ACS Applied Nano Materials
·
2025
·
IF 5.5
Zhan-Yuan Huang,Lang-Xi Ou,Zhi-Wei Zheng,Yi-Wei Wang,Xiao-Fei Zhang,Shi-Ying He,Hong-Xiu Yu,Hong-Liang Lu
The In2O3-modified ZnO@SnO2 core–shell nanosheets (NSs) were synthesized via an innovative and facile route that combines the modified hydrothermal method with an atomic layer deposition (ALD) process. The self-limiting reactions inherent to ALD facilitate precise control over the film thickness, enabling the design of well-defined core–shell nanostructures for gas-sensing applications. Evaluation of gas-sensing properties revealed that the construction of the ZnO@SnO2 core–shell heterostructure combined with In2O3 surface modification markedly improved the sensing performance. The optimized ZnO@SnO2/In2O3 sensor with a 20 nm SnO2 shell (denoted as Z@S/I-20) exhibited a high response (Ra/Rg = 148.6) toward 100 ppm ethanol at 350 °C, which was approximately 3.6 and 1.6 times higher than that of ZnO/In2O3 NSs (40.3) and unmodified ZnO@SnO2 core–shell NSs with 20 nm SnO2 (91.6), respectively. Furthermore, the Z@S/I-20 gas sensor demonstrated a response/recovery time of 140.2:36.6 s, remarkable selectivity toward ethanol, and an ultralow detection limit of 64 ppb. The significantly enhanced sensing performance is attributed to the synergistic effect of heterojunction formation, the porous mesh morphology of In2O3 nanowires, and the optimized SnO2 shell thickness, as systematically discussed in this work. These findings highlight the potential of the proposed synthesis route and sensor design for the development of high-performance microelectromechanical system (MEMS)-based gas sensors that can be applied to ethanol detection.
研究领域:
材料科学
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纳米技术
·
传感器
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Xiaohui Ma,Qixuan Qin,Nan Zhang,Chuan Chen,Xin Liu,Yu Chen,Chuannan Li,Shengping Ruan
Dodecahedron-like SnO 2 nanomaterial was synthesized via a solvothermal method under mild reaction condition. The morphological and structural characterization results indicated that the as-prepare dodecahedral SnO 2 nanocrystallines with the average length of 130 nm and width of 45 nm were partially surrounded by high surface-energy {221} facets. The gas-sensing performance of the sample was investigated and the experiment results showed that the sensor had a good sensitivity to sulfur dioxide (SO 2 ) at 183 °C. To 800 ppb SO 2 , the response could reach 1.32 and the response time was about 10 s. The good SO 2 -sensing performance of SnO 2 nanocrystallines was closely related to the high surface-energy {221} facets whose surface possessed more dangling bonds and the corresponding SO 2 -sensing mechanism was discussed.
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
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Ao Zhang,Yan Zhang,Weihua Cheng,Xinran Li,Kai Chen,Fangjie Li,Dongye Yang
This study presents a novel strategy for the rapid detection of hydrogen and ammonia gases through the synthesis of a composite material that integrates SnO 2 and TiO 2 into an n-n heterostructure on the surface of two-dimensional layered Ti 3 C 2 Tx MXene. The incorporation of Pd nanoparticles significantly enhances the sensor's adsorption and sensing capabilities, particularly for hydrogen. The resulting dual-gas sensor demonstrates a pronounced linear response to hydrogen with a low detection limit of 200 ppb, along with rapid response times, excellent repeatability and long-term stability. Leveraging MXene's superior ammonia adsorption properties, the sensor also exhibits commendable linearity and robustness in detecting ammonia, with strong resistance to humidity-induced interference. To further improve the sensor's performance, machine learning techniques such as support vector machine (SVM) and artificial neural network (ANN) are incorporated, substantially enhancing the sensor's selectivity and sensitivity of the detection. These advancement enables the precise identification and quantification of complex gas mixtures containing hydrogen and ammonia. The sensor’s meticulously designed circuitry operates in real-time sensing mode, ensuring accurate differentiation between the two gases. This research establishes a robust foundation for the development of advanced gas sensing technology, showcasing its potential for multi-gas detection and analysis across diverse industrial and environmental applications.
