ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Lu Zhang,Beibei Huang,Jiawei Du,Zhaohan Yu,Qikuan Cheng,Yuchen Cai,Yunming Wang,Huamin Zhou
Low-frequency sound waves in marine environments present a substantial challenge to underwater equipment due to their high penetration capability. To address this issue, a novel energy dissipation and sound absorption mechanism based on resonant-driven piezoelectric core–shell structures is proposed, and fabricate corresponding underwater acoustic absorption components. The design integrates mechanically responsive piezoelectric core–shell materials into an energy dissipation network, enabling efficient conversion of mechanical energy into electrical energy, followed dissipated as heat. Structural and morphological analyses confirm that the piezoelectric particles are encapsulated within a silicon-based shell featuring an internal cavity. This sophisticated architecture facilitates multiple energy dissipation pathways, significantly enhancing the acoustic performance of the composite. The optimized components exhibit a remarkable loss factor of 1.76 and achieve a sound absorption coefficient of 0.8 at 1 kHz, representing a 135% improvement over pure resin. Furthermore, the composite demonstrates exceptional structural stability under high pressure, with minimal deformation (1.47%) at 5 MPa, equivalent to depths of 500 meters. This study establishes a viable strategy for designing high-performance underwater sound-absorbing materials, offering promising potential for practical applications in marine noise mitigation.
研究领域:
材料科学
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声学工程
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海洋技术
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功能材料
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结构力学
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能源转换
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
·
IF 5.4
Haiyang Zhang,Youqiang Wang,Guijing Guo,Ying Xu,Jianze Liu,Haoran Guo,Kai An
Photothermal superhydrophobic surfaces have garnered significant attention for their exceptional anti-icing and photothermal deicing capabilities. However, the shortcomings of stability and fabrication complexity limit their practical application. This work designed and fabricated a SiO 2 /HWCNTs@EP composite coating that combines robust stability, anti-icing/deicing performance, and facile preparation. During fabrication, the SiO 2 and HWCNTs ratio was systematically optimized by evaluating wettability, photothermal conversion capability, and anti-icing/deicing performance. The composite coating in the ratio of SiO 2 /HWCNTs 1:1 exhibited a water CA of 156.7°, demonstrating superhydrophobicity. HWCNTs assemble to form nano-papillary structures on the surface of SiO 2 particles, generating hierarchical micro/nano structures that enable exceptional light absorption. Photothermal testing revealed a maximum temperature increase of 69 °C (reached in 360 s) under one sun intensity. The composite coating demonstrated a prolonged droplet freezing time of 1026 s at −15 °C. Photothermal deicing testing achieved complete ice melting and detachment within 44 s. Notably, the composite coating retained its superhydrophobicity after mechanical abrasion, chemical corrosion, and high-temperature testing, attributed to uniform nanofiller dispersion and dense interactions within the epoxy resin, ensuring exceptional stability. This work provides novel insights for designing stable photothermal superhydrophobic coatings with dual anti-icing/deicing functionality, contributing to the development of energy-efficient ice mitigation technologies.
研究领域:
材料科学
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表面工程
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纳米技术
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应用物理
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化学工程
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产品关联
DOI
高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·892
·
IF 4
Zhen Li,Kwang Leong Choy
Electrocatalytic CO2reduction driven by renewable electricity offers a sustainable approach to producing valuable chemicals, though it is often hindered by low activity and selectivity. CuO, an important transition metal oxide, exhibits unique advantages in photoelectrocatalysis due to its high intrinsic catalytic activity and ability to serve as an active site for CO2reduction. SiO2, a widely used substrate, facilitates Cu loading and increases the specific surface area of the catalyst. Meanwhile, g-C3N4provides excellent visible-light responsiveness and efficient charge carrier mobility. Together, CuO, SiO2, and g-C3N4are earth-abundant, low-cost, and chemically stable, making them ideal for solar-to-fuel applications. Here, a novel ternary heterojunction photocatalyst was constructed using SiO2, CuO, and g-C3N4. The heterostructure significantly improves light-harvesting efficiency, promotes efficient charge separation and transport, and simultaneously mitigates photogenerated carrier recombination and catalyst corrosion. The resulting SiO2@CuO/g-C3N4catalyst demonstrates outstanding CO2conversion performance, achieving a CO yield of 17 mmolg−1h−1at 1.2 VRHEwith nearly 100% selectivity. Moreover, this work systematically investigates the electrocatalytic CO2reduction reaction (CO2RR) mechanism on Cu-based catalysts, offering insights into the formation of high-value multicarbon products and highlighting the potential of rational heterojunction design in enhancing solar-driven fuel production efficiency.
