APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 10
·1-12
·
IF 2.5
Tang Mingxin,Qin Cong,Sun Xueya,Li Mengwei,Wang Yihui,Cao Jianliang,Wang Yan
Hydrogen (H 2 ) energy, as a clean energy source, has high energy density and durability, while H 2 is flammable and explosive, which requires strict safety technology measures to ensure the safety of high-pressure storage transportation. Therefore, the development of sensitive sensors is needed. In this study, In 2 O 3 microspheres with different Pd loadings were fabricated by hydrothermal method. Compared with the pristine In 2 O 3 gas sensor, the optimal operating temperature of the In 2 O 3 sensor is reduced from 160 ℃ to 80 ℃ after loading Pd. Among the prepared Pd/In 2 O 3 gas sensors, the response value of the 2 at% Pd/In 2 O 3 sensor towards 1000 ppm H 2 is 50.743 at 80 ℃. The response/recovery time is 80 s/235 s. The improved H 2 sensing performance can be ascribed to the chemical and electron sensitization of Pd, and the formation of PdO, PdH x . This study shows that Pd-loaded In 2 O 3 can effectively reduce the optimal operating temperature and enhance the response value for detecting H 2 in the range of 5-5000 ppm. Therefore, this sensor has good application prospects for detecting H 2 at low temperatures.
研究领域:
材料科学
·
传感器技术
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产品关联
DOI
高影响因子
Chemosensors
·
2025
·Vol. 13
·期 2
·45
·
IF 3.7
Wenhao Li,Bo Zhang,Xiangrui Dong,Qi Lu,Hao Shen,Yi Ni,Yuechen Liu,Haitao Song
In this work, WO3/TiO2core–shell (C-S) nanowires (NWs) were successfully synthesized by the coaxial electrospinning method and subsequent high-temperature calcination treatment. After some microscopic structural characterizations, although the prepared WO3–TiO2and TiO2–WO3C-S NWs displayed quite different surface morphologies, both of the shell coatings were uniform and their typical shell thicknesses were extremely close, with mean values of 22 and 20 nm, respectively. In gas sensing tests, WO3/TiO2C-S NWs exhibited good selectivity towards triethylamine (TEA) without significant interfering gases. Compared with bare WO3and TiO2NWs, WO3/TiO2C-S NWs showed better gas sensing performance. Specifically, the optimal operating temperature and response of TiO2–WO3C-S NWs to 100 ppm TEA were 130 °C and 106, which were reduced by 70 °C and increased by 5.73 times compared to bare WO3, respectively. Obviously, the C-S nanostructures contributed to improving the gas sensing performance of materials towards TEA. Finally, some hypothetical sensing mechanisms were proposed, which were expected to have important reference significance for the design of target products applied to TEA sensing.
研究领域:
材料科学
·
纳米技术
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2024
·
IF 2.8
Dongping Huang,Shuifa Shen
Monoclinic BiVO 4 material was successfully synthesized through a hydrothermal method, and silver (Ag) nanoparticles were deposited onto the surface of BiVO 4 using the photo deposition technique. The gas-sensing outcomes demonstrate that the BiVO 4 material loaded with 2 wt% Ag has a good gas-sensing response to isopropanol, which is about three times that of pure BiVO 4 . In addition, it exhibits a fast response within 10 s and well-stability. The improved gas sensing properties primarily come from the catalytic and spillover effect mechanism of Ag.
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
CHEMICAL PHYSICS
·
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
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 3
·1-12
·
IF 2.8
Wang Zhenxing,Luo Qingsong,Huang Yiheng,Chen Yan,Wang Yimu,Feng Changhao
The sensitive and rapid detection of n-butanol gas is crucial for ensuring industrial safety, environmental protection, and biological health. In this study, we employed electrospinning to fabricate a series of CuBi 2 O 4 nanofibers and nanotubes, followed by thorough characterization and analysis of their structural and functional features using XRD, FE-SEM, TEM, and XPS techniques. The gas-sensing performance demonstrates that CuBi 2 O 4 nanotubes (CBO-500) exhibit an exceptionally rapid response to n-butanol, highlighting their potential for use in high-sensitivity n-butanol sensors. The sensor exhibited a response of 12.30–10 ppm n-butanol at 150 °C, with a rapid response time of 2 s and a recovery time of 41 s. Furthermore, the sensors based on CBO-500 nanotubes exhibited excellent selective. In addition, this study elucidates the underlying mechanisms responsible for the gas-sensing properties of CuBi 2 O 4 nanotubes toward n-butanol.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Zuozhe Ding,Qingdong Chen,Hao Zhang,Weiwei Wang,Dongzhi Zhang
