ACS Applied Nano Materials
·
2025
·
IF 5.5
Yanqiao Ding,Yinpei Luo,Chun Huang,Shifu Gu,Bingsheng Du,Yingchun Dong,Yijie Shi,Hangyu Liu,Mati Horprathum,Wei Hu,Yong He
Achieving highly sensitive detection of ppb-level NO2 at room temperature remains a significant challenge for metal oxide semiconductors (MOS) due to their low chemical activity. Herein, a synergistic sensitization strategy is proposed, combining highly conductive MXene with high specific surface area mixed MOS. In this work, NiO–SnO2 is synthesized by thermal annealing using Ni–Sn–BTC (BTC: benzene-1,3,5-tricarboxylic) as a template. The mesoporous structure and high conductivity of NiO–SnO2/Ti3C2Tx provide a variety of channels for gas diffusion and carrier transfer. Gas sensor tests reveal that the fabricated NiO–SnO2/Ti3C2Tx sensor exhibits a 4.33-fold improvement in response (Rg/Ra = 70.86 to 200 ppb) to 200 ppb of NO2 at room temperature (RT, 25 °C) compared to NiO–SnO2. In addition, the sensor also maintains a low detection limit (50 ppb), superior selectivity (response ratio >30), good repeatability (RSD: 2.3%), and long-term stability at RT and 60% RH (RH: relative humidity). The outstanding sensing properties are mainly attributed to the functionalized surfaces and multiple-type heterojunctions formed by NiO, SnO2, and Ti3C2Tx phases, which significantly improve gas adsorption and electrical transduction function of the sensor.
研究领域:
材料科学
·
传感器技术
·
化学检测
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 16
·13384-13391
·
IF 3.289
Bin Lu,Renzong Hu,Jiangwen Liu,Jun Liu,Hui Wang,Min Zhu
To improve the coulombic efficiency (CE) and cycle life of SnO2 anode in lithium ion batteries, SnO2–Cu–graphite composites with dual scale embedding structure are synthesized by ball milling. The SnO2–Cu composite, in which SnO2 nanoparticles with grain size less than 10 nm are uniformly dispersed in inactive nanocrystalline Cu matrix, is firstly obtained by milling the mixture of SnO2 and Cu nanopowders (molar ratio 1 : 2), and then further milling with graphite (C) to obtain SnO2–Cu–C composite with microsized graphite sheets as matrix of SnO2–Cu composite. The 50 h-milled SnO2–Cu composite exhibits higher initial CE (76.0 ± 1.5%) and subsequent CE than 50 h-milled SnO2. Furthermore, the SnO2–Cu–C composite anode is capable of retaining a maximum charge capacity of 450.8 mA h g−1 at 100 mA g−1 after 80 cycles with a capacity retention ratio of 74.4%, displaying superior cyclic stability to as-milled SnO2, SnO2–Cu and SnO2–C composites. The improved CE and cycleability are attributed to the unique dual scale embedding structure that offers good conductivity of electron and lithium ion as well as the nanostructure stability of active materials. This unique composite structure might be extended to other high-capacity anode materials, to achieve high performance lithium ion batteries.
