Nanoscale
·
2021
·Vol. 13
·期 10
·5489-5496
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IF 7.79
Zhiwei Wang,Xiang Wang,Qian Chen,Xiaoshan Wang,Xiao Huang,Wei Huang
The spatial arrangement of heterostructures based on two-dimensional layered materials is important in controlling their electronic and optoelectronic properties. In this contribution, by controlling the reaction kinetics and thus the nucleation and growth sequence of p-type SnS and metallic NbS2, controllable preparation of both SnS@NbS2 core@shell and SnS/NbS2 lateral heterostructures was realized. The SnS@NbS2 core@shell heterostructures were further applied in photodetectors, and interestingly, a negative photoresponse was observed due to the Seebeck effect exerted on the NbS2 shell. Compared with the pure metallic NbS2, the SnS@NbS2 core@shell heterostructures showed a 15 times increased signal-to-noise ratio and much improved photocurrent stability, largely due to the charge and heat transfer between the SnS core and NbS2 shell.
研究领域:
材料科学
·
光电材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
·
2024
·
IF 3.5
Zhiwei Lu,Xiaoxiao Pei,Tingting Wang,Kewei Gu,Nan Yu,Mingsong Wang,Junli Wang
Tin dioxide (SnO2)-based electronic materials and gas sensors have attracted extensive attention from academia and industry. Herein we report the preparation of two-dimensional (2D) porous SnO2 flakes by thermal oxidation of 2D SnS flakes that serve as a self-sacrificial template. An oxidation-enabled, temperature-dependent matter conversion from SnS through three-phase SnS–SnS2–SnO2 (400 °C) and two-phase SnS2–SnO2 (600 °C) to pure-phase SnO2 (≥800 °C) is disclosed by means of combined XRD, TG-DSC and XPS studies. Meanwhile, the associated chemical reactions and the mass and heat changes during this solid-state conversion process are clarified. The as-prepared 2D SnO2 flakes exhibit structural porosity with tunable pore sizes and crystallite sizes/crystallinity, resulting in superior potential for NO2 sensing. At the optimized operating temperature of 200 °C, the prototype gas sensors made of porous SnO2 flakes show competitive sensing parameters in a broad NO2 concentration range of 50 ppb–10 ppm in terms of high response, faster response/recovery speeds, and good selectivity and stability. A sensing mechanism involving the adsorption and desorption of NO2/O2 molecules and the possible surface reactions is further rationalized for the SnO2 NO2 gas sensors.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS
·
2019
·Vol. 19
·期 11
·2581
·
IF 3.031
Wei Shan,Zhengqian Fu,Mingsheng Ma,Zhifu Liu,Zhenggang Xue,Jiaqiang Xu,Faqiang Zhang,Yongxiang Li
Tin(II) monosulfide (SnS) nanosheets were synthesized using SnCl4•5H2O and S powders as raw materials in the presence of H2O via a facile chemical bath method. Orthorhombic phase SnS nanosheets with a thickness of ~100 nm and lateral dimensions of 2~10 μm were obtained by controlling the synthesis parameters. The formation of a SnO2intermediate is key to the valence reduction of Sn ions (from IV to II) and the formation of SnS. The gas sensors fabricated from SnS nanosheets exhibited an excellent response of 14.86 to 100 ppm ethanol vapor when operating at 160 °C, as well as fast response and recovery times of 23 s and 26 s, respectively. The sensors showed excellent selectivity for the detection of ethanol over acetone, methanol, and ammonia gases, which indicates the SnS nanosheets are promising for high-performance ethanol gas sensing applications.Keywords:gas sensors;SnS nanosheets;chemical bath synthesis;oleylamine;ethanol sensing
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Jia-Feng Xu,Jia-Cheng Wu,Lu-Jiong Ruan,Wei Tian,Xi Yan,Yan Chen,Xiao-Jing Guo,Wan-Zhong Lang
Coupling photocatalysis with membrane separation technology becomes one pioneering method to solve the membrane fouling . In this study, Ag@SnS photocatalyst was synthesized and blended with polyvinylidene fluoride (PVDF) to fabricate Ag@SnS/PVDF composite membranes via non-solvent induce phase separation (NIPS) method. The results show that with the addition of Ag@SnS, water flux of Ag@SnS/PVDF hybrid membranes increases due to the enhanced membrane hydrophilicity and increased porosity. The optimal hybrid membrane (MAS-2) exhibits the rejection rate of 97.0 % and 95.4 % for BSA and HA accompanied with a water permeance of 578.5 L m −2 h −1 bar −1 . Moreover, MAS-2 membrane reveals excellent self-cleaning ability by photodegradation of HA on membrane surface , and its flux recovery rate (FRR) can achieve 91.7 % after UV irradiation and 95.8 % after 3 h natural sunlight irradiation via photocatalysis regeneration. The heterostructure of Ag@SnS can assist separation of photoinduced electrons and holes by transferring photoinduced electrons to Ag nanoparticles with enhanced photocatalytic activity. After three cycles, the FRR can still reach around 90.0 %, revealing its outstanding cleaning ability. Therefore, the Ag@SnS/PVDF membranes have a foreseeable potential in the field of water treatment due to its high flux performance, self-cleaning ability via photocatalysis process.
