FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Zhanpeng Liu,Hongxin Jiang,Renyong Zhao,Xinwei Wang,Bin Zhang,Qiang Huang,Hao Li,Paul Van der Meeren
In this study, a novel alginate-cyclodextrin hybrid bubble hydrogel was developed for the stable encapsulation of ethylene gas. Ethylene gas was introduced into aqueous bubble systems prepared using sodium alginate (SA), α-cyclodextrin (α-CD), SA + α-CD, β-cyclodextrin (β-CD), or SA + β-CD. Among these, the α-CD bubble system demonstrated the highest ethylene-loading ability (0.88 mL/g carrier ). However, over 50 % of the encapsulated ethylene was released from all bubble systems within 60 h due to cavity disintegration, demonstrating that these bubble systems were unstable for gas storage. Therefore, to enhance gas storage stability, the bubble systems were converted into bubble hydrogels. The gas contents of SA, SA + α-CD, and SA + β-CD bubble hydrogels significantly decreased to 0.31, 0.23 and 0.18 mL/g carrier , respectively. This phenomenon could be attributed to bubble rupture and coalescence induced by mechanical stress during gelation. Regarding storage stability, 70–80 % ethylene was retained in the bubble hydrogel systems at room temperature after 28 days storage, indicating that the hydrogel structure significantly improved gas-storage stability. This can be ascribed to the hydrogel film coating and the water layer around the surface of cavities. Therefore, the bubble hydrogel represents a promising encapsulation matrix for fruit ripening applications.
研究领域:
食品科学
·
材料科学
·
高分子科学
·
农业技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Xin Li,Yunzhuo Zhang,Yue Cheng,Xujun Chen,Wenhu Tan
Metal-organic framework (MOF)-derived ZnCo 2 O 4 was synthesized by utilizing the template agent 2-methylimidazole, zinc and cobalt nitrate by an easy solvothermal process followed by annealing for the first time. The porous hierarchical ZnCo 2 O 4 microstructure possesses a microflower structure assembled by 3D nanosheets . The obtained flower-like structure has abundant open spaces between nanosheets , which allows for facile gas diffusion while providing plentiful active sites for gas adsorption . The hierarchical ZnCo 2 O 4 microflower-based sensor exhibits a high response of 32.32 and fast response/recovery rates (2.6/8.8 s) at 200 °C to 100 ppm acetone gas. In addition, the porous hierarchical ZnCo 2 O 4 microflower-based sensor has a detection limit below 50 ppb with a response of 2.51 to acetone gas. The excellent sensing performance of this porous hierarchical structure-based sensor is ascribed to the good gas accessibility of the microflower morphology with a high specific surface area, small particle size and highly porous structure . This work explores an efficient way to synthesize MOF-derived bimetallic oxides with microflower structures assembled by 3D nanosheets for gas sensing applications.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
Sensor Review
·
2025
·
IF 1.4
Zhaopeng Li,Pei Li,Peisi Yin,Xin Zhao,Yangting Hu,Fei Sun,Xia Sun,Zhenhe Wang
Purpose This paper aims to develop a highly sensitive resistive gas sensor for accurately detecting ethyl formate to achieve reliable and real-time monitoring of fish meal spoilage. Design/methodology/approach Based on the one-step solvothermal reduction method, in a specific triethylene glycol solution environment and high temperature, the 3D ZnO sensing material with a jackfruit-like structure was prepared for detecting ethyl formate gas in fish meal. Findings The gas sensor based on 3D ZnO displays high sensor response (69.68–100 ppm) at 280°C and 43% RH and good sensor response (12.18–100 ppm) at 280°C and 80% RH, ultra-low detection limit of 10 ppb at 43% RH, excellent selectivity, repeatability and long-term stability. The sensing mechanism is due to the gain or loss of electrons caused by the sensor surface reaction. The unique jackfruit-like structure, abundant oxygen vacancies and large surface area may be another factor contributing to its excellent ethyl formate gas sensing performance. Originality/value The authors first developed an ethyl formate gas sensor, and the results were compared with the previously published data. The analysis showed the ZnO gas sensor demonstrated excellent sensing performance. This work highlights the potential of high response ethyl formate gas sensors to accurately evaluate fish meal quality.
