ACS Applied Nano Materials
·
2020
·
IF 0
He Tian,Xiancheng Meng,Juehan Yang,Chao Fan,Shuo Yuan,Xia An,Chun Sun,Yonghui Zhang,Mengjun Wang,Hongxing Zheng,Zhongming Wei,Erping Li
Two-dimensional (2D) nanomaterials have been attracting intensive interest due to their unique physical and optoelectronic properties. Van der Waals nanolayered heterostructures based on different 2D nanomaterials provide a state-of-the-art platform for investigating the physical phenomena and have extended the applications of 2D nanomaterials, leading to an era of next-generation high-performance electronic and optoelectronic technology. Herein, vertical 2D SnS/SnS2 p–n and SnSe2/SnS2 n–n nanolayered heterostructures are constructed by exfoliating individual materials and stacking them artificially. The two types of back-gate field-effect phototransistors show clear rectifying behaviors with the existence of band offset and excellent optoelectronic performances. The SnS/SnS2 p–n nanolayered heterostructure shows an ambipolar behavior with a hole mobility of 6.96 cm2·V–1·s–1 and electron mobility of 0.68 cm2·V–1·s–1, while the SnSe2/SnS2 n–n nanolayered heterostructure shows an intense n-type behavior with electron mobility of 3.78 cm2·V–1·s–1 and a high on/off ratio of over 105. Interestingly, due to the band alignments and built-in potentials in the two types of nanolayered heterostructures, the phototransistors exhibit enhanced responsive performances to illuminations of three-primary-color lasers (λ = 405, 532, and 650 nm) compared to the individual components. The SnS/SnS2 phototransistor shows a high photoresponsivity of 3567 A W–1, a high detectivity of 3.64 × 1013 Jones, and a fast response time of 0.8 ms. The SnSe2/SnS2 phototransistor also exhibits a high photoresponsivity of 1793 A W–1 and a fast response time of 15.4 ms.
研究领域:
材料科学
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纳米技术
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光电技术
✓ 已验证
产品关联
DOI
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xiaohua Zheng,Mengnan Xu,Chenbin Cai,Yanhaohan Yuan,Feng Lin,Wei Chen,Fanger Yang
Photocatalysis is a green approach to solving energy and environmental problems, and researchers are still pursuing high-performance photocatalysts . Although BiOX (X = Cl or Br) has a suitable bandgap and good stability, its photoresponse is mostly concentrated in the UV region. Conversely, SnS 2 has a wide photoresponse range but exhibits perceptible photocorrosion and poor stability. To exploit the advantages of both BiOX and SnS 2 , this study hydrothermally synthesized and introduced superfine SnS 2 (∼30 nm in size) into a BiOCl/BiOBr binary system to fabricate BiOCl/BiOBr/SnS 2 composites. Subsequently, the degradation performance of these composites in a Rhodamine B solution under visible light was investigated. Results show that the BiOCl/BiOBr/SnS 2 heterojunctions were successfully prepared and the composites exhibited the best photocatalytic performance with 6% mass fraction of SnS 2 (BiOCl-to-BiOBr mol ratio = 1:1). The formation of a double S-schedule heterojunction between BiOCl/BiOBr and SnS 2 not only accelerated charge separation and transfer but also broadened the photoresponse range and reduced photoelectron–hole recombination under full-spectrum irradiation. Loading a small narrow-bandgap photocatalyst onto a large photocatalyst provides an effective way to construct heterojunctions with excellent photocatalytic performance. The ternary photocatalyst presents a favorable photocatalytic stability, and its photodegradation rate is 4.6, 4.5 and 220.5 times that of BiOCl, BiOBr and SnS 2 , respectively.
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
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2016
·Vol. 16
·期 6
·5740-5745
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IF 1.338
Deng Jiangming,Mo Yunfei,Liu Jianghui,Guo Rui,Zhang Yi,Xue Wei,Zhang Yuanming
Inorganic nanoparticles have been widely used in biomedical field. In this paper, we try to study the use of three types of inorganic nanoparticles (i.e., SnS2, BiOCl and SnS2-incorporated BiOCl (SnS2/BiOCl)) as doxorubicin (DOX) carriers. Firstly, SnS2,
BiOCl and SnS2/BiOCl were synthesised, then were characterized by TEM, nanoparticles size and zeta potential. Next the drug release and cell viability test were carried out. The cell viability test indicated that the drug carriers can effectively kill HeLa cells while maintaining
low cytotoxicity against normal cells-fibroblasts. The results show the potential of SnS2/BiOCl nanoparticles for antitumor applications.
