JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118674
·
IF 6.3
Zhiqiang Hou,Yikan Yang,Xing Wei,Yongkai Wang,Yao Tang,Chao Wang,Zhicai Zhang,Hao Li,Jiao Yang,Jun Gao,Rui Fang,Haikuo Wang
Existing polycrystalline stishovite bulk synthesized from traditional strategies generally suffer from low purity, grain coarsening and minuscule sample size. Here, we successfully synthesized millimeter-scale high-performance polycrystalline stishovite with nano-sized grains from microcrystalline α-SiO 2 powder in a large-volume press. An anomalous variation in grain size from micrometer to nanometer is realized by high-pressure transformation of microcrystalline precursors. Remarkably, the sample with an average grain size of 91.6 nm synthesized at 15.6 GPa and 800 °C possesses the highest Vickers and Knoop hardness among reported pure stishovite materials, meanwhile higher indentation crack resistance ( K IC = 3.1 MPa m 1/2 ), about double that of stishovite single crystals. The outstanding mechanical properties stem from the synergistic effects of pure stishovite phase, dense microstructure, fine grain size, and high-concentration dislocations. This work provides valuable approach for synthesizing advanced structural ceramics and next-generation superhard materials by high-pressure transformation of microcrystalline precursors.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 10
·e70594
·
IF 12.1
Xingyu Wang,Haixia Zhou,Miaomiao Li,Pengcheng Xu,Zhongxiao Zhang,Yuanshuai Fu,Yuan Zhang,Yongheng Zhu
en This link goes to a English section zh This link goes to a Chinese section Developing rapid, precise gas sensors for Listeria monocytogenes ( LM ) biomarker detection faces challenges due to suboptimal gas-solid interactions. Herein, we report the rational synthesis of amino-functionalized mesoporous SiO 2 hollow nano-doughnuts (MS-2-NH 2 -2) via modification with (3-aminopropyl) trimethoxysilane (AAPTMS), which enables exceptional detection performance for the LM biomarker 3-hydroxy-2-butanone (3H2B). The MS-2-NH 2 -2-based quartz crystal microbalance (QCM) sensors exhibited high sensitivity (1980 Hz@50 ppm 3H2B), effective selectivity, low detection limit (100 ppb), rapid response/recovery kinetics (9/10 s), good repeatability, and outstanding humidity resistance. Furthermore, to enhance the selectivity performance of MS-2-NH 2 -2 in practical applications, the K-nearest neighbor algorithm is implemented to identify 3H2B, single interfering gases, and mixed gases. These performances stem from AAPTMS-derived amino groups, mesoporous structure, and doughnut-like hollow morphology, which enhance gas-material interactions. Temperature-programmed experiments revealed a −45.18 kJ mol −1 enthalpy change, confirming reversible chemisorption between MS-2-NH 2 -2 and 3H2B. In situ DRIFTS confirmed selective detection driven by –NH 2 –carbonyl interactions. Additionally, practical validation in complex food matrices demonstrates the sensor's capability for real-time 3H2B monitoring with high accuracy and reliability, suggesting its potential as a rapid, field-deployable screening tool for LM prioritization in food safety applications. 摘要 en This link goes to a English section zh This link goes to a Chinese section 在开发针对单增李斯特菌( Listeria monocytogenes , LM )生物标志物检测的快速响应与精准识别气体传感器过程中,因气体分子与固体传感器界面间的相互作用效率低下,导致检测灵敏度与特异性提升面临显著技术挑战。本研究通过(3-氨丙基)三甲氧基硅烷(AAPTMS)改性,成功合成了氨基功能化空心介孔SiO 2 纳米甜甜圈(MS-2-NH 2 -2),实现了对 LM 生物标志物3-羟基-2-丁酮(3H2B)的高效检测。基于MS-2-NH 2 -2的石英晶体微天平(QCM)传感器表现出高灵敏度(1980 Hz@50 ppm 3H2B)、高选择性、低检测限(100 ppb)、快速响应/恢复动力学(9/10秒)、良好重复性和优异抗湿性。为提升MS-2-NH 2 -2在实际应用中的选择性表现,引入K近邻算法实现了对3H2B、单一干扰气体及混合气体的精准识别。这些优异性能源于AAPTMS衍生的氨基基团、介孔结构及甜甜圈状空心形貌的协同作用,增强了气体-材料相互作用。程序升温实验计算得出的焓变值(−45.18 kJ mol −1 ),证实了MS-2-NH 2 -2与3H2B之间存在可逆化学吸附。原位漫反射红外傅里叶变换光谱(DRIFTS)验证了氨基-羰基相互作用驱动的特异性检测机制。在复杂食品基质中的实际应用验证表明,该传感器可实现3H2B的即时检测,展现出高精度与可靠性,彰显了其作为快速、精准且可现场部署的 LM 检测工具在食品安全领域的巨大应用潜力。
