Journal of Materials Chemistry C
·
2025
·
IF 5.1
yuyang He,Haoxiang Wang,Ruoyu Wang,Mengqi Lu,Dongpo Xu
Triethylamine (TEA), as an important chemical raw material, is widely used in pharmaceuticals, dyes, rubber, and other industries. However, its high volatility, strong irritancy, and flammable/explosive properties pose serious threats to production safety and human health. Therefore, the development of highly sensitive and stable TEA gas sensors holds significant practical importance. In this study, Au-doped tin dioxide (SnO₂) nanotube materials with varying doping concentrations were successfully prepared via a one-step electrospinning method combined with a calcination process.Gas-sensing performance tests demonstrated that the Au-composited SnO₂ nanotube sensor exhibited excellent response characteristics to 50 ppm TEA at a relatively low operating temperature (144°C), achieving a high response value (Ra/Rg) of 215.74. The incorporation of Au enabled the material to attain a narrower band gap (Eg) compared to pure SnO₂, thereby enhancing electron transfer capability. Moreover, the sensor displayed rapid response/recovery times (6s/91s), as well as good reproducibility and long-term stability. This facile preparation method and outstanding sensing performance suggest that Au-SnO₂ nanotube composites hold promising potential for practical TEA detection applications.
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INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Linfeng Liang,Jianan Cui,Xinrong Han,Yinkang Ding,Jing Yang,Sanhu Zhao,Huan Li
Previously, we reported a 1,3,5-triazine-based metal–organic framework (MOF) constructed via the in situ hydrolysis of melamine. However, the use of template molecules within the pores posed significant challenges for material activation and resulted in pronounced fluorescence quenching. In this work, we introduce a more sustainable and template-free synthetic strategy by directly employing ammeline as the organic ligand to construct a triazine-based MOF, SXU-120(ammeline). This approach simplifies the activation process, enhances solid-state fluorescence, and improves stability. The resulting MOF demonstrates high sensitivity and selectivity for aqueous Cr2O72– ions, achieving a Stern–Volmer quenching constant (KSV) of 5.13 × 104 M–1. Furthermore, a scalable reflux-based synthesis route was developed, reinforcing the material’s potential for practical and eco-friendly environmental sensing applications.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ruitian Yan,Wenjie Zhao,Xiaoyang Duan,Taolin Yu,Weiping Cui,Weidong Quan,Yinsheng Chen,Dan Xu
Recently, MoSe 2 has exhibited limited development in the field of gas sensors owing to its low sensitivity and slow response/recovery. Herein, various noble metals (Pt, Pd, and Ag) were employed to dope the MoSe 2 nanoflower for enhancing its sensing capability to NO 2 . Compared to Ag and Pd modification, the Pt doped-MoSe 2 sensor displayed higher sensitivity, faster response rate, and better selectivity. Moreover, the 2.5 %Pt-MoSe 2 sensor had a large sensitivity of 2.45 to 32 ppm NO 2 , good repeatability, and a low detection limit of 0.1 ppm at 110 °C. The improvement in the gas-sensing response can be attributed to the spillover effect and catalytic sensitization of Pt. Moreover, the first principle calculations for the adsorption energy and density of states have confirmed that the MoSe 2 material can adsorb NO 2 more effectively by Pt doping. The Pt-decorated MoSe 2 material exhibits a promising prospect in the field of NO 2 gas detection.
