SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yuehua Pan,Yingxue Pang,Hao Fu,Zhenyu Cai,Yuxiang Deng,Zhiwei Huang,Donglou Ren,Yuezhou Wei,Xinpeng Wang
Extracting uranium from uranium waste streams, particularly utilizing zero-carbon emission photochemistry, emerges as a promising and sustainable strategy. Herein, we construct an SS@Ga/PCS composite photocatalyst, consisting of SnS 2 nanosheets as well as a metal − support produced by confining sub-nano Ga δ+ clusters in the hollow porous carbon spheres (PCS). The Ga δ+ clusters are innovatively introduced as active sites with localized hole capability to simultaneously improve visible light response and carrier separation. In-situ characterizations and theoretical calculations reveal that Ga δ+ clusters induced metal-support interaction (MSI) by optimizing the electronic structure in the PCS host; In addition, Ga δ+ clusters act as plasma excitation elements to enhance the visible light responsiveness and carrier separation of SS@Ga/PCS. Ultimately, the inhomogeneous photocatalysis of uranium extraction achieved superior performance as compared to the pure components, corresponding to an encouraging removal rate of 97.87 % and a photo-extraction capacity of up to 1867.30 mg g −1 in 50 mL of uranium waste solution, as well as a wide-concentration window adaptability and excellent catalytic robustness. More significantly, this ingenious nano-confined strategy extends the design ideas of highly dispersed sub-nanometallic cluster co-catalysts and stimulates the study of the availability of abundant reactive active sites combined with monomer strong interactions, which provides a novel insight into the mechanism of photocatalytic uranium extraction.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
ChemPlusChem
·
2017
·Vol. 82
·期 9
·1218-1223
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IF 2.797
Shun Yang,Shiting Lin,Jie Fan,Yaru Wang,Chang Liu,Xiao Yan
Graphical Twice as nice : The porous structure and well-defined cavities of a β-cyclodextrin-decorated polymer were combined with the photoactivity of SnS 2 in a new material for the simultaneous adsorption and photodegradation of organic pollutants. The SnS 2 -modified polymer was derived from nucleophilic aromatic substitution of the hydroxyl groups of both β-CD and SnS 2 -OH by tetrafluoroterephthalonitrile. The discharge of organic pollutants poses a serious threat to public health and the environment. Developing new strategies and materials to remove organic pollutants from water efficiently and completely is of great importance. Herein, a SnS 2 -modified porous β-cyclodextrin-containing polymer (SnS 2 @PCDP), which was derived by nucleophilic aromatic substitution of the hydroxyl groups of both β-CD and SnS 2 −OH by tetrafluoroterephthalonitrile, was prepared for the rapid, complete removal of organic pollutants from water . The porous structure and well-defined cavities of β-CD endow SnS 2 @PCDP with a facile and high adsorption capacity, and the modification with SnS 2 leads to simultaneous adsorption and photodegradation processes for the rapid and complete removal of organic pollutants. In addition, SnS 2 @PCDP can be regenerated several times using light irradiation with no loss in performance. Overall, the efficient removal performance and excellent reusability indicate that SnS 2 @PCDP has potential for practical applications in the efficient treatment of organic pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ChemPhotoChem
·
2016
·Vol. 1
·期 2
·60-69
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IF 0
Erwei Huang,Xiaolong Yao,Weichao Wang,Guangjun Wu,Naijia Guan,Landong Li
Graphical The sides face off : SnS 2 nanoplates dominated by {101} or {100} exposed facets are successfully prepared through a simple hydrothermal method and their facet-dependent band-energy diagrams are confirmed by combining spectroscopic analysis and theoretical calculations. Accordingly, SnS 2 nanoplates dominated by different exposed facets exhibit quite different photo-catalytic behaviours in target reactions. A facile hydrothermal strategy is developed for the synthesis of SnS 2 nanoplates with specific exposed facets. The crystallographic structure and the specific exposed facets of as-prepared SnS 2 are confirmed by X-ray diffraction, Raman spectroscopy and TEM analysis, and the surface electronic state and the chemical composition of samples are investigated by X-ray photoelectron spectroscopy (XPS). The band gaps of SnS 2 nanoplates are directly measured from UV/Vis absorption spectra, and their detailed band alignments are determined by Mott–Schottky plots and ultraviolet photoelectron spectroscopy (UPS) analysis, which are well supported by DFT calculations. Significant transient photocurrent responses under visible-light irradiation from photoelectrochemical analysis reveal that SnS 2 samples are active and stable visible-light-driven photocatalysts and that SnS 2 nanoplates dominated by {101} exposed facets should be better photocatalysts than those dominated by {100} exposed facets. The photocatalytic activities of SnS 2 nanoplates are examined in two typical reactions, that is, rhodamine B (RhB) degradation and hydrogen production from water splitting. As expected, SnS 2 nanoplates dominated by {101} exposed facets exhibit distinctly higher activity than those dominated by {100} exposed facets in the photocatalytic RhB degradation. For hydrogen production from water splitting, SnS 2 nanoplates dominated by {101} exposed facets exhibit significant photocatalytic activity resulting from their suitable band edges to realize the photocatalytic redox reaction, in great contrast to the inactive SnS 2 nanoplates dominated by {100} exposed facets.