研究领域:
材料科学
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传感器技术
·
人工智能
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaoyu Jia,Yuan Du,Fanyu Xie,Hongwei Li,Mei Zhang
Fiber-based supercapacitors are the potential power sources in the field of wearable electronics and energy storage textiles due to their unique advantages of electrochemical properties and mechanical flexibility, but achieving high energy density and practical energy supply still presents some challenges. In this study, we reported an approach of microfluidic assisted wet-spinning to fabricate SnO2 quantum dots encapsulated polyaniline/graphene hybrid fibers (SnO2 QDs@PGF) by incorporating uniformly polyaniline into graphene fibers and covalently bridging SnO2 quantum dots. The assembled SnO2 QDs@PGF fiber-typed flexible supercapacitors exhibit an ultralarge specific areal capacitance of 925 mF cm–2 in PVA/H2SO4, superior rate capabilities, and capacitance retention of 88% after 8000 cycles, indicating that the SnO2 QDs@PGF possess near-ideal capacitance properties, efficient ion transfer rate, and good cycling stability. In the EMITFSI/PVDF-HFP electrolyte system, SnO2 QDs@PGF realize a wide operating potential window of 2.5 V, a specific areal capacitance of 678.4 mF cm–2, and an energy density of 147.2 μWh cm–2 at 500 μW cm–2, which can be utilized to power an alarm clock, an electronic timer, and a desk lamp with a requirement of a 3 V battery. The exceptional performance of the SnO2 QDs@PGF can be attributed to the molecular-level homogeneous composite of granular polyaniline and graphene nanosheets and the interfacial C-O-Sn covalent coupling strategy employed between SnO2 QDs and PGF. These avenues not only effectively prevent the undesirable restacking of graphene nanosheets but also increase the interlayer electroactive sites, ordered ion diffusion channels, and strong interfacial charge transfer.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Xiu Yang,Ying Zhang,Yongcai Zhang,Tianxiao Peng,Aiping Zhu
Conjugated derivative (CPVC) from thermal dehydrochlorination of polyvinyl chloride (PVC) was tried to modify SnO 2 nanoparticles for developing a high efficiency visible-light-activated photocatalyst for the treatment of Cr(VI) wastewaters. CPVC modified SnO 2 nanoparticles (SnO 2 /CPVC) were synthesized via the following procedures: (i) mixing of SnO 2 nanoparticles and PVC in tetrahydrofuran solution, then evaporation of tetrahydrofuran to produce SnO 2 /PVC nanocomposite, and (ii) thermal treatment of the SnO 2 /PVC nanocomposite at 150 °C for 2 h to transform its PVC into conjugated CPVC. The as-synthesized products were characterized using X-ray diffraction, Raman spectroscopy, high resolution transmission electron microscopy, UV–vis diffuse reflectance spectra, transient photocurrent measurement, and electrochemical impedance spectroscopy. The photocatalytic tests indicated that SnO 2 /CPVC nanocomposite had exceptionally higher (about 14 times) photocatalytic activity than SnO 2 nanoparticles in the reduction of aqueous Cr(VI) under visible-light (λ > 420 nm) irradiation. This work is the first report of SnO 2 /CPVC as photocatalyst for the reduction of Cr(VI), and also useful for developing new efficient visible-light-activated photocatalysts using low cost polyvinyl chloride.
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
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Lin Yang,Baoning Wang,Chunxiang Dall’Agnese,Yohan Dall’Agnese,Gang Chen,Ajay Kumar Jena,Xiao-Feng Wang,Tsutomu Miyasaka
Tuning the electrical conductivity of two-dimensional (2D) MXenes by modifying the termination groups and controlled oxidation offers great potential for photovoltaic applications. Here, in-situ-oxidized Ti3C2Tx (O–Ti3C2Tx) MXene was introduced to form a nanoscale heterojunction with SnO2 that was applied as an electron transport layer (ETL) in a MAPbI3 perovskite solar cell (PSC). Taking advantage of the transition from metallicity to semiconductivity during the oxidation process of Ti3C2Tx, the properties of Ti3C2Tx could be tuned to have its energy levels well matched with the perovskite. Besides, the insertion of O–Ti3C2Tx improved the electron mobility of the SnO2 ETL. Hence, the O–Ti3C2Tx/SnO2 heterojunction offered better electron extraction and reduced recombination between the ETL and the perovskite, thus rendering an increase of the power conversion efficiency (PCE) from 17.68% to 20.09% and enhancement of stability in air.
