LANGMUIR
·
2024
·
IF 3.7
Wenqing Han,Yehai Yan,Huifang Wang,Jinzhong Li,Ping Zhao,Zhihao Liu,Fei Yu,Jian Cui,Guangfa Zhang
Solar-driven interfacial water evaporation has become one of the most promising approaches to effectively harvesting freshwater, yet the fabrication of high-performance and multifunctional solar interfacial evaporators (SIEs) still remains a huge challenge to date. In this study, a multifunctional MXene and Fe-MOF@cellulose acetate/polyvinylpyrrolidone (MXM@CP) SIE was prepared via a facile “electrospinning and suction filtration deposition” coupling strategy. Thanks to the incorporation of MXene, MXM@CP displayed excellent photothermal conversion performance. Together with the fast water transport channel provided by the porous cellulose acetate electrospinning substrate, a remarkable solar-driven water evaporation property was achieved for MXM@CP, showing a higher water evaporation rate of 1.1 kg m–2 h–1 under one sun irradiation. Moreover, the resultant composite film also exhibited excellent Fenton catalytic activity to effectively degrade volatile organic compounds (VOCs) due to the synergistic effect of the MXene and Fe-based MOF (Fe-MOF). Particularly, a relatively higher degradation rate of 82.8% was acquired for the resulting evaporator toward the benzene contaminant. These results provide new insights into the construction of high-performance and multifunctional SIEs toward clean freshwater collection from the VOC-contaminated water system.
研究领域:
材料科学
·
环境科学
·
能源科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Jingwen Li,Mingqiang Li,Haochen Weng,Shuailiang Xu
Chloride ion batteries (CIBs) are considered promising candidates in the field of batteries. Safety concerns are a major issue in battery technology, which can be effectively addressed by using water-in-salt electrolyte. However, traditional CIBs suffer from issues such as poor lifespan and low cycling capacity. Therefore, our research proposes a novel aqueous CIB composed of a VOC (Vanadium pentoxide doped with graphite) cathode, a zinc anode, and (CH 3 ) 4 NCl + LiCl aqueous electrolyte for the first time. The developed battery boasts advantages such as low cost, arbitrary folding, lightweight design, and overall safety. The battery exhibits a high discharge platform of approximately 2.5V and considerable discharge capacity, reaching a maximum of 3.49mAh cm −2 at a current density of 1A g −1 . After 200 cycles, the capacity retention rate remains around 77 %. Notably, the battery is very simple to fabricate and burn in flames at a temperature of 1300 °C without explosion. And it is also able to work normally when subjected to folding, rolling, and piercing. This low-cost, flexible, and safe novel aqueous chloride-ion battery holds great application potential in portable devices, automotive, military, and other industries, opening up new possibilities for the future development of batteries.
研究领域:
能源材料科学
·
电化学
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产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Xingchun Zhai,Junjie Li,Weiwei Cheng,Xiaolu Li,Yongheng Zhang,Bingxue Cao,Junjie Wen,Ninghui Zhu,Da Wu,Tao Wang,Fuzhen Xuan,Guoyue Shi,Min Zhang
This study introduces a radial-hierarchical, diffusion-enhanced spatiotemporal sensing paradigm for volatile organic compound (VOC) analysis via an integrated microchamber paper-based chromatomimetic e-nose. The proposed system synergizes interlayer spatiotemporal dynamics with planar spatial variance by employing a radially symmetric electrode array and a hierarchical porous chemoresistive ink (CuP@G). This design leverages molecular diffusion gradients across the sensing plane, enabling precise discrimination of complex VOC mixtures through multidimensional “spatiotemporal fingerprints”. A physics-informed framework integrates molecular transport principles with multitask learning convolutional neural network (MTL-CNN) analytics, achieving unprecedented resolution in real-sample classification. Systematic validation demonstrates superior performance in discriminating diverse VOCs, binary mixtures, and authentic tobacco samples (origin and level classification accuracy: 92–99%). This work establishes a scalable blueprint for high-fidelity VOC analytics, bridging gas diffusion physics with intelligent signal processing to advance e-nose technology toward precision-driven design.