研究领域:
材料科学
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化学
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DOI
SENSORS AND ACTUATORS B-CHEMICAL
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2020
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IF 7.1
Di Liu,Zilong Tang,Zhongtai Zhang
SnS 2 is a promising candidate for NO 2 sensing applications due to its suitable band gap and large electronegativity. However, SnS 2 based gas sensors are still restricted to detect NO 2 gas at room temperature due to their giant resistance and poor recovery. Here, we report hollow SnO 2 @SnS 2 nanostructures prepared by a one-step hydrothermal method. The SnO 2 @SnS 2 based sensor showed high response and good recovery to ppb-level NO 2 under visible illumination at room temperature (25 °C). The superior sensing performance of the SnO 2 @SnS 2 sensor was attributed to the hollow porous heterojunction structure beneficial for gas diffusion, as well as visible light assistant facilitating charge transfer and gas desorption. This work systematically studied the influence of oxygen concentration in background gas on the NO 2 sensing performance of the SnO 2 @SnS 2 sensor, and proposed a physical adsorption model for the NO 2 sensing mechanism of the SnO 2 @SnS 2 sensor under visible light at room temperature. In addition, the effect of humidity on the gas sensing performance of the SnO 2 @SnS 2 sensor to different concentrations of NO 2 was also discussed.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2016
·
IF 2.101
Fang Deng,Lina Zhao,Xule Pei,Xubiao Luo,Shenglian Luo
The g-C 3 N 4 /SnS 2 composites were prepared by in situ hydrothermal method , and the effect of g-C 3 N 4 content on the physical and chemical properties, and photocatalytic performance of g-C 3 N 4 /SnS 2 composites was investigated. The introduction of g-C 3 N 4 enhanced the visible-light absorption of SnS 2 , and reduced the recombination rate of electron-hole pairs. The photocatalytic performance of g-C 3 N 4 /SnS 2 composites was also obviously influenced by g-C 3 N 4 content, and it was found that 15% g-C 3 N 4 /SnS 2 composite exhibited the highest photocatalytic activity and excellent regeneration, which was attributed to the most efficient charge separation, the largest specific surface area and the formation of dominant active species (h + and O 2 − radicals) during the photocatalytic process.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
COMPOSITES PART B-ENGINEERING
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2023
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IF 13.1
Xiang Zhang,Zheng Xiang,Kai Yao,Xiao Wang,Hao jie Jiang,Jing li Wang,Wei Lu
Heterointerface engineering is now recognized as a powerful strategy to optimize the microwave absorption performance of dielectric materials through composition adjustment and structural design. Herein, a hydrangea-like N-doped Carbon/MoO 2 @SnS 2 (NC/MoO 2 @SnS 2 ) composite was successfully prepared by high-temperature pyrolysis and oil bath treatment. The surface of each NC/MoO 2 microsphere was vertically covered with interconnected SnS 2 nanosheets , forming a porous core-shell morphology. We found that the number of heterojunctions and the proportion of high-lossy phases played a decisive role in optimizing the electromagnetic parameters . By regulating the content of dielectric phases, the optimized NC/MoO 2 @SnS 2 (S3 sample) displayed a minimum reflection loss (RL min ) of −75.0 dB at an ultrathin thickness of 1.41 mm and a wide EAB of 4.2 GHz at 1.53 mm. The enhanced microwave absorption was mainly ascribed to multiple polarization relaxation, multi-interface reflection and good impedance matching characteristics produced by this semiconductor/carbon heterostructure with dual Schottky barriers . Therefore, this work provided a feasible strategy for making full use of heterointerface engineering to design ternary semiconductor/carbon heterostructures as high-performance dielectric MAMs.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
GREEN CHEMISTRY
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2025
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IF 9.2
ZhiWei Dong,YaLing Jia,Zeyu Wang,Antony Rajendran,Wen-Ying Li
