TALANTA
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2026
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IF 6.1
Yaqiong Qin,Xiaoyu Wang,Lining Pan,Rana Tayyarah,Zhiguo Wang,Yu Liu,Ran Wan,Haijian Su,Xuejie Li,Li Chen,Huapeng Cui
The application of analyte protectants (APs) is recognized as an effective and practical strategy to enhance analyte signals in matrix-free solutions and compensate for matrix effects (MEs) in gas chromatography (GC) analysis. However, systematic investigations into promising APs for basic analytes and elucidation of the underlying molecular mechanisms remain limited. In this study, two classes of basic analytes with diverse polarity and basicity, including tobacco alkaloids (TAs) and primary aromatic amines (PAAs), were selected as target analytes. A total of 29 candidates covering a broad range of polarity, basicity, and volatility were systematically evaluated to identify the promising APs for TAs and PAAs. According to individual and average analyte peak enhancement factors, several polyamines, including diethylenetriamine, tris(2-aminoethyl)amine, spermine, pentaethylenehexamine, and the diamine 1,11-diaminoundecane, were identified as the potential APs. Corresponding combinations of these APs for TAs and PAAs at optimized concentrations were validated to significantly reduce the limits of quantification from 1.58–307.85 to 1.26–43.43 ng/mL in solvent and improve recovery rates from 92.3–352.1 to 80.3–111.5% in complex matrices. Consistent signal responses across diverse matrices further highlight the developed APs effectively overcome the MEs, ensuring the accurate and robust determinations in practical applications. Furthermore, density functional theory (DFT) calculations revealed that the superior enhancement effects of these APs are primarily attributed to lower interaction energies and stronger hydrogen-bonding interactions with silanol groups in the GC system.
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PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2022
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IF 9.794
Jinlong Li,Weiqi Zhang,Qiang Ma,Qian Xu,Olivia Barron,Khadijeh Hooshyari,Huaneng Su
Catalyst layer (CL) is the key factor of affecting the performance of proton exchange membrane fuel cells (PEMFCs). Herein, a facile and universal strategy is proposed to in situ grow Pt nanowires (Pt-NWs) on a dual microporous layer (MPL) as a novel CL for PEMFCs application . The dual MPL is composed of hydrophobic layer and hydrophilic layer, where the former facilitates mass transport and the latter favors the in-situ growth of Pt-NWs. During the whole preparation, only formic acid is used as reducing agent, no surfactants or templates are involved. The as-prepared Pt-NWs are uniformly grown on the surface of carbon particles to form a unique CL. The effect of dual MPL structure on PEMFCs performance is investigated, by which an optimal carbon powder content ratio (4:1) between hydrophobic layer and hydrophilic layer is determined. The single cell tests reveal that the Pt-specific power of the resultant MEA with 0.108 mg cm −2 Pt-NWs is up to 7.23 W mg −1 , about twice higher than that for commercial Pt/C MEA with 0.2 mg cm −2 Pt loading. Furthermore, the resulted GDE shows enhanced durability compared to commercial one, indicating the good potential of in-situ prepared Pt-NWs electrode for practical PEMFC applications.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 11.3
Dehua Wang,Qixi Duan,Hai Sun,Jiahao Li,Zhenyu Zhu,Zhaolong Fang,Yanxing Yang,Yong Yang
MXene-based materials have received increasing attention in gas sensing due to their excellent electrical conductivity and favorable surface properties. However, their practical applications are severely limited by low sensitivity, limited selectivity and poor stability. In this study, a robust sandwich-like 2D/0D/2D MXene@TiO 2 /ZnIn 2 S 4 ternary integrated heterojunction is designed and constructed. The architecture effectively promotes charge transfer across multiple heterointerfaces (metal/semiconductor interface, semiconductor/semiconductor interface), enabling highly sensitive and selective detection of volatile organic compounds, particularly triethylamine. The MXene@TiO 2 /ZnIn 2 S 4 ternary integrated heterojunction exhibits a high response value of ∼48 (R a /R g ) toward 100 ppm triethylamine at 300 °C, along with excellent selectivity, fast response/recovery, low limit of detection (697.2 ppb), remarkable humidity tolerance and long-term stability over 110 days. It is found the efficient multi-interface charge transport channel and enhanced gas adsorption/oxidation characteristics of the MXene@TiO 2 /ZnIn 2 S 4 ternary integrated heterojunction contribute to the excellent gas sensing performance. Moreover, the construction of sandwich-like 2D/0D/2D hierarchical open structure not only greatly promotes the diffusion of gas molecules, but also enhances the stability of pristine MXene. This work not only offers a novel strategy to enhance the performance of MXene-based gas sensing materials, but also provides significant insight into charge transport mechanisms at muti-interfaces in resistive-type gas sensors.
