CHEMICAL PHYSICS
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2024
·
IF 2
Siyu Xu,Junfeng Lu,Dingfeng Jin,Hongxiao Jin
Tin disulfide (SnS 2 ), is an emerging two-dimensional metal sulfide material with high electronegativity and suitable bandgap, making it a promising candidate for NO 2 sensors. In this study, SnS 2 thin sections with different exposed crystal planes were prepared from two different sulfur sources, and the effects of crystal sections on the growth of SnS 2 and its NO 2 sensing performance were studied. SnS 2 micro sheets with (1 0 1) exposed crystal plane (SnS 2 -M) showed a smaller specific surface area than SnS 2 nano sheets with (1 0 0) exposed crystal plane (SnS 2 -N). However, the crystal structure grown along the (1 0 1) plane direction provides a more favorable pathway for NO 2 molecules, enhancing gas molecule adsorption and desorption, and exhibiting excellent performance in terms of sensitivity, repeatability, and response time. The gas sensing performance is not only influenced by the specific surface area but also significantly differs due to the exposure of different crystal planes. This result provides a certain reference value for the preparation of SnS 2 with different crystal plane orientations for enhanced NO 2 sensing.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2023
·
IF 3
Jianfeng Tan,Weijia Ma,Gaoxiang Meng,Congkui Tian,Yin Wang,Yan Wang,Zhuo Liu
Room temperature (RT) gas sensors have been widely studied because of their low power consumption and easy integration. The low response value and long response/recovery time of gas-sensitive materials have hindered the development of RT gas sensors. In this paper, Bi-doped SnS 2 nanoflowers with high surface area were tailored by a novel hydrothermal method. A fast response/recovery speed of 52/100 s and high response (5.58) were obtained from 3 % Bi doped SnS 2 nanoflower for 1 ppm NO 2 . This work provides a strategy to fabricate RT gas sensors based on layered metal sulfide.
研究领域:
材料科学
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环境监测
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 15
·12447-12456
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IF 2.779
Li Z. L.,Li S. Y.,Liu X. R.,Yuan S. Y.,Zhang Z. R.,Feng E. K.,Yang Z. M.,Han X. N.
In view of photodegradation of antibiotics based on SnS 2 , larger specific surface area SnS 2 microcubes remain rare. In this paper, shape-controlled SnS 2 microcubes with defects were successfully prepared via a simple template-engaged strategy. The obtained microcubes manifested high specific surface area (43.80 m 2 g −1 ). The degradation performance for Rhodamine B (RhB) was investigated in detail, including the effect of parameters, like different photocatalysts, pH, and catalyst dosage. The results indicated that degradation efficiency was 99.90% under visible light within 80 min. Moreover, the degradation efficiency was 79% after the four successive cycles.
研究领域:
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
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2022
·
IF 7.926
Kexin Lv,Hengcheng Wan,Qiang He,Yi Li
The shortage of fresh water resources has become an unavoidable problem in social and economic development. It is desirable and urgent to deal with the increasingly serious environmental pollution based on sustainable energy. Herein, we developed oxygen-injected SnS 2 (SnS 2−x O x ) nanosheets to acquire enhanced photocatalytic degradation performance on dye-containing wastewater. Mechanism studies proved that O atoms optimize the electronic structure of SnS 2 , which were further verified by density functional theory (DFT) calculation. As a result, SnS 2−x O x nanosheets exhibited that the typical dye removal efficiency reached at ∼93%, ∼91% and ∼85% toward RhB , GR and MB , respectively with worth stability. This work not only exploited a high degradation performance photocatalyst for water purification , but also lay a foundation for the atomic functionalization of photocatalysts.
研究领域:
环境科学
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材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2023
·
IF 8.4
Huimin Yang,Zhenming Du,Yazhou Yang,Xiang Li,Qirui Wu,Jiahong Tang,Xiaoxia Wang,Dawen Zeng
Nitrogen dioxide (NO 2 ) is a common gas that can cause irreversible damage to human health, emphasizing the essentiality of developing highly sensitive NO 2 sensors with good selectivity and low consumption. Here, a facile in–situ cation exchange method was employed to successfully synthesize interlayer expansion Ag intercalated SnS 2 with S vacancies for NO 2 gas sensing. The presence of S vacancies strongly improves the electronic structure of SnS 2 and significantly facilitates the interaction of NO 2 with the sensor. Moreover, the interlayer spacing of SnS 2 is expanded by 0.48 Å after Ag intercalation, prompting diffusion behavior of NO 2 molecules between the interlayers. Benefiting from the factors above, SnS 2 –Ag exhibited excellent gas sensing performance for NO 2 with a high response to 5 ppm NO 2 (response value = 8.37) and detection limits as low as 200 ppb at a low temperature of 100 °C. This work combines defect engineering with interlayer engineering to provide a new perspective for extending the application of SnS 2 gas sensors.