Electrocatalytic CO2 reduction to formic acid is a promising strategy to obtain value-added chemicals and achieve the carbon cycle. However, its practical application is generally impeded by the limited accessibility of CO2 to the catalyst's surface and the lack of efficient universal catalyst across different pH levels. Herein, we report a new catalyst, i.e., SnS2 decorated with hydrophobic polymer polyvinylidene fluoride (SnS2+PVDF), for the effective electrocatalytic CO2 reduction to formate/formic acid across a wide pH range in a flow cell. This catalytic system accomplishes a remarkable Faradaic efficiency for the formic acid production in alkaline (98%), neutral (86%), and acidic (93%) electrolytes. Also, the single-pass carbon efficiency reaches up to 72.77% in acidic electrolyte. Water contact angle measurements in association with the in-situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy results indicate that the inclusion of PVDF creates a hydrophobic microenvironment which increases the CO2/H2O ratio near the surface of SnS2 particles. As a consequence, SnS2 particles enjoy the enhanced CO2 concentration around their surface to form many three-phase (solid-liquid-gas) boundary. In-situ Raman spectra combined with electrocatalytic studies reveal that SnS2 undergoes reconstitution to form catalytically active Sn/SnS2 during the reaction. These findings ensure and expand the generality of hydrophobic microenvironment regulation strategy in promoting electrocatalytic CO2 reduction to formic acid.
研究领域:
化学
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材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2018
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IF 6.14
Liquan Jing,Yuanguo Xu,Zhigang Chen,Minqiang He,Meng Xie,Jie Liu,Hui Xu,Shuquan Huang,Huaming Li
Highly efficient different morphologies of SnS2 (nanoparticles, nanosheets, and 3D flower-like)/g-C3N4 composites were, respectively, prepared via an elementary hydrothermal method that was integrated with the calcination means. The XRD results showed that the relative intensities of several diffraction peaks, especially (001), (100), (101), and (102), indicated that the as-prepared samples (SnS2 nanoparticle, SnS2 nanosheet, and 3D flower-like SnS2) should be dominated by different specific preferred growth of facets. In comparison with SnS2 and pure g-C3N4, the SnS2/g-C3N4 composites exhibited much higher H2 development performance under visible light irradiation in the presence of Na2SO3 and Na2S as the sacrificial agent. The SnS2 nanoparticles/g-C3N4 composites exhibit the highest visible-light-driven H2-generation rate of 6305.18 μmol h–1 g–1 without any noble metal as cocatalyst, which is approximately 16.98 times higher than that of SnS2 nanoparticles. In all, the SnS2 nanoparticles (SnS2 nanoparticle/g-C3N4 composite) dominated by (001) and (100) preferred growth of facets exhibit significant photocatalytic activity resulting from their suitable band edges to realize the photocatalytic redox reaction. The analysis of photocurrent response, linear sweep voltammograms, and photoluminescence demonstrated that the low recombination rate and the efficacious charge transfer of photogenerated carriers could be assigned to the interactive impact of g-C3N4 and SnS2.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2021
·Vol. 8
·期 23
·5006-5015
·
IF 6.569
Ruozhen Wu,Juanyuan Hao,Tingting Wang,Shengliang Zheng,You Wang
The two-dimensional layered metal dichalcogenides (LMDs) SnS2 is an interesting candidate for high-performance NO2 gas sensors. However, most SnS2-based NO2 sensors are usually inert for detecting ppb-level NO2 at room temperature (RT) because of the intrinsic features of a large bandgap, poor conductivity, and lack of active sites. Herein, we successfully endowed SnS2 with ppb-level NO2 detection at RT by using a carbon (C)-doping strategy. Compared to the pristine SnS2 showing a negligible response toward NO2 at RT, the C-doped SnS2 exhibited an excellent response (481.3% for 1 ppm and 146.5% for 100 ppb) with full recovery. The sensitivity toward ppb-level NO2 was as high as 1200% ppm−1. Moreover, the experimental and theoretical limit of detection (LOD) were down to 10 ppb and 0.3 ppb, respectively. Such impressive gas-sensing performance of C-doped SnS2 at RT was due to the doping-mediated synergistic effect of energy-band modification and the presence of an S vacancy. The results provide a real solution for developing high-performance LMDs-based gas sensors.