研究领域:
材料化学
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环境催化
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能源化学
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纳米材料
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光化学
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可持续能源
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电催化
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产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
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2024
·
IF 5.3
Xue Zhang,Linwei Peng,Siyuan Ye,Zhuohan Lin,Yan Li
Inorganic oxide especially SiO 2 encapsulation strategy is an effective way to improve the stability of all-inorganic cesium lead halide perovskite (CsPbX 3 , X = Cl, Br, I) nanocrystals (NCs). However, when CsPbX 3 NCs are encapsulated in SiO 2 by in situ tetraethyl orthosilicate (TEOS) hydrolysis, the unavoidable by-products (water and ethanol) of TEOS hydrolysis commonly damage the structural and optical properties of the CsPbX 3 NCs. Herein, TDPA-CsPbBr 3 NCs with the dense tetradecylphosphonic acid (TDPA) passivation were pre-prepared and subsequently encapsulated into SiO 2 via in situ TEOS hydrolysis. Benefitting from the dense phosphonic passivation layer capable of resisting the erosion of polar by-products generated by TEOS hydrolysis, the obtained TDPA-CsPbBr 3 @SiO 2 nanocomposites maintain the excellent optical properties of the colloidal CsPbBr 3 NCs, showing near-unity photoluminescence quantum yield (PLQY) and ultra-narrow full width at half maximum (FWHM). Furthermore, the TDPA-CsPbBr 3 @SiO 2 nanocomposites exhibit outstanding stability against ethanol, UV light, and heating treatment due to the dual protection of dense phosphonate ligand layers and inorganic SiO 2 matrix. The white light-emitting diodes (WLED) device was fabricated by sequentially depositing green-emitting TDPA-CsPbBr 3 @SiO 2 nanocomposites and red-emitting K 2 SiF 6 :Mn on blue-emitting GaN LED chip. The obtained WLED exhibits excellent luminous performances with standard white emission of CIE Coordinates (0.33, 0.33), a color gamut 138 % of the NTSC and 103 % of Rec. 2020, respectively. This study demonstrates that TDPA-CsPbBr 3 @SiO 2 nanocomposites have a potential application in solid-state lighting and backlight displays.
研究领域:
材料科学
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光学工程
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Hairong Wu,Kunpeng Hou,Guorui Xu,Genglin Li,Jiawei Chang,Tianfang Luan,Wenhao Shao,Jirui Hou
The CO2-responsive Pickering emulsions employed have garnered considerable attention across enhanced oil recovery agents, delivery of crude, and oilfield-produced fluid treatment. This study focuses on the design of an innovative type of Janus nanoparticle (JNP) and its application in the construction of CO2 stimuli-responsive Pickering emulsions. The emulsion stabilized by JNPs demonstrates swift phase separation subsequent to the injection of CO2. Furthermore, the mechanism of the CO2-stimulated responsiveness enabled by the JNPs was proposed. Based on the Schiff reaction, the synthesis of JNPs was achieved successfully via the Pickering emulsion template method. The properties of the JNPs were studied using various analytical techniques such as Fourier transform infrared, thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, etc. The developed responsive system, composed of JNPs and sodium oleate surfactant, showed high interfacial activity at the oil/water interface. The study revealed that the responsive system-stabilized Pickering emulsions could remain stable at 70 °C and room temperature for 24 and 120 h, respectively. Furthermore, the introduction of CO2 for 1.5 min resulted in phase separation because the nanoparticles lost the amphiphilic nature, triggering a significant decrease in interfacial activity and the protonation of sodium oleate surfactant inactivation. Then, the particles started to desorb from the interface. This study proposes a convenient, simple, and cost-effective approach for preparing fast CO2-responsive Pickering emulsions. It provides novel insights into the advancement of oilfield-produced fluid treatment, transportation of crude oil, and enhanced oil recovery.