研究领域:
环境科学
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材料科学
✓ 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
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 10
·1-12
·
IF 2.8
Li Ziheng,Zhang Mingxue,Zhang Zeyu,Hao Hongshun,Yan Shuang
Two-dimensional chalcogenides have made significant advances as chemiresistive gas sensors due to their high sensing response and low power consumption. However, their inherent morphological complexity, low thermal oxidation temperature, and poor conductivity pose as major obstacles to practical application. In this study, we introduced a synthesis method in combination of hydrothermal reaction and heat treatment to fabricate SnS-based sensing materials with different forms of two-dimensional nanostructure. During preparation, SnS 2 with different morphologies were firstly synthesized via hydrothermal reaction, followed by thermal oxidation and nitrogen calcination, flower-like SnS nanostructure, and nanoflake SnS–SnO 2 composite, respectively. The samples synthesized by this method demonstrate improved crystallinity, which can overcome the obstacle of poor conductivity. In comparison, the flower-like SnS nanostructure assembled by ultra-thin nanosheets demonstrates improved gas-sensitive performance over nanoflake SnS–SnO 2 composite. At the working temperature of 200 °C, the SnS sensor shows a response value as high as 13.3- to 100-ppm ethanol. Besides, the sensor exhibits stable sensing performance and excellent recovery characteristics in response to ethanol. The preparation method proposed in this paper provides an effective approach for the development of high-performance two-dimensional chalcogenide gas sensing materials.
研究领域:
材料科学
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化学传感器
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Wei-Xiang Cheng,Ting-Ting Mao,Yi-Zhao Chen,Shuai-Fu Cui,Jing Chen,Dao-Ren Deng,Ru-Ming Feng,Song-Yi Liao,Yong-Gang Min
In this paper, cubic ZnSn(OH) 6 with MXene were firstly in-situ synthesized, and subsequently vulcanized and etched to obtain hollow SnS nanoboxes with MXene coating by carbon layer (referred to as H-SnS/MXene@C). The composition and surface chemical state of H-SnS/MXene@C were characterized by XRD and XPS , respectively. The microscopic morphology of H-SnS/MXene@C was analyzed and characterized in detail by SEM and TEM, and the results show that the hollow SnS nano-boxes formed an effective connection with the MXene nanosheets . When used as LIBs anode, the H-SnS/MXene@C maintained ∼707 mAh/g after 200 cycles at 0.5 A/g current density. As a NIBs anode material, the H-SnS/MXene@C delivered ∼402 mAh/g after 150 cycles at 0.5 A/g current density. In addition, a detail simulation/calculation revealed that H-SnS/MXene@C demonstrated a higher pseudocapacitance (83.2 % for LIBs and 74.4 % for NIBs at a scan rate of 2 mV/s, respectively). The synergistic effect of the highly conductive MXene and the three-dimensional hollow cubic structure could effectively provide an efficient channel for charge transfer and ionic diffusion in H-SnS/MXene@C anode.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Tongtong Cheng,Yiqi Tang,Heping Zhang,Xingqi Song,Gongcheng Xu,Ying Zhou,Xinghui Hou
SnO 2 is an n-type wide band gap (E g = 3.6 eV) metal oxide semiconductor (MOS) that has been widely studied, due to its low cost, non-toxicity and simple preparation process, and it has become the most important sensitive material for the preparation of gas sensors. However, the SnO 2 sensor still has some defects of high operating temperature and low response, which hinders its practical application. In this work, SnO 2 /SnS composites were prepared by hydrothermally growing SnS nanoparticles on the surface of electrospun hollow SnO 2 nanotubes with high porosity. Results show that the SnO 2 /SnS gas sensor based on the heterojunction has a much higher response of 375 to 50 ppm NO at 130 ℃ than that of pure SnO 2 sensor, as well as rapid response/recovery (26 s/90 s), excellent selectivity (12 times that of H 2 S), repeatability and stability (225–250 to 20 ppm NO). Its enhanced sensing property may be attributed to the synergistic effect of the formation of homologous cations heterojunction and unique micro-structure of SnO 2 /SnS composite, which could facilitate efficient charge transfer and provide more active sites (such as vacancy, point defects) for NO adsorption and reaction. This experiment provides a new idea for the development of SnO 2 gas sensors with excellent properties, which can meet the detection of toxic and harmful gas.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
2D Materials
·
2024
·Vol. 11
·期 2
·025024
·
IF 4.5
Bo Zhang,Yunjie Liu,Bing Hu,Fuhai Guo,Mingcong Zhang,Siqi Li,Weizhuo Yu,Lanzhong Hao
Due to its large absorption coefficient and high carrier mobility, SnS exhibits strong promise in the area of optoelectronic devices. Nevertheless, the fabrication of large-area, high-quality films for SnS photodetectors (PDs) with superior photoresponse remains a formidable task, seriously limiting its further practical application. In the present study, we report a superior-performance broadband PD founded on the epitaxial SnS film. Large-area uniform SnS films were grown epitaxially on (100)-oriented KBr using magnetron sputtering technique, further exfoliated, and transferred in a wafer size to fabricated two-ends PD devices. Benefitting from high crystallization and unique photoconductive-bolometric coupling effect, the two modes of operation exhibit a wide range of spectral responses from the visible to near-infrared wavelength (405–1920 nm). Particularly noteworthy is the SnS device fabricated, which demonstrates an impressive responsivity of 95.5 A W−1 and a detectivity of 7.8 × 1011 Jones, outperforming other devices by 1–2 orders of magnitude. In addition, SnS PD shows excellent environmental durability. This work provides a robust approach to develop high-performance broadband SnS PDs, while simultaneously offering deep insight into the light–matter interactions.
