CRYSTAL GROWTH & DESIGN
·
2026
·Vol. 26
·期 17
·7017-7023
·
IF 3.6
Gu Run,Gui Jingjing,Yang Linlin,Qi Meizhou,Gao Lei,Bi Wentuan
Sulfide solid electrolytes are pivotal
for the advancement of all-solid-state
lithium batteries due to their superior ionic conductivity and mechanical
ductility. However, their commercialization is severely hindered by
inherent moisture sensitivity, which leads to structural degradation
and hazardous H 2 S gas generation. Addressing this challenge
without compromising ionic conductivity remains a significant hurdle.
Herein, we develop a gas-phase surface-engineering strategy for in
situ doping that simultaneously enhances the moisture tolerance and
electrochemical performance of commercial solid-state electrolytes.
Using low-melting-point BiBr 3 as a volatile doping precursor,
Bi and Br are uniformly incorporated into commercial Li 6 PS 5 Cl (LPSCl) particles through a sealed heat treatment
at 500 ° C. The volatilization of BiBr 3 promotes homogeneous
gas–solid contact and reaction, yielding Bi/Br- co -doped LPSCl with substantially improved resistance to moisture-induced
degradation. All-solid-state lithium batteries (ASSLBs) employing
this electrolyte exhibit markedly improved rate capability and more
stable cycling performance compared to ASSLBs using pristine LPSCl.
This work provides a facile and effective pathway to simultaneously
achieve high moisture tolerance and excellent electrochemical performance
in sulfide solid electrolytes.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-14
·
IF 15.7
Cao Yuanming,Tan Ji,Sun Tingting,Deng Yechuan,Zhang Min,Guan Shiwei,Zhang Xianming,Wei Chao,Huo Panpan,Zhuo Mingpeng,Zhu Hongqin,Qiu Jiajun,Liu Xuanyong
Hydrovoltaic technologies that generate electricity by absorbing or transferring free water without chemical reactions have been explored as potential candidates for renewable energy. Self-powered flexible sensors, including hydrovoltaic fibers, are becoming an important research direction in the field of renewable energy. However, integrating sensing and power generation in functional fibers remains challenging due to the need to regulate water movement to achieve performance differences. Here, we present a gas-liquid two-phase flow spinning method, inspired by spider multimodal spinning, that uses bubble-triggered spinning-liquid deformation to fabricate hollow, solid spindle, and ratchet tooth-shaped fibers. These structures alter water adsorption and transfer behaviors, making them suitable for targeted applications in hydrovoltaic devices for energy and sensing fields. Shaped fibers prepared from alginate-bridged MoS₂ enable a wide range of hydrovoltaic applications. The obtained fiber has a power density of 2.18 mW/cm 3 , stable operation at 2.1 V for 43 hours, and sensitivity of 9.36 mV/RH%/s, leading to the development of smart masks for nasal cycle monitoring, diagnosis, and therapy as potential applications. Spinning materials were extended to materials such as carboxymethyl cellulose, polyvinyl alcohol, etc., inspiring the design of structure-responsive hydroelectric materials and advancing textile electronics.
研究领域:
材料科学
·
能源技术
·
生物医学工程
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Yao Wang,Zhihua Zhao
Amine gases have become essential indicators for assessing seafood spoilage, with triethylamine (TEA) standing out due to its close association with the decay process. Effective detection of TEA in complex environments is therefore crucial. However, current TEA sensors often suffer from limitations such as low sensitivity, poor selectivity, or the need for high operating temperatures. In this work, a highly efficient TEA gas sensor which based on MoV 2 O 8 was successfully fabricated through hydrothermal reaction and assisted calcination. Gas sensing tests demonstrated a response of 2.63 towards 100 ppm TEA at the optimal working temperature of 160 ℃, exhibited good linearity at low TEA concentrations. Additionally, experimental results confirmed that the sensor possesses excellent selectivity, reproducibility, and stability. The gas sensing mechanism was further analyzed in depth. Finally, a TEA detection device based on MoV 2 O 8 was designed to detect TEA emissions from decayed marine fish.
