Small
·
2025
·
IF 12.1
Qian Liu,Xinxi Huang,Yihao Xiao,Yongyan Feng,Wanbin Li
Metal-organic framework (MOF) membranes with sub-nanometer pore systems hold great potential for efficient gas separations. However, the rational designing and scalable manufacturing of MOF membranes face critical challenges, including stringent synthesis conditions, prolonged processing times, excessive reagent consumption, limited scalability, poor reproducibility, uncontrollable thickness, and mechanical fragility. In this study, we report a bioinspired channel-end-sealing assembly strategy for facile, rapid, and scalable production of flexible, ultrathin (≈20 nm), large-area (>1000 cm 2 ) co-continuous MOF membranes. Inspired by capping the unit cells of honeycombs, we present sealing the channel ends of polymer substrates to form defect-free membranes, through establishing controllable and self-terminating crystallization at the nanoconfined interfaces between biphasic precursor systems via stoichiometric modulation. This strategy enables reproducible manufacturing of MOF membranes within 5 min at room temperature with low precursor consumption of 1.0 mL cm −2 . Moreover, the resulting MOF membranes exhibit ultrafast and stable sieving properties with H 2 permeance as high as 13900 gas permeation units and H 2 /CO 2 selectivity up to 40.6 at 150 °C, outperforming state-of-the-art membranes. Crucially, the membranes can maintain their performance after bending with a curvature of 200 m −1 . These findings pave the way for industrial-scale production and application of MOF membranes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Bingchen Zhu,Weihao Fang,Jia Yan,Yue Kang,Yi Tian,Kunmei Yang,Jiazhen Zhang,Yingping Zhang,Hui Xu,Zhilong Song
The detection of hydrogen sulfide (H2S) in humid environments remains a significant challenge, particularly in wearable gas sensors where humidity, mechanical flexibility, and power consumption are critical constraints. In this study, we introduce a stretchable, humidity-resistant H2S sensor based on microcrumpled SnO2 quantum-wire films, designed for efficient gas detection at room temperature with low-power consumption. The sensor’s architecture enhances gas adsorption by increasing the active surface area while minimizing water accumulation through surface energy modulation. This innovative microwrinkle topology results in rapid (<60 s) detection of H2S with high sensitivity (0.01 to 5 ppm) and excellent selectivity (5.6 times higher than individual interfering gas), even under 80% relative humidity, outperforming current state-of-the-art room temperature sensors. The device exhibits long-term stability with minimal response fluctuations (2.08% relative standard deviation) over 30 days of continuous testing. Furthermore, integrated into a flexible platform, it enables real-time, wireless H2S monitoring during dynamic human motions, as demonstrated in simulated industrial environments. This work provides a robust solution to the environmental challenges that hinder the development of reliable wearable gas sensors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Sheng-Li Han,Hui-Qin Zhang,Feng Yang,Yun Liu,Hong-Hui Shu,Lian-Bing Zhang,Cheng-Mei Liu
Value-added utilisation of industrial and agricultural residues is an attractive strategy to address resource shortages and promote greener chemical production. PH 3 , a hazardous by-product of hypophosphite preparation, requires careful handling due to its high toxicity and flammability. In this study, we developed a method to convert PH 3 tail gas into hydrolytically stable single-ion conducting polymers (SICPs) with potential recyclability after service. Oligoether-containing styrenic monomers (VBP-nEO) were synthesised from 4-vinylbenzyl(bis(hydromethyl))phosphine oxide (VBzHPO) via Williamson etherification in water, and the resulting functional monomers underwent conventional free-radical polymerisation to produce both homo- and co-polymers. The water-soluble homopolymers exhibited high hydrolysis resistance under both acidic and basic conditions because the phosphorus atom was covalently bonded to three substituents through P–C bonds. The co-polymers containing dissociable lithium salt segments exhibited promising ionic conductivity at moderate temperatures (4.48 × 10 −6 S/cm at 90 °C), which depended on the ethylene oxide (EO) content and EO/Li + ratio within the co-polymers. All co-polymers showed high thermal stability, with initial decomposition temperatures exceeding 300 °C and calculated LOI values above 21 %.
