JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Gongao Jiao,Peilin Jia,Yong Zhang,Hao Zhang,Jieshuo Zhai,Zuozhe Ding,Dongzhi Zhang
In this work, Fe 2 O 3 nanoparticles were synthesized through a simple hydrothermal method, and a high-performance Fe 2 O 3 -In 2 O 3 heterojunction hydrogen sensor was successfully fabricated via electrospinning. The morphology and elemental composition of the composite material were characterized through scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. A systematic performance test of the sensor was conducted using an experimental testing platform. The optimal doping ratio of Fe 2 O 3 was explored, and the sensor's optimal operating temperature was found to be 280°C. At this temperature, the sensor exhibited a response of 32.95 to 2000 ppm hydrogen, which is 7.6 times higher than that of the pristine In 2 O 3 , along with rapid response/recovery times (1.5 s/16 s), rosy selectivity, and stability. The improved sensor performance can be primarily ascribed to the creation of the heterojunction and the expanded specific surface area of the materials. The adsorption energy, charge transfer, and other properties of the Fe 2 O 3 -In 2 O 3 composite were calculated using density functional theory, further elucidating the reasons for the improvement in sensor performance.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Qingsong Luo,Yu Wan,Zhenxing Wang,Shuang Gao,Yan Chen,Changhao Feng
In the field of environmental monitoring, metal oxide semiconductor (MOS)-based gas sensors demonstrate significant advantages in detecting volatile organic compounds (VOCs) in ambient air. Gas sensors based on Yttrium-doped Zinc Ferrite nanofibers (Y-doped ZFO NFs) are fabricated via a conventional electrospinning method, with varying molar ratios of Y/Zn (0 at%, 2 at%, 4 at%, and 6 at%). Here, the doping of rare earth element Y significantly enhances the gas sensing performances. The structural and morphological information of both pristine ZFO and Y-doped ZFO NFs have been characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS), and Transmission electron microscope (TEM). Compared with pure ZFO, the 4 at% Y-doped ZFO (S3) exhibits a 4.46-fold higher response (R a /R g = 43.1) to 100 ppm n-butanol at 150℃ with a fast response time of 11 s. Additionally, the Y-doped ZFO NFs gas sensors exhibit outstanding selectivity, remarkable long-term stability, and a low limit of detection (LOD) attributed to their small grain size, porous and rough morphology, abundant oxygen vacancies, and the formation of n-n heterojunctions.
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Materials Today Bio
·
2025
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IF 10.2
Nan Li,Fengyun Xu,Wei Zhang,Wenke Zhang
Breast cancer remains the most prevalent malignancy globally, posing significant therapeutic challenges. Although nanodelivery systems offer promising strategies for breast cancer therapy, their clinical translation is hindered by critical limitations, including suboptimal biocompatibility, rapid immune clearance, poor targeting specificity, inefficient cellular uptake, and inadequate endolysosomal escape. To overcome these barriers, a cancer cell membrane-coated elastin polypeptide (ELP)-based nanomicelle was designed. This nanomicelle intercalated the photosensitizer IR780 within its hydrophobic region of the cell membrane coating, while encapsulating both rapamycin (Rapa)-loaded ELP micelles and free L-arginine in the hydrophilic core. Benefiting from the homotypic membrane fusion capacity of the cell membrane coating, the nanomicelles enabled active targeting of breast cancer, anchoring IR780 to the breast cancer cell membrane, while releasing L-Arg and Rapa-loaded ELP micelles into the cytoplasm. Under NIR irradiation, IR780 triggered photodynamic therapy (PDT), generating reactive oxygen species (ROS) that simultaneously damaged tumor cell membranes and catalyzed L-Arg conversion to antitumor nitric oxide (NO) gas. Simultaneously, intracellular glutathione cleaved disulfide bonds in the corona of ELP micelles, enabling controlled Rapa release for chemotherapy. In vivo studies demonstrated potent antitumor efficacy of our nanomicelles, including a tumor weight suppression rate of 87.7%, extensive necrosis, severe DNA fragmentation, and near-elimination of Ki-67 proliferation markers. This work establishes a cell membrane-camouflaged platform for synergistic chemotherapy, PDT, and gas therapy against breast cancer.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jianping Yang,Xingyue Zhou,Wei Zheng,Penglin Zhu,Fanyue Meng,Zequn Yang,Wenqi Qu,Hailong Li
