JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xiangsen Xu,Qin Huang,Yajing Wu,Yiqing Zeng,Feng Zhang,Zhaoxiang Zhong,Weihong Xing
For catalytic membranes, the loading of catalysts provides the membrane substrate with novel catalytic functionality, while simultaneously inducing membrane surface reconstruction. However, the effect of such surface reconstruction on performance remains unclear. Herein, VCeTi/SiC catalytic membranes with distinct surface structures were fabricated by three distinct preparation routes. Their NH 3 -SCR activity, gas permeance, and separation performance were systematically evaluated. For both VCeTi/SiC-A and VCeTi/SiC–B, the multi-step impregnation and catalyst blockage led to significantly reduced pore sizes (7.6 μm and 5.4 μm) and poor pore size distributions. In contrast, the VCeTi/SiC–C catalytic membrane prepared by single-step solution impregnation method exhibited an optimal catalyst distribution while largely maintaining a concentrated pore size distribution almost identical to the original catalytic membrane. Benefiting from the more uniform gas flow within the carrier owing to its concentrated pore size distribution, it exhibited the widest operating temperature window for NH 3 -SCR with >90% NO conversion from 300 to 450 °C. Meanwhile, VCeTi/SiC–C also displayed the improved pore size (8.0 μm), the highest gas permeance (380 m 3 m −2 h −1 ·kPa −1 ) and the lowest filtration resistance. Furthermore, we discovered "defect-compensating effect" of dust in combined removal experiment, where dust particulates contribute to enhanced denitration performance. This work provides critical insights into the surface design of high-performance catalytic membranes for medium-high temperature gas purification applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Haiyang Li,Leilei Zhang,Xuemin Yin,Mengjiao Li,Boshi Song,Houbu Li,Hejun Li
Hypersonic thermal protection requires materials with thermal shielding and electromagnetic wave absorption capabilities. While silicon carbide (SiC) aerogel is a promising candidate due to their dielectric properties, porosity, and thermal stability, the conventional forms face an intrinsic trade-off between microwave absorption and thermal insulating. Inspired by natural hollow structure of reeds, this work proposes a novel in-situ growth technique combined with a sacrificial-template process to fabricate a lightweight SiC-based composite aerogel featuring a unique hollow microtube-nanowire hybrid architecture (SCN-SCH). Impressively, the hollow microtubes, in synergy with the nanowire network and optimized SiC content, contribute to enhanced electromagnetic wave absorption through improved impedance matching and abundant heterogeneous interfaces. Crucially, this hollow architecture achieves substantially improved insulation performance while preserving the ultralow density (0.038 W/(m·K) thermal conductivity) and mechanical robustness (70% compressibility, resilience over 50 cycles) of the aerogel. Moreover, this multiscale structure of SCN-SCH aerogel delivers a broadband absorption band extending to 3.9 GHz at a thickness of 2.6 mm and a minimum reflection loss of −59.37 dB. This study not only provide a bioinspired multiscale engineering strategy of SiC aerogels to effectively improve the conflict between thermal insulation and microwave absorption, but also offers a new design paradigm for high-performance multi-functional materials in extreme environments.
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高影响因子
CERAMICS INTERNATIONAL
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2026
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IF 6
Xia Yang,Huihuang Ma,Yikun Liu,Qunfang Lin,Xiaodong Zhou
Silica (SiO 2 ) nanofiber membranes are promising shields for high-energy lasers due to strong multiple scattering; however, protective performance is often limited by heat accumulation when optical shielding and thermal management cannot be achieved simultaneously. Here, we report a photothermal co-design strategy based on a multilayer SiC/SiO 2 ceramic nanofiber membrane constructed by periodic stacking of a repeating SiO 2 scattering / SiC-SiO 2 thermal-spreading / SiO 2 scattering unit. The SiO 2 layers provide high reflectivity via multiscale scattering, whereas the interfacial-engineered SiC-SiO 2 layer is formed through molecular-scale crosslinking between SiC and SiO 2 , which establishes continuous in-plane thermal-spreading pathways while maintaining robust interlayer coupling. Consequently, the SiC/SiO 2 NFM-7L exhibits an overall reflectivity exceeding 90% at 1080 nm together with pronounced thermal anisotropy. Among the tested configurations, the membrane delivers the best performance: after 120 s of continuous irradiation at 21.9 kW/cm 2 , it remains structurally intact and limits the rear-surface temperature to below 400 °C, effectively protecting the underlying substrate. This work establishes a scalable photothermal architecture that can be extended to other ceramic nanofiber systems, providing a platform for designing multifunctional protective materials under extreme laser-thermal environments.
