of UV–vis spectrophotometry . In addition, the photoelectrochemical sensor exhibits good reproducibility, stability, selectivity , and specificity, providing a light-driven method to detect HQ.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 25
·15320-15332
·
IF 10.733
Deliang Cheng,Lichun Yang,Jiangwen Liu,Renzong Hu,Jun Liu,Ke Pei,Min Zhu,Renchao Che
The exploitation of high-performance anode materials is one of the key challenges for the development of lithium-ion batteries. Herein, we report a micro-nano structured (SnS–SnS2–S)/FLG (few-layer graphene) composite in which the in situ formed SnS, SnS2 and S nanoparticles are tightly supported by the in situ exfoliated FLG. The multi-phase structure could induce the formation of a high fraction of interfaces, enabling the interface-controlled lithiation/delithiation, which is characterized by large interfacial storage and fast interfacial diffusion, and boosting the electrode performance at high rates greatly. On the other hand, the step-wise lithiation/delithiation of S, SnS2 and SnS can offer nano-spatial confinement effects to accommodate the volume expansion and particle aggregation, and thus enhance the structural stability of the electrode. Meanwhile, the FLG matrix can serve as a robust layer to further maintain the structural integrity of the electrode. As an anode for lithium-ion batteries, the composite exhibits an ultrahigh gravimetric/volumetric capacity (1062.2 mA h g−1/2018 mA h cm−3 at 0.2 A g−1), ultrahigh rate (842/756 mA h g−1 even at 5.0/10.0 A g−1) and ultrastable cyclability (100%/93.6% capacity retention after 1000/2000 cycles at 1.0/10.0 A g−1). Even in full-cells and sodium-ion batteries, superb comprehensive performance is demonstrated. Therefore, the (SnS–SnS2–S)/FLG composite could be a new promising anode material for application in batteries.
研究领域:
材料科学
·
储能技术
·
电化学
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jing Gong,Shunhua Wang,Jie Liu,Yaowen Zhang,Jiyao Li,Hao Yang,Kunneng Liang,Yi Deng
Periodontitis, a chronic inflammatory condition associated with bacterial infection, is the leading cause of tooth loss in adults. Pathogenic bacteria that persist in deep periodontal pockets with hyperglycemic levels following traditional manual debridement can contribute to a persistent local inflammatory microenvironment, posing a significant challenge and highlighting the critical need for improved therapeutic approaches. In addition, the anaerobic environment during these treatments is beneficial to the colonization of anaerobes and may amplify inflammatory responses. Herein, we designed a glucose oxidase (GOx)-coating MXene-SnS 2 bio-heterojunctions (MS@G bio-HJs) for multi-modal and effective treatment of anti-bacteria and anti-inflammatory. Upon the hyperglycemic nidus in periodontal pockets, GOx catalyzes the conversion of glucose into hydrogen peroxide (H 2 O 2 ). Subsequently, the breakdown of H 2 O 2 into hydroxyl radicals through Sn 2+ /Sn 4+ -involved Fenton-like reactions enables in situ liberation of oxygen (O 2 ), contributing to relieve local hypoxia. The proposed bio-HJs presents a satisfactory bactericidal capability with anti-bacterial rates of more than 99 % upon near-infrared irradiation, in virtue of multi-modal therapies including photodynamic, photothermal and chemodynamic treatments. Furthermore, in vivo assays utilizing infectious rat models demonstrated that the proposed bio-HJs exhibits high biocompatibility and capacity to alleviate hypoxia and reduce pathogenic virulence factors, potentially contributing to periodontal tissue regeneration. These findings suggest that the versatile bio-HJs could be a promising therapeutic candidate for treating infectious periodontal diseases.
研究领域:
牙科学
·
生物材料
·
纳米技术
·
治疗学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）