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Li Shiheng,Li Wei,Zhang Baojing,Wang Xiaohong,Feng Peizhong
The widespread application of solid amine adsorbents is hindered by the cost and complexity of synthesizing porous supports, which typically require templating agents and energy-intensive calcination. Herein, we report a facile and mild method to fabricate nanoporous silica, involving CO 2 -induced gelation of low-cost sodium metasilicate, followed by freeze-drying. The obtained silica support exhibits a pore volume of 1.22 cm 3 /g and a specific surface area of 378.5 m 2 /g, which is suitable for amine loading. After impregnation with tetraethylenepentamine, the optimal adsorbent with 50% tetraethylenepentamine loading delivers a competitive CO 2 adsorption capacity of 3.48 mmol/g at 70 °C. More importantly, it demonstrates exceptional cycling stability, maintaining 3.37 mmol/g of CO 2 adsorption capacity after 10 cycles, with a minimal capacity loss of only 0.3% per cycle. This work demonstrates that high-performance adsorbents can be fabricated via a drastically simplified process, offering an amenable to scale-up and economically attractive strategy for practical CO 2 capture. Graphical abstract This paper presents an innovative and template-free synthesis of a high-performance solid amine adsorbent for CO 2 capture. The method innovatively utilizes CO 2 as both a reactant and an in-situ porogen to fabricate nanoporous silica from sodium silicate via a simple one-pot gelation process, entirely bypassing the need for templating agents and energy-intensive calcination. After freeze-drying and tetraethylenepentamine (TEPA) impregnation, the optimal adsorbent with 50% TEPA loading achieves a high CO 2 capacity of 3.48 mmol/g at 70 °C and demonstrates exceptional cyclic stability with 96.8% capacity retention after 10 cycles. This study provides a simplified, cost-effective, and scalable pathway for practical carbon capture applications.
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高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2026
·
IF 5.2
Peng Yi,Yingxue Wang,Tongxin Lv,Yupeng Wu,Rui Sun,Ming Xiang,Yongjun Shi
With the extraction of petroleum, large volumes of oily wastewater threaten both human health and the natural environment. Through efficient oil-water separation, achieving wastewater purification has become a pressing issue. This work employs laser-induced SiO 2 deposition to fabricate a long-term durable membrane with superhydrophilicity and underwater superoleophobicity. By optimizing pulse laser parameters, this work constructed uniform ripple-like micro-nano rough structures on the substrate surface. This enhances the deposition efficiency of SiO 2 nanoparticles, forming a stable micro-nano dual-layer rough structure that enhances the wettability of the membrane. This work conducts experiments to evaluate the membrane’s practical application performance. These results demonstrated that the membrane exhibits an outstanding separation efficiency of 99.8%. Not only did it maintain a separate efficiency above 99% after 80 cycles, but it also retained a 156° underwater oil contact angle and a 3.2° oil rolling angle after 100 days of air exposure, demonstrating exceptional long-term durability. Meanwhile, the membrane exhibits superior anti-oil-fouling performance and mechanical durability, indicating significant potential for practical applications.