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高影响因子
Journal of Energy Chemistry
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2024
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IF 14
Ming-Hao Guan,Hao-Nan Xu,Jin Liu,Tao Wu,An-Hui Lu
Regulating the intermediates involved in the electrocatalytic nitrate reduction reaction (NO 3 RR) is crucial for the enhancement of reaction efficiency. However, it remains a great challenge to regulate the reaction intermediates through active site manipulation on the surface of the catalyst. Here, a family of n %-Co 3 O 4 /SiC ( n = 5, 8, 12, 20) catalysts with a delicate percentage of Co 2+ and Co 3+ were prepared for NO 3 RR. We found that Co 3+ primarily acts as the active site for NO 3 − reduction to NO 2 − , while Co 2+ is responsible for the conversion of NO 2 − to NH 3 . Moreover, the conversion of these intermediates over the active sites is autonomous and separately controllable. Both processes synergistically accomplish the reduction of nitrate ions to synthesize ammonia. Combining the experimental studies and density functional theory (DFT) calculations, it is discovered the pathway (*NHO→*NHOH→*NH 2 OH→*NH 2 →*NH 3 ) is more favorable due to the lower Δ G value (0.25 eV) for the rate-limiting step (*NO→*NHO). The NH 3 yield rate of 8%-Co 3 O 4 /SiC reached 1.08 mmol/(cm 2 h) with a Faradaic efficiency of 96.4% at −0.89 V versus the reversible hydrogen electrode (RHE), surpassing those of most reported non-noble NO 3 RR catalysts. This strategy not only provides an efficient catalyst for NO 3 RR but also serves as an illustrative model for the regulation of multi-step reaction intermediates through the design of distinct active sites, thereby presenting a new approach to enhance the efficiency of intricate reactions.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Qilin Gu,Han Zhang,Zheng Liang,Junyou Li,Ziyu Wang,Jian Zhou,Zhaoxiang Zhong,Yiqun Fan,Weihong Xing
Preparation of ceramic membranes with narrow pore size distribution are highly desired for the high accuracy separation, while it is rather challenging due to the randomly stacking of ceramic particles especially on macroporous supports. In this work, by screening the particle size and distribution of SiC powders to match with the pore characteristics of the SiC supports, asymmetric SiC membranes with narrow pore size distribution were successfully prepared on reaction-bonded SiC supports with multiple-peak distribution in the range of 0.1-1.5 μm. Three types of SiC powders (P1, P3 and P5) were selected and correspondingly well-dispersed ceramic slurry were formulated. Then, three types of SiC membranes (M1, M3 and M5) with tailored thickness of 20 μm were realized based on the capillary force dominated formation mechanism. Results showed that the M5 membranes showed excellent hydrophilicity (WCA<15°), narrow pore size distribution (distribution factor α<0.88) and the highest water permeance (1476±159 L m -2 h -1 bar -1 ). Besides, it was found that the pore size of SiC membranes became smaller and more uniform with the increasing sintering temperature, originating from the surface oxidation and volume expansion of SiC particles. Three membranes (M1, M3, M5) were used to separate 100 mg L -1 of (lubricated) oil-water emulsion, and the retention rates were all greater than 90% at a lower transmembrane pressure (TMP) of 0.5 bar, meeting the national emission standards of China. This work demonstrates the feasibility of preparing asymmetric membranes with tailored thickness and narrow pore size distribution based on the reaction-bonded SiC supports and their promising application in high-efficient oil-in-water emulsion separation.
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高影响因子
International Journal of Electrochemical Science
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2025
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IF 2.4
Yan Hu,Tao Jiang
The developed wearable electrochemical sensing platform demonstrates significant potential for continuous monitoring of cortisol in human sweat, a key biomarker for evaluating stress and fatigue levels in athletic performance. Utilizing a novel Au-decorated nanocomposite functionalized with β-cyclodextrin-assisted molecular recognition sites, this study outlines a systematic fabrication process where SiC nanoparticles are first oxidized and subsequently decorated with gold nanoparticles, achieving an average Au particle diameter of 5.3 ± 1.2 nm to enhance conductivity and electron transfer kinetics. The incorporation of dual amine-terminated β-cyclodextrin not only improves molecular recognition but also facilitates selective cortisol capture, as evidenced by sensitivity improvements to approximately 1.85 μF per ng/mL over a linear range of 5–45 ng/mL and a limit of detection as low as 2.8 ng/mL. Comprehensive electrochemical evaluations, including cyclic voltammetry, confirm the sensor’s ability to reliably distinguish cortisol from potential interferents, yielding selectivity coefficients between 18.3 and 31.0, with reproducibility demonstrated by relative standard deviations below 4.8 %. Real sweat sample analyses using a standard addition method provided a robust calibration curve (R² = 0.993), confirming effective quantification in complex biological matrices typical of athletic environments. Furthermore, the sensor exhibited excellent mechanical resilience, with a capacitance reduction of only 4 % after 20 bending cycles, and maintained stable performance over 30 days, indicating long-term durability suitable for wearable sports applications. This innovative approach integrates material design, surface chemistry, and device engineering to enable rapid, accurate, and noninvasive monitoring of athlete stress levels, offering a promising avenue for real-time physiological tracking during training and competitive performance.