研究领域:
材料科学
·
光伏技术
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Energy & Environmental Materials
·
2021
·Vol. 6
·期 1
·e12298
·
IF 15.122
Fanbo Meng,Jiayao Qin,Xingyu Xiong,Xiangjie Li,Renzong Hu
Metal–N 2 battery can be applied in both energy storage and electrochemical nitrogen reduction reaction (NRR); however, there has been only extraordinarily little study on metal–N 2 battery since its electrochemical reversibility still needs further proofs. And its electrochemical performances also need to be enhanced. Herein, we investigated the discharge–charge reactions between Li anode and N 2 cathode via designing an efficient catalyst of nanosized SnO 2 particles dispersed on N-doped carbon nanosheets (SnO 2 @NC) for the Li-N 2 battery, with good cyclic stability and a high specific capacity of 0.25 mA h (~500 mA h g −1 ) at a large current density of 1000 mA g −1 . The electrochemical reversibility of both NRR in the discharge process and nitrogen extraction reaction in the charge process for Li-N 2 battery is discussed. Time-of-flight secondary ion mass spectrometry results imply that the SnO 2 @NC can effectively promote the adsorption of N 2 and the activation of NRR in the discharge process. Furthermore, ex situ X-ray photoelectron spectroscopy and Fourier transform infrared tests are performed to study the electrochemical reversibility of Li-N 2 battery. It can be proved that the formation and decomposition of discharging product Li 3 N are electrochemical reversible during cycling in our deigned Li-N 2 battery system with SnO 2 @NC catalyst.
研究领域:
能量存储
·
电化学
·
材料科学
·
催化
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Xi-Qian Sun,Yun-Feng Li,Li Chen,Hong-Bao Li,Ren-Hui Gao,Jie Liu,Tian-Yu Yang,Zheng Guo
Lithium-ion batteries (LIBs) provide many benefits, but trace electrolyte leakage can cause serious safety risks such as thermal runaway. Although gas sensors offer a potential solution, the complexity of electrolyte solvents in LIBs makes it challenging to develop sensing materials capable of universally detecting multiple solvent molecules. Here, Ag@Ag2O-functionalized SnO2 nanoflowers were synthesized using a self-template pyrolysis strategy for the sensitive detection of both common solvent molecules and widely used electrolytes. These sensors, enhanced by abundant oxygen vacancies introduced by Ag@Ag2O functionalization, exhibit excellent sensitivity, particularly to dimethyl carbonate, with a response of 106–100 ppm, a low detection limit of 11.76 ppb, and rapid response/recovery times (28/55 s) at an operating temperature of 200 °C. The sensor performance was validated by density functional theory calculations, which corroborated the effectiveness of the sensing material. In simulated LIB leakage scenarios, such as puncture and electrolyte injection, the sensors demonstrated quick responses to various common electrolyte compositions, indicating their potential for practical applications. This study highlights an effective method for fabricating composite sensing materials and emphasizes the practical significance of our universal detection approach for practical monitoring of electrolyte leakage in energy storage devices.
研究领域:
材料科学
·
能源技术
·
化学传感
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2024
·
IF 4.2
Fanhua Yu,Shaojie Hong,Bin Guo,Xiangqian Ren,Xingfu Zhou
Ozone water is widely used in disinfection area and wastewater treatment due to its strong oxidation. Recent studies have found that Ti/SnO 2 -Sb-Ni (NATO) anode has higher O 3 generation efficiency due to its higher oxygen evolution potential. In this paper, TiO 2 nanotubes (TiO 2 -NTs) were prepared by anodic oxidation method as the basic substrate material for the Ti/SnO 2 -Sb-Ni electrode, and SnO 2 -Sb-Bi was introduced as the intermediate layer to investigate the electro-synthesis of ozonated water. Studies show that the modification of the TiO 2 -NTs substrate provides a larger specific surface area for the reaction and accelerates the transfer of electrons from the oxide layer to the substrate. The introduction of the SnO 2 -Sb-Bi intermediate layer effectively delays the electrode deactivation and also enhances the electron transport. When the Ti/TiO 2 NTs/SnO 2 -Sb-Bi/NATO electrode was used and electrolyzed for 15 min, the ozone water concentration reached 13.15 mg L −1 , about twice as much as the unmodified electrode. The effects of current density and the coating numbers of active layers on the electrosynthesis of the ozonated water were also investigated. Finally, the application of ozonated water in the decolorization of organic dye wastewater was investigated based on its strong oxidation property, the degradation rate of 40 ppm methylene blue reached 94.5 % and the COD removal rate reached 72.9 % in 30 min. In addition, the cell voltage remained constant during decoloration, indicating the good stability of the electrode. This study also opens a door to the rapid electrochemically decoloration of wastewater and sterilization area by using electrochemically obtainable ozone water.