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高影响因子
ENERGY
·
2026
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IF 10.1
Zhiwen Wang,Yi Li,Linwen Wang,Chunhong Chen,Qing Zhou,Dongxia Yan,Junli Xu,Jiayu Xin,Xingmei Lu
A novel Polyethylene terephthalate (PET) steam pyrolysis method is developed by introducing high H/C ratio gas to produce terephthalic acid (TPA) monomer. CH 4 , C 2 H 6 , C 2 H 4 , C 3 H 8 , and C 3 H 6 were used as external hydrogen donors to upgrade the waste PET steam pyrolysis process, which were proven to be effective. Under optimized conditions (H 2 O flow rate of 0.1 mL/min, C 3 H 8 flow rate of 2 mL/min, heating rate of 0.5 °C/min, and final pyrolysis temperature of 450 °C), the H 2 O/C 3 H 8 /N 2 system achieved a product yield increase from 32.69% to 93.15% and a TPA purity improvement from 26.57% to 90.73%, with complete elimination of coke residues. Isotope tracing experiments using D 2 O confirmed the dual roles of H 2 O in hydroxyl substitution and hydrogen transfer, with C 3 H 8 compensating for hydrogen deficiency from H 2 O and enhancing the hydrogen transfer pathway. Through DFT calculations, the pathways and mechanisms of PET steam pyrolysis using C 3 H 8 as an external hydrogen donor were proposed, demonstrating that H 2 O and C 3 H 8 synergistically mediate the oriented pyrolysis of PET toward TPA by supplying ·OH and ·H radicals. This method offers a new idea for directional pyrolysis to prepare monomers, which is of great significance for achieving the recycling of waste plastics.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Beilong Lin,Ziyang Guo,Jianhan Li,Gaofei Xiao,Daiqi Ye,Yun Hu
It is a major challenge to achieve effective synergistic reduction of NO x and VOCs in coal-fired flue gas under complex working conditions. In this work, V-Cu bimetallic oxide catalysts with different supports were designed. V1-Cu5 bimetallic oxide supported on TiO 2 showed significantly higher activity for simultaneous toluene oxidation and NO x reduction than that supported on ZSM-5, SiO 2 and γ-Al 2 O 3 . Meanwhile, it exhibited excellent stability and anti-poisoning performance, and could block the formation of toxic polycyclic aromatic hydrocarbons in by-products. Compared with ZSM-5, SiO 2 and γ-Al 2 O 3 , TiO 2 as support was conducive to the formation of abundant acidic sites and oxygen vacancies. In addition, the strong interaction between the metal active sites and TiO 2 accelerated the electron transfer from Cu to adsorbed O 2 , thus promoting the formation of active O 2− . This work can provide guidance for the development of catalysts designed for the simultaneous catalytic removal of NO x and VOCs.
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高影响因子
POLYMER TESTING
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2022
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IF 4.931
Shanshan Jia,Songlin Deng,Yiqiang Wu,Yan Qing
Inspired by the biomaterial nacre, we report a versatile and facile strategy to rugged, flame retardant superhydrophobic materials by embedding a nacre-like montmorillonite (MMT) based gas barrier layer into hierarchical epoxy-resins. The well-aligned MMT layer imparted excellent oxygen and water barrier properties that rendered the coating surface water repellent yet protected the substrate materials from fire by suppressing heat and oxygen transfer. The hierarchical epoxy not only provided the robust superhydrophobic structure but offered strong adhesion to MMT layer. After application of this coating to a flammable sponge, it demonstrated superhydrophobicity with a contact angle of ∼153°. Furthermore, the material was rugged, resisting 1200 compression cycles and induced marked flame retardancy. The coated sponge delayed ignition (689% delay in ignition time) and promoted significant flame extinguishing property, compared with the uncoated material (demonstrated by LOI, CONE combustion, and fire scenario tests). Owing to its robustness and multifunctionality, the coated sponge was able to efficiently separate oil from multi-environments including strong corrosive, icy, boiling or vibrating mixtures. Additionally, the versatile application to wood, cotton, textile and other lignocellulosic substrates has been verified. This research opens up a new direction for durable waterproof and fireproof materials.