研究领域:
化学传感
·
人工智能
·
微流控技术
·
环境监测
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传感器技术
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分析化学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Neng Ye,Junchi Zheng,Xin Ye,Jiajia Xue,Dongli Han,Haoshu Xu,Zhao Wang,Liqun Zhang
Nano-silica is an important component for producing elastomer composites used for fabricating “green tires.” However, the poor dispersion of silica particles in the rubber matrix and the emission of volatile organic compounds (VOCs) during the silica modification limit the applications of the modifiers. Here, bis-epoxypropyl polysulfide (BEP), a novel epoxy-type coupling agent, was designed and synthesized for nano-silica modification to cause an interfacial interaction between nano-silica and the rubber matrix and avoid VOC emission. The thermogravimetric analysis result and the bound rubber content show that BEP effectively built a bridge between the nano-silica and the rubber, which led to a strong interfacial effect and promising mechanical performance characteristics. The silica dispersion in solution-polymerized styrene-butadiene rubber (SSBR) was studied using a transmission electron microscope and a rubber process analyzer, and the results demonstrate that BEP could significantly improve silica dispersion. The static and dynamic mechanical performance results indicate that BEP is a valid coupling agent that can achieve silica/SSBR composites with high moduli and reinforcement indices. Moreover, the combination of BEP and bis-(γ-triethoxysilylpropyl)-tetrasulfide (TESPT) was also found to demonstrate a synergistic effect , which resulted in excellent static and dynamic performances of silica/SSBR composites for preparing higher-energy-efficient “green tires.”
研究领域:
材料科学
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高分子化学
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橡胶技术
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纳米技术
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产品关联
DOI
高影响因子
Wood Material Science & Engineering
·
2023
·
IF 2.2
Zhiping Wang,Anmin Huang,Shifeng Zhang,Yingying Su,Yuejin Fu
Wood emits volatile organic compounds (VOCs) that can affect people’s health and air quality. Based on advanced oxidation processes (AOPs), sulfate radicals produced via thermally-activated persulfate (Na2S2O8, KHSO5) can minimize VOCs. This research aims to apply this technique to minimize the VOC content in Pinus radiata. The results showed that terpenes and alcohols were the main VOCs emitted from Pinus radiata, which were greatly minimized using four treatments; however, acetic acid and 3-furaldehyde emissions increased. Furthermore, the temperature and oxidizing agent contributed to VOC degradation. Characterization results, including FTIR, XRD, color tests, and compressive strength indicated that the AOP treatment caused only a slight decline in the wood properties, while effectively reducing VOC emissions by as much as 32.75–61.05%.
研究领域:
环境科学
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材料科学
·
化学工程
·
林业
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jialin Li,Shaowei Liu,Amil Aligayev,Hao Jiang,Muhammad,Shenhao Wang,Xin Yu,Jin Tao,Jiaqi Wang,Agnieszka Jastrzębska,Qing Huang
Hexanal, a volatile organic compound (VOC), is a potential biomarker for the early detection of lung cancer. In this study, we developed a dual-mode flexible biosensor that integrates surface-enhanced Raman scattering (SERS) and colorimetric detection for the quantitative analysis of hexanal in human exhaled breath. The biosensor employs Ag nanocubes wrapped with Co-Ni layered double hydroxide (AgNCs@Co-Ni LDH) as a functional matrix, offering both superior SERS enhancement and efficient VOC adsorption properties. To achieve selective detection, AgNCs@Co-Ni LDH was incorporated into agarose hydrogels along with 3-methyl-2-benzothiazolinone hydrazone (MBTH). The resulting MBTH-AgNCs@Co-Ni LDH/hydrogel patches facilitate the oxidation of hexanal, enabling simultaneous colorimetric and SERS signal generation, while producing acrizine, a blue-colored reaction product. This hydrogel-based dual-mode sensing platform exhibits high selectivity, excellent stability, and precision in SERS-based hexanal detection. The detection limit for the SERS method was determined to be as low as 3.34 × 10 −13 M. Furthermore, developed and optimized compact CNN-based multi-terminal intelligent recognition system for enhanced hydrogel-patch detection through AI-driven, portable, and real-time colorimetric analysis. Therefore, this work not only enables the effective detection of hexanal in the exhaled breath of suspected lung cancer patients, underscoring its potential for early lung cancer screening, but also establishes a foundation for the development of multimodal hydrogel biosensors for broader applications in disease diagnosis.