Efficiently removing elemental mercury (Hg 0 ) from natural gas is a serious task to both equipment safety and ecosystem. The granulation of adsorbent powder is required to reduce pressure loss and adsorbent elutriation from a fixed-bed demercuration system. Herein, urea modified CuO (Urea/CuO) pellets were developed for Hg 0 adsorption from natural gas with H 2 S. The characterization results show that the addition of urea accelerated the formation of pore structure and surface oxygen, thus enhancing the Hg 0 adsorption performance of CuO pellets. The Urea/CuO pellets with 20 % urea additive amount exhibited 93 % Hg 0 removal efficiency under the existence of 500 ppm H 2 S and a gaseous hourly space velocity of 1.21 × 10 5 h −1 . H 2 S was essential to in-situ convert Urea/CuO pellets into a highly active Hg 0 adsorbent. With the increase of H 2 S concentration from 0 to 1000 ppm, the Hg 0 removal efficiency was raised from 34 % to 93 %. Urea/CuO pellets performed well for Hg 0 adsorption at 10–50 °C, which was the representative temperature window of natural gas processing. The Hg 0 adsorption capacity and uptake rate of Urea/CuO with 500 ppm H 2 S reached as high as 27.06 mg·g −1 and 2.44 μg·g −1 ·min −1 , which largely exceeded those of commercial activated carbons specialized for Hg 0 adsorption as well as typical granulated Hg 0 adsorbents reported in previous literature. The existence of H 2 S in natural gas in-situ converted CuO into CuS. The S 2 2− on the formed CuS could act as active sites for Hg 0 adsorption, in which gaseous Hg 0 was captured as stable mercury sulfide (HgS). The deactivated adsorbent could be regenerated and reused by thermally decomposing HgS and replenishing the consumed surface oxygen and the sintering surface. With these advantages, the developed Urea/CuO pellets appears to be a promising Hg 0 adsorbent from natural gas with H 2 S.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Qin He,Peiyuan Shao,Lixiao Shen,Miao Ma,Zigang Zhao,Wen Ye,Huatao Wang,Yunlong Zhang,Lei Zhao,Zhenbo Wang
Microporous layers (MPLs) play a pivotal role in proton exchange membrane fuel cells (PEMFCs) by regulating water management and reactant transport. However, conventional MPLs with single-sized pores lack the structural versatility to simultaneously meet the requirements for efficient gas transport and water removal, which severely limits the performance improvement of PEMFCs. This study fabricates an MPL with a graded pore structure through solvent-controlled differentiation and a stepwise coating–sintering process, which synergistically enhances capillary-driven gas supply and liquid water removal. Multiphysics simulations confirm that the gradient structure improves water drainage and gas diffusion, and this improvement is reflected in the superior performance of the graded MPL compared with conventional single-layer structures under varying backpressure conditions. The MPL with a graded pore structure exhibits the highest output performance of 1860 mW cm–2 under hydrogen/air operation at a high relative humidity of 100%, representing an improvement of approximately 36.8% over the commercial MPL, and still delivers a 10.4% enhancement under 75% relative humidity. The notable performance gains achieved underscore the practical potential of the fabrication method, while our findings establish critical structure–transport correlations for MPL optimization in advanced PEMFCs.
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ENERGY & FUELS
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2025
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IF 5.3
Hui Zhang,Jing-Chun Feng,Bin Wang,Yongming Shen,Si Zhang
Methane migration and transformation in marine environments constitute a critical pathway within the global carbon cycle, where hydrate formation serves as a pivotal physical carbon sequestration mechanism to capture submarine methane seepage. Despite its significance, the dynamics of hydrate formation and its consequent impacts on fluid transport behaviors within porous media under active methane seepage conditions remain poorly understood. This study systematically investigated methane hydrate formation mechanisms in variable-sized porous media (150–840 μm particle diameters) through real-time visualization using X-ray computed tomography. Quantitative analysis revealed particle size exerts dual control over gas migration channel evolution and hydrate formation efficiency. In the 158–178 μm small-particle system, high flow resistance leads to the formation of macroscopic preferential channels. Hydrates grew along the channel walls, forming a solidified framework that enhanced the fluid migration but limited further hydrate formation due to the limited surface area. In contrast, the 710–840 μm large-particle system had lower flow resistance and gas displaces the liquid between particles formed a multibranch microchannel network. Although the permeability was only 1/10 of the small-particle system, the abundant gas–liquid interfaces promoted the formation of hydrate, resulting in 1.65 times more hydrate. These findings highlight the complex influence of particle size on gas transport mechanisms and hydrate formation, offering valuable insights for gas migration models and hydrate-related studies.