研究领域:
材料科学
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光学工程
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Guilong Liu,Mingyuan Xu,Ruping Cao,Zihan Zhao,Wenzhuo Yuan,Yong Liu,Ang Cao,Lijuan Wang,Xianming Liu
SnS with high theoretical capacity, large lamellar spacing, and favorable voltage plateau is considered as a highly prospective anode material for sodium-ion batteries (SIBs). Nevertheless, the unsatisfied intrinsic conductivity and damaging volume variation during cycles restricted its specific capacity and potential application. In this work, a synergistic sodium storage of interfacial engineering and Na 2 S adsorption was proposed to boost the electrochemical kinetics of SnS by vertically growing SnS@C nanosheets on MBenes. The experimental and theoretical calculation results verified that the nanosheets, heterogeneous interface, and charge transfer between Mo 4/3 B 2 T x and SnS offered rapid ion diffusion pathways and ameliorated the intrinsic conductivity, promoting the electrochemical kinetics. The sufficient sulfur vacancies and strong adsorption ability of Na 2 S on MBenes provided supplementary active sites for ion adsorption and suppressed the shuttle effect of Na 2 S, improving the electrochemical capacity and reversibility. Consequently, the MBenes-SnS@C anode delivered high capacities of 411 mAh g −1 at 1 A g −1 and 420 mAh g −1 after 100 cycles at 0.5 A g −1 . The synergistic sodium storage mechanism arising from interfacial effects and Na 2 S adsorption offered novel insights for the rational design of high-performance transition metal sulfide anodes for SIBs.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy Technology
·
2023
·Vol. 11
·期 6
·2201284
·
IF 3.8
Lianjie Li,Ke Zeng,Zhen He,Jianqiang Xue,Xuan Liu,Anmin Liu,Liguo Gao,Tingli Ma
The solar-driven interfacial evaporation system has attracted much attention in recent years because it avoids dissipating a large amount of energy into the bulk water. As one of the photothermal materials in solar-driven interfacial evaporation system, wood has been widely applied due to its excellent properties, such as lower density, open micropores, capillary-induced hydrophilic nature, and low thermal conductivity. However, the complex processing technology and relatively low efficiency of wood-based photothermal materials limit their application. Herein, to solve these problems, solvothermal and immersion treatment methods by depositing tin sulfide and silver nanoparticles (AgNPs) have been demonstrated. The solar absorption rate of wood-SnS-AgNPs is higher than 98% in a wide wavelength range (200–2,500 nm). Results demonstrate that an evaporation rate of 1.53 kg m −2 h −1 and evaporation efficiency (90.12%) are achieved under 1-sun illumination (100 mW cm −2 ). The harsh environmental test indicates that the solar-driven interfacial evaporation system based on wood-SnS-AgNPs has excellent structural stability and purification ability of seawater.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
·
2023
·
IF 5.3
Chenxi Yue,Dan He,Long Qing,Yi Tang,Xianguang Zeng,Wei Jiao,Naiqiang Liu,Yu He,Wei Zhao,Jian Chen
The significant capacity loss and pulverization caused by the dramatic increase in volume of Sn-based anodes during redox reactions severely limit their practical application in lithium-ion batteries. Herein, with the ultralong cycle life and high capacity Sn-based compounds (SnS-C/NS@CNFs), a self-supporting anode was prepared by electrospinning followed by the calcination scheme, which is a superb material for lithium storage since the buffer matrix reduces the volume expansion of Sn. In this strategy, SnS nanoparticles are scattered into a porous carbon framework using Sn-MOFs as a pore-forming template, which allows for easier extraction–insertion of Li-ions due to their inherent layered structure. Moreover, the nitrogen and S-doped carbon nanofibers not only serve as a barrier to impede the aggregation and volume expansion of SnS during cycling but also act as electrical pathways to enhance the conductivity of the electrodes. Having profited from the desirable nanostructures, the flexible three-dimensional cross-linked nanofibers were straightly used as a self-supporting anode for LIBs, displaying ultralong cycle life (455.8 mAh/g after 1000 cycles at 1 A/g) and exceptional rate performance (481 mAh/g at 2 A/g). This work offers a reliable and efficient method for fabricating flexible self-standing and durable electrodes.
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
危险品化学品经营许可证（带存储）