ACS Sensors
·
2023
·
IF 8.9
Huajing Wang,Rui Xiong,Zhou Cui,Jie Wan,Baisheng Sa,Xiao Wu,Wulin Song,Xiaoxia Wang,Dawen Zeng
The problems of lithium-ion battery (LIB) failure have attracted growing attention since flammable and explosive electrolyte leakage might lead to serious consequences. However, due to the redox-neutral and volatile nature of main electrolyte components, such as dimethyl carbonate (DMC), trace leakages are difficult to detect. Therefore, research on LIB electrolyte sensors is urgent and lacking. Herein, sensors based on rare-earth Nd-doped SnO2 nanofibers are reported for detecting DMC vapor in LIB. The excellent sensitivity (distinct response to 20 ppb DMC), high response (∼38.13–50 ppm DMC), and superior selectivity and stability of 3%Nd-SnO2 suggest that it should be a promising candidate for LIB safety monitors. Meanwhile, it also shows clear and rapid response during the LIB-leakage real-time detection experiment. The doping of Nd endows SnO2 with more oxygen vacancy defects. In addition, the highly active Nd sites greatly enhanced the adsorption energy of DMC on SnO2. All of these features contribute to the improvement of DMC-sensing performances.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Wenbo Lu,Degong Ding,Qingzhong Xue,Yonggang Du,Ya Xiong,Jianqiang Zhang,Xinglong Pan,Wei Xing
In this study, unloaded and Pt-loaded SnO 2 nanofibers (NFs) with 100–150 nm diameters were synthesized by a simple electrospinning technology and then calcined at 600 °C in air. It was observed that the Pt-SnO 2 NFs were comprised of strings of tiny SnO 2 nanoparticles decorated with Pt and PtO nanoparticles, resulting in the formation of PtO/SnO 2 heterojunction and high porosity. And then, we studied the methane (CH 4 ) sensing performance of the sensors fabricated from these NFs and found that 20 mol% Pt-SnO 2 NFs exhibited excellent CH 4 sensing properties over a temperature range of 100–350 °C, for example, the 20 mol% Pt-SnO 2 NFs showed an obvious response of 1.11–1 ppm CH 4 at 350 °C, which was 2 orders of magnitude lower than the minimum detection limit of the current SnO 2 based CH 4 sensors. The great enhancement of the CH 4 sensing properties of Pt-SnO 2 NFs can be understood by the PtO/SnO 2 heterogeneous sensitization and Pt catalytic effect. Our findings present a novel strategy for the application of SnO 2 based NFs in highly effective CH 4 detection.
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
Nanomaterials
·
2019
·Vol. 9
·期 9
·1250
·
IF 4.034
Hongcheng Liu,Feipeng Wang,Kelin Hu,Bin Zhang,Li He,Qu Zhou
In this paper, the porous NiO/SnO2nanofibers were synthesized via the electrospinning method along with the carbonization process. The characterization results show that the pristine SnO2-based nanofibers can form porous structure with different grain size by carbonization. The hydrogen gas-sensing investigations indicate that the NiO/SnO2sensor exhibits more prominent sensing properties than those of pure SnO2sensor devices. Such enhanced performance is mainly attributed to the porous nanostructure, which can provide large active adsorption sites for surface reaction. Moreover, the existence of p-n heterojunctions between NiO and SnO2also plays a key role in enhancing gas-sensing performances. Finally, the H2sensing mechanism based on the NiO/SnO2nanocomposite was proposed for developing high-performance gas sensor devices.Keywords:NiO/SnO2nanofibers;p-n heterojunctions;porous nanostructure;H2sensor
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 ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Huimin Zhou,Muhammad Awais Naeem,Pengfei Lv,Jin Zhang,Zengyuan Pang,Lei Luo,Yibing Cai,Xin Xia,Qufu Wei
Carbon-coated SnO 2 composite nanofibers has been considered as an efficient way to alleviate the enormous volume change problem of tin-based anodes for lithium ion batteries (LIBs). Herein, porous carbon/SnO 2 nanofibers were prepared via single-needle electrospinning which was followed by carbonization treatment. The procedure involved two categories of precursors of SnO 2, stannic chloride pentahydrate and stannic acetate, whereas former was fully dissolved while later was partially dissolved in solvent, leading to different pore distribution in cooperating with thermal decomposition of polymethyl methacrylate. The pores generated from stannic chloride pentahydrate/polymethyl methacrylate system were randomly distributed on the surface of nanofibers. In the case of stannic acetate/polymethyl methacrylate derived composites, the thermolysis of polymer left multichannels within the nanofibers coupled with SnO 2 nanoparticles . Galvanostatic charge/discharge was carried out to evaluate them as anode materials for LIBs. It was found that multichannel carbon/SnO 2 nanofibers with large specific surface area (34.97 m 2 /g) achieved better rate capability and stable capacity retention of 89.9% after 50 cycles. The longitudinally aligned pores facilitated lithium diffusion and transference, which avoided nonuniform deposition and separation of lithium ions , thereby further enhancing the stability during the discharge/charge process.