研究领域:
材料科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Bingbing Yang,Lu Bai,Shaojuan Zeng,Shuangjiang Luo,Lei Liu,Jiuli Han,Yi Nie,Xiangping Zhang,Suojiang Zhang
As ecological pollution and resource waste caused by NH 3 emission become increasingly serious, thus the separation and recovery of NH 3 from exhausted gases is of great significance both for environment and economy. Herein, we present a kind of novel ionic liquids (ILs)-based hybrid membranes for efficient NH 3 separation. Protic ILs (PILs) are adopted to form self-assembled gas highways in the hybrid membranes with the nanostructures of a middle-sulfonated pentablock copolymer, exhibiting extremely high NH 3 affinity and gas diffusion. The highest NH 3 permeability and ideal NH 3 /N 2 selectivity is up to 2711 Barrer and 1407 at ambient temperature and 1 bar, much superior to the state-of-the-art membranes reported. The results indicated that the novel IL-based hybrid membranes are promising candidates for high-efficient NH 3 separation and purification.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
MARINE AND PETROLEUM GEOLOGY
·
2019
·
IF 3.538
Peng Liu,Xiaofeng Wang,Ying Lin,Changjie Liu,Xiaofu Li,Wenhui Liu
Adsorption and desorption processes of shale gas possess particular characteristics compared to conventional natural gas. Previous studies conducted desorption experiments on fresh core samples to investigate the isotope and chemical fractionations during the desorption process. However, complete chemical and isotope fractionations cannot be obtained due to the loss of gases during the coring process. In this study, we utilized a modified experimental apparatus based on the fixed adsorption bed to conduct systematic desorption experiments in confined systems with different proportions of free and adsorbed gases. The results show that different adsorption capacities and non-synchronous desorption for alkane gas components are leading factors influencing chemical fractionation during the desorption process. Meanwhile, C 1 /C 2 and C 1 /(C 1 +C 2 ) vary with different proportions of adsorbed gases in the same adsorption matrix. Generally, isotope fractionation between the adsorbed and free phases during desorption follows the Rayleigh fractionation model. The linear correlations between proportions of adsorbed CH 4 and isotope fractionation factors can be applied to predict the proportions of adsorbed gases. Calculations show that on average 55% of hydrocarbon gases exist at adsorbed state in shale gas from Yanchang Formation of Ordos Basin.
研究领域:
地质学
·
地球化学
✓ 已验证
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2019
·
IF 1.584
Yayun Zheng,Xing Yang,Meng Yuan,Jujie Luo
Two novel gas separation membranes (Phenyl(Ph)-poly(ether ether ketone)s (PEEKs) and PEEKs) based on PEEKs with a high fractional free volume were designed and synthesized. The structure and thermodynamic stability of the membranes were investigated using Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, and thermogravimetric analysis. The two membranes, which were determined to be high-molecular weight polymers by gel permeation chromatography, showed good solubility in a weakly polar solvent. The gas transport properties of the Ph-PEEK membranes were investigated for different gases (CO2, O2, CH4, and N2) at 25°C and 1 atm. The Ph-PEEK-3 membrane with the largest free volume had the largest gas permeability coefficient and maintained good selectivity. The effect of operating temperature on the gas permeation of the Ph-PEEK-3 membrane was also investigated, and the maximum permeability of the four single gases was reached at 55°C and 1 atm.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 7
·2101908
·
IF 6.389
Meng Miao,Zhipeng Wang,Zhiming Guo,Jinfeng Xing