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
NANO
·
2016
·
IF 0.951
Hui Meng,Tingting Wang,Hongbin Chen,Yizhu Liu,Xiang Yu,Yi Zhu,Yuanming Zhang
BiOCl/SnS 2 core-shell heterojunction is prepared by a facile and economic hydrothermal method. The obtained BiOCl/SnS 2 heterojunction displays high photocatalytic activity in the degradation of Rhodamine B (RhB). The high performance is explained by the fast separation of the photoinduced electron–hole pairs promoted by the heterojunction. The cycle life of the heterojunction is also improved compared with individual BiOCl or SnS 2 .
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
MATERIALS LETTERS
·
2021
·
IF 3.423
Jing Sun,Wei Xiong,Jiawei Zhang,Yong Zhang,Bin Xie
The power consumption of the chemical resistive gas sensor should be considered when its performance is developed. One of the most effective methods for reducing the power consumption is to make the gas sensor work at room temperature. A tin disulfide (SnS 2 ) nanoparticle-based gas sensor with high sensitivity and fast recovery is proposed in this paper for detecting the nitrogen dioxide (NO 2 ). The experimental results show that the SnS 2 nanoparticle-based gas sensor has excellent gas sensing performance at room temperature, including high sensitivity, rapid response/recovery speed (28 s/1 s), high selectivity and good repeatability and reversibility. The main reason for the excellent performance of the SnS 2 nanoparticle-based gas sensor is mainly attributed to the unique physical affinity and favorable electronic band positions of the SnS 2 material, which promotes the physisorption and charge transfer of NO 2 gas molecules. It is expected that this work can provide guidance for the real-time rapid detection of NO 2 at room temperature.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Geshuang Chen,Xiang Yao,Qichen Cao,Shouxiang Ding,Jinde He,Suqing Wang
To solve the problems of insufficient conductivity and volume expansion of SnS 2 during cycling when applied as anode for sodium-ion batteries (SIBs), we designed flexible and self-standing SnS 2 /carbon nanofibers (SnS 2 /CNFs) film by electrospinning technology and post sulfuration, in which the ultrafine SnS 2 nanoparticles (∼5 nm) are preganated in the carbon nanofibers. The three-dimensional carbon nanofibers serve as flexible scaffold with high electrical conductivity to buffer the aggregation and pulverization of SnS 2 particles. The obtained flexible SnS 2 /CNFs film can be directly used as anode for SIBs without adding binder and carbon additive, and exhibits excellent electrochemical performance. The SnS 2 /CNFs delivers a high capacity of 570.8 mAh g −1 at 0.2 A g −1 . Even at a high rate of 5 A g −1 , a high capacity of 247.1 mAh g −1 is still achieved. It also maintains 378.9 mAh g −1 after 100 cycles at 0.5 A g −1 .
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2022
·
IF 7.139
Qingxi Zhai,Hurong Ji,Yilun Ren,Hao Wu,Biao Wang,Fengqi Li,Yujie Ma,Xiangkang Meng
Designing and synthesizing high-activity, durable, and low-cost catalysts for the electrochemically transformation of water to hydrogen are vitally important to future energy systems . Herein, a simple but effective strategy for manganese-metal-heteroatom doping is adopted to intrinsically elevate the electrocatalytic activities of SnS 2 nanosheets by a facile two steps hydrothermal-sulfurization approach. Electrocatalytic hydrogen evolution (HER) performance of Mn–SnS 2 nanosheets grown on 3D nickel foam (Mn–SnS 2 /NF) is efficiently optimized since the dopants and defects endow the Mn–SnS 2 /NF vast active sites. An overpotential as low as 71 mV is required to drive a current density of 10 mA/cm 2 with a low Tafel slope of 72 mV dec −1 in alkaline environment (1 M KOH). In addition, the Mn–SnS 2 /NF exhibits prominent stability in 1 M KOH electrolyte, which is an indispensable index for the potential HER electrocatalysts . The present work demonstrates that the heteroatom manganese doping strategy renders a meaningful route for synthesizing cost-efficient HER electrocatalysts in alkaline condition.