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
MOLECULES
·
2019
·Vol. 25
·期 1
·35
·
IF 3.06
Kechuang Wan,Jialin Yang,Ding Wang,Xianying Wang
In this work, we reported a formaldehyde (HCHO) gas sensor with highly sensitive and selective gas-sensing performance at low operating temperature based on graphene oxide (GO)@SnO2nanofiber/nanosheets (NF/NSs) nanocomposites. Hierarchical SnO2NF/NSs coated with GO nanosheets showed enhanced sensing performance for HCHO gas, especially at low operating temperature. A series of characterization methods, including X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), Transmission electron microscope (TEM), X-ray photoelectron spectroscopy (XPS) and Brunauer–Emmett–Teller (BET) were used to characterize their microstructures, morphologies, compositions, surface areas and so on. The sensing performance of GO@SnO2NF/NSs nanocomposites was optimized by adjusting the loading amount of GO ranging from 0.25% to 1.25%. The results showed the optimum loading amount of 1% GO in GO@SnO2NF/NSs nanocomposites not only exhibited the highest sensitivity value (Ra/Rg= 280 to 100 ppm HCHO gas) but also lowered the optimum operation temperature from 120 °C to 60 °C. The response value was about 4.5 times higher than that of pure hierarchical SnO2NF/NSs (Ra/Rg= 64 to 100 ppm). GO@SnO2NF/NSs nanocomposites showed lower detection limit down to 0.25 ppm HCHO and excellent selectivity against interfering gases (ethanol (C2H5OH), acetone (CH3COCH3), methanol (CH3OH), ammonia (NH3), methylbenzene (C7H8), benzene (C6H6) and water (H2O)). The enhanced sensing performance for HCHO was mainly ascribed to the high specific surface area, suitable electron transfer channels and the synergistic effect of the SnO2NF/NSs and GO nanosheets network.Keywords:GO@SnO2NF/NSs;nanocomposites;formaldehyde gas sensors;three-dimensional nanostructure
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biomed Research International
·
2018
·
IF 2.583
Huiling Lv,Chao Wu,Xuan Liu,Andi Bai,Yue Cao,Wenjing Shang,Lili Hu,Ying Liu
In this study, we prepared PTX-loaded mesoporous hollow SnO2 nanofibers conjugated with folic acid (SFNFP) for liver cancer therapy. According to SEM and TEM characterization, SFNF showed a mesoporous hollow structure. The average outer diameter was 200 nm, and the wall thickness was 50 nm. The DSC and XRD study showed that PTX in the channels of nanofibers was present in an amorphous state. The in vitro release experiments demonstrated that SFNF could efficiently improve the dissolution rate of PTX. Both in vitro cell experiments and in vivo antitumor experiments showed that SFNFP could efficiently inhibit the growth of liver cancer cells. Therefore, SFNF is a promising targeting antitumor drug delivery carrier.