研究领域:
材料科学
·
食品科学
·
环境监测
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhihua Zhao,Jingzhao Tian,Xiaobei Xu,Chunhua Zheng,Lan Wu
Elevated concentrations of nitrogen dioxide (NO 2 ) pose detrimental effects on the environment, contributing to pollution in water bodies, soil, and the atmosphere. Moreover, NO 2 , being a potent oxidant, can directly impinge upon the respiratory system, precipitating a range of pulmonary illnesses. Consequently, rigorous surveillance and assessment of NO 2 emissions are of paramount importance for safeguarding environmental integrity and public health. To address this challenge, we fabricated a NO 2 gas sensor using VS 2 /Ti 3 C 2 T x /TiO 2 nanocomposites. The sensors were thoroughly characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). In our tests, the M/v-2 sensor showed excellent performance, with a response of 4.73 at 180 °C to 50 ppm NO 2 , which is 2.5 times that of the Ti 3 C 2 T x /TiO 2 sensor. Additionally, its response time was short (26 s), the recovery time was even shorter than the response time (15 s), and it demonstrated a high response speed to low concentrations of NO 2 (≤10 ppm). Furthermore, the long-term stability was excellent over a period of 45 days. The gathered characteristics indicate that our VS 2 /Ti 3 C 2 T x /TiO 2 gas sensor has great potential for NO 2 detection.
研究领域:
环境科学
·
材料科学
·
传感器技术
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Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Cheng Yu Xu,Shu Yi Ma,Tian Yuan Dong,Ji Ming Liu,Jin Sha Wei,Hong Tao Jiang,Ping Ni,Ge Ge Fan,Jia Yun Guo
Triethylamine (TEA) is typical hazardous volatile organic gas (VOCs), it is particularly important for us to effectively detect triethylamine in complex places. In this work, high efficiency triethylamine gas sensor based on SmVO 4 was successfully obtained by means of hydrothermal reaction and assisted calcination. Characterization of analytical materials, SmVO 4 octahedral nanoparticles formed clusters similar to pomegranate fruits. There is a trace +4 valence state of vanadium in the material, which contributes to the oxidation-reduction reaction between the target gas and the surface of the material. Gas sensitive test results found that the SmVO 4 sensor still has a 2.45 response to the target gas (triethylamine) at low concentrations (1 ppm). SmVO 4 shows excellent selectivity for triethylamine, with a response value more than three times that of other gases. In 25 days, it shows excellent stability and fast response recovery time (15 s/40 s). In addition, the gas sensing mechanism is analyzed.
研究领域:
材料科学
·
环境科学
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ANALYTICA CHIMICA ACTA
·
2015
·
IF 4.513
Sheng-Ming Xie,Jun-Hui Zhang,Nan Fu,Bang-Jin Wang,Ling Chen,Li-Ming Yuan
Molecular organic cages as shape-persistent organic molecules with permanent and accessible cavities have attracted a lot of interest because of their importance as host-guest systems. Herein, we report a chiral porous organic cage (POC) CC9 diluted with a polysiloxane OV-1701 to fabricate a CC9-coated capillary column, which was used for the high-resolution gas chromatographic separation of organic compounds, including positional isomers and racemates . On the CC9-coated capillary column, a large number of racemic compounds such as chiral alcohols, esters, ethers and epoxides can be resolved without derivatization . By comparing the chiral recognition ability of the CC9-coated column with the commercially available β-DEX 120 column and the POC CC3-R coated column recently reported by our group, the CC9-coated column offered good resolution during the separation of some racemates, that were not separated using the β-DEX 120 column or POC CC3-R coated column. Therefore, the CC9-coated column can be complementary to the β-DEX 120 column and CC3-R coated column. The results indicated that the CC9-coated column exhibited great potential for application in the separation of positional isomers and enantiomers with great selectivity , high resolution and good reproducibility.