研究领域:
生物医学
·
药物递送
·
肿瘤学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Bowen Xing,Min Zhang,Zhenya Zhang,Xiaolong Yao
In this study, In-doped SnS 2 nanostructures were synthesized by a one-step hydrothermal method. Characterization results demonstrated that S vacancies were successfully constructed in the synthesized material. Samples doped with different masses of indium were prepared. Among them, the In/V s2 -SnS 2 sample with moderate sulfur vacancy content the In/V s2 -SnS 2 showed the best ammonia detection response (500 ppm) at room temperature, and the peak response reached 2392. Moreover, the sensor exhibited a response/recovery time of 37.5s/3.3s. The adsorption energies of ammonia on the pure phase SnS 2 surface and S vacancies were determined by the first principle DFT calculations. The theoretical analysis agreed well with the experimental results, suggesting that the S vacancies provided more active sites for effective adsorption, favoring the sensitive detection of ammonia molecules. The proposed study demonstrates that In-doping created S vacancies in SnS 2 , which is promising for gas sensitization, laying the foundation for high-performance room-temperature gas sensors.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xin Zhang,Haohuan Yuan,Jiao Bao,Wenting Xiao,Guannan He
ZnCdS, a metal chalcogenide solid solution, has attracted significant attention. However, two primary challenges hinder its widespread application in photocatalytic hydrogen evolution : the rapid recombination rate of photogenerated carriers and susceptibility to photo-oxidation in the aqueous environments. In this article, a facile hydrothermal route was employed for the first time to uniformly assemble SnS 2 nanoparticles onto the surface of Zn 0.2 Cd 0.8 S (ZCS) nanopolyhedra. The intimate contact of two materials resulted in the formation of heterojunctions . By adjusting the content of SnS 2 , the hydrogen evolution reaction (HER) performance was optimized to reach up to 12170 μmol/gh, which is 1.9 times of the pristine ZCS. Notably, the photocatalyst demonstrated remarkable stability with an apparent quantum yield (AQY) of 15.5% at 420 nm. The enhanced photocatalytic performance can be attributed to the following factors: (i) The heterojunction composite, with larger surface area and more micropores, provides additional active sites and exhibits high photocatalytic activity ; (ii) The internal electric field accelerates the separation of photogenerated carriers and reduces the recombination rate of electron-hole pairs; (iii) The photogenerated holes can be quickly transferred to the valence band of SnS 2 and react with triethanolamine , thereby significantly reducing the photo-oxidation of ZCS. This work not only proposed a feasible route to improve the photocatalytic activity of ZCS, but also provided insights into the role of heterojunctions and the reaction mechanism.