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2026
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IF 8.2
Wanqiu Chen,Ma Qin,Fei Cheng,Jinghong Qiu,Zongliang Du,Xu Cheng,Haibo Wang,Xiaosheng Du
Developing multifunctional form-stable phase change materials (PCMs) with high energy density and robust environmental adaptability is pivotal for sustainable thermal management. Herein, a facile and scalable “biomass-to-ceramic” strategy is reported to engineer potato-derived silicon carbide (SiC) aerogels as robust scaffolds for n -octadecane-based composites (SiCPCMs). Through sequential hydrothermal gelatinization and in-situ carbothermal reduction, the natural cellular architecture of potato was transformed into a 3D interconnected SiC framework. This rigid ceramic network not only effectively prevents liquid leakage via strong capillary forces but also serves as a highly conductive and dielectric skeleton. Consequently, the optimal SiCPCMs exhibit a high latent heat storage capacity (up to 234.3 J/g) with an impressive encapsulation efficiency of 87.22%. Furthermore, the integration of the SiC aerogel significantly enhances thermal conductivity by 96.40% and achieves a superior solar thermal storage efficiency of 91.51%. The composites also demonstrate excellent electromagnetic interference (EMI) shielding effectiveness of 33.03 dB in the X-band. Building energy simulations further reveal that deploying these SiCPCMs can reduce cooling energy consumption by approximately 42% in representative cities. This work establishes a sustainable paradigm for upcycling agricultural biomass into high-value multifunctional ceramics for next-generation green buildings and electronic protection.
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高影响因子
Journal of Manufacturing Processes
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2026
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IF 7.8
Chenqian Yang,Ce Sun,Peng Chen,Xiaolong Gong,Song Zhang,Meijun Yang,Kai Liu
During laser powder bed fusion (LPBF) of complex structures, different inclined angles are unavoidable to form the curved surfaces or overhangs, which results in step textures and degraded surface performance. Therefore, this study proposes an innovative method based on laser chemical vapor deposition (LCVD) that achieves effective filling of the step gaps in the LPBF-fabricated silicon carbide (SiC) substrates. The effects of deposition temperature and substrate rotation angles on coating morphology, mechanical properties and bonding strength are studied in depth. With the increase of deposition temperature, grains in the step grooves grow faster and the grain size becomes more uniform. As the rotation angle increases, the step gaps decrease, which promotes grain merging to fill the gaps and the growth of (111)-oriented grains. The nanomechanical properties are significantly enhanced, with an elastic modulus of 404 GPa and a hardness of 48.7 GPa. In addition, the critical interfacial adhesion increases from 19.4 N for the 0° substrate to 27.4 N for the 90° substrate, indicating a 41% enhancement with increasing surface step orientation. This study provides a practical solution for improving surface quality in additively manufactured SiC components for high-end applications.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Ying Zhang,Yiqing Zeng,Dong Zou,Zhaoxiang Zhong,Weihong Xing
Silicon carbide (SiC) ceramic membranes offer indispensable advantages for environmental applications particularly at extreme conditions, owing to their unique physical and chemical properties. However, their widespread application has been hindered by complex multistep fabrication processes, such as repeated coating–drying–sintering process, which are time-intensive and costly. To overcome these challenges, this study employed a novel foam–gel casting technique for the single-step fabrication of asymmetric SiC foam ceramic membranes (SiFCMs), integrating the foam support layer and the functional membrane layer simultaneously. Furthermore, in situ -grown mullite whiskers were incorporated to enhance membrane performance. The growth behavior of the mullite whiskers and the formation mechanism of the bilayer structure were thoroughly investigated. By adjusting the foaming agent content and sintering temperature, synchronous control over the microstructure and properties was achieved, enabling precise tuning of porosity (52.35%–75.61%), membrane layer thickness (98–325 μm), and support layer pore size (171–626 μm). The optimized SiFCMs (solid loading: 65–71 wt%) exhibited a remarkable combination of properties: bending strength of 7.1–7.4 MPa, average pore size of 4.98–8.92 μm, and high gas permeance of 332.5–368.7 m 3 m −2 h −1 ·kPa −1 . The membranes also demonstrated excellent interfacial bonding strength and outstanding chemical corrosion resistance. The separation performance of the resulting membrane was characterized by separating submicron particles at 300 °C, achieving 99.99% rejection rate for PM 0.3 . This study establishes an economically viable technical pathway for fabricating high-performance SiC ceramic membranes, thereby laying a solid foundation for meeting the application demands at extreme conditions.