研究领域:
纳米技术
·
药学
·
癌症研究
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2017
·
IF 5.401
Wen-Tao Li,Xiao-Dong Zhang,Xin Guo
Ni-doped SnO 2 nanofiber array was prepared from a modified electrospinning technique followed with hot-press and calcination, which impart the nanofiber with high crystallinity as well as good adhesion to the substrate. The nanofiber array consists of well-aligned straight fibers with an average diameter of ∼200 nm and length of several millimeters. Each fiber consists of rutile-structured polycrystals with an average grain size of ∼5 nm. Conductometric gas sensors were developed from the nanofiber array using magnetron sputtering. These sensors show excellent performance for NO 2 detection at 250 °C, including high response (90.3 under 20 ppm), fast response and recovery (40 s/18 s), and above all, excellent selectivity. Beneficial for electron transport, the nanofiber array offers better device performance over random nanofibers on sensing response and time for recovery. In addition, the NO 2 sensing mechanism was probed with detailed DRIFT and XPS analysis.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Long Chen,Yanhua Song,Wenxin Liu,Hao Dong,Di Wang,Jun Liu,Qingjun Liu,Xing Chen
Gas sensors fabricated by metal oxide semiconductors (SMOs) exhibited promising prospect for acetone detection due to their high sensitivity, small sizes, simple operation, facile fabrication and low cost. However, the current SMOs still face diverse challenges involving high power consumption, low response, poor anti-interfering ability and weak repeatability. In this work, in order to meet the ever-increasing requirements for acetone detection, Pt nanoparticles (NPs) were embedded into ZIF-8 templates then loaded on porous SnO 2 nanofibers (NFs) via electrospinning and subsequent annealing process with a control of heating rate. The gas sensing characteristics of pristine SnO 2 , SnO 2 -ZnO, and Pt-ZnO-SnO 2 porous NFs were investigated. The Pt-ZnO-SnO 2 porous NFs displayed an ultrahigh response (R a /R g = 104.26–100 ppm at 170 °C), high selectivity and low detection limit (200 ppb) to acetone during dynamic measurements. In this study, the advanced sensing behavior can be ascribed to the multi-heterojunctions construction at the interface of SnO 2 -ZnO, ZnO/PtO 2 and SnO 2 /PtO 2 , the increasement of oxygen vacancies , as well as the electronic and chemical sensitization of Pt NPs. The well-dispersed and ultrasmall-sized Pt NPs (~3 nm) functionalized on porous SnO 2 NFs also play an essential role in fabricating high-performance acetone sensors.
研究领域:
材料科学
·
纳米技术
·
化学传感器
·
气体传感
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yutang Kang,Jiahao Chen,Shasha Feng,Huixian Zhou,Fangqi Zhou,Ze-Xian Low,Zhaoxiang Zhong,Weihong Xing
Particulate matters (PMs) emissions from energy consumption contribute the vast majority of PM pollution, which are typically associated with high temperatures (>300 °C) and are difficult to remove directly at high temperatures. Electrospinning nanofiber membranes have irreplaceable advantages of high removal efficiency and low pressure drop for PMs filtration, however, the efficient filtration of PMs at high temperature is challenging for polymer-based nanofiber membranes because of the poor heat resistance and inflammability. Herein, we design a thermally-oxidized polyacrylonitrile/polyvinylpyrrolidone/SnO 2 (OPAN/PVP/SnO 2 ) nanofiber membrane by performing the thermally induced cyclization and oxidation reaction of PAN/PVP/SnCl 2 nanofiber membrane at 350 °C in air. During the thermal oxidization process, Sn 2+ acted as a catalyst and activation, preventing the melting and fusion of PAN nanofibers. The addition of PVP greatly increased the mechanical properties of OPAN/SnO 2 nanofiber membrane. The prepared OPAN/PVP/SnO 2 nanofiber membrane possesses superior PMs filtration performance at room temperature, with the PM 0.3 and PM 2.5 filtration efficiency of 99.53% and 99.98%, respectively. The OPAN/PVP/SnO 2 nanofiber membrane exhibits high temperature tolerance up to 350 °C and wide pH tolerance of 1–14, it remains a high PMs removal efficiency of 98.51% at 350 °C and 98.67% at 300 °C. Moreover, the OPAN/PVP/SnO 2 nanofiber membrane shows excellent fire retarding and self-extinguishing property not shown in pristine PAN nanofiber membrane. This work provides a novel approach for clean use of energy via a cost-effective, heat-resistant, and flame-retardant nanofiber membrane.