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Yifei Hu,Min Zhu,Mengqing Zhang,Shujuan Ma,Shouwan Tang,Hui Lyu,Yinmao Wei,Junjie Ou
A novel etched honeycomb supermacroporous core-shell SiO 2 with hierarchical pores. • Exerts effective spatial confinement on chiral selector for sufficient loading. • CSP-2 shows superior enantioselectivity on short column, surpassing others. The separation of enantiomers is of significant importance in pharmaceutical production and chemical synthesis. In this work, a novel kind of honeycomb supermacroporous core-shell SiO 2 (HSC-SiO 2 ) was controllably synthesized via an etching method. By precisely regulating the amounts of CTAB, ODA, and NH 4 F, a hierarchical pore structure composed of a mesoporous framework and supermacroporous channels was successfully constructed. The optimized material, denoted as HSC-SiO 2 -2, exhibited a specific surface area of 79.2 m 2 ·g -1 , an average pore size of 6.1 nm, and a maximum pore size of 136 nm. Chiral stationary phases (CSPs) were prepared by coating cellulose tris(3,5-dimethylphenylcarbamate) (CDMPC) onto the surface of aminofunctionalized HSC-SiO 2 . Evaluation of the separation performance for twelve racemic compounds demonstrated that CSP-2, fabricated from HSC-SiO 2 -2, possessed superior enantioselectivity, achieving baseline separation for eight analytes on a short 100 mm column. Specifically, it achieved an α of 2.75 and an Rs of 5.32 for metoprolol, an Rs of 3.04 for trans -stilbene oxide, and an Rs of 2.21 for benzoin. Comparative tests revealed that its resolution for trans -stilbene oxide was comparable to that of the commercial Chiralcel OD-H column (Rs = 3.01), while its Rs values for metoprolol and benzoin were markedly higher than those of the traditional fully porous silica-based CSP (Rs = 2.25 and 1.38, respectively). The performance enhancement is attributed to the hierarchical pore architecture with a favorable confinement effect, which provides a high surface area for sufficient chiral selector loading while enabling efficient mass transfer through the supermacroporous channels. This research offers a new design strategy for high-performance chiral separation supports, showing promising potential for applications in efficient enantiomer analysis and purification.
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PubMed
高影响因子
JOURNAL OF FLUORESCENCE
·
2026
·
IF 3.4
Chen Licong,Shi Rui,Han Yunfei,Wang Limei,Li Xingyun,Wang Zhongzhi
1-Hydroxypyrene (1-HP) is the final metabolite of polycyclic aromatic hydrocarbons in the human body, and Fe 3+ is an important trace element for human growth and metabolism. When 1-HP or Fe 3+ is detected in human urine, it indicates that there is a problem with the human health condition. The detection of 1-HP and Fe 3+ in urine can reflect the health status of the human body. In this work, Eu(III) complexes coated silane coupling agent (WD-53) modified spherical SiO 2 core-shell composite material (SiO 2 -WD-53@L-Eu) was prepared and used as the fluorescent probe for detecting 1-HP and Fe 3+ . The fluorescence intensity of SiO 2 -WD-53@L-Eu with the same mass concentration is 1.37 times that of L-Eu, while the content of Eu 3+ in SiO 2 -WD-53@L-Eu is only about one-third of L-Eu. Moreover, the dispersion stability of SiO 2 -WD-53@L-Eu in solvents is much higher than that of L-Eu. Furthermore, SiO 2 -WD-53@L-Eu exhibits the sensitive response to 1-HP and Fe 3+ without interference from inorganic salts, urea, glucose and other components. The fluorescence quenching constants for detecting 1-HP and Fe 3+ are 9.62 × 10 5 M − 1 and 5.29 × 10 3 M − 1 , respectively, and the limits of detection are 5.93 × 10 − 6 M and 1.08 × 10 − 3 M, respectively. We further employed the SiO 2 -WD-53@L-Eu composite material within a Tris-HCl buffer to detect 1-HP and Fe 3+ , respectively, and obtained Stern-Volmer quenching constants (K sv ) of 3.662 × 10 5 M − 1 and 1.957 × 10 3 M − 1 . Compared to L-Eu, composite material SiO 2 -WD-53@L-Eu has higher fluorescence efficiency, better dispersion stability and chemical stability. Therefore, SiO 2 -WD-53@L-Eu is considered a promising material for detecting 1-HP and Fe 3+ in urine.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·Vol. 74
·期 30
·23947-23964
·
IF 6.7
Zhou Xinyue,Yu Wenxin,Cui Yanhong,Meng Xiang,Zhang Jian,Jiang Qingxue,Yang Bo,Ma Xiaoran,Ma Lin,Liang Qingwei,Wang Xuemin
Salt stress disrupts photosynthesis, ion homeostasis,
and antioxidant
systems, thereby inhibiting plant growth and reducing the yield and
quality. This study investigated the physiological and molecular mechanisms
of salt stress alleviation by foliar application of different concentrations
of silicon dioxide nanoparticles (SiO 2 NPs) in oats under
150 mM NaCl. Physiological and transcriptomic analyses were performed.