✓ 已验证
产品关联
DOI
高影响因子
Petroleum Science
·
2025
·
IF 6.1
Li-Yao Dai,Jin-Sheng Sun,Kai-He Lv,Ying-Rui Bai,Bo Liao,Dong-Qing Yang,Chao-Zheng Liu,Mei-Chun Li
Fractures in geological formations, which are commonly encountered during oil and gas exploration, pose significant challenges by facilitating fluid loss and reducing wellbore stability. Polymer gels hold significant promise as lost circulation materials due to their excellent deformability under pressure and self-adaptability. However, conventional gels face certain limitations, such as poor retention of gel-forming suspensions in fractures, low structural strength, and instability at high temperatures. These issues result in low pressure-bearing capacity and, consequently, reduced effectiveness in sealing formation fractures. This study presents the synthesis of a supramolecular polymer gel (SPG) composed of acrylamide (AM), 2-acrylamide-2-methylpropanesulfonic acid (AMPS), divinylbenzene (DVB), polyvinyl alcohol (PVA), TEMPO-oxidized cellulose nanofibers (CNFs), and laponite via in situ radical polymerization. Due to the synergistic effects of hydrogen bonding and electrostatic interactions, the supramolecular polymer gel-forming suspension exhibits high retention capacity in fractures. The as-synthesized gels demonstrate remarkable temperature resistance and high mechanical strength, attributed to covalent bonding, multiple hydrogen bonding, and electrostatic interactions, along with the high aspect ratio and modulus of CNFs and laponite. This study broadens the application scope of CNFs, laponite, and SPGs, offering a novel approach for the efficient development of unconventional oil and gas resources.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Hao Qin,Mintao Pang,Fanjing Wei,Zhiguo Yuan,Weizhou Jiao,Guisheng Qi,Youzhi Liu
Gas absorption plays a vital role in environmental protection and resource recovery but remains hindered by low mass transfer efficiency, large equipment size, and environmental concerns of conventional solvents. To address these challenges, this work establishes a generalizable framework that couples solvent innovation with equipment enhancement to advance sustainable process intensification. Specifically, room-temperature nonionic deep eutectic solvents (DESs) are rationally designed through precursor collection, fusion property and EHS evaluation, and solid–liquid equilibrium calculations, yielding 313 feasible DES combinations. Considering five composition ratios, 1565 DES candidates are generated, from which COSMO-RS screening identifies three promising diglyme-based systems for CO2 absorption. Their absorption behavior is experimentally validated in a rotating packed bed (RPB), confirming both the reliability of the computational screening and the significant intensification effect of high-gravity field. Mechanistic insights are further obtained from σ-profiles, interaction energy calculations, and quantum chemical analyses, revealing that van der Waals interactions dominate CO2-DES binding, while hydrogen bonding drives DES formation. These results not only validate the consistency of solvent design and experimental outcomes but also highlight the synergistic effect of integrating solvent design with high-gravity technology. Overall, the study demonstrates a versatile methodology for intensifying gas absorption, with CO2 capture as a representative application.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Huaneng Su,Tianen Wu,Huiyuan Liu,Weiqi Zhang,Qian Xu,Jianwei Ren