研究领域:
化学工程
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材料科学
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石油工程
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产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Penggang Wang,Chenglong Li,Zhenxing Du,Li Tian,Zhiyu Yuan,Hua Fu,Weichao Li,Shuo Jiang
This study investigates the enhancement of self-healing properties in cementitious materials through the integration of nano-SiO 2 (NS)-modified ethyl cellulose (EC) microcapsules (MC). By utilizing an organic-inorganic hybridization approach, we created a stable three-dimensional cross-linked structure composed of NS and EC, resulting in a controllable system that enhances the triggering efficiency of the microcapsules. Comprehensive microscopic characterization of the material composite MC was performed, encompassing evaluations of morphology, elemental composition, chemical structure, and particle size. The results demonstrate that the incorporation of NS significantly increases both the surface roughness and particle size of the MC, thereby improving mechanical interlocking with the cement matrix. Optimal self-healing performance was observed with an NS content of 6 % of EC, achieving an impressive compressive strength recovery rate of 151.2 % under pre-damage conditions corresponding to 80 % σ max . Moreover, the pore healing rate also peaked at this NS concentration, highlighting a synergistic effect on the self-healing capabilities of the cementitious composites. Furthermore, observations regarding crack healing confirm that the self-healing mortar formulated with NS-modified MC demonstrates superior crack closure performance compared to unmodified MC. These findings highlight the positive correlation between NS content and enhanced self-healing capabilities, offering valuable insights for the advancement of self-healing systems in cement-based materials.
研究领域:
建筑材料
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材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinwen Ma,Weiduo Fei,Jiaming Liu,Xiandie Zhang,Jie Ji,Xiang Zhou
In this study, highly reactive silicon nanoparticles (h-Si) were successfully prepared by an improved magnesiothermic reduction process with ∼ 100 nm mesoporous silica nanoparticles as templates. The prepared h-Si have an average particle size of 18 nm, an active content of 85 %, and a specific surface area of 69.2 m 2 /g. Meanwhile, the preparation process is simple, green (avoiding the use of HF), and shows a great improvement in the inhibition of side reactions. The energetic characteristics of h-Si were compared with those of commercially available silicon nanoparticles (c-Si) by using ultrasonically mixed KClO 4 as the oxidizer. Thermal analysis indicates that h-Si/KClO 4 has an advanced reaction onset temperature, increased heat release, and lower reaction activation energy. In constant-volume combustion tests, h-Si/KClO 4 shows excellent ignition and combustion characteristics in the fuel-rich state. In addition, electrostatic discharge sensitivity tests indicate that the minimum ignition energy of stoichiometric h-Si/KClO 4 exceeds 100 mJ, which is much more insensitive than that of n-Al/KClO 4 (∼2 mJ). Overall, h-Si show enhanced reactivity and have attractive advantages in applications where suitable combustion properties and low electrostatic sensitivity are required.