研究领域:
材料科学
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电化学
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纳米材料
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能源存储
·
锂离子电池
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2020
·
IF 5.715
Li Liu,Yunong Li,Wei Li,Ruixue Zhong,Yeqing Lan,Jing Guo
Co 3 O 4 –SnO 2 /rice straw biochar (RSBC) was prepared for the first time via calcining oxalate precipitation precursor dispersed on the surface of RSBC and used as a catalyst for activating PMS to degrade sulfisoxazole (SIZ). The results demonstrated that Co 3 O 4 –SnO 2 /RSBC possessed much better catalytic performance than Co 3 O 4 , Co 3 O 4 –SnO 2 , Co 3 O 4 /RSBC, and SnO 2 /RSBC, which is ascribed to the synergy of Co 3 O 4 , SnO 2 and RSBC. Approximately 98% of SIZ (50 mg/L) was decomposed by PMS (1 mmol/L) activated with Co 3 O 4 –SnO 2 /RSBC (0.1 g/L) within 5 min. The optimal degradation efficiency of SIZ was realized at the initial pH 9. Co 3 O 4 –SnO 2 /RSBC also displayed remarkable stability and reusability, and the degradation rate of SIZ maintained over 90% even after the fifth recycle run. The electron paramagnetic resonance (EPR) technique and quenching experiments proved singlet oxygen ( 1 O 2 ) to be the main reactive oxygen species (ROS) responsible for the SIZ decomposition in the Co 3 O 4 –SnO 2 /RSBC/PMS system. On the basis of the characterization analysis, the identification of the ROS and the SIZ degradation products , the possible mechanism and pathways of the SIZ degradation by a combination of PMS and Co 3 O 4 –SnO 2 /RSBC were further proposed. This study provides not only a new insight into non-radical mechanism for the heterogeneous activating PMS over Co 3 O 4 –SnO 2 /RSBC to degrade organic pollutants but also an eco-friendly synthetic route for exploring novel and efficient catalysts.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Kelin Hu,Feipeng Wang,Zijia Shen,Hongcheng Liu,Jianglin Xiong
In this paper, Pd/ZnO–SnO 2 hollow nanofibers prepared by electrospinning and magnetron sputtering . The sensing materials exhibited extraordinary hydrogen (H 2 ) sensing behavior – the response reached 171 at 270 °C, and besides, the response time and recovery time were as low as 19 s and less than 1 s at 240 °C, with steady high selectivity and good repeatability. Such an enhanced sensing performance could be attributed to the Pd/ZnO/SnO 2 ternary heterojunctions formed in the hollow nanofibers. Moreover, the materials were studied by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and especially the morphology formation process was further explained. The existence of Pd was confirmed to increase the resistance modulation range of heterojunction. In addition, the gas sensing mechanism based on the structure was proposed.
研究领域:
材料科学
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传感器技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 9
·1-12
·
IF 5.3
Han Yiming,Hao Shuai,Liu Lihong,Li Bo,Mu Yannan,Yang Ming,Zhang Jie
The development of NH 3 sensors with efficient room temperature detection is crucial for Internet of Things-driven smart agriculture. Herein, PANI/SnO 2 hollow nanospheres composites were in situ synthesized on flexible interdigital electrodes (PET-IDE). Within the PANI/SnO 2 composites microstructure, the SnO 2 hollow spheres can provide effective support to the PANI film, minimize agglomeration, and enhance the functional performance of PANI. Furthermore, the extensive interface between the SnO 2 hollow spheres and the PANI film promotes the creation of p-n heterojunction, thereby significantly improving the NH 3 gas-sensing performance. The 4PS-based sensor (the PANI/SnO 2 composite obtained at 0.04 mol·L −1 APS/HCl solutions) exhibited a high response (9.63) toward 100 ppm NH 3 , along with excellent selectivity and stability. Correlations between microstructure and NH 3 gas-sensing behavior were systematically investigated, offering theoretical insights for sensor optimization. Graphical
研究领域:
材料科学
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化学传感器
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纳米技术
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柔性电子学
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环境监测
✓ 已验证
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2021
·
IF 9.676
Qian Chen,Changtao Peng,Lin Du,Tian Hou,Wenjing Yu,Dong Chen,Hui Shu,Dejun Huang,Xiangqing Zhou,Jinyang Zhang,Wenfeng Zhang,Haijin Li,Jiale Xie,Yuelong Huang