研究领域:
生物传感器
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纳米技术
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癌症诊断
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分析化学
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生物医学工程
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医疗人工智能
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呼吸系统疾病筛查
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2020
·
IF 9.038
Chi Zhang,Xue Gao,Jinchao Qin,Qingkai Guo,Haoli Zhou,Wanqin Jin
The treatment of VOCs (volatile organic compounds) in waste streams is very important. Herein, we propose to use a network microporous polyimide (PI) membrane for the molecular sieving of nitrogen over VOC molecules to control their emission. 2,6,14-triaminotriptycene (Trip) was reacted with aromatic dianhydride monomers, such as 3,3′,4,4′-benzophenone tetracarboxylic dianhydride (BTDA), to synthesize ultramicroporous polyimides, which readily form composite membranes via solution coating. The properties of the PIs were characterized by X-ray photoelectron spectroscopy (XPS), Brunner-Emmet-Teller (BET) analysis, etc., which validated the formation of a network structure and ultramicroporosity in these polyimides. Therefore, the outstanding separation performance for the separation of nitrogen over VOCs, such as cyclohexane , by molecular sieving was obtained by using these membranes; a rejection higher than 99 % was realized with a permeability of approximately 2000∼2600 Barrer under a temperature of 25 °C and feed concentration of 30,000 ± 2000 ppm. Finally, the stability of the Trip-BTDA-PI membrane over time was studied.
研究领域:
材料科学
·
环境工程
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DOI
高影响因子
ADVANCES IN ATMOSPHERIC SCIENCES
·
2021
·Vol. 38
·期 7
·1238-1251
·
IF 3.158
Zhang Hailiang,Xu Yongfu,Jia Long,Xu Min
Acetaldehyde is one of the important VOC species of O 3 precursors in the atmospheric environment. The influences of relative humidity (RH) and initial VOC/NO x ratio ( R CN ) on the formation of O 3 are studied in smog chamber experiments, and the MCM v3.3.1 mechanism of acetaldehyde is modified based on the experimental results. In low-RH conditions (RH = 11.6%±1.1%), the O 3 concentration at 6 h increases first and then decreases with the increase of R CN , and the R CN at the inflection point of O 3 concentrations is 3.2. In high-RH experiments (RH = 78.8%±1.0%), variation of the O 3 concentration at 6 h with R CN is similar to that in low-RH experiments, but the R CN at the inflection point is 2.8. RH has no significant effect on the O 3 concentrations under low R CN (< 3), whereas it has a negative effect under high R CN (> 3). Compared with the experimental results, original MCM v3.3.1 greatly underestimates the O 3 concentrations. Addition of both the photolysis process of peroxyacetyl nitrate and the photolysis process of HNO 3 on the reactor surface into the original MCM can reduce the difference between the simulated O 3 concentrations and the experimental results at 6 h from 24%−35% and 17%−49% to 6%−26% and 10%−42% under low- and high-RH conditions, respectively. The maximum incremental reactivity (MIR) of acetaldehyde simulated with the modified MCM is 4.0 ppb ppb −1 without considering the effect of other VOCs.
研究领域:
大气科学
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环境科学
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产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Yue Liu,Dianlong Ge,Jijuan Zhou,Yajing Chu,Xiangxue Zheng,Li Ke,Pan Li,Yan Lu,Xue Zou,Lei Xia,Yawei Liu,Chaoqun Huang,Chengyin Shen,Yannan Chu
The investigation of volatile organic compounds (VOCs) in human metabolites has been a topic of interest as it holds the potential for the development of non-invasive technologies to screen for organ lesions in vivo. However, it remains unclear whether VOCs differ among healthy organs. Consequently, a study was conducted to analyze VOCs in ex vivo organ tissues obtained from 16 Wistar rats, comprising 12 different organs. The VOCs released from each organ tissue were detected by the headspace-solid phase microextraction-gas chromatography-mass spectrometry technique. In the untargeted analysis of 147 chromatographic peaks, the differential volatiles of rat organs were explored based on the Mann–Whitney U test and fold change (FC > 2.0) compared with other organs. It was found that there were differential VOCs in seven organs. A discussion on the possible metabolic pathways and related biomarkers of organ differential VOCs was conducted. Based on the orthogonal partial least squares discriminant analysis and receiver operating characteristic curve, we found that differential VOCs in the liver, cecum, spleen, and kidney can be used as the unique identification of the corresponding organ. In this study, differential VOCs of organs in rats were systematically reported for the first time. Profiles of VOCs produced by healthy organs can serve as a reference or baseline that may indicate the presence of disease or abnormalities in the organ’s function. Differential VOCs can be used as the fingerprint of organs, and future integration with metabolic research may contribute to the development of healthcare.