研究领域:
材料科学
·
光催化
·
能源化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHEMISTRY
·
2016
·Vol. 84
·期 6
·420-426
·
IF 0.791
Xiaoxue ZHANG,Yunfeng ZHAN,Fangyan XIE,Weihong ZHANG,Jian CHEN,Weiguang XIE,Wenjie MAI,Hui MENG
SnS2 urchins self-assembled by one dimensional nanorods, being different from the two dimensional flakes, were synthesized by a facile method to work as an anode material in lithium-ion battery. The SnS2 urchins displayed a stable capacity of 600 mAh g−1 at the current density of 100 mA g−1 after 50 cycles. The SnS2 urchins showed better cyclic performance and rate capacity compared with SnS2 flakes. The improved performance was ascribed to the three dimensional structures which can decrease the volume expansion/contraction of SnS2 during cycling; the fatal drawbacks of SnS2 were thus mitigated. The facile and economic preparation route may find suitable application to industrial mass production.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Ziqi Zhang,Hui Yi,Jinyuan Cai,Weiguang Han,Fangyuan Zhang,Sheng-Qi Guo
Defect engineering is considered an effective means to improve the photocatalytic performance of semiconductors. However, current research on defects mainly focuses on single atom vacancies, lacking research on atomic vacancy pairs. In this work, we used SnS 2 as the research model and constructed SnS 2 nanostructures with rich S vacancies and dual S vacancy pairs, respectively. By comparing the photocatalytic activation O 2 performance of SnS 2 under different defect effects, it was found that dual S vacancy pairs have better performance optimization characteristics than S vacancies. Combining experiments and theoretical calculations, it is confirmed that dual S vacancy pairs have significant advantages over S vacancies in regulating the band structure, improving the separation efficiency of photogenerated charges and the migration rate of charge carriers, as well as activating the interface reaction of O 2 . In addition, when the catalyst is used for the removal of organic matter in water, it can be found that the optimization effect of dual defects on performance has good sustainability. This work contributes to a deeper understanding of the application scope of defect engineering and provides new ideas for the development of highly active photocatalysts.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Xiaoning Meng,Mingshu Bi,Qiuping Xiao,Wei Gao
With the emergence of hydrogen economy worldwide and the increase of safety problems caused by the highly flammable and explosive characteristics of hydrogen (H 2 ), it is urgent to develop the portable sensors that can sensitively and quickly detect H 2 leaks. In this work, the H 2 sensing characteristics of Pd/SnS 2 /SnO 2 nanocomposites synthesized via hydrothermal route as well as impregnation route were systematically investigated for the first time. The influence of different SnS 2 and Pd loading on the H 2 sensing performances of SnO 2 nanoparticles was revealed by varying the addition levels of thiourea and palladium chloride. The H 2 sensing experimental results demonstrated that SnS 2 and Pd modification can greatly enhance the sensing capabilities of SnO 2 , where 1.0 at% Pd/SnS 2 /SnO 2 sensor exhibited high response (95) and rapid response/recovery time (1/9 s) to 500 ppm H 2 at 300 ℃, thus outperforming the current reported sensing performances of SnO 2 -based H 2 sensors. The superior sensing characteristics of Pd/SnS 2 /SnO 2 were attributed to the simultaneous synergistic effect of the three components. This study will supply a rational strategy for designing high sensitive and rapid response H 2 sensors.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2024
·
IF 15.7
Wenrou Tian,Jun Han,Najun Li,Dongyun Chen,Qingfeng Xu,Hua Li,Jianmei Lu
Heterojunction has been widely used in vibration-driven piezocatalysis for enhanced charges separation, while the weak interfaces seriously affect the efficiency during mechanical deformations due to prepared by traditional step-by-step methods. Herein, the intimate contact interfaces with shared S atoms are ingeniously constructed in SnS 2 /SnS anchored on porous carbon by effective interface engineering, which is in-situ derived from temperature-dependent self-transformation of SnS 2 . Benefiting from intimate contact interfaces, the piezoelectricity is remarkably improved due to the larger interfacial dipole moment caused by uneven distribution of charges. Importantly, vibration-induced piezoelectric polarization field strengthens the interfacial electric field to further promote the separation and migration of charges. The dynamic charges then transfer in porous carbon with high conductivity and adsorption for significantly improved piezocatalytic activity. The degradation efficiency of bisphenol A (BPA) is 6.3 times higher than SnS 2 and H 2 evolution rate is increased by 3.8 times. Compared with SnS 2 /SnS prepared by two-step solvothermal method, the degradation efficiency of BPA and H 2 evolution activity are increased by 3 and 2 times, respectively. It provides a theoretical guidance for developing various multiphase structural piezocatalyst with strong interface interactions to improve the piezocatalytic efficiency.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2022