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ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 28
·2113374
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IF 19.924
Shuang Ben,Yuzhen Ning,Zhihong Zhao,Qiang Li,Xudong Zhang,Lei Jiang,Kesong Liu
The manipulation of underwater bubbles is of great significance in scientific research and industrial applications since they are ubiquitous and inevitable in production and life, for example, in agriculture and industry processes. Unfortunately, in an aqueous environment, the bubbles are mainly dominated by buoyancy and move upward, which makes the manipulation of bubbles difficult. To this end, numerous materials have been designed to manipulate bubbles. However, almost all of the existing materials are based on the superaerophilic surface, which has low controllability of bubble and cannot switch the transport velocity. Therefore, realizing the efficient, non-destructive, and reversible manipulation of bubbles remains a great challenge. Herein, a novel strategy combining the superaerophobic wettability with magnetic response microcilia structure surface to achieve efficient, lossless, and reversible manipulation of bubbles is proposed. The surface can not only realize the non-destructive manipulation of bubbles with different volumes, but also adjust the bubble transport velocity by adjusting the magnetic field. This study provides a reference for the application of bubbles in more fields and provides a basis for the development and research of expanding the application of microfluidic technology in the future.
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Energy & Environmental Materials
·
2024
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IF 13
Shasha Gao,Yongchao Cheng,Lu Chen,Sheng Huang
In this study, a framework for predicting the gas-sensitive properties of gas-sensitive materials by combining machine learning and density functional theory (DFT) has been proposed. The framework rapidly predicts the gas response of materials by establishing relationships between multisource physical parameters and gas-sensitive properties. In order to prove its effectiveness, the perovskite Cs 3 Cu 2 I 5 has been selected as the representative material. The physical parameters before and after the adsorption of various gases have been calculated using DFT, and then a machine learning model has been trained based on these parameters. Previous studies have shown that a single physical parameter alone is not enough to accurately predict the gas sensitivity of materials. Therefore, a variety of physical parameters have been selected for machine learning, and the final machine learning model achieved 92% accuracy in predicting gas sensitivity. It is important to note that although there have been no previous reports on the response of Cs 3 Cu 2 I 5 to hydrogen sulfide, the resulting model predicts the gas response of H 2 S; it is subsequently confirmed experimentally. This method not only enhances the understanding of the gas sensing mechanism, but also has a universal nature, making it suitable for the development of various new gas-sensitive materials.
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SENSORS
·
2024
·Vol. 24
·期 6
·1824
·
IF 3.4
Yuan Qu,Haotian Zheng,Yuhua Lei,Ziwen Ding,Siqi Li,Song Liu,Wei Ji
Morphology and structure play a crucial role in influencing the performance of gas sensors. Hollow structures, in particular, not only increase the specific surface area of the material but also enhance the collision frequency of gases within the shell, and have been studied in depth in the field of gas sensing. Taking SnO2as an illustrative example, a dual-shell structure SnO2(D-SnO2) was prepared. D-SnO2@Polyaniline (PANI) (DSPx, x represents D-SnO2molar content) composites were synthesized via the in situ oxidative polymerization method, and simultaneously deposited onto a polyethylene terephthalate (PET) substrate to fabricate an electrode-free, flexible sensor. The impact of the SnO2content on the sensing performance of the DSPx-based sensor for NH3detection at room temperature was discussed. The results showed that the response of a 20 mol% D-SnO2@PANI (DSP20) sensor to 100 ppm NH3at room temperature is 37.92, which is 5.1 times higher than that of a pristine PANI sensor. Moreover, the DSP20 sensor demonstrated a rapid response and recovery rate at the concentration of 10 ppm NH3, with response and recovery times of 182 s and 86 s.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Ziyu Gan,Jun Wang
Plants exhibit rapid responses to biotic and abiotic stresses by releasing a range of volatile organic compounds (VOCs). Monitoring changes in these VOCs holds the potential for the early detection of plant diseases. This study proposes a method for identifying late blight in potatoes based on the detection of (E) -2-hexenal, one of the major VOC markers released during plant infection by Phytophthora infestans . By combining the Michael addition reaction with cysteine-mediated etching of aggregation-induced emission gold nanoclusters (Au NCs), we have developed a portable hydrogel kit for on-site detection of (E) -2-hexenal. The Michael addition reaction between (E) -2-hexenal and cysteine effectively alleviates the etching of cysteine-mediated Au NCs, leading to a distinct fluorescence color change in the Au NCs, enabling a detection limit of 0.61 ppm. Utilizing the superior loading and diffusion characteristics of the three-dimensional structure of agarose hydrogel, our sensor demonstrated exceptional performance in terms of sensitivity, selectivity, reaction time, and ease of use. Moreover, quantitative measurement of (E) -2-hexenal was made easier by using ImageJ software to transform fluorescent images from the hydrogel kit into digital data. Such method was effectively used for the early detection of potato late blight. This study presents a low-cost, portable fluorescent analytical tool, offering a new avenue for on-site detection of plant diseases.