研究领域:
材料科学
·
能源化学
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2012
·Vol. 14
·期 17
·5627-5633
·
IF 3.842
Xianlong Zhou,Tengfei Zhou,Juncheng Hu,Jinlin Li
Novel SnO2 nanoparticle-decorated SnS2 nanosheets were synthesized via a one-pot solvothermal process using SnCl4·5H2O and CH4N2S as precursors. SnS2@SnO2 nanosheets were characterized by XRD, TEM, FESEM, XPS and UV-vis diffuse reflectance spectra (DRS). The band-gap of SnO2@SnS2 can be easily tuned by the controlled experimental strategy. Anisole and ethanol with different volume ratios were used as binary solvent to tune the composition of SnS2@SnO2 nanocomposites (NCs) continuously and the composites gradually change from hexagonal SnS2 into tetragonal SnO2. All of the SnS2@SnO2 nanosheets exhibited enhanced visible light photocatalytic activity, which was remarkably superior to SnS2, SnO2 and Degussa P-25. The obtained SnS2@SnO2 NCs with Vethanol/Vanisole = 1 : 2 showed the best photocatalytic capability. Furthermore, the formation mechanism of SnS2@SnO2 nanosheets has also been discussed.
研究领域:
材料科学
·
光催化
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Yang Lu,Jiafeng Zhang,Wei Wang,Yizhuo Fan,Caixia Liu,Jingran Zhou,Dali Liu,Shengping Ruan
Two-dimensional metal sulfide semiconductor materials have received a lot of attention recently due to their large surface-to-volume ratio, outstanding chemical properties, and suitable band gap, and possess the potential in the application of gas sensors. In this work, SnS 2 nanosheets were synthesized by a simple hydrothermal method and successfully modified with Au, Pd, and Au-Pd nanoparticles on their surfaces using reducing agents for xylene detection. The experimental results show that the gas-sensitive performance of the sensor can be significantly improved by modifying Au-Pd nanoparticles on the surface of SnS 2 nanosheets , which can be attributed to the synergistic effect of the bimetal and the catalytic properties of bimetallic systems. The response of the prepared sensor is more than ten times higher than that of the pure material. In addition, the optimal operating temperature of the sensor modified by Au-Pd nanoparticles was also decreased compared to that of the sensor prepared by SnS 2 . The outstanding performance makes Au-Pd nanoparticles-modified SnS 2 gas sensor a great potential candidate for xylene detection.
研究领域:
材料科学
·
传感器技术
·
化学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Bonan Li,Xi Zhang,Mengxue Chen,Xi Huang,Xiao Fang,Yanfang Yang,Yuanyuan Li,Baochun Ma,Yong Ding
Single-component metallic Te photocatalysts suffer from rapid oxidation in air, while sulfide-based SnS 2 is prone to photocorrosion under prolonged illumination, both severely limiting their photocatalytic efficiency. To address these challenges, we designed an S-scheme heterojunction by uniformly loading SnS 2 nanosheets onto Te nanowires (Te@SnS 2 ). This heterostructure not only suppresses Te oxidation but also facilitates efficient charge separation via the S-scheme mechanism. Further integration of [Co 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] 10- (Co4POM) onto Te@SnS 2 yields the Te@SnS 2 -Co4POM photocatalyst, where Co4POM serves as a hole co-catalyst to enhance activity and inhibit SnS 2 photocorrosion. The system employs two discrete charge-transfer channels, with electrons separated at the Te@SnS 2 S-scheme heterojunction and holes migrating from SnS 2 to Co4POM, thereby spatially separating reduction and oxidation sites and markedly enhancing carrier separation, catalytic activity and durability. The multi-channel charge transfer pathways enabled by Te@SnS 2 -Co4POM synergize component interactions, achieving a CO production rate of 92.6 μmol g −1 h −1 with 97.7 % selectivity in gas-solid CO 2 reduction, alongside effective coupling of CO 2 photoreduction and water photooxidation. In situ DRIFTS, quasi-in situ XPS and irradiated KPFM studies confirm the S-scheme electron transfer in Te@SnS 2 and reveal Co4POM’s role in establishing multi-channel charge transport. This work demonstrates a rational strategy to overcome stability and efficiency bottlenecks in photocatalysis through multi-component charge channel engineering.
研究领域:
材料科学
·
光催化
·
环境科学
✓ 已验证
DOI
高影响因子
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