研究领域:
材料科学
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化学工程
·
燃烧与爆炸
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产品关联
DOI
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Zhu-yu Li,Sheng Li,Le-ran Li,Qi Niu,Kai Li,Bin Hu,Qiang Lu
Thermochemical energy storage can overcome the drawbacks such as instantaneity, instability, and the incongruity between supply- and demand-side in the utilization of renewable energy. CaCO 3 /CaO is regarded as a promising material for thermochemical energy storage, whereas its stability still requires urgent improvement. In this paper, a new Al 2 O 3 and SiO 2 co-doped calcium-based material derived from eggshell (ES) was prepared for efficient heat storage. The physicochemical properties of synthesized materials were systematically analyzed. The regulation mechanisms of Al 2 O 3 and SiO 2 additions on the cyclic characteristics of heat storage materials were investigated by a thermogravimetric analyzer. The results displayed that ESCa-2.5Si2.5Al, prepared with a mass ratio of ES: Al 2 O 3 : SiO 2 = 95: 2.5: 2.5, demonstrated outstanding specific surface area of 14.64 m 2 /g and pore volume of 0.080 cm 3 /g, which were 2.74 and 5 times greater than those of ES-based CaO (ESCa), respectively. Meanwhile, SiO 2 and Al 2 O 3 could react with CaO to form Ca 3 Al 2 O 6 and Ca 2 SiO 4 , their synergistic effect could efficiently improve the sintering resistance of CaO. Therefore, ESCa-2.5Si2.5Al possessed excellent cyclic stability. Its initial energy storage density was 2273.19 kJ/kg, and the retention ratio reached 72.93 % after 20 cycles, significantly higher than that of ESCa (19.35 %). In addition, compared with ESCa, the heat storage temperature of ESCa-2.5Si2.5Al decreased from 792 °C to 778 °C, and its carbonation rate only slightly attenuated over 20 cycles, enabling rapid heat storage at lower temperatures and stable heat release.
研究领域:
材料科学
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能源工程
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产品关联
DOI
高影响因子
BULLETIN OF MATERIALS SCIENCE
·
2024
·Vol. 48
·期 1
·1-12
·
IF 1.9
WU YIFAN,PAN YANGFAN,GUO JUNXIA,MENG YONGQIANG,HUANG HONGJUN
Silicon dioxide (SiO 2 ) is considered to be a promising material for thermal insulation. However, the application scenarios of insulation materials are limited, and how to enhance their practical application value has been an attractive research topic. In this work, SiO 2 nanofibres were prepared by the electrospinning technology. Effects of different heat-treatment parameters on SiO 2 crystal transformation, nanofibres’ diameter and thermal conductivity were investigated, and the thermal-insulation mechanism of SiO 2 nanofibres was further studied. Results of the study show that the heat-treatment process has a significant effect on nanofibre diameter, which affects thermal conductivity. When the heat-treatment temperature is 900°C, the heating rate is 8°C min −1 and holding time is 2 h, the diameter of SiO 2 nanofibres is the finest, and thermal conductivity is the lowest (0.039 W mK −1 ). In addition, nanofibres is demonstrated as functional fillers of thermal-insulation coating, which exhibit excellent thermal insulation and mechanical properties. This study can provide a certain reference value for the development of new lightweight and functional thermal-insulation fillers.