研究领域:
材料科学
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传感器技术
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环境监测
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产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2021
·
IF 3.995
Xiaotong He,Junbin Liu,Biyu Kang,Xinye Li,Lingxing Zeng,Yanru Liu,Jianbin Qiu,Qingrong Qian,Mingdeng Wei,Qinghua Chen
SnS 2 has aroused great interests for application of sodium-ion batteries, because of its graphene-like structure and high theoretical capacity. Herein, we present an effective nanocasting strategy to fabricate the SnS 2 / enteromorpha prolifera derived carbon (SnS 2 /EPC) composite, whose microstructure anchors the SnS 2 nanosheets on enteromorpha prolifera (EP) derived carbon. It can effectively solve the problems of poor conductivity and volume expansion of SnS 2 electrode during charging and discharging process. The optimized SnS 2 /EPC could deliver high reversible capacity of 443 mA h g −1 at 0.1 A g −1 , and maintain reversible capacity of 340 mA h g −1 at high rate of 2 A g −1 after 450 cycles, indicating that SnS 2 /EPC is a promising anode material for sodium storage.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Li Zhang,Qing Shu,Qiong Wu,Xuyao Xing
In this study, SnS 2 /Ti 3 C 2 was synthesized by combining SnS 2 (synthesized via oil bath method) with Ti 3 C 2 (prepared from etching of Al layers from Ti 3 AlC 2 MAX phase). The morphology, structure and photochemical properties of the catalyst were analyzed by various characterization methods. The photocatalytic performance of sample was studied by the degradation of Rhodamine B (RhB) under xenon lamp irradiation. Results showed that SnS 2 /Ti 3 C 2 could achieve 99 % photocatalytic degradation of RhB within 60 min, which was much higher than the 38 % photocatalytic degradation of SnS 2 . In addition, the RhB degradation rate of SnS 2 /Ti 3 C 2 still reached 93 % after 5 cycles. The excellent photocatalytic activity and durability were mainly attributed to the formation of Schottky heterojunction between SnS 2 and Ti 3 C 2 , which was very advantageous for efficiently separating and transferring charge carriers. The work functions of SnS 2 and Ti 3 C 2 Tx were calculated through the DFT calculations, which were 5.22 eV and 5.69 eV respectively. According to barder charge analysis, the charge transfer between SnS 2 and Ti 3 C 2 was 0.04 e. Meanwhile, radical trapping experiments confirmed that h + and •O 2− were the main active species in the reaction system. As a visible light-responsive catalyst, SnS 2 /Ti 3 C 2 could be effectively applied to the degradation of organic dye pollutants, and which has broad application prospects.
研究领域:
材料科学
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环境科学
·
光催化技术
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2020
·
IF 6.182
Linjuan Wang,Siva Krishna Karuturi,Ling Zan
We present one-pot hydrothemal syntheis of SnS 2 -In 2 S 3 p-n heterostructures for photocatalytic reduction of Cr 6+ to Cr 3+ . The conduction bands of In 2 S 3 and SnS 2 serve as the photogenerated electron donors and acceptors, respectively, forming a p-n junction band alignment improving the photogenerated charge separation efficiency. Through a detailed investigation of photocurrent spectra, photoluminescence spectra and electrochemical impedance, the heterojunction formation is shown to enhance the photogenerated charge separation and transport properties. In addition, the analysis of 5,5-Dimethyl-1-pyrroline N-oxide (DMPO) spin trapping electron spin resonance (ESR) spectra and band structure further testify the p-n junction of the composite catalyst that could accelerate the electron transport and change the pathway of photocatalytic process toward Cr 6+ reduction. Furthermore, SnS 2 -In 2 S 3 heterojunction photocatalyst achieved 3 times and 67 times higher efficiency than pure In 2 S 3 and SnS 2 photocatalysts under visible light toward Cr 6+ reduction. Moreover, the SnS 2 -In 2 S 3 p-n heterojunction photocatalyst demonstrates Cr 6+ removal in a weak alkaline solution, breaking through the challenge of Cr 6+ reduction in an alkaline environment.
研究领域:
材料科学
·
环境科学
·
光催化
✓ 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）