研究领域:
分析化学
·
材料科学
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SURFACE & COATINGS TECHNOLOGY
·
2025
·
IF 6.1
Lang Guo,Liqin Wang,Siyu Zhang,Lebin Wang,Zeduan Pan,Xin Leng,Zhuang Ma,Xing Zhao
Corrosive solutions and gases are the most critical factors in the corrosion of metal artefacts. Preventing both electrolyte and gas corrosion without altering the appearance remains a challenge. In this paper, a superhydrophobic coating BTA-B72-FSiO 2 was prepared by stepwise treatments using benzotriazole (BTA), Paraloid B72 (B72) and fluorinated SiO 2 (FSiO 2 ) materials. The coating resulted in a colour difference of only 2.01 and no significant bleaching, in line with the requirements for artefact treatment. With a punctiform, rough structure, the surface exhibited superhydrophobic, anti-adhesive, anti-fouling and self-cleaning properties. The electrochemical corrosion current of the coated bronze was three orders of magnitude lower than that of the untreated substrate, and the impedance modulus at 0.1 Hz was four orders of magnitude higher than that of the untreated substrate. The coating showed no significant corrosion after one hour of immersion in HCl solution at pH = 1. The coating had excellent corrosion resistance due to the insulation of the corrosive electrolyte by air pockets on the FSiO 2 surface. Furthermore, the coated bronze substrate did not corrode significantly in the corrosive gas environment for 18 d. The inner B72 film provided a barrier to corrosive gases, making the coating resistant to gas corrosion. Finally, the synergistic effect of FSiO 2 and B72 provided dual protection against corrosive electrolytes and gases. This coating is expected to offer a new way of protecting metal artefacts in complex environments.
研究领域:
文化遗产保护
·
材料科学
·
腐蚀工程
·
表面化学
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Processes
·
2025
·Vol. 13
·期 10
·3277
·
IF 2.8
Ru Yuan,Haoyuan Sun,Qian Zhang,Le Zhang,Shidong Yuan,Fangwu Liu,Tao Zhang
A stable atmosphere is very important for long-term life science experiments with small mammals in sealed habitats. In this study, we constructed a multi-stage, solid-state purification system to regulate and control the supply of oxygen and remove carbon dioxide, humidity, and trace contaminants in a sealed metal box. Lithium hydroxide was used as the material to absorb CO2; molecular sieves and humidity-indicating silica gel were used as dehumidification material; and activated carbon-based sorbent was used to remove ammonia and hydrogen sulfide. We evaluated the performance of the system by implementing a sealed culture test with mice for 7 days. The pressure, relative humidity, oxygen concentration, carbon dioxide concentration, and ammonia/hydrogen sulfide concentration in the sealed box were maintained at 101–103 kPa, 30–36%, 19–21%, <1000 ppm, and the main goal of this study was to test for single gas absorption. In the future, we will investigate the competitive effect of multi-gas mixtures.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Mingxin Liu,Mingming Guo
Polymers have broad application potential in the field of gas sensing, yet research on their sensitisation mechanisms remains limited. In this work, non-conductive polyacrylonitrile (PAN) was converted from a linear to a polyconjugated structure by heat treatment, thereby imparting conductivity. CsPbBr 3 was further introduced to optimise the electronic structure and surface properties, significantly improving the sensitivity to ethanolamine (EA). The resultant CsPbBr 3 /PAN sensor demonstrated exceptional gas selectivity, exhibiting a response value of up to 5.09 at 100 ppm EA. Remarkably, the sensor exhibited a response time of merely 72 s without the need for temperature or ultraviolet irradiation assistance, and it retained stability for a period of two months. This study provides a novel approach to enhancing the gas sensitivity of polymers through electronic structure regulation and material structure optimisation, offering significant theoretical and practical insights for the design and development of high-performance gas sensors.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Peng Wang,Tong Song,Guanggang Gao,Katarzyna Matras-Postolek,Ping Yang
SnO 2 clusters were embedded in superior thin TiO 2 nanosheets to form heterostructures via a two-step solvothermal synthesis . Superior thin TiO 2 (B) nanosheets were firstly prepared, in which these nanosheets exhibited homogeneously sheet structure without aggregation. After deposition of SnO 2 clusters, the mixture phase consisted of anatase and TiO 2 (B) was obtained even though the nanosheet morphology remained unchanged. The ratio of SnO 2 and TiO 2 was adjusted to get enhanced gas sensing performance. The gas sensing activity of samples for volatile organic compounds including acetone, ethanol and triethylamine was tested. Results indicates that SnO 2 /TiO 2 heterostructure with an optimal SnO 2 weight ratio of 10% is remarkably responsive to acetone, ethanol and triethylamine . Especially, the response time to triethylamine is only 10 s. In the case of 2 ppm, the sample still revealed a significant response to triethylamine. The enhanced sensing performance has to ascribed to the significant increase of reactive active sites by loading SnO 2 clusters. In addition, ultra-thin morphology and mixed phase composition of TiO 2 also enhance the property of the composite. This work supplied an idea for the preparation of SnO 2 based gas sensors.
