ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Min Wen,Cheng Peng,Ming Yao,Chao Wang,Tingzhen Ming,Biaoling Peng,Fuzhi Huang,Jie Zhong,Yi-Bing Cheng,Qi Zhang
The gas–liquid membrane contactor forms a gas–solid–liquid interface and has a high potential for the applications in gas adsorption, catalysis, energy exchange, and so on. Porous superhydrophobic membranes show a great gas separation/adsorption ability. However, the complicated device architecture and the durability issue are normally concerned especially for the continuous circulation of gas and liquid. In this work, we present a free-standing gas-conductive circuit simply formed by connecting the superamphiphobic porous monoliths (SAPMs) to achieve an efficient under-liquid gas adsorption. The porous worm-like SAPM is prepared with low-temperature expandable graphite and polyvinylidenefluoride, exhibiting superamphiphobicity and superaerophilicity after fluoridation. The as-made SAPM circuits can be used as a reliable gas conductor under numerous liquids, such as water, alkaline, acidic, and oily solutions. In this work, the CO2 adsorption capacities of the SAPM circuits are evaluated under NaOH and methyldiethanolamine solutions and the mass transfer rate can reach up to 9.61 mmol m–2 s–1. Moreover, the effective human blood oxygenation process is also demonstrated using SAPM circuits. Thus, the reported SAPM provides an alternative gas–liquid exchanging method and the simplified process could be of great benefit to the cost-effectively large-scale CO2 capture or gas exchanging applications.
研究领域:
材料科学
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环境科学
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生物医学工程
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DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 2
·1-9
·
IF 5.7
Shi Lu,Tang Qiaorong,Yang Bing,Li Baoxin,Yang Chaoyong,Jin Yan
Gas pressure biosensing is a promising portable analysis method. The gas-generation reaction is crucial to its sensitivity, speed, repeatability, and usability. However, very few gas-generation reactions are available for sensitive, safe, and diverse biosensing. Herein, acid-accelerated hydrolysis of sodium borohydride (NaBH 4 ) was explored for the first time to achieve portable and diverse gas pressure biosensing. The slow hydrolysis and hydrogen generation of NaBH 4 in alkaline medium is accelerated with increasing acidity, which increased the gas pressure in a small and sealed tube within 10 min. Thus, a label-free bioassay is easily and specifically achieved once analytes can in-situ generate acid to accelerate the hydrolysis rate of NaBH 4 , such as glucose, acetylcholine (ACh), adenosine triphosphate (ATP) and others. More importantly, analytes without acid generation could be quantitatively and selectively detected by combining target recognition with acid-generated biochemical reactions for enzyme-linked gas pressure biosensing. Inspired by this, aflatoxin B1 (AFB1)-aptamer interaction-triggered strand displacement reaction was combined with glucose oxidation by glucose oxidase (GOD) to detect AFB1 as low as 7.1 pM. Therefore, acid-accelerated hydrolysis of NaBH 4 is powerful for developing portable, cheap, and diverse gas pressure biosensing. It opens up a new way for cheap, universal, and portable biosensing. Graphical Abstract
研究领域:
分析化学
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生物化学
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传感器与生物传感器
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PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Dongping Huang,Peng Yong,Shuifa Shen
The sea urchin-like In 2 O 3 material was successfully synthesized through a simple hydrothermal method . Furthermore, the material underwent surface decoration without adding extra indium ions , resulting in the formation of a thin MIL-68(In) layer on the surface of In 2 O 3 . The obtained In 2 O 3 @MIL-68(In) retains the sea urchin-like morphology while acquiring an additional porous structure. Compared to pure In 2 O 3 , the composite exhibits a significant increase in specific surface area, leading to enhanced gas sensitivity. Notably, it demonstrates exceptional sensitivity towards formaldehyde gas, with a response of 18 at 100 ppm at 300 °C, up to six times more than pure In 2 O 3 . Moreover, In 2 O 3 @MIL-68(In) showcases remarkable selectivity and stability. These findings suggest that surface-modified MOF can enhance gas-sensitive properties.