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PHYSICA SCRIPTA
·
2025
·Vol. 100
·期 6
·065603
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IF 2.6
Yashuai Zhang,Honghua Liao,Congkui Tian,Xu Yang,Jingwen Cui,Zhuo Liu
A double quartz dielectric barrier discharge with water falling film (WF-D-DBD) reactor is designed to reduce electrode galvanic corrosion for longer life. In order to investigate the influence of high-voltage electrode configuration on the synthesis rate and energy consumption of plasma gas–liquid nitrogen fixation, four different external high-voltage electrodes, namely, mesh electrode, sheet electrode, multi-electrode, and copper wire electrode, were studied and dependence of the electrical parameters (e.g., volt-ampere characteristic, dielectric equivalent capacitance, and power factor), the emission spectra on the electrode configuration was obtained. The results show a nitrogen fixation reactor with a mesh-electrode structure can achieve a faster synthesis rate and higher energy efficiency, while the one with the multi-electrode structure can reduce the discharge current and ensure safe operation and long-time running. The selectivity of nitrogen fixation to nitrate was 100% in all four reactors. It is concluded that the production of OH carboxyl groups from water decomposition plays an important role in the reaction, and the presence of hydrogen peroxide and ozone improves the selectivity. The reticulated reactor exhibited the most favorable performance, with synthesis rate of 160.9 μmol min−1 and energy consumption of 43.2 MJ mol−1. This result is expected to fulfil the need for green, distributed and sustainable nitrogen fixation.
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Processes
·
2024
·Vol. 12
·期 11
·2315
·
IF 2.8
Yang Ge,Haihong Chen,Rui Qin,Haiyuan Yao,Ting Huang,Xin Lv,Huiyong Liang,Shi Shen
During marine oil–gas extraction, significant amounts of carbon dioxide (CO2) gas are often produced. Effectively separating these associated CO2gases during extraction has become a critical technical challenge. Therefore, this paper aims to enhance the efficiency of CO2hydrate-based capture technology and conduct relevant research. The goal is to increase the driving force for hydrate formation by combining the traditional thermodynamic additive TBAB with pressure modulation and to improve the hydrate formation rate through the use of multiple kinetic promoters. This paper presents the initial investigation into the effect of the thermodynamic accelerator tetrabutylammonium bromide (TBAB) on the characteristics of CO2hydrate formation. The promotion effects of TBAB solutions with varying mass concentrations (3%, 5%, 7.5%, 10%) and reaction pressures (3 MPa, 4 MPa) were subjected to a systematic analysis, and the optimal conditions were identified as 4 MPa and a 5 wt% TBAB concentration. Subsequently, the impact of combining TBAB with kinetic promoters (SDS, nano Al2O3, L-methionine, L-leucine) on CO2hydrate generation characteristics was further investigated. In this paper, the effect of a single promoter on the generation characteristics of CO2hydrate was investigated, and the efficient carbon trapping ability of the complex promoter was verified, which provides theoretical support for the application of CO2trapping technology using the hydrate method.