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ACS Applied Materials & Interfaces
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2025
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IF 8.2
Zu-E Hu,Fu-Zhong Zhang,Minfeng Zeng,Ye-Tao Zhang,Jing Li,Yu-Ting Che,Jun-Feng Feng,Bang-Jing Li,Sheng Zhang
Acute lung injury (ALI) is a serious clinical disease the severe stage of which develops into acute respiratory distress syndrome (ARDS), with a high mortality rate of 35 to 40%. Despite decades of research and development of drugs such as corticosteroids and β-2 adrenergic agonists, treatment efficacy has been limited due to an insufficient drug concentration reaching the lungs. Here, a food-grade γ-cyclodextrin-based metal–organic framework (γCD-MOF) modified with cholesterol (CHS) is developed to load sulfur dioxide (SO2) as a dry powder inhaler (DPI) platform (CHS-CD-MOF@SO2) for ALI treatment. CHS-CD-MOF@SO2 has suitable storage stability and excellent aerodynamic characteristics, with a fine particle fraction (FPF) of 40%, a geometric standard deviation (GSD) value of 1.61, and a mass median aerodynamic diameter (MMAD) of 4.8 μm, which can effectively target the lungs. By employing rhodamine B (RhB) as a fluorescence indicator, in vivo fluorescence imaging confirms the superior lung-targeting capability of CHS-CD-MOFs. CHS-CD-MOF@SO2 can release 92.3 ± 4.4% of SO2 in PBS solution within 5 min. What’s more, the permeability of simulated lung fluid within 30 min is as high as 85%, which has the potential for rapid treatment of ALI. In an ALI mouse model, CHS-CD-MOF@SO2 reduces the expression of pro-inflammatory factors tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), and IL-6 by regulating the P38 and nuclear factor kappa B (NF-κB) pathways. It also significantly improves the lung tissue dry/wet ratio and reduces neutrophil infiltration. Importantly, this treatment achieves therapeutic outcomes in key efficacy parameters that was comparable to or better than those of dexamethasone (DXMS), a frontline drug for ALI, underscoring its significant therapeutic potential. This study presents a novel strategy for treating ALI using a DPI-based gas messenger platform. This study provides a novel therapeutic strategy to treat ALI using DPI-loaded gas messengers.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Weijie Fan,Bingbing Bao,Yihang Li,Li Chen,Hui Dan,Yi Ding
Tin-based materials are promising for iodine capture. However, they suffer from the instability of adsorption product SnI 4 that is easily hydrolyzed even in atmospheric environment due to the presence of moisture. Herein, we report a strategy of constructing the hydrophobic microenvironment on Sn 0 @SBA-15 materials, which isolates moisture and subsequently stabilizes SnI 4 . Hydrophobic Sn 0 @SBA-15 materials (P-Sn 0 @SBA-15) were fabricated by polymethylhydrosiloxane (PHMS) modification and applied for iodine capture. The obtained P-Sn 0 @SBA-15 exhibited a record high iodine adsorption capacity (2599 mg/g) among inorganic adsorbents . The dominant adsorption mechanism was found that Sn 0 reacted with I 2 to form SnI 4 . Remarkably, SnI 4 in P-Sn 0 @SBA-15 was stable up to 3 months exposure to humid atmosphere, while almost all SnI 4 in Sn 0 @SBA-15 was hydrolyzed. The obtained P-Sn 0 @SBA-15 could be added to the list of iodine adsorbents due to its excellent adsorption capacity and stability. Moreover, the facile strategy could provide reference for the development of other functional materials .