300 ppm of SiO 2 NPs significantly promoted growth and photosynthesis,
enhanced antioxidant enzyme activities, reduced oxidative damage,
and maintained Na + /K + balance while improving
nutritional quality. SiO 2 NPs regulated genes involved
in photosynthesis and carbon metabolism and upregulated the ion transporter
genes HKT1;1 , HKT7 , and HKT9 and ROS signaling genes MPK6 and WRKY33 . HKT proteins were localized to the plasma membrane.
Weighted correlation network analysis (WGCNA) identified six hub genes
associated with the growth and photosynthetic traits. Overall, SiO 2 NPs enhance salt tolerance, yield, and quality in oat by
maintaining Na + /K + homeostasis, activating ROS
signaling, and sustaining photosynthesis and carbon metabolism.
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PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2026
·
IF 8.9
Bing Zhai,Xinwei Chu,Teng Zhang,Chongtian Liu,Lin Zhou,Chenyu Huang,Shuxia Ren,Guowen Sun
The reinforcement efficiency of polypropylene fibers in foamed concrete is fundamentally constrained by their inherent hydrophobicity, resulting in poor dispersion and weak interfacial adhesion. This study develops two surface modification strategies by constructing a continuous nano-SiO 2 coating (PFNS) and discrete microscale silica fume anchoring sites (PFSF) on the fiber surface via chemical oxidation and layer-by-layer self-assembly, respectively. These modifications transform the fiber surface from hydrophobic to hydrophilic. Experimental results demonstrate that both modifications improve composite performance relative to unmodified fibers. At a fiber content of 1.5 vol%, the flexural strength of specimens reinforced with PFNS and PFSF increases by 33.3% and 23.8%, respectively, corresponding to 3.5 and 2.5 times the increase achieved by the unmodified fibers. The 800 h drying shrinkage strain is reduced by 30.7% and 23.3%, respectively, while the cracking area of large slabs decreases by 71.6% and 41.5%, compared with the unmodified fiber group. The superior performance of PFNS is attributed to the continuous coating that promotes the growth of calcium silicate hydrate gels at the interfacial transition zone and densifies the matrix by filling micropores. In contrast PFSF strengthens the fiber-matrix interface primarily through the mechanical anchoring effect of discrete surface particles. The improved fiber dispersion and refined pore structure contribute to lower water absorption and reduced drying shrinkage. This work clarifies the regulatory role of fiber surface topography in governing the macroscopic performance of foamed concrete and offers a theoretical foundation for the interfacial design of high performance cement-based composites.
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Meng-Jie Chang,Ge Bai,Jun Liu,Qiu-Yu Hu,Shu-Yi Hu,Yan Yin,Shi-Shun Cao
Aerogels prepared from organosilane are effective for oil sorption due to their elasticity, hydrophobicity and porosity but limited with flame retardancy and thermal stability. In this work, we reported the facile and straightforward fabrication of graphene oxide (GO) composited silica aerogels (SGAG) by simple sol-gel method and ambient pressure drying (APD) using methyltrimethoxysilane (MTMS) and dimethyldimethoxysilane (DMDMS) as silane sources, SiO 2 nanofibers (SNFs) and pristine GO nanosheets as the basic templates. The prepared SGAG shows interpenetration networks between core/shell nanofibers and sandwich nanoplates by the deposited silica nanoparticles on the GO and SNFs, respectively. The SGAG exhibits low-density (0.025 g cm −3 ) and high porosity (97.95 %), superhydrophobicity (WCA=159°) and large sorption capacity of dichloromethane as high as 69.35 g g −1 , strong mechanical compressive strength (14.07 KPa) at 80 % strain. Most importantly, the introduced GO provides the SGAG intense light absorption (95.95 %) in the 200–2500 nm and excellent thermal stability and flame retardancy. As a result, the SGAG evaporator shows a high photothermal interfacial evaporation rate of 1.33 kg m −2 h −1 , which expands the application of SGAG for the utilization of solar energy and production of clean water from seawater and wastewater.