研究领域:
环境科学
·
电化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Hongtao Cui,Junying Xue,Wanzhong Ren,Minmin Wang
SnO 2 quantum dots are prepared at an ultra-large scale by a productive synthetic procedure without using any organic ligand. The grinding of solid mixture of SnCl 2 ⋅2H 2 O and ammonium persulphate with morpholine in a mortar at room temperature produces 1.2 nm SnO 2 quantum dots within 5 min. The formation of SnO 2 is initiated by the reaction between tin ions and hydroxyl groups generated from hydrolysis of morpholine in the released hydrate water from SnCl 2 ⋅2H 2 O. It is considered that as water is rapidly consumed by the hydrolysis reaction of morpholine, the growth process of particles is self-terminated immediately after their transitory period of nucleation and growth. As a result of simple procedure and high toleration to scaling up of preparation, at least 50 g of SnO 2 quantum dots can be produced in one batch in our laboratory. The as prepared quantum dots present high electrochemical performance due to the effective faradaic reaction and the alternative trapping of electrons and holes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 35
·15901-15911
·
IF 3.591
Xiao-yi Liu,Xiu-ping Li,Rong-xiang Zhao,Hao Zhang
Silica gel containing SnCl2-based deep eutectic solvents (DESs) were synthesized by a sol–gel method using SnCl2-based DESs as the loading component. The n%-SnO2/SiO2 (n = 2, 4, 6) supported catalyst was obtained by calcination of silica gel containing SnCl2-based DESs at high temperature. n%-SnO2/SiO2 was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), N2 adsorption–desorption and X-ray photoelectron spectroscopy (XPS). A catalytic oxidation desulfurization system with 4%-SnO2/SiO2 as the catalyst and H2O2 as the oxidant was applied to remove organic sulfide in model oil. Compared with the traditional impregnation method, the catalyst synthesized using the sol–gel method showed higher oxidative desulfurization activity. The effects of various factors including loading dose of SnO2, temperature, O/S molar ratio, catalyst dosage, and different sulfides on the desulfurization rate were investigated. The experimental results indicate that the desulfurization rate of dibenzothiophene (DBT), 4,6-dimethyldibenzothiophene (4,6-DMDBT) and benzothiophene (BT) can reach 99.5%, 81.6% and 22.4%, respectively, under the optimal reaction conditions. The desulfurization activity of 4%-SnO2/SiO2 is above 90% after recycling 5 times.
研究领域:
化学工程
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 35
·19681-19686
·
IF 12.732
Zhongjie Yang,Caoyu Yang,Jianyu Han,Wenshi Zhao,Shengxian Shao,Siyu Li,Huiwen Gao,Haijiao Xie,Xiaofei Zhang
Selective electrochemical CO2 reduction to formic acid is an appealing strategy to achieve efficient utilization of CO2. Modification of the catalytic interface with organic linkers has been proven to promote the conversion of CO2 to CO, but the highly selective generation of formic acid is still a challenge. Herein, modification of the interface of graphene oxide (GO) with amide linkages to anchor SnO2 nanoparticles is presented to catalyze the CO2 reduction reaction (CO2RR). As expected, the as-synthesized SnO2/tert-GO shows a competitive high cathodic faradaic efficiency (FE) of 84.4% for formate at −0.96 V and shows long-term stability for the CO2RR. Further, density functional theory (DFT) calculations indicated that amide linkages facilitate the conversion of CO2 to formate.
研究领域:
电化学
·
材料科学
·
催化
·
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）