研究领域:
材料科学
·
化学
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Xiwen Xu,Ying Yang,Wenyuan Pei,Dan Li,Hui Yu,Xiangting Dong,Tianqi Wang
As a classical rare earth oxide, cerium dioxide (CeO 2 ) has played an important role in the realm of gas detection. Nonetheless, pure CeO 2 as a gas sensor material is challenged by a wide band gap, rapid carrier recombination, and high operating temperature, which affects its efficacy. Constructing heterogeneous composite materials is an effective method to remedy this issue. Herein, we introduced polyoxometalate (POMs, cluster formations of rare metal oxides.) electron acceptor into CeO 2 gas sensor for the first time to investigate the effect of POMs on gas sensitive properties. As a result, the CeO 2 /PW 12 gas sensor responds quickly and recovers promptly, showing a value of 8.41 to 100 ppm of toluene gas, which is much higher compared to pure CeO 2 sensor (3.05). And then CeO 2 /PW 12 sensor response recovery time of 6 s/71 s. Selectivity, repeatability, long-term stability and humidity resistance were also comprehensively explored. The results show that the sensor has the highest response value at 1 % PW 12 content. And the sensor showed good long-term stability and humidity resistance. The sensor has a minimum detection limit of 77.434 ppb for toluene. The improved sensing capabilities are a result of the incorporation of PW 12 . It serves as a shallow electron trap, capturing electrons within the conduction band of CeO 2 , thus the electron-hole pairs could be effectively separated. In that way the gas sensing performances of CeO 2 sensor were successfully improved. The research presented in this article outlines a novel approach to creating highly sensitive gas sensors utilizing CeO 2 , offering valuable insights into the utility of polyoxometalates in gas detection applications.
研究领域:
材料科学
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传感器技术
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环境监测
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
·
IF 9.7
Tianyou Wang,Zhou Shen,Qingxue Li,Di Wu,Xiaoping Yin,Yan Qin,Leyong Zeng
The reactive oxygen species (ROS) mediated catalytic therapy is severely hindered by the insufficient endogenous substrates, and gas therapy is an emerging therapeutic method, which can improve ROS-mediated antitumor efficacy through modulating oxidative stress. In this study, by coating periodic mesoporous organosilica (PMO), loading sodium nitroprusside (SNP) and depositing ultrasmall Au nanoparticles (AuNPs) on the surface of platinum‑palladium (PtPd), we reported a multi-enzyme nanozyme (PtPd@PMO@SNP@Au) to enhance catalytic/gas therapy through producing ROS storm and spatiotemporally regulating dual-gas release. The PtPd@PMO@SNP@Au nanozyme exhibited the multi-enzyme-like activities of glucose oxidase, catalase, peroxidase, and oxidase, in which the cascade reactions significantly triggered the ROS storm. Moreover, the PtPd@PMO@SNP@Au nanozyme possessed the glutathione (GSH) depletion and near-infrared II photothermal performances, by which the GSH-responsive hydrogen sulfide (H 2 S) and photothermal-responsive nitric oxide (NO) release were achieved. By combining the ROS storm generation and spatiotemporal-regulated NO/H 2 S release, the developed PtPd@PMO@SNP@Au nanozyme greatly induced the cell apoptosis, and enhanced the catalytic/gas therapy of tumors.
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高影响因子
Journal of Materials Chemistry A
·
2014
·Vol. 2
·期 33
·13641-13647
·
IF 0
Xuejuan Wan,Jilei Wang,Lianfeng Zhu,Jiaoning Tang
In order to investigate the effect of morphology and size on detection sensitivity of ethanol vapor, nano-scale cubic or spherical Cu2O with similar particle sizes were prepared through reductive solution chemistry routes. Experimental results indicated that both size and morphology of Cu2O particles are playing an important role in gas detection sensitivity, and the mutual competition and mutual dependence relationship coexisted between the two factors. Particle morphology and morphology-dependent particle stacking mode may play a dominant role in a relatively lower gas atmosphere (S50, S260 > C50, C340). As the concentration of ethanol vapor exceeds 200 ppm, the size-dependent effect on gas-sensing gradually appears, and nanoparticles with relatively smaller particle size (C50, S50 > C340, S260) are more advantageous in the gas sensing process. At a much higher ethanol partial pressure, Cu2O nanoparticles with smaller size and cubic morphology exhibit the strongest gas-sensing response. The mechanism of these gas-sensing divergences is suggested to involve in the explanation of effective contact surface, width of charge accumulation layer (CAL) affected by gas concentration, energy bands bending changes and particle contact mode.