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 3
·212
·
IF 4
Yu Wang,Xuemin Cao,Yuting Dai,Tao Yan,Xiangjie Zhang,Huizi He,Yujie Xie,Tiejun Lin,Chang Song,Peng He
This study investigates the hydroformylation of C5+olefins derived from Fischer–Tropsch synthesis (FTS) using Rh-based catalysts supported on zeolites (MFI, MEL) and SiO2. A series of catalysts were synthesized through two different methods: a one-pot hydrothermal crystallization process, which results in highly dispersed Rh species encapsulated within the zeolite framework (Rh@MFI, Rh@MEL), and an impregnation method that produces larger Rh nanoparticles exposed on the support surface (Rh/MFI, Rh/MEL, Rh/SiO2). Characterization techniques such as BET, TEM, and FTIR were employed to evaluate different catalysts, revealing significant differences in the dispersion and accessibility of Rh species. Owing to its more accessible mesoporous structure, Rh/SiO2with a pore size of 5.6 nm exhibited the highest olefin conversion rate (>90%) and 40% selectivity to C6+aldehydes. In contrast, zeolite-encapsulated catalysts exhibited higher selectivity for C6+aldehydes (~50%) due to better confinement and linear aldehyde formation. This study also examined the influence of FTS byproducts, including paraffins and short-chain olefins, on the hydroformylation reaction. Results showed that long-chain paraffins had a negligible effect on olefin conversion, while the presence of short-chain olefins, such as propene, reduced both olefin conversion and aldehyde selectivity due to competitive adsorption. This work highlights the critical role of catalyst design, olefin diffusion, and feedstock composition in optimizing hydroformylation performance, offering insights for improving the efficiency of syngas-to-olefins and aldehydes processes.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Chengfei Zhang,Pengze Zhang,Mingyuan Zhu
CuO-ZnO is a key catalyst widely used in catalytic processes such as dehydrogenation and hydrogenation. Hence, revealing the impact of H2O and H2 on the stability of CuO-ZnO catalysts is of critical importance. In this work, a CuO-ZnO/SiO2 catalyst with highly dispersed CuO-ZnO interface active sites was synthesized, and the structure-activity relationship and deactivation mechanism were systematically investigated using a model reaction (the cyclodehydrogenation of 1-amino-2-propanol to 2,5-dimethylpyrazine) that simultaneously generates H2O and H2. Under optimized reaction conditions (250 °C, space velocity: 1.5 h-1, and N2 flow rate: 8 mL/min), a 2,5-dimethylpyrazine yield of 68.1% was achieved over the 20%CuO-ZnO/SiO2-3:2 catalyst. The investigation into the deactivation mechanism reveals that Cu species agglomeration and carbon deposition are the primary reasons for the decline in activity. The roles of H2 and H2O in catalyst stability were found to be different: H2 suppressed the aggregation of metallic Cu0, while H2O enhanced stability by suppressing the formation of carbon deposits. Based on the understanding of the deactivation mechanism, catalyst regeneration was performed through air calcination, recovering the 2,5-dimethylpyrazine yield to 88.1% of the initial value. Overall, this work reveals the deactivation pathways and stabilization mechanisms of CuO-ZnO/SiO2 catalysts under reactive atmospheres containing H2 and H2O, offering theoretical guidance for industrial application and design of a highly stable CuO-ZnO catalyst.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 13
·8820-8833
·
IF 4.4
Wang Wenhao,Liu Jiaming,Zhang Xiandie,Ma Xinwen,Zeng Qingqing,Zhou Xiang
In this study, silicon nanoparticles (n-Si) with active component content of 93.2% were successfully synthesized through vapor-phase magnesiothermic reduction using mesoporous SiO 2 precursors as templates. The as-prepared n-Si exhibited an average particle size of about 85 nm and a specific surface area of 147 m 2 /g. The potential of prepared n-Si as fuel for metastable intermolecular composites was validated through thermal analysis and constant-volume combustion tests, by using KClO 4 as the oxidizer, although the reactivity was generally lower than that of n-Al/KClO 4 counterpart. Notably, n-Si/KClO 4 exhibits significantly reduced sensitivity to friction (30% versus 70%) and electrostatic discharge (24,750 mJ versus 12 mJ) compared to n-Al/KClO 4 . In summary, n-Si fuels prepared via the vapor-phase magnesiothermic reduction method exhibited high active component content, moderate reactivity, and extremely low electrostatic sensitivity, demonstrating application potentials in metastable intermolecular composites to substitute for n-Al where a balance between combustion characteristics and enhanced electrostatic safety is required. Graphical
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高影响因子
危险品化学品经营许可证（带存储）