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高影响因子
CERAMICS INTERNATIONAL
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2026
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IF 6
Tianzhan Shen,Cuiyan Li,Haibo Ouyang,Jintao Wang,Leer Bao,Sirui Wu,Yanlei Li,Xinge Niu,Li Wang,Qianqian Chen
To enhance the ablation resistance of C/C-HfC-ZrC-SiC composites at temperatures above 2100 °C, a TiC coating was deposited on the surface of the composites by the molten salt method to achieve pore sealing. The influence of this coating on the ablation behavior of the composites was systematically investigated. When exposed to an oxygen-acetylene flame of 2.4 MW/m 2 for 60 s, the mass ablation rate and linear ablation rate of the TiC-coated composite were only 1.12 mg/s and 0.51 μm/s, respectively. Compared with the uncoated samples (1.64 mg/s and 1.05 μm/s), they were reduced by 32% and 51%, respectively. The excellent ablation resistance can be attributed to the preferential oxidation of the TiC coating to form a continuous liquid TiO 2 layer. This liquid layer significantly reduces the surface heat load through evaporation and heat absorption, lowering the surface ablation temperature by approximately 70 °C. Additionally, the liquid TiO 2 penetrates into the interior of the oxide scale through capillary action and reacts with HfO 2 and ZrO 2 in the matrix, promoting in-situ sintering and forming a dense (HfZrTi)O 2 composite oxide scale with a thickness of approximately 100 μm. The synergistic effect of physical sealing and chemical reaction between the coating and the substrate helps to form a robust self-healing oxide scale, providing effective protection under extreme thermal conditions.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Wei Shi,Xiaojing Liu,Yulei Liu,Dong Li,Xili Tong,Jun Ma,Lu Wang
Development of robust, reactive, and inexpensive catalyst for pollutants abatement with catalytic ozonation is of great significance. Herein, the effect of a robust and easy-recovery catalyst, Fe 2 O 3 /Al 2 O 3 -SiC, for the catalytic ozonation of hardly biodegradable COD (hard COD) in coking wastewater had been explored. Al-O-Si bond formed on modified SiC through the substitution of hydrogen in surficial Si-OH groups by Al 3+ . The Lewis acid sites improved the adsorption of ozone and facilitated the formation of ·OH and O 2 · − . For coking wastewater treatment , the removal ratio of hard COD and the generation speed of hydroxyl radical (R ct ) in the catalytic ozonation process were 71% and 253% higher than those in the ozonation group, respectively. Ozone utilization increased from 0.44 g COD removed/g O 3 in the ozonation group to 1.42 g COD removed/g O 3 in the Fe 2 O 3 /Al 2 O 3 -SiC catalytic ozonation group. In a full-scale application, Fe 2 O 3 /Al 2 O 3 -SiC catalytic ozonation decreased the consumption of O 3 to 60 mg L −1 and decreased the operation cost by 50%. These results provided an approachable way for sharing the extraordinary capacity of ozone for contaminants remediation in industrial applications.
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PubMed
高影响因子
Materials Today Physics
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2022
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IF 11.021
Hua He,Wei Huang,Zhiguang Guo
Facing the problems of fossil energy shortage and solid surface icing, the use of solar energy to remove surface ice accumulation is a promising solution. Here, we propose a superhydrophobic coating with a photothermal effect for anti-icing and de-icing and defrosting performance. We designed the coating using a simple secondary spray method. That is, a bonding substrate (epoxy resin) is first constructed on the glass substrate , then a protective layer (polydimethylsiloxane(PDMS)) mixed with SiC/TiN composite particles is sprayed onto the epoxy resin surface, and finally dried to obtain a photothermal superhydrophobic coating. In this design, the coating shows (I) excellent superhydrophobicity (water contact angle = 155°, sliding angle = 4°), (II) excellent photothermal effect (the surface temperature of obtain coating rapidly rose to 111.8 °C under 1 sun), and (III) good chemical and mechanical stability. As a result, the coating shows excellent anti-icing, de-icing, and defrosting properties. For example, the coating can significantly extend the icing time. In the face of surface frozen water droplets, frost layers, and large areas of ice cover, the coating can rapidly photothermally remove surface ice layers under 40 mW cm −2 light irradiation. As a result, the coating is simple to prepare and has excellent superhydrophobic, photothermal anti-icing/de-icing, and defrosting properties. The study is of great significance for multifunctional applications.
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高影响因子
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