Liquid water flooding is one of the major challenges in the high current density operation of proton exchange membrane fuel cells (PEMFCs). Optimizing microstructure and properties of gas diffusion layer (GDL), as an essential diffusion medium in PEMFCs, is considered as a promising approach to ensure the long-term stable operation of PEMFCs at high current densities. Herein, we report a simple elevated temperature treatment technique to enhance the hydrothermal durability and water removal capacity of GDLs. Although elevating the heat-treatment temperature from 330 °C (most commonly used) to 430 °C has no obvious impact on the GDLs’ surface hydrophobicity , the GDL treated at 430 °C exhibits excellent hydrothermal stability and water removal capacity due to the increased dispersion of polytetrafluoroethylene (PTFE). In PEMFC, the membrane electrode assembly (MEA) containing the elevated-temperature-treated GDL could maintain high performance at high current densities and high humidity conditions. 200 h steady state test at high current densities and high humidity conditions manifests that the MEA with elevated-temperature-treated GDL is more stable and has better water removal capacity than the MEA with normal-temperature-treated GDL.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Pengfei Tian,Yunan Shen,Yuzhe Hua,Zilong Chen,Zhifan Chen,Qingjie Guo,Hongjing Tian
Calcium lignosulfonate, an important natural anionic surfactant widely used in chemical, agricultural and construction applications, was employed to enhance the desulfurization performance of Ca(OH) 2 by adjusting its crystal growth at the atomic level. In the digestion of CaO, calcium lignosulfonate was selectively adsorbed onto the 101 surface of Ca(OH) 2 crystal by the interaction between the sulfonic acid group of calcium lignosulfonate and Ca(OH) 2 surface. The specific adsorption was proved to inhibit the growth of the 101 crystal surface owing to the steric hindrance and electronic interactions. DFT calculations show that the adsorption energy is −1.70 eV, and the change in free energy is negative, indicating spontaneous adsorption. By XRD and SEM characterization results and DFT simulation results, while boost the Ostwald ripening of the 001 surface to form the ultrathin nanosheets with a thickness of 16–21 nm. PDOS simulation results testified that the transferring of lone pair electrons from 2p orbital to the empty 3d-orbitals of calcium and the formation of Ca-O bond because of 0.08 Ha blue shift and broadening of the 2p-orbitals of oxygen. Additionally, the calcium lignosulfonate (CLS) modified Ca(OH) 2 exhibited the increase of BET surface area by 62 % from 30.09 m 2 /g to 48.76 m 2 /g and developed a mesoporous structure with the pore volume of 0.248 cm 3 /g. Consequently, the sulfur capacity of Ca(OH) 2 –15.62 mg/g in comparison to pristine Ca(OH) 2 without CLS, while the penetration times for desulfurization experiments increased from 3300 s to 7600 s.
✓ 已验证
产品关联
DOI
高影响因子
CATALYSIS TODAY
·
2025
·
IF 5.3
Yupeng Tian,Yujia Liu,Shoutao Ma,Wei Xu,Chenyang Zhao,Bing Sun
This study introduces a heart-like micromixer reactor and Au/TS-1 catalyst to address the dual challenges of safety and efficiency in gas-phase propylene epoxidation using H 2 and O 2 . Conventional methods face inherent explosion risks and rapid catalyst deactivation due to sintering and coking. The microreactor architecture achieves over 99% flame-quenching efficiency via sub-millisecond radical suppression and enhanced heat transfer, enabling safe operation with minimal inert gas dilution (N 2 < 70 vol%). Coupled with alkali-promoted Au/TS-1 catalysts, the system sustains > 90 % propylene oxide (PO) selectivity for 500 h, outperforming static mixers where activity halved within 100 h. This work pioneers a reactor-catalyst co-design strategy, decoupling safety constraints from reaction efficiency, and establishes a scalable platform for sustainable PO synthesis. Besides, the critical gaps in industrial-scale implementation of explosive gas-phase reactions is bridged.