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JOURNAL OF CONTROLLED RELEASE
·
2025
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IF 11.5
Yangyan Chen,Tao Ren,Wentao Wu,Beibei Yang,Anqi Lu,Ke Pan,Jing Xu,Chao Lu,Guilan Quan,Chuanbin Wu,Xin Pan,Tingting Peng
Existing treatments for androgenetic alopecia (AGA) are unsatisfactory, owing to the two major reasons: (1) Oxidative stress and vascularization deficiency in the perifollicular microenvironment provoke the premature senescence of hair follicles, limiting the transformation of hair growth cycle from the telogen to the anagen phase; (2) The amount of drug delivered to the perifollicular region located in the deep dermis is very limited for passive drug delivery systems. Herein, we developed a gas-propelled microneedle patch integrated with ferrum-chelated puerarin/quercetin nanoparticles (PQFN) to increase drug accumulation in hair follicles and reshape the perifollicular microenvironment for improved hair-regenerating effects. PQFN can rejuvenate testosterone (Tes)-induced senescence of dermal papilla cells by scavenging ROS, restoring mitochondrial function, regulating signaling pathways related to hair regeneration, and upregulating hair growth-promoting genes. PQFN more efficiently promoted endothelial cell proliferation, migration, and tube formation than ferrum-chelated quercetin nanoparticles (QFN) because of puerarin's proangiogenic effects. Compared with passive MNs, gas-propelled MNs promoted drug diffusion and permeation into deeper skin layers, resulting in significantly higher drug accumulation in hair follicles. Pharmacodynamic studies on an AGA mouse model further showed that PQFN-loaded active MNs achieved higher hair coverage by alleviating oxidative stress, promoting angiogenesis, and rejuvenating senescent cells. Therefore, this study presents a novel “anti-hair follicle aging” treatment strategy for AGA.
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IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Ziheng Zhi,Fangrong Hu,An Su,Mingzhu Jiang,Wenying Jiang,Longhui Zhang,Zhongpeng Gao,Weiyu Luo,Chengju Meng
P-Xylene is a prevalent indoor hazardous volatile organic compound(VOC). A long-term exposure limit of 100 ppm for p-xylene is generally recommended. Therefore, sensitive and selective detection of trace p-xylene is crucial. This work presents a method for detecting p-xylene gas by combining terahertz (THz) metasurface sensor with a metal-organic-framework (MOF) material, copper benzene-1,3,5-tricarboxylate (HKUST-1). The sensor with double split ring resonators is fabricated using a micromachining process and characterized by a terahertz time-domain-spectroscopy (TDS) system. The test results are consistent with the simulation. Subsequently, the sensor's surface is modified using the MOF material of HKUST-1 to enhance its sensitivity to the p-xylene gas. At room temperature, the sensitivity for p-xylene gas concentrations is between 1-100 ppm .The modified sensor has a maximum response frequency shift of 14 GHz for p-xylene gas at 100 ppm. Furthermore, the specificity, repeatability and stability of the sensor are characterized. The proposed method for highly sensitive and specific detection of p-xylene gas has important reference significance for the development of other types of gas sensors.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Yizheng Tao,Lei Wang,Benxing Li,Jin Huang,Yichang Pan
Interfacial compatibility is a critical prerequisite for maximizing the gas separation pot entail of metal-organic framework (MOF)-based mixed-matrix membranes (MMMs). In this study, an innovative strategy that employs polymers of intrinsic microporosity (PIMs) covalently grafted onto MOF surfaces has been introduced to engineer compatible interfaces through graded interfacial bonding. Through the reaction between PIM-COCl functionalized polymers and ZIF-NH 2 nanoparticles at ambient temperature, amide-bonded PZIF-CONH nanohybrids have been synthesized, which exhibited superior dispersibility in both solvent media and polymer matrices. Notably, the PZIF-CONH nanohybrids retained their intrinsic high porosity without encountering the pore-blocking issues commonly associated with conventional surface modifiers, owing to the microporous nature of PIM materials. The PIM-based surface modification establishes strong interfacial interactions between ZIF-particles and the polyimide matrix, leading to the fabrication of defect-free MMMs. These gas separation membranes have demonstrated significantly enhanced CO 2 permeability and CO 2 /CH 4 selectivity, exceeding the 2008 upper bound. The gas-permeable polymeric modification approach can offer a promising solution for enhancing the stability and separation performance of MMMs.
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