研究领域:
分析化学
·
代谢组学
·
医学诊断
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产品关联
DOI
PubMed
高影响因子
Small
·
2025
·
IF 12.1
Mianyi Xiang,Yamin Liu,Ziyang Yang,Jinlei Jiang,Weicheng Wang,Yao Hu,Daxiang Cui,Qichao Li
Electronic noses (e-noses) have become indispensable analytical platforms for gas detection. However, conventional e-nose systems face significant limitations in portable and wearable implementations due to their bulk and high-power consumption. Herein, a single-sensor-based multifunctional e-nose system is reported by integrating a micro-electromechanical system (MEMS) gas sensor with a flexible printed circuit board (FPCB). Specifically, the ZnO-ZnSnO 3 raspberry-like microspheres (ZZSRM) are utilized as the gas-sensitive materials, and the gas selectivity of the sensor is enhanced through a dual-temperature modulation strategy. Additionally, a gas classification model based on the MiniRocket algorithm has been developed, enabling efficient feature extraction and low-complexity classification of response signals, thereby satisfying the real-time processing demands of embedded devices. Moreover, a silent communication method is proposed, which maps breathing frequency to Morse code for information transmission in specific scenarios. Experimental results demonstrate that the wearable system achieves high-precision classification and concentration prediction for eight volatile organic compounds (VOCs), while simultaneously enabling robust recognition of exhaled signals and instantaneous conversion of Morse code into legible alphabetic characters. By combining the gas sensor with artificial intelligence (AI) technology, this work establishes a multifunctional flexible e-nose that merges portable gas detection and silent communication, offering a novel technological framework for environmental monitoring and human-machine interaction.
研究领域:
生物医学工程
·
微机电系统
·
气体检测
·
人工智能
·
可穿戴设备
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Jiashuai Zhao,Jiating Liu,Yutong Wang,Jin Du,Ziting Zhu,Yuhan Wang,Junyi Zhao,Mengying Long,Fusheng Pan,Zhongyi Jiang
Hybrid membranes hold significant potential in the efficient recovery of aromatic volatile organic compounds (VOCs). The advanced fillers with high aromatics affinity and polymer compatibility are in urgent demand. In this study, covalent organic framework nanosheets (COFNs) were introduced into poly (ether block amide) (Pebax®2533) to fabricate hybrid membranes. The long-range ordered pore structure, tunable functional groups and organic attributes of COFNs enhanced the affinity of membrane towards aromatic VOCs, the transport of VOCs within the membrane as well as the interactions between COFNs and Pebax. The hybrid membrane filled with TpPa-COOH COFNs exhibited a noticeable improvement in both selectivity and permeability compared to pure Pebax membranes. Particularly, when the content of TpPa-COOH COFNs was at 4 wt%, the membrane demonstrated excellent separation performance for a 2.7 mol% toluene/N 2 mixture, wherein the toluene permeability of membrane was 6.7 × 10 −7 mol μm m −2 s −1 Pa −1 and the selectivity was 674. This study expanded the application scenarios of COFs-based hybrid membranes and provided a new approach for the design and fabrication of VOCs recovery membranes.
研究领域:
材料科学
·
环境工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Wenxin Zhang,Min Xue,Jing Fan,Lili Qiu,Wenxiang Zheng,Yangyang Liu,Zihui Meng
As a widespread air pollutant, volatile organic compounds (VOCs) are harmful to the human body’s skin, nervous system, and respiratory system. Low-cost, extensive, and continuous detection of VOCs is of great significance to human health. We infiltrated and coated cellulose acetate on the inverse opal photonic crystal skeleton of methylcellulose–polyvinyl alcohol–graphene oxide to construct a degradable, high-toughness cellulose VOC sensor. Cellulose acetate enhances the response to VOCs and achieves a highly selective response to acetone vapor due to the smaller Flory–Huggins parameter with acetone. This work proposes a general, simple, easy-to-use, and highly selective photonic crystal VOC sensor development strategy. Calculated from the Flory–Huggins solution theory, a suitable polymer was selected to modify the inverse opal photonic crystal framework and achieve high selectivity detection.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）