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ACS Catalysis
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2017
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IF 10.614
Ming Xu,Shan He,Hao Chen,Guoqing Cui,Lirong Zheng,Bin Wang,Min Wei
The modulation of strong metal–support interaction (SMSI) plays a key role and remains a challenge in achieving the desired catalytic performance in many important chemical reactions. Herein, we report a TiO2–x-modified Ni nanocatalyst with tunable Ni–TiO2–x interaction via a two-step procedure: preparation of Ni/Ti mixed metal oxide (NiTi–MMO) from NiTi-layered double hydroxide (NiTi–LDH) precursor, followed by a further reduction treatment at different temperatures. A combination study (XRD, TEM, H2-TPR, XPS, and in situ EXAFS) verifies that a high reduction temperature enhances the Ni–TiO2–x interaction, which results in an increased coverage degree of Ni nanoparticles by TiO2–x as well as electron density of interfacial Ni (Niδ−). Moreover, the creation of a Niδ−–Ov–Ti3+ interface site (Ov denotes oxygen vacancy) induced by strong Ni–TiO2–x interaction serves as dual-active site to efficiently catalyze the water–gas shift reaction (WGSR). The optimized catalyst (Ni@TiO2–x(450)) via tuning Ni–TiO2–x interaction gives a TOF value of 3.8 s–1, which is ∼7 times larger than the conventional 15%Ni/TiO2(450) catalyst. Such a high catalytic efficiency is attributed to the interfacial site (Niδ−–Ov–Ti3+) with medium strength of metal–support interaction, as revealed by in situ diffuse reflectance Fourier transform infrared spectroscopy (in situ DRIFTS), which promotes the synergic catalysis between Niδ− and oxygen vacancy toward WGSR.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2022
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IF 6.364
Wanli Zhao,HongLi Suo,Shuo Wang,Lin Ma,Lei Wang,Qiuliang Wang,Zili Zhang
MgB 2 superconductor pellets were synthesized through Mg gas infiltration method using nanosized- and microsized B powders. There was a marked difference in the superconducting properties of the two samples, particularly in the pinning force and dominant pinning mechanism. The microstructures of the samples were observed using HR-TEM and STEM-HAADF, and the results showed that the primary reason for the difference in the superconducting properties is the distribution of the nanosized second-phase particle MgO. Additionally, a feasible reaction model for the Mg gas infiltration method was established. Compared to the Mg liquid infiltration method, the gas infiltration showed better penetrability ability with a small amount of residual Mg. This study presents a novel synthesis process to fabricate an MgB 2 pellet with superior density and superconducting properties. This method can be used in multiple applications such as superconducting bearings, compact superconductor magnets, and magnetic shielding.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2016
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IF 3.299
Xiao Xu,Qiang Yang,Chao-yang Wang,Xiao-ling Ge,Hua-lin Wang
Although compact separation by a hydrocyclone is popular in the chemical and petro-chemical industry, the separation of dissolved gas from continuous liquid in a hydrocyclone is rarely mentioned, and few investigations consider the gas solubility changes occurring with the cyclone flow. This work investigates dissolved carbon dioxide separation from water by an inner cone hydrocyclone. When the inlet mass flow is less than 1.2 m 3 /h, increasing the inlet mass flow could increase the separation efficiency. When the inlet mass flow is more than 1.2 m 3 /h, increasing the inlet mass flow will decrease the separation efficiency. An optimum inlet mass flow of 1.2 m 3 /h can provide the maximum separation efficiency of 40.2%. Turbulence simulations also assist in analyzing the flow pattern and the separation progress.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2012
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IF 1.693
Jiangfeng Yang,Qiang Zhao,Hong Xu,Libo Li,Jinxiang Dong,Jinping Li
We prepared several different surfaces and pore volumes on small pore zeolites by hydrothermal synthesis and ion exchange (Li+, Na+, and Ca2+) based on three basic gas diameter grade structures of zeolites: KFI (0.39 × 0.39 nm), CHA (0.38 × 0.38 nm), and LEV (0.36 × 0.48 nm), which were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and elemental analysis. The surface area and microporous volumes were calculated using the Dubinin–Radushkevitch (D-R) equation based on CO2 adsorption at 273 K. The CHA was synthesized with a lower Si/Al ratio, and the surfaces and microporous volumes were changed greatly by ion exchange. KFI had a higher Si/Al ratio, and the scope of the surface could be kept smaller. Focusing on the CO2, CH4, and N2 adsorption isotherms at high pressure (1 MPa), we found that the samples were exchanged by Li+ and Na+ with bigger surfaces and greater adsorption volumes. The orifice diameter was very important in the sieving of CO2 and N2 or CO2 and CH4, while Na-LEV had an excellent sieving effect because N2 and CH4 could not diffuse into its structure like CO2. From the viewpoint of the separate adsorption equilibria: Na-zeolites had the highest data adsorption equilibrium selectivity for CO2 and N2 or CO2 and CH4, followed by Li-zeolites, which only had a strong adsorption potential of CO2; K-zeolites with high SCO2/N2 and SCH4/N2, based on the strong adsorption of CO2 and CH4. We conclude that the adsorption potential order was K-zeolites > Na-zeolites > Li-zeolites, so the bigger ions had a stronger affinity.
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