A quasi solid–liquid reaction strategy is proposed that is based on the instantaneous transformation of structured solid ligand aggregation into insoluble Cu 3 (HITP) 2 metal–organic framework (MOF) aggregation without morphologic change (HITP = 2,3,6,7,10,11-hexaiminotriphenylene). The initial 3D ordered submicron macropores (TOM) in ligand aggregation can be maintained during the transformation due to the extremely rapid rate of coordination reaction. In this case, the in situ synthesis of the Cu 3 (HITP) 2 MOF film with large-scale TOM structure (TOM-Cu 3 (HITP) 2 film) on ceramic-based gold interdigital electrode (IDE) is achieved. Scanning electron microscope is used to confirm the morphology in each stage of synthetic process. Spectroscopic characterizations prove that there is no essential difference between TOM-Cu 3 (HITP) 2 film and ordinary Cu 3 (HITP) 2 MOF, except for slight differences in the contents of individual surface functional group and integral crystallinities, respectively. Notably, TOM structure endows the TOM-Cu 3 (HITP) 2 film with a dramatic promotion in sensitivity to H 2 S gas. The resistive response of the IDE loaded with TOM-Cu 3 (HITP) 2 film to the 80 ppm H 2 S gas reaches 78.5 at room temperature, which is 6.7× more than that of the Cu 3 (HITP) 2 film without TOM structure. The method of obvious universality allows the authors to perform in situ synthesis directly on the desired substrate without transfer process.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2020
·
IF 6.155
Xiao You,Jinshan Yang,Mengmeng Wang,Hongda Wang,Le Gao,Shaoming Dong
In this work, the interconnected graphene scaffolds are prepared by three-dimensional (3D) printing for multifunctional gas detection with tunable sensitivity. The scaffolds with regularly aligned graphene conductive networks exhibit significant mechanical strength and high electrical stability to multi-direction deformation, which can be attributed to the typical core-shell structure of graphene and PVP. The resistance of the free-standing scaffolds can realize the real-time response to H 2 O and NO 2 , and the relative resistance change to 100 ppm H 2 O and 100 ppm NO 2 can reach 2% and 2.5 %, respectively. The charge doping of the oxidizing gases is considered to be the main reason for various response sensitivities of the scaffolds with different orthogonal layers, in which the interconnected conductive network can generate a large specific surface area and significantly improving the adsorption of the target gases and the transfer of charge. The controllable fabrication of regular structure has appropriately great potential for further optimizations and applications in gas detection.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Tianyang Mo,Wenhui Ma,Xianwu Xu,Ran Xiong,Hongbo Wang,Yidong Hou,Bingjun Yu,Linmao Qian,Zhi-Jun Zhao
Accurate detection and identification of hazardous gases in complex environments are essential for ensuring human health and safety in modern industrial systems. Although sensing technologies are rapidly advancing toward miniaturization, low power consumption, and multifunctionality, the scalable and reliable integration of complex nanostructures with functional materials remains a significant challenge. Here, we present a scalable and material-compatible strategy for fabricating suspended half-pipe nanostructures on the nanoimprinted substrates via integrating vapor-phase solvent-assisted nanotransfer printing with nanoimprint lithography. The resulting hierarchical architecture facilitates efficient gas–surface interactions and improves sensing performance under variable environmental conditions. We further demonstrate a self-heating gas sensing platform based on half-pipe nanostructures functionalized with SnO 2 and noble metals (Au, Pd, Pt), enabling accurate classification of H 2 , CH 4 , H 2 S, and NH 3 . With the assistance of machine learning algorithms, the platform achieves a recognition accuracy approaching 100 %. Furthermore, an integrated Pt nano heater delivers efficient thermal regulation within the range of 100–500℃, establishing optimal operating conditions for gas-sensitive materials while significantly reducing overall power consumption. This work offers a universal and scalable fabrication approach for advanced gas sensors, paving the way for intelligent, energy-efficient, and high-selectivity sensing platforms suitable for next-generation industrial and environmental monitoring.