研究领域:
材料科学
·
化学
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ACS Sensors
·
2025
·
IF 9.1
Wenbin Ren,Jinfeng Luan,Liang Yin,Huijuan Chen,Changchun Wang,Pinhua Zhang,Guangliang Cui,Li Lv
The development of real-time trace-level NO2 quantification platforms that can be operated at room temperature constitutes a critical advancement for occupational safety and public health monitoring systems. This study demonstrates a room-temperature NO2 sensor using MXene–Cu2O composites prepared via a hydrothermal method. Systematic evaluation of MXene-introduced effects identified the 0.84 wt % MXene–Cu2O composite as optimal, exhibiting 4-fold enhanced sensitivity and shorter response (55 s)/recovery (35 s) time compared to pure Cu2O. Additionally, the sensor exhibits a low detection limit (10 ppb), high selectivity, great reversibility, and long-term stability. The enhanced sensing performance originates from precisely engineered interfacial architectures between MXene and Cu2O, which effectively adjust the charge-transfer behavior through the conduction tunnel in the sensing material. Furthermore, oxygen vacancy engineering creates defect-mediated adsorption centers that promote selective NO2 chemisorption through charge polarization effects. This research offers a novel strategy for designing optimized structures to enhance the sensitivity of MOS-based materials for NO2 gas detection.
研究领域:
材料科学
·
环境监测
·
化学传感器
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Carbon Capture Science & Technology
·
2025
·
IF 10.5
Dudu Li,Zhifang He,Ying Chen,Zelong Xu,Zibo Yang,Hao Zhang,Zhihua Qiao
Carbon nanotubes (CNTs), known for their elevated specific surface area, exemplary mechanical properties and thermal stability, are regarded as optimal reinforcing fillers for the fabrication of mixed matrix membranes (MMMs). In this study, self-supported MMMs were prepared using melted zeolitic imidazolate framework (ZIF), denoted ZIF-62 glass, as the continuous phase and multi-walled CNTs (MWCNTs) particles as the dispersed phase. The resulting membranes were thoroughly characterized, and the effect of different incorporation amounts of MWCNTs on the gas separation performance was investigated. It is noteworthy that at an incorporation amount of 4 wt. % MWCNTs, the ideal selectivity of prepared self-supported ( a g ZIF-62) 0.96 (MWCNTs) 0.04 MMM for CO 2 /N 2 and CH 4 /N 2 was 31.2 and 8.6 respectively, exceeding the 2019 Robeson upper bound. The results demonstrated that MWCNTs have excellent gas transport properties and significantly enhance the separation performance. Furthermore, the self-supported ( a g ZIF-62) 0.96 (MWCNTs) 0.04 MMM also exhibited excellent mechanical properties and pressure resistance, making them highly promising candidates for advanced gas separation applications. This study not only highlights the effectiveness of MWCNTs as functional fillers in MMMs but also presents a novel approach for designing high-performance gas separation membranes.
研究领域:
材料科学
·
化学工程
·
纳米技术
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