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2023
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IF 4.1
Wei Li,Jiangyan Huo,Entezar Berik,Wenyong Wu,Jinjun Hou,Huali Long,Min Lei,Zhaoxia Li,Zijia Zhang,Wanying Wu
Traditional Chinese medicine (TCM) is recognized as a complex matrix, and improved analytical methods are crucial to extract the key indicators and depict the interaction and alteration of the complex matrix. Shenqi Fuzheng Injection (SQ), a water extract of Radix Codonopsis and Radix Astragali , has demonstrated preventative effects on myotube atrophy induced by chemotherapeutic agents. To achieve the improved analytical capability of complex biological samples, we established a highly reproducible, sensitive, specific, and robust gas chromatography-tandem mass spectrometry (GC–MS) method to detect glycolysis and tricarboxylic acid (TCA) cycle intermediates with optimized factors in the extraction and derivatization process. Our method detected fifteen metabolites and covered most intermediate metabolites in glycolysis and TCA cycles, including glucose, glucose-6-phosphate, fructose-6-phosphate, dihydroxyacetone phosphate, 3-diphosphoglycerate, phosphoenolpyruvate, pyruvate, lactate, citrate, cis-aconitate, isocitrate, α-ketoglutarate, succinate, fumarate, and malate. Through methodological verification of the method, it was found that the linear correlation coefficients of each compound in the method were greater than 0.98, all of which had lower limits of quantification, the recovery rate was 84.94–104.45%, and the accuracy was 77.72–104.92%. The intraday precision was 3.72–15.37%, the interday precision was 5.00–18.02%, and the stability was 7.85–15.51%. Therefore, the method has good linearity, accuracy, precision, and stability. The method was further applied to study the attenuating effects of the SQ in a chemotherapeutic agents-induced C2C12 myotube atrophy model to evaluate the changes in the tricarboxylic acid cycle and glycolytic products under the action by the complex systems of TCM and disease model. Our study provided an improved method to explore TCM's pharmacodynamic constituents and action mechanisms.
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
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IF 8.4
Zi-ang Zhang,Li-fan Nie,Quan Zhou,Zhi-Dan Song,Ge-bo Pan
The structure and morphology of gas-sensitive materials were extremely important to performances of gas sensor. In this work, ZnO nano-crystalline (ZnO NCs) was synthesized on foam-like GaN (F-GaN) by sol-gel method as gas-sensitive materials of H 2 S gas sensor. When ZnO NCs/F-GaN composite structure was used as gas- sensitive materials for detection of H 2 S with the concentration of 50 ppm at 220 °C. Importantly, rapid response and recovery time was 78 and 31 s, respectively. Enhancement of the sensing response was mainly attributed to the combination between ZnO NCs and F-GaN. In addition, a multiphase catalytic mechanism was proposed to description the catalytic role of F-GaN in the gas sensing procedure. These results further broadened the application of as-prepared metal oxide semiconductor based GaN in the gas sensing field.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Qi Zhao,Haicheng Jiang,Changchun Wang,Shuai Zhao,Lina Wang,Guodong Kang,Xingming Jie,Yiming Cao
In this study, as an efficient technology membrane absorption was applied with newly developed polyetheretherketone (PEEK) hollow fiber membrane (HFM) to remove CO 2 from flue gas. To alleviate membrane wetting issue, 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FAS) was integrated into polydimethylsiloxane (PDMS) and then crosslinked FAS-PDMS was coated on porous PEEK membranes to prepare composite membranes. Surface characterization verified that PDMS layer containing fluoroalkylsilane had been successfully formed on membrane surface. As mass ratio of FAS to PDMS in coating solution raised, an interesting honeycomb-like structure was observed dispersing on composite membrane surface. Meanwhile, water contact angle was improved from 90.0° to 133.5° indicating enhanced membrane hydrophobicity. The effects of gas and liquid flow velocities on CO 2 absorption performance of FAS-PDMS/PEEK HFM were systematically studied. The highest CO 2 removal efficiency of 99.6% was achieved when gas and liquid velocity were 0.027 and 0.019 m s −1 . When gas velocity raised to 0.110 m s −1 , the maximum absorption flux of 1.22 × 10 -4 mol m −2 s −1 and overall mass-transfer coefficient of 2.69 × 10 −5 m s −1 could be obtained. Compared with the original membrane, the CO 2 absorption flux of FAS-PDMS-0.6 HFM was increased by 50.9%, and the performance had no degradation in 36 h test. This study provides a novel strategy to alleviate the membrane wetting problem during CO 2 membrane absorption process.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Xiang Li,Xueqian Wang,Li Yuan,Langlang Wang,Yixing Ma,You Wu,Yibing Xie,Rui Cao,Yiran Xiong,Ping Ning