研究领域:
材料科学
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热能工程
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE IONICS
·
2025
·
IF 3.3
Jie-Fu Zhuo,Zhi-Feng Yao
The argyrodite-type sulfide electrolytes (Li 6 PS 5 X, X = Cl, Br, I) have demonstrated numerous benefits for high-performance and secure all-solid-state lithium‑sulfur batteries (ASSLSBs). These advantages include their rapid lithium (Li) ion conduction and exceptional compatibility with the anode. Nevertheless, despite these benefits, the key obstacles for their implementation are the need for higher room-temperature ionic conductivity, improved air/moisture compatibility, and enhanced electrochemical stability. In this study, we propose a halogen-rich argyrodite (Li 5.3 PS 4.3 Cl 1.7-x Br x ) to obtain ultrafast ionic conductivity at ambient temperature. To enhance the ionic transport channel, the anion disorder on the site is optimized and the Li vacancies in the structure are increased by substituting anions with halogens (Cl/Br). The Li 5.3 PS 4.3 Cl 0.85 Br 0.85 is synthesized effectively by a high-energy ball milling process, resulting in a remarkable ionic conductivity of 9.07 mS⋅cm −1 at room temperature. In addition, a SiO 2 dopant is utilized to strengthen the lattice structure of the solid-state electrolyte (Li 5.3+y Si y P 1-y S 4.3-2y O 2y Cl 0.85 Br 0.85 ) in order to improve its resistance to air/moisture and enhance its electrochemical stability within specific voltage ranges. The Li 5.4 Si 0.1 P 0.9 S 4.1 O 0.2 Cl 0.85 Br 0.85 with optimized composition demonstrates an ionic conductivity of 8.2 mS⋅cm −1 at room temperature and exceptional stability in air. The ASSLSBs containing Li 5.4 Si 0.1 P 0.9 S 4.1 O 0.2 Cl 0.85 Br 0.85 exhibit impressive specific capacities of 1191 mAh⋅g −1 (0.1C after the initial cycle) and 989 mAh⋅g −1 (0.1C after 100 cycles) at room temperature. Additionally, they demonstrate significant cyclability (83.04 % after 100 cycles) and excellent Coulombic efficiency (>99.5 %). This study presents a novel strategy to promote the application of sulfide electrolytes in fabricating ASSLSBs.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Yinghao Bi,Xiyao Luo,Yuxin Yin,Fengjie Tang,Haodong Sun,Liulian Huang,Lihui Chen,Jianguo Li
Passive radiative cooling material of cellulose by coupling inorganic nanoparticles , have demonstrated competitive advantages in sustainably cooling buildings and constructions due to their voluminous availability, biodegradability, renewability, and natural origin. However, the weak stability of cellulose-inorganic nanoparticle materials when exposed to water or external forces remains a significant challenge that impedes their practical application. In this study, we proposed an easy-to-prepare, scalable, and robust cooling cellulose composite by coupling nano-SiO 2 and cellulose acetate (CA) within cellulose fibers , using the mature pulping and paper process (filling of inorganic particles of nano-SiO 2 and subsequent sizing of polymer of CA). More importantly, the CA molecules form the strong bonding with the cellulose molecules due to the high similarity of their molecular structure, which makes CA function as a “glue” to effectively fasten nano-SiO 2 on the cellulose fibers. Correspondingly, our cellulose composite features desirable robustness and structural stability even undergoing mechanical beating and water-soaking treatments, demonstrating its excellent robustness and desirable adaptability to natural environments, such as wind and rain. As a result, despite undergoing water-soaking (for 40 days) or environmental exposure (for 90 days), the cooling cellulose composite still exhibits excellent solar reflectance (>95 %) and infrared thermal emissivity (>0.95 at 8–13 μm), enabling sub-ambient temperature (∼6.5 °C during daytime and ∼8 °C at nighttime) throughout the day. Our cooling cellulose composite demonstrates promising potential as an environmentally friendly, low-cost, and stable cooling material in our low-carbon society.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DYES AND PIGMENTS
·
2024
·
IF 4.1
XiaoHua Cheng,Shuai Peng,Zhengfei Tan,Yahui Zhou,Huiyu Yang,Bo Deng
Structural color is an important way to achieve the ecological coloring of textiles. SiO 2 microspheres with sizes in the range of 200–337 nm were synthesized by the Stober method and then covered with highly light-absorbing melanin PDA to form SiO 2 @PDA photonic crystals. The SiO 2 @PDA photonic crystals were assembled onto the surface of white cotton fabrics by gravity deposition to achieve structural color. The addition of polyvinylpyrrolidone (PVP) enhances interfacial bonding by forming multiple hydrogen bonds between its lactam group and the phenolic hydroxyl group of PDA, resulting in a structured color cotton fabric with high color fastness. Scanning electron microscopy (SEM) was used to study the structure and morphology of SiO 2 @PDA microspheres. The chemical compositions of PDA and PVP were surveyed by Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The surface structural color of cotton fabrics was investigated by UV–Vis reflectance spectroscopy.
研究领域:
材料科学
·
纺织工程
·
生态学
✓ 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）