Electron transport layer (ETL) is very critical to the performance of perovskite solar cells (PSCs), and optimization work on ETL has received extensive attentions especially on tin oxide (SnO 2 ) since it is an excellent ETL material widely applied in high-efficiency PSCs. Thereinto, introducing mesoporous structure and surface modification are two important approaches which are commonly applied. Herein, based on the previous work in low-temperature fabrication process of mesoporous SnO 2 (m-SnO 2 ), we introduced a modification process with rubidium fluoride (RbF) to the m-SnO 2 ETL, and successfully achieved a synergy of the m-SnO 2 and RbF modification: not only the shortcoming of the m-SnO 2 in interfacial traps was overcome, but also the carrier collection efficiency was further improved. The PSCs based on the m-SnO 2 ETL with RbF modification demonstrated outstanding performances: a champion power conversion efficiency (PCE) of 22.72% and a stability performance of maintaining 90% of the initial PCE after 300 h of MPP tracking were obtained without surface passivation of perovskite film. Hence, utilizing the abovementioned synergy is a cost-effective and feasible strategy for fabricating high-efficiency and stable PSCs since the fabrication process of the m-SnO 2 ETL is a kind of low temperature process and RbF is cheap.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Guang-Ya Miao,Shun-Shun Chen,Ya-Jie Wang,Zheng Guo,Xing-Jiu Huang
Dynamic working temperature modulation has received considerable attention as a way to enable metal oxide-based gas sensors to recognize the detected gases. Previous reports mainly focused on heating-voltage waveform manipulation and algorithm improvement, not involving the insight of the temperature modulation sensing behavior correlated with fine nanostructures of metal oxide. Here, three types of SnO2 nanoparticles with different percentages of high-energy {221} and low-energy {110} crystal facets were synthesized and assembled as gas sensors. Under a working temperature modulation by applying a square wave pulse heating voltage, their dynamic response behaviors toward volatile organic compounds (VOCs) including alcohols, aldehydes, ketones, amines, and aromatic compounds were systematically explored. The results indicated that they exhibited different characteristic response curves toward different VOCs, presenting the crystal facet-dependent temperature modulation sensing behaviors. This effect was analyzed further and explored in conjunction with the characteristic response curves. Based on their different characteristic response curves that occurred on the three types of SnO2 nanoparticles, the detected gases, and even some congeners, were well discriminated along with a simple PCA recognition algorithm. Additionally, their quantitative analysis was also achieved.
研究领域:
材料科学
·
传感器技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 13
·2102464
·
IF 6.389
Weihuang Wang,Liquan Yao,Jiabin Dong,Li Wu,Zixiu Cao,Li Hui,Guilin Chen,Jingshan Luo,Yi Zhang
An undesirable p–n heterojunction interface of Sb 2 Se 3 absorber with Cd-free electron transport layer (ETL) is one of the key problems hindering the efficiency improvement of Sb 2 Se 3 solar cell. Herein, a promising SnO 2 /TiO 2 ETL coupled with SbCl 3 treatment is introduced to improve the performance of Sb 2 Se 3 solar cell. The mechanism of SbCl 3 treatment on the crystal orientation of Sb 2 Se 3 thin film and the p–n heterojunction interface of Sb 2 Se 3 solar cell is disclosed combined with different characterization methods. The carrier transport property for Sb 2 Se 3 thin film is enhanced, and the conduction band offset (CBO) of TiO 2 /Sb 2 Se 3 interface is reduced from 0.57 to 0.20 eV by forming Sb 2 O 3 interlayer at TiO 2 /Sb 2 Se 3 interface after SbCl 3 treatment, by which the interface recombination and the open circuit voltage deficit of the device can be effectively decreased, and the interface bonding at TiO 2 /Sb 2 Se 3 interface can be effectively improved. Ultimately, the Cd-free Sb 2 Se 3 solar cell with configuration of ITO/SnO 2 /TiO 2 /Sb 2 Se 3 /Au achieves an efficiency of 5.82%, which is the highest efficiency in vapor transport deposition (VTD)-processed Cd-free Sb 2 Se 3 solar cell at present. This work is expected to fill in the blank of VTD-processed Cd-free Sb 2 Se 3 solar cell and offers a valuable reference for future band alignment of Sb 2 Se 3 solar cell.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2020
·
IF 3.085
Tianxu Zhang,Fei Chang,Yingfei Qi,Xinyi Zhang,Jieya Yang,Xiaoqi Liu,Shijie Li