The lengthy processes and cumbersome operations for the separate removal of COS and H 2 S have severely limited the development of blast furnace gas recycling process. CuO exhibits excellent H 2 S oxidation performance, but weak COS hydrolysis performance; in contrast, ZrO 2 shows the opposite trend. However, the functional combination of CuO and ZrO 2 has never been used for simultaneous removal of COS and H 2 S. In this study, a Cu/Zr co-doped K@TiO 2 bifunctional catalyst was tailored to simultaneously remove COS and H 2 S. The combined COS and H 2 S capacity of this catalyst reaches 340.5 mg/g at a low temperature of 60 °C, which is much higher than those of other reported bifunctional catalysts. The microcrystal structure formed by Cu/Zr co-doping increases the specific surface area of the catalyst and promotes the adsorption of COS/H 2 S. Specifically, Zr doping increases the content of moderate basic sites and significantly improves the hydrolysis efficiency of COS. Moreover, Cu doping induces lattice distortion of TiO 2 , while CuO captures 4 s valence electrons of K to form Cu 2 O. These two processes lead to the release of lattice oxygen from TiO 2 and CuO, generating oxygen vacancies and ·O 2 − , which promotes H 2 S oxidation. By proposing a simple route for the bifunctionalization of a desulfurization catalyst, this study drives innovation in both the theory and application of simultaneous removal of COS and H 2 S.
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高影响因子
FOOD CONTROL
·
2023
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IF 6
Qianqian Li,Bei Li,Chaoyang Zhang,Xiaoqian Zhou,Wei Liu,Yu Mi,Zuorong Xie,Yi Li,Jianxun Li
It is an urgent requirement to explore the key aroma of vine tea to provide the guidance for tea quality evaluation. In this study, three levels of vine tea of bud tip, tender leaf, and aged leaf were characterized by headspace-solid phase microextraction-gas chromatography-mass spectrometry (HS-SPME/GC-MS). The relative odor activity value (rOAV) calculation coupled with gas chromatography-olfactometry (GC-O) technology were implemented to seek the aroma-active compounds. Afterwards, the chemometrics methods were employed to explore the critical volatile compounds on the basis of S-line, variable importance for projection (VIP), jack-knifing confidence interval, p values (<0.05), and fold change (FC). As a result, five aroma compounds of ethyl acetate, (E,E)-2,4-heptadienal, geraniol, hexanal, and geranyl acetone were considered as key markers by taking an overall consideration of rOAV, GC-O and chemometrics methods. Finally, the mathematical equation of the vine tea grade with respect to the key aroma was established. The ethyl acetate and geraniol were positively related with the vine tea level evaluation, whereas the hexanal, geranyl acetone, and (E,E)-2,4-heptadienal were negatively correlated with the tea grade, among which the hexanal played a significant role on tea level assessment. This study provides compelling evidence for the vine tea quality evaluation in the perspective of key aroma compounds.
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高影响因子
ACS Applied Nano Materials
·
2022
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IF 6.14
Wenrou Yu,Xin Xie,Lei Wang,Quanwei Lv,Yuanyan Jiang,Wenjun Zhang,Chuan Huang,Li-ao Wang,Yingzhou Huang
As few odorous molecules in a gas mixture make a great contribution to its odor intensity, autograding in odor intensity is the key process and of great challenge in the prevention of odor pollution. In this work, the surface-enhanced Raman spectroscopy (SERS) spectra of a gas mixture from kitchen waste are detected on plasmonic MOF nanoparticle (NP) films for autograding in odor intensity. To obtain plasmonic MOF NP films with high SERS sensitivity, AgNP@ZIF-8 NPs with different shell thicknesses and adsorbing times are investigated, which is further confirmed by the simulation of electric field distribution and airflow distribution. Then, a 45 nm shell thickness and 3H adsorbing time are selected to collect the SERS spectra of the gas mixture from kitchen waste with different odor intensities. These SERS spectra point out that the odorous molecules generated from the different statuses of kitchen waste dominate the odor intensity of the gas mixture. Furthermore, autograding in odor intensities with four levels based on deep learning (DL) is achieved here. The results exhibit excellent diagnostic accuracy (93.3%) for the external held-out overall dataset, which indicates that a high-throughput, rapid, and label-free tool for screening odor intensities could be developed. Our work not only enriches the research of gas detection by SERS spectra but also improves the prevention technique of odor pollution.
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高影响因子
危险品化学品经营许可证（带存储）