研究领域:
材料科学
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传感器技术
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DOI
LANGMUIR
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2022
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IF 4.331
Hengxin Fang,Juncheng Qi,Yao Wang,Kaiwei Yuan,Lijuan Zhang,Jun Hu
Micropancake, a flat domain with micrometer-scale lateral size and a few nanometer thickness, is usually accompanied by the generation of interfacial nanobubbles at the liquid/solid surfaces. Unlike the nanobubbles, micropancakes are difficult to be produced efficiently, impeding further investigations of their mysterious properties. Very recently, An et al. even argued that the previously observed micropancakes were most likely the contaminate, not the gas layers. Herein, to reveal the nature of micropancakes with solid evidence, we presented the in situ characterization of micropancakes at a highly oriented pyrolytic graphite (HOPG) surface produced by the ethanol–water exchange or gas-supersaturated water. By washing with deeply degassed water (DW), the dissolution of those micropancakes was clearly observed, indicating that they may very well be composed of gas. In addition, the analysis of the force measurements showed the intrinsic differences between those gaseous micropancakes and the insoluble organic films. The data and results supported the interpretation that the real existence of gas micropancakes at liquid/solid surfaces.
研究领域:
材料科学
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界面化学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2022
·
IF 9.221
Donghui Li,Dan Han,Yi Chen,Zhihua Liu,Xiaoru Liu,Lulu Liu,Xiaomei Han,Xiuli He,Shengbo Sang
Accurate detection of NO 2 gas with low concentration and high stability is of great significance to ecological protection and human health. In this work, hollow porous GaN nanofibers were fabricated by a low-cost solvothermal method and controlled nitridation process. Systematic characterizations results demonstrate large specific surface and abundant adsorpation sites of the GaN nanofibers. Excellent NO 2 sensing performances were tested at 200 °C, including the high sensitivity of 22.9 (200 ppm), rapid response time within 11 s, high selectivity, and low detection limit (0.5 ppb). Furthermore, the anti-interference ability, cross-sensitivity characteristics, and long-term stability of the sensor in the actual working environment were also systematically investigated. The surface depletion layer model and the change of the potential barrier were used to explain the enhanced gas-sensing performance. The fabricated GaN sensor offered a promising candidate for real-time monitoring of sub-ppb-level NO 2 gas in actual environments.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Weiwei Guo,Yuting Shuai,Xuecheng Liu,Jie Zhang,Jiang Wang,Khaled H. Mahmoud,Zeinhom M. El-Bahy,N.M. Mubarak
N-butanol, a poisonous and flammable liquid, has great threat to human life and property security, which is of importance to monitor n-butanol in the environment. In this paper, the pure and Co-doped BiVO 4 polyhedrons are successfully synthesized by hydrothermal method . A series of characterizations, such as XRD , XPS, SEM, UV, and EIS, etc., are used to analyze the crystal structure, morphology, element compositions , optical and electrochemical properties of the as-prepared samples. The optimal sample (3Co-BiVO 4 ) exhibits high gas response (51.65) toward 100 ppm n-butanol, which is around four times higher than that of pure BiVO 4 at 300 °C. In addition, the 3Co-BiVO 4 also has fast response-recovery time, good humidity resistance, favorable selectivity to n-butanol, etc. Based on the above characterizations and gas sensing test results, the enhanced gas sensing mechanism for 3Co-BiVO 4 is proposed. This work provides a feasible strategy to fabricate BiVO 4 polyhedron by doping Co to greatly enhance the gas sensing properties for n-butanol.