In this investigation, a facile alkali-free one-pot synthetic protocol was developed to construct binary SnO 2 / g -C 3 N 4 composites for sake of environment friendliness. These composites were systematically characterized by various analytical techniques. X-ray powder diffraction (XRD) patterns, Fourier-transform infrared spectra (FT-IR), and X-ray photoelectron spectra (XPS) identified the coexistence of both components that were closely combined to generate heterojunction structures proven by high resolution transmission electron microscope (HRTEM) observations. These binary composites showed enhanced photocatalytic performance over methyl orange decolorization under visible light irradiation in comparison to bare g -C 3 N 4 , mostly attributing to morphological harmony of both ingredients, formation of heterojunction domains, and well-aligned band structures. Besides, the satisfactory reusability and structural stability of composites were identified. Basing on entrapping experiments and electron spin resonance (ESR) analyses, a possible photocatalysis mechanism was preliminarily inspected. It was noted that the variation of real weight percent of SnO 2 in composites was constrained to some degree, which should be settled in future work by appropriate modifications of such synthetic protocol.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Zhiqiang Li,Mingyue Sun,Beiping Dong,Juncheng Liu
Sb/Yb co-doped SnO 2 film was deposited on the glass with sol–gel to prepare high thermal insulation film with high visible transmittance. Its crystal structure is consistent with that of SnO 2 . Its sheet resistance first decreases then increases with Yb doping content, gets the minimum at 9.0 mol%, reduced about an order of magnitude compared with Sb doped film. Its visible average transmittance (380–780 nm) fluctuates a bit, gets the minimum 79.0% at 9.0 mol%, the maximum 84.1% at 6.0 mol%. Its average near-infrared transmittance (780–2500 nm) gets the minimum 27.9% at 9.0 mol%, decreases 70.2% compared with the glass.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENT INTERNATIONAL
·
2019
·
IF 7.943
Chengzhi Zhou,Yanping Wang,Jie Chen,Junfeng Niu
Electrochemical degradation of trace antiretroviral drug stavudine was investigated by using a reactive electrochemical membrane (REM) with Ti/SnO 2 -Sb anode. From the results it was evident that the stavudine degradation followed pseudo-first-order kinetics, with the values of the degradation rate constant and half-life being 0.24 min −1 and 2.9 min, respectively, at a current density of 8 mA cm −2 . The degradation rate was obviously decreased under alkaline condition (pH = 11.0) and the degradation was also inhibited in the presence of NO 3 − and Cl − . Five intermediates were identified in the electrochemical degradation of stavudine, and the degradation pathways were proposed. Density functional theory calculation revealed that the double bond carbon atom nearby hydroxymethyl group was the site attacked by OH and the cleavage of C N bond was the rate-determining step in the electrochemical degradation of stavudine. The nitrogen in stavudine was mainly converted to nitrate and ammonium. Quantitative structure-activity relationship model indicated that the toxicity of some intermediates was higher than the parent compound stavudine. The electric energy consumption for 90% stavudine degradation ranged from 0.87 to 2.29 Wh L −1 at the experimental conditions, indicating that stavudine can be degraded efficiently by the REM with Ti/SnO 2 -Sb anode.
研究领域:
环境科学
·
电化学工程
·
药物化学
✓ 已验证
DOI
PubMed
高影响因子
Scientific Reports
·
2016
·Vol. 6
·期 1
·1-11
·
IF 5.228
Liu Lingmei,Sun Wuzhu,Yang Weiyi,Li Qi,Shang Jian Ku
Most photocatalysts only function under illumination, while many potential applications require continuous activities in dark. Thus, novel photocatalysts should be developed, which could store part of their photoactivity in “memory” under illumination and then be active from this “memory” after the illumination is turned off for an extended period of time. Here a novel composite photocatalyst of SnO 2 nanoparticle-decorated Cu 2 O nanocubes is developed. Their large conduction band potential difference and the inner electrostatic field formed in the p - n heterojunction provide a strong driving force for photogenerated electrons to move from Cu 2 O to SnO 2 under visible light illumination, which could then be released to react with O 2 in dark to produce H 2 O 2 for its post-illumination activity. This work demonstrates that the selection of decoration components for photocatalysts with the post-illumination photocatalytic “memory” could be largely expanded to semiconductors with conduction band potentials less positive than the two-electron reduction potential of O 2 .
研究领域:
材料科学
·
纳米技术
·
光催化
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）