研究领域:
环境科学
·
材料科学
·
纳米技术
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Guangzhi Yang,Chenkai Cao,Haoran Zhong,Yu Cheng,Wenhui Zhang,Ding Wang
As a typical pollution gas , xylene poses a particularly serious threat to human health. The xylene sensors with low operating temperature, fast response speed, sufficient detection limit and satisfactory selectivity are required for safety protection. Herein, a novel xylene sensitive material (SnO 2 @MoS 2 ) was constructed by self-assembling MoS 2 nanosheets array on SnO 2 nanofibers . The response of SnO 2 @MoS 2 sensor was 23.5–100 ppm xylene vapor, which was much higher than that of single-component sensors. Additionally, the response/recovery times were 21.5/60.4 s with a limit of detection (LOD) as low as 0.5 ppm. The good sensitive was ascribed to the unique resistance characteristics of the hierarchical structure, the regulation of electronic property by heterojunctions , and the increase of adsorption sites caused by large specific surface areas and surface defects . This work enlightens a novel strategy on the construction of MoS 2 based core-shell hierarchical nanomaterials and future development of high efficiency xylene sensor.
研究领域:
材料科学
·
纳米技术
·
环境科学
·
传感器技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shun-Shun Chen,Zi-Yi Shen,Jin-Xuan Song,Ming Tang,Guo-Hui Jiang
The cross-interference of multiple gases and their unknown concentrations in mixed environments renders identifying and determining single-phase gas concentrations in mixed environments a challenge for chemical-resistant metal oxide gas sensors. In this study, a dynamic temperature modulation strategy is proposed, and the temperature-controlled sensitivity behavior of porous SnO 2 nanofibers embedded with Fe 2 O 3 hollow spheres (Fe 2 O 3 @SnO 2 ) as a gas sensor under different frequency modulations is explored. Based on differences in their characteristic curves, linear discriminant analysis was employed to extract features and reduce dimensions. Seven different volatile organic compounds were successfully identified and analyzed. Convolutional neural networks were used to identify certain characteristics and predict the concentrations of single-phase gases in mixed-gas environments. Using training and data validation, seven single-phase gases were successfully separated and identified, with an accuracy of 99.8% for n-butanol. Linear regression analysis was also performed on different gas targets, and the actual concentration was highly consistent with the predicted concentration, rendering the Fe 2 O 3 @SnO 2 gas sensors useful for quantitative analysis.
研究领域:
化学传感
·
纳米材料
·
气体检测
·
机器学习应用
·
环境监测
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Haoru Shan,Xueqin Wang,Feihao Shi,Jianhua Yan,Jianyong Yu,Bin Ding
The separation and purification of chemical molecules from organic media under harsh chemical environments are of vital importance in the fields of water treatment, biomedical engineering, and organic recycling. Herein, we report the preparation of a flexible SiO2/SnO2 nanofibrous membrane (SiO2/SnO2 NFM) with high surface area and hierarchical porous structure by selecting poly(vinyl butyral) as pore-forming agent and embedding crystalline phase into amorphous matrix without using surfactant as sacrificial template. Benefiting from the uniform micropore size on the fibers and negatively charged properties, the membranes exhibit a precise selectivity toward molecules based on electrostatic interaction and size exclusion, which could separate organic molecule mixtures with the same electrostatic charges and different molecular sizes with a high efficiency of more than 97%. Furthermore, the highly tortuous open-porous structures and high porosity give rise to a high permeate flux of 288 000 L m–2 h–1. In addition, the membrane also displays excellent stability and can be reused for ten consecutive filtration–regeneration cycles. The integration of high filtration efficiency, large permeate flux, good reutilization, and easy to industrialization provides the SiO2/SnO2 NFM for potential applications in practical molecular purification and separation science.
研究领域:
水处理
·
生物医学工程
·
有机回收
·
材料科学
·
环境科学
·
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）