Carbon dioxide is one of the typical gases of a lithium battery thermal runaway. In this paper, lanthanum cobaltate (LaCoO3) nanospheres were successfully synthesized by hydrothermal synthesis route, sheet structure MXene nanomaterials were prepared by lithium fluoride (LiF) and hydrochloric acid (HCl) etching aluminum titanium-carbide (Ti3AlC2), and a CO2 sensor assembled by a LaCoO3/MXene nanocomposite was successfully constructed. The nanocomposite was observed and characterized by SEM, TEM, XRD, and XPS, and the gas sensitivity of the composite sensitive material and the single sensitive material to CO2 was systematically compared. The results show that the response of a LaCoO3/MXene nanocomposite sensor to 800 ppm of CO2 reaches 50.47% at the optimum operating temperature of 60 °C, which is 2.94 times higher than that of a pristine LaCoO3 sensor (17.16%). In addition, the LaCoO3/MXene sensors demonstrate low detection limits (50 ppm), short response/recovery times (14/32 s@ 800 ppm), and good long-term stability. The gas sensing properties of the composite may be due to the Schottky heterojunction formed between the LaCoO3 nanospheres and MXene. The results indicate that LaCoO3/MXene nanocomposites are potential CO2 sensing materials at low operating temperatures.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Feng Chen,Mingfu Zhao,Bin Zhang,Gengchen Li,Hong Liu,Zeying Li,Minggang Zhao,Ye Ma
Microplastics (MPs) are widely distributed in the environment, posing significant threats to both ecosystems and human health, and have become a globally recognized pollution issue. In this study, we utilized 11-Mercaptoundecanoic acid (MUDA)-modified gold nanoparticles (AuNPs) to construct a surface-enhanced Raman spectroscopy (SERS) substrate for MPs detection. This substrate was designed at the gas–liquid interface (GLI), with AuNPs enveloping MPs at the interface, enabling in-situ detection of MPs. This approach achieved trace detection of three types of MPs-polystyrene, polyethylene terephthalate, and polycarbonate-with detection limits of 0.02620 μg mL −1 , 0.3276 μg mL −1 , and 0.2060 μg mL −1 , respectively. Additionally, polystyrene particles were dissolved as dispersed molecules in trichloromethane, eliminating the impact of the sizes of MPs, achieving a detection limit of 0.0952 μg mL −1 . To validate the practicality of this detection method, the recovery rates of seawater samples at different spiked concentrations ranged from 96.46 % to 101.52 %. The GLI SERS substrate exhibits higher sensitivity, offering increased possibilities for trace detection of MPs in aquatic environments.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Yong Zhang,Haotian Xiong,Qingdong Chen,Mingcong Tang,Zijian Wang,Jingdu Bian,Dongzhi Zhang
In the automotive industry, improper handling and excessively high temperatures can lead to the failure of lithium-ion batteries. Early failure of lithium batteries can produce trace amounts of gases, such as carbon monoxide (CO) and carbon dioxide (CO2). In this study, hollow spherical nickel oxide (NiO) was prepared using a carbon sphere template method and then combined with Ti3C2Tx (MXene). Most of the NiO hollow spheres had a diameter of about 700 nm. By variation of the ratio of MXene, a carbon monoxide sensor was fabricated, enabling the detection of CO at room temperature. The surface morphology and elemental composition of the materials were analyzed. Experimental and characterization results show that the NiO/MXene composite exhibits faster response/recovery times, higher sensitivity, and better selectivity to CO. The response time of NiO/MXene to 400 ppm of CO is only 8 s, and the recovery time is 16 s. The sensor’s sensitization mechanism was explained through first-principles calculations. This sensor can be applied in lithium battery status monitoring and fault warning systems.
研究领域:
材料科学
·
传感器技术
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
IEEE SENSORS JOURNAL
·
2024
·
IF 4.3
Fei Gao,Zhe Yi Li,Zhao Qi Li,Qiao Nan Wang,Bi Cheng Li,Lei Wang,Meng Zhao,Jing Chang Nan,Cong Wang
This paper presents a novel high sensitivity microwave sensor for low-concentration acetone gas detection. The electrically coupled resonator loaded with an interdigital capacitor (ECR-IDC) structure is the sensing area, with a maximum electric field strength of 3.71 × 10
5
V/m. The SnO
2
-MXene nanocomposites with different MXene doping ratios were prepared using an ultrasound-assisted dispersion method, which significantly changed the conductivity of the gas-sensitive material. Experimental results revealed that the developed sensor exhibited a high sensitivity of 51.7 mdB/ppm and excellent linearity in the detection range of 1-20 ppm, attributed the heterojunction like structure of the SnO
2
-MXene nanocomposites. The introduction of MXene induced a decrease in conductivity, which is beneficial for microwave sensing, and simultaneously increased the active sites of the composite for acetone binding, finally improving the sensitivity of the microwave sensors. The demonstrated high performance of the developed sensor validates its potential in breath analysis, towards future applications in designing novel healthcare devices.