·Vol. 219
·期 22
·2200334
·
IF 2.17
Tao Jin,Chengbao Liu,Feng Chen,Junchao Qian,Yongbin Qiu,Xianrong Meng,Zhigang Chen
Photocatalytic degradation of organic pollutants is considered an ideal method to solve the global environmental pollution problem. In this method, photocatalytic materials are regarded as the key factor. As an n-type photocatalytic material, graphitic carbon nitride (g-C 3 N 4 ) has attracted much attention due to its suitable bandgap, nontoxicity, and high photostability. However, g-C 3 N 4 still has defects such as insufficient visible light absorption, low specific surface area, and easy recombination of photogenerated electron–hole pairs, which lead to the poor photocatalytic performance of g-C 3 N 4 . Herein, to solve the above problems, thiourea, lemon juice, and tin chloride pentahydrate are used as precursors, while carbon quantum dots (CQDs) are used as electron mediators, and the third phase SnS 2 is introduced by a hydrothermal and ultrasonic composite method. SnS 2 /CQDs/g-C 3 N 4 composites with Z-type heterojunction are successfully prepared. The results show that the SnS 2 /CQDs/g-C 3 N 4 has a 2D0D2D structure, which effectively inhibits the recombination of photogenerated electron–hole pairs, making the material have better photocatalytic degradation activity for Rhodamine B (RhB). When the mass ratio of SnS 2 is 15%, the photocatalytic degradation efficiency of RhB by the composite reaches the best, which is 87.8%. After four cycles, the photocatalytic degradation efficiency of the 15% SnS 2 /CQDs/g-C 3 N 4 composite still remains at 82.9%.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Advanced Energy and Sustainability Research
·
2025
·
IF 5.7
Han Yang,Changsheng Min,Chao Li,Yuan Yu,Bangzhi Ge,Chongjian Zhou
Thermal transport in crystals highly depends on the vibrations of the lattice. If the intrinsic period of the lattice is disrupted, phonon transport within the lattice will be suppressed. Herein, a strategy is reported for thermal conductivity suppression in the 2D van der Waals semiconductor SnS 2 by layer period engineering. The stacking period for SnS 2 layers is broken by mechanical alloying combined with spark plasma sintering. Double Cs-corrected transmission electron microscopy reveals that 2H and 4H SnS 2 structures coexist by stacking along the c -axis, demonstrating the long-range ordered but short-range disordered arrangement. As a result, the lattice thermal conductivity of SnS 2 decreases from ≈2.0 to ≈1.18 W m −1 K −1 at 673 K. The strategy promises the potential application of SnS 2 in scenarios where low thermal conductivity is essential such as thermoelectric materials.
研究领域:
材料科学
·
热力学
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Lu Tang,Kechen Zhou,Huiyu Su,Jiahong Tang,Qirui Wu,Lingfei Luo,Xiang Guo,Dawen Zeng
Detecting nitrogen dioxide (NO2) at room temperature (RT) is crucial for advancing environmental monitoring technologies, enabling efficient and practical air quality assessment. Two-dimensional (2D) MXene nanomaterials, recognized for their large specific surface area (SSA), abundant functional groups, and tunable electrical properties, have attracted considerable attention as promising candidates for room temperature gas-sensing applications. However, despite their potential, challenges, such as low gas adsorption efficiency, limited sensitivity, and poor selectivity, hinder their broader application and development, highlighting the need for further research. Here, we introduce a zero-dimensional (0D)/2D heterojunction gas-sensitive structure by synthesizing SnS2 quantum dot (QD)-sensitized Ti3C2Tx MXene nanocomposites via a hydrothermal method. The carefully designed gas sensor exhibits a significantly enhanced response value (RV) of 5.83% for 10 ppm of NO2 and a low detection limit of 500 ppb at RT, achieving an RV that is 5.8 times higher than that of pure Ti3C2Tx. Additionally, the sensor demonstrates high sensitivity (0.76 ppm–1 in the 0.5–5 ppm range), excellent selectivity, and outstanding stability, with a performance degradation of only 3.2% over 4 weeks. The exceptional performance arises from the synergistic effects of the quantum confinement properties of SnS2 QDs and the superior conductivity of Ti3C2Tx, which together provide abundant active sites for gas adsorption and facilitate efficient charge transfer pathways. Furthermore, the formation of the heterojunction modulates the resistance, enhancing room temperature sensing capabilities. The synthesized nanomaterials offer significant potential for advancing the design of heterostructures that integrate 0D QDs with 2D nanomaterials, paving the way for highly efficient NO2 detection at RT. Moreover, maintaining an optimal operating temperature further enhances the accuracy and reliability of real-time NO2 monitoring systems.
研究领域:
材料科学
·
环境科学
✓ 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）