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2025
·Vol. 21
·期 17
·2411522
·
IF 12.1
Tao Tang,Zhong Li,Li Zhou,Pu Zhang,Yin Fen Cheng,Yi Liang,Jing Hao Zhuang,Xin Yi Hu,Qi Jie Ma,Bao Yue Zhang,Azmira Jannat,Jian Zhen Ou
The self-limiting Cabrera–Mott oxidation reaction on metal surfaces provides an effective pathway for synthesizing atomically thin 2D metal oxide. Inspired by this reaction, it is proposed that solid bismuth metals can react with dissolved oxygen and water molecules in an aqueous environment, forming an ultrathin oxyhydroxide layer on their surfaces. The lattice mismatch between the surface oxyhydroxide layer and the underlying pure metal enables the mechanical exfoliation of detached 2D oxyhydroxide nanosheets. Moreover, the sulfurization interaction between the oxyhydroxide and dissolved H 2 S expands the applicability of solid–liquid interfacial reactions for realizing 2D bismuth oxysulfide, effectively tuning their electronic bandgap energy, work function, and band position. Given its good photoresponse from blue to UV light, the optoelectronic gas sensing performances of bismuth oxysulfide are investigated. Under purple light irradiation, the Bi 2 O 1.12 S 1.88 -based gas sensor exhibits an excellent optoelectronic response factor of 48.5% toward 10 ppb NO 2 , which is the lowest detection limit for reported bismuth compounds-based gas sensor so far. This work provides a novel and facile synthesis approach for 2D metal oxyhydroxide and oxysulfide and simultaneously demonstrates the substantial potential of bismuth oxysulfide in high-performance optoelectronic gas sensing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Bowen Yang,Yangyang Long,Feng Chen,Jiabao Wang,Zhipeng Wang,Ziqiang Zhang,Yanfei Wang,Weihua Zou,Yeguang Zhang,Peng Wang,Zili Zhan,Feihu Li
Hydrogen sensor based on proton exchange membrane fuel cells (PEMFCs) was one of the most extensively studied types. However, traditional Pt/C based electrodes suffered from several drawbacks, including high cost, low catalytic efficiency for oxygen reduction reaction (ORR) and slow reaction kinetics. Herein, we developed a quasi PEMFCs hydrogen sensor utilizing MnO 2 as cathode catalyst, where the electrochemical signal was generated via the direct MnO 2 redox reaction with hydrogen, replacing the ORR process. Membrane electrode assemblies (MEAs) were successfully fabricated incorporating α-MnO 2 , β-MnO 2 , and δ-MnO 2 polymorphs. The β-MnO 2 -based sensor demonstrated best sensing performance with a maximum sensitivity of 96 nA/ppm, a 34-fold enhancement over conventional dual-platinum electrochemical sensors, under the optimized volume ratio of catalyst ink (ethylene glycol: Nafion solution: water = 1:4:4). Moreover, the β-MnO 2 -based sensor exhibited significantly superior response and recovery speed. This strategy provided an effective approach for the commercialization of next generation PEMFCs-type hydrogen sensors.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Chen Li,Can Xie,Gangtian Zhu
High molecular weight carboxylic acids (HMw-CAs), including steroid acids and hopanoic acids, are unique biomarker compounds in petroleum samples. This study introduces a mixed-mode solid phase extraction (SPE) method for the separation of these acids from crude oils. By combining hydrophobic and ion-exchange interactions, the mixed-mode SPE achieved superior recovery for separation of HMw-CAs compared to the conventional ion-exchange sorbent. The optimized SPE was coupled with gas chromatography-mass spectrometry to characterize individual steroid acids in biodegraded oils. As a result, 7 steroid acids with carboxyl groups on C-3 position were identified. Quantitative assessments of steroid acid concentrations across samples with varying biodegradation levels indicate that these acids likely originated during early diagenesis rather than forming through in-reservoir biodegradation of steranes. Notably, the observed resistance of these steroid acids to biodegradation suggests their potential as molecular markers for oil-source correlation in severely biodegraded petroleum systems.
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2025
·
IF 9.1
Lihui Huang,Mengli Zeng,Yaolan Li,Zhiping Liu,Jun Zhang,Xinjian Feng
Electrochemical lactate biosensors with simultaneously high sensitivity and wide linear detection range are desirable for health monitoring. Nevertheless, the low oxygen level in biological fluids compromises oxidase enzymatic kinetics, which consequently results in a narrow linear detection range and/or low sensitivity. In this study, we addressed this issue by fabricating a solid/liquid/gas three-phase enzyme electrode with sufficiently high oxygen levels in the local reaction zone and much enhanced oxidase enzymatic kinetics. The three-phase enzyme electrode was fabricated by successively immobilizing H2O2 electrocatalyst and lactate oxidase (LOx) on a superhydrophobic porous carbon substrate. Owing to the much-enhanced oxidase enzymatic kinetics, the linear detection upper limit of the three-phase lactate biosensor was increased up to 40 mM, about 57-fold higher than that of the conventional two-phase system (0.7 mM), while a sensitivity as high as 22.28 μA mM–1 cm–2 was maintained. Moreover, a sweat lactate sensing device was fabricated based on the three-phase enzyme electrode and utilized for lactate detection in undiluted sweat during exercise. This three-phase enzyme electrode with both high sensitivity and wide linear range provides a new approach for the development of high-performance lactate sensing systems.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）