研究领域:
材料科学
·
传感器技术
·
医疗健康设备
✓ 已验证
产品关联
DOI
高影响因子
Advanced Electronic Materials
·
2021
·Vol. 8
·期 5
·2101049
·
IF 7.295
Zhilong Song,Zhixiang Hu,Jingyao Liu,Jia Yan,Huaming Li,Jianjun Jiang,Jiang Tang,Huan Liu
Doping is fundamental to controlling the properties of bulk semiconductors. Although the antimony (Sb V )-doping strategy is widely employed in the design of practical tin oxide (SnO 2 ) semiconductor gas sensors for higher signal-to-noise ratio, challenges remain to dope semiconductor nanocrystals since the diffusion of impurity atoms may be far from realized at the synthesis temperatures used. Herein, a metastable Sb-doping strategy is proposed to overcome the serious receptor-versus-transducer mismatch in SnO 2 quantum wires (QWs). The solvothermal synthesis of colloidal Sb III -doped SnO 2 QWs has been conducted at 180 °C, whereby the antimony amount is varied to optimize the structural and morphological properties for higher surface activity and electrical conductivity. A unique n-type doping mechanism arising from the stable presence of Sb III on SnO 2 (101) facets via Sn II -O-Sb III is demonstrated. Further, the use of sensitive (down to 4 ppb, the lowest detection limit ever reported), fast (response and recovery time of 43 s and 96 s toward 10 ppm of H 2 S) gas sensors for H 2 S detection at near room temperature (40 °C) is showcased. The metastable Sb-doping strategy may pave the way to ultrasensitive gas sensor possessing low power consumption and excellent integration compatibility to satisfy the increasing demand for ubiquitous and reliable gas detection.
研究领域:
材料科学
·
纳米技术
·
半导体物理
·
气体传感技术
✓ 已验证
DOI
高影响因子
JOM
·
2021
·Vol. 73
·期 3
·881-891
·
IF 2.474
Li Yun,Taskinen Pekka,Wang Yuejun,Yang Shenghai,Tang Chaobo,Chen Yongming,Jokilaakso Ari
A promising lead-containing waste recycling method, with sulfur conservation and reductive sulfur-fixing co-smelting process (RSFCS), is proposed. This work investigated the PbSO 4 reduction equilibrium composition, phase conversions, and microscopic transformation mechanisms during the RSFCS process at different temperatures, times, and CO-CO 2 mixtures using thermodynamic modeling, thermogravimetric analysis, x-ray diffraction, and SEM-EDS analysis techniques. At the same time, the gaseous products were collected and analyzed. The results showed that three reduction paths existed: (1) PbSO 4 \( \to ^{{ {\text{CO/CO}}_{{2}} }} \) PbO·PbSO 4 +SO 2 \(\to ^{{ {\text{CO/CO}}_{{2}} }}\) 2PbO·PbSO 4 +SO 2 \(\to ^{{ {\text{CO/CO}}_{{2}} }} \) 4PbO·PbSO 4 +SO 2 \(\to ^{{ {\text{CO/CO}}_{{2}} }} \) PbO+SO 2 \( \to ^{{ {\text{CO/CO}}_{{2}} }}\) Pb; (2) PbSO 4 \( \to ^{{ {\text{CO/CO}}_{{2}} }} \) PbS; (3) PbSO 4 → PbO·PbSO 4 +SO 3 → 2PbO·PbSO 4 +SO 3 → 4PbO·PbSO 4 +SO 3 → PbO+SO 3 . Reduction temperature and CO concentration were determined as major factors in the PbSO 4 reduction. In a relatively weak reductive atmosphere and at low temperature, x PbO·PbSO 4 ( x = 1, 2, 4), PbO, Pb, and SO 2 were the major products. When temperature and the CO concentration increased, PbSO 4 was selectively reduced to PbS, with sulfur in the PbSO 4 fixed in PbS, instead of emitting SO 2 /SO 3 .
研究领域:
冶金学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2021
·Vol. 17
·期 8
·2007803
·
IF 13.281
Xinsheng Wang,Haoyu Bai,Jingrun Yang,Zhe Li,Yuchen Wu,Cunming Yu,Lei Jiang,Moyuan Cao
Lubricant-infused slippery surface exhibits a series of superior properties such as pressure tolerance, self-healing, oil-repellence, etc. Especially when being applied in an aqueous environment, the reliable bubble manipulating ability of slippery surface offers great opportunities to develop advanced systems in the field of gas transport, water splitting, etc. To improve the strength and the functionality of slippery surfaces, a sliced lubricant-infused slippery (SLIS) track is presented here, possessing both flexibility and toughness for underwater bubble manipulation. The rigid slippery slices with hydrophobic porous structure are linked by the liquid bridge of silicone oil, resulting in a continuous lubricant layer for bubble transfer. Taking advantage of this unique assembled structure, the in situ bubble controlling process, that is, pinning and moving, is achieved via the stretching/releasing of an elastic SLIS track. Besides, on the basis of the integrated design, a hypothesis of underwater gas mining is proved in the all-in-one process including the micro-bubble generation, bubble collection, and gas transport. The current design paves an avenue to reinforce the structure of slippery surfaces, and should promote the function of underwater bubble manipulation toward real-world applications.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 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）