研究领域:
材料科学
·
环境监测
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DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Song Xiao,Yuhang Xue,Zhanyuan Li,Chengying Wu,Yifan Zhang,Peng Wu,Ju Tang,Xiaoxing Zhang,Hongye Yuan,Yi Li
Perfluoroisobutyronitrile (C4F7N), an eco-friendly insulating gas, has been extensively utilized in diverse gas-insulated equipment (GIE) to replace the most potent greenhouse gas SF6. Nonetheless, given the low toxicity of C4F7N, the potential leakage risk at a high-pressure operational environment cannot be overlooked, making the development of highly sensitive gas sensors for leak detection essential. Herein, Co3O4 was selected as a specific gas sensing material for C4F7N detection based on the density functional theory screening. The Co3O4-based gas sensor was prepared, and its response performance was systematically evaluated. The interaction mechanism between Co3O4 and C4F7N was also examined by the oxygen vacancy theory. The sensor demonstrates a low detection limit of 0.15 ppm at its optimal operating temperature of 300 °C, exhibiting exceptional selectivity and repeatability, with a stability response time of 55.5 s and recovery time of 1478 s. The sensor’s application potential under actual working settings was validated using a simulated leakage test. Relevant results provide guidance for the leakage monitoring of the C4F7N-based GIE.
研究领域:
材料科学
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环境科学
·
电气工程
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Bingyang Lu,Junchang Guo,Hao Yang,Xiao Han,Peng Yu,Shengjun Cheng,Zhenxu Shi,Dehui Wang,Weifeng Zhao,Jing Luo,Xu Deng
Gas exchange membranes, as the crucial components of extracorporeal membrane oxygenation (ECMO) systems, enable efficient O 2 /CO 2 exchange in blood while maintaining adequate oxygen saturation in patients. However, clinical gas exchange membranes remain prone to thrombosis complications, which severely compromise their gas exchange effectiveness. To address this, we propose a blood-repellent gas exchange membrane (BRGEM) that helps in preventing thrombosis due to its minimal solid-liquid contact areas, while significantly enhancing gas exchange through a gas-liquid direct contact diffusion strategy. Notably, the BRGEM exhibits a 22.09-fold reduction in thrombus formation without anticoagulants compared to commercial ECMO membranes, demonstrating its exceptional anti-fouling properties. Furthermore, the membrane enables rapid oxygen recovery in the acute respiratory distress syndrome rabbit model, achieving approximately 12.97-fold improvement. We anticipate this strategy will significantly advance the development of next-generation blood oxygenation membranes and artificial lung technologies, offering transformative potential for future clinical applications.
研究领域:
生物医学工程
·
膜技术
·
呼吸医学
·
生物材料
·
人工器官
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产品关联
DOI
高影响因子
Gas Science and Engineering
·
2023
·
IF 0
Xiao-Hui Wang,Xiao-Jie Xu,Jin Cai,Hua-Xing Zheng,Yi-Xin Chen,Wei-Xin Pang,Yong Yu,Chang-Yu Sun,Guang-Jin Chen
Hydrate-based CO 2 sequestration is a new CCUS technology. The main concern for this method is the safe and long-term storage of CO 2 , which is related to the gas concentration in the surrounding aqueous solution. This work conducted a series of experiments to measure the saturated CO 2 concentration in aqueous solution from gas-liquid (V–L w ) two-phase equilibrium system, gas-liquid-hydrate (V–L w –H) three-phase equilibrium system up to hydrate stability region. The CO 2 solubility curves in wider temperature and pressure range from V–L w two-phase equilibrium system to V–L w –H coexistence system were achieved in this work. When decreasing the temperature from V-L w two-phase region into hydrate stability region under the constant pressure, the CO 2 solubility in liquid phase would firstly increase with the decrease of temperature, and reach the maximum value at the V–L w –H three-phase equilibrium temperature . After that, it would conversely turn to decrease with the decrease of temperature in hydrate stability region. When increasing the pressure from V–L w two-phase region into hydrate stability region at constant temperature, the CO 2 solubility would increase with the increase of pressure up to the point where the system pressure is equal to V–L w –H three-phase equilibrium pressure . After that, it barely changes with the increase of pressure in hydrate stability region, indicating that the intrinsic formation reaction that the dissolved gas combines with water molecules to form gas hydrate is fast step, and the gas molecules dissolve at gas-liquid interface is the rate-determining step for hydrate formation process. The CO 2 solubility in brine under V–L w –H three-phase equilibrium conditions is higher than that in deionized water , which may contribute to revealing the mechanism that salt can promote hydrate formation rate at low concentrations.
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