研究领域:
纳米技术
·
气体传感
·
材料科学
·
微纳加工
·
环境监测
·
机器学习应用
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-8
·
IF 16.6
Xiao Peng,Li Juan-Juan,Chen Wan,Pang Wei-Xin,Peng Xiao-Wan,Xie Yan,Wang Xiao-Hui,Deng Chun,Sun Chang-Yu,Liu Bei,Zhu Yu-Jie,Peng Yun-Lei,Linga Praveen,Chen Guang-Jin
Gas hydrates provide alternative solutions for gas storage & transportation and gas separation. However, slow formation rate of clathrate hydrate has hindered their commercial development. Here we report a form of porous ice containing an unfrozen solution layer of sodium dodecyl sulfate, here named active ice, which can significantly accelerate gas hydrate formation while generating little heat. It can be readily produced via forming gas hydrates with water containing very low dosage (0.06 wt% or 600 ppm) of surfactant like sodium dodecyl sulfate and dissociating it below the ice point, or by simply mixing ice powder or natural snow with the surfactant. We prove that the active ice can rapidly store gas with high storage capacity up to 185 V g V w −1 with heat release of ~18 kJ mol −1 CH 4 and the active ice can be easily regenerated by depressurization below the ice point. The active ice undergoes cyclic ice−hydrate−ice phase changes during gas uptake/release, thus removing most critical drawbacks of hydrate-based technologies. Our work provides a green and economic approach to gas storage and gas separation and paves the way to industrial application of hydrate-based technologies.
研究领域:
化学工程
·
材料科学
·
能源储存
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Gas Science and Engineering
·
2023
·
IF 0
Xian Sun,Xiao-Hui Wang,Peng Xiao,Yi-Fei Sun,Xing-Xun Li,Wei-Xin Pang,Qing-Ping Li,Chang-Yu Sun,Guang-Jin Chen
Hydrate reservoirs with underlying gas show significant potential for commercial exploitation. An experimental apparatus capable of applying confining pressure and axial pressure was built to simulate the accumulation and dissociation of naturally occurring marine hydrate and a novel method for synthesizing hydrate reservoirs with underlying gas was proposed. With the formed methane hydrate-bearing coarse sediment (HBCS) with underlying gas, hydrate dissociation experiments via depressurization under constrained conditions were carried out at different HBCS proportions. The characteristics of heat transfer and dual-gas co-production during the exploitation of hydrate reservoir at various HBCS proportions were presented. Due to the influence of hydrate decomposition, the diverging temperature variations of the underlying layer and upper HBCS layer were observed at HBCS proportions of 0.21, 0.48, and 0.77. The negative effect of the outside pressure on gas production was not observed in our experimental conditions owing to the adopted coarse quartz sand deposits. The final produced gas volume increases with the HBCS proportion increasing. The produced gas percentage is negative or positive related to the HBCS proportions respectively with the extended production time. In addition, the different production behavior of the underlying gas and hydrate decomposed gas may induce the unexpected exploitation accidents such as blowouts resulting from unstable gas production rate. These findings guide the design of exploitation scheme for reservoirs with different HBCS distribution. And an exploitation method by setting the production well in the underlying gas layer/underlying sediment layer with free gas is then proposed, which can inhibit hydrate reformation and ice generation and improve the production well stability during the hydrate exploitation process.
研究领域:
海洋地质学
·
能源工程
✓ 已验证
DOI
SEPARATION SCIENCE AND TECHNOLOGY
·
2019
·
IF 1.354
Airong Li,Dan Luo,Lele Jiang,Jie Wang,Yi Zhou
A series of experiments on CO2 hydrate formation were carried out in the presence of titanium dioxide (TiO2), silicon dioxide (SiO2), multi-walled carbon nanotubes (MWNTs) nanoparticles. The effects of these nanoparticles on induction time, final gas consumption, and gas storage capacity have been investigated at the temperature of 274.15 K and the initial pressure of 5.0 MPa.g. The induction time of CO2 hydrate formation was remarkably shortened to 12.5 min in the presence of 0.005 wt% MWNTs nanoparticles. The high thermal conductivity and heat capacity of MWNTs nanoparticles presented better heat transfer, and large surface area provided more suitable sites for heterogeneous nucleation of CO2 hydrate.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）