PROGRESS IN ORGANIC COATINGS
·
2026
·
IF 7.9
Bao Guo,Hongjun Kang,Huiyang Zhao,Xinzhi Wang,Yang Li,Songtao Lu
Low-adhesion superhydrophobic coatings have been considered an effective strategy for mitigating dust accumulation on photovoltaic surfaces, while their long-term outdoor stability under ultraviolet irradiation remains a major challenge. In this work, a dense fluorocarbon layer was deposited onto a SiO 2 –ZnO composite coating by magnetron sputtering to construct a transparent and UV-resistant superhydrophobic dust removal surface. The as-prepared SZ/CF coating exhibits a high water contact angle of 162.8°, a dust removal efficiency of 99.14%, and an average transmittance of 89.67%. After 300 h of UV-B accelerated aging, the coating still maintains superhydrophobicity (150.8°) and high dust removal efficiency (97.01%), demonstrating excellent ultraviolet durability. Mechanistic analysis indicates that the formation of a three-dimensional cross-linked fluorocarbon network suppresses photo-oxidation and preserves the integrity of the low-surface-energy interface. This work provides an effective strategy for developing durable transparent superhydrophobic coatings for long-term photovoltaic dust removal applications.
✓ 已验证
DOI
高影响因子
Small
·
2026
·
IF 11.8
Qian Ning,Chengcheng He,Xiaolin Xue,Yan Zhang,Longqing Zhang,Yuhong Liang,Yang Ren,Jing Xu,Xucai Yin
The two-electron oxygen reduction reaction (2e − ORR) provides a sustainable route for green hydrogen peroxide (H 2 O 2 ) synthesis, but the development of p -block metal catalysts that combine high activity with long-term stability remains challenging. Herein, we propose a hierarchical core-shell catalyst, SiO 2 @C/Sn. Mesoporous silicon dioxide (SiO 2 ) serves as a rigid confinement scaffold to effectively suppress the migration and aggregation of Sn nanoparticles. Simultaneously, a conductive carbon layer was in-situ formed on the SiO 2 surface, markedly enhancing interfacial charge transport. Importantly, the interfacial electronic structure of the Sn nanoparticles is moderately tuned by the combined effect of SiO 2 confinement and the continuous electronic interface provided by the carbon layer, thereby maintaining an optimal adsorption-desorption balance for the *OOH intermediate and significantly improving selectivity toward the 2e − pathway. SiO 2 @C/Sn achieves H 2 O 2 selectivity exceeding 97% and a production rate of 16.15 mol·g − 1 ·h − 1 in alkaline media, while 80% selectivity with a yield of 8.13 mol·g − 1 ·h − 1 in neutral media. The catalytic activity shows almost no decay after 100 h of continuous operation. In-situ spectroscopies combined with DFT calculations further reveal that polarization coupling at the SiO 2 -carbon interface induces electronic redistribution that optimizes the electronic states of Sn sites and thereby stabilizes the 2e − reaction pathway.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Weili Shao,Wanli Yue,Libing Ren,Gaohui Fan,Pengqi Shi,Jianxin He,Li Chen
Ceramic nanofiber sponges offer excellent resistance to temperature and corrosion resistance, rendering them suitable for various applications in heat insulation, sound absorption, and high-temperature filtration. However, traditional ceramic nanofibers are difficult to prepare and are inherently brittle at high temperatures, which significantly limits their development. Therefore, this study proposes a method of fabricating SiO 2 /Al 2 O 3 nanofiber (SANF) sponges using sol–gel processing and electrostatically assisted solution blow spinning (E-SBS). The prepared SANF sponges have a low density (10.63 mg cm −3 ), high compressibility, and low thermal conductivity. Moreover, they have excellent flexibility at − 196 ∼ 1300 °C, a strain-independent zero Poisson’s ratio, and good compression resilience without structural damage. Furthermore, with their low thermal conductivity (0.026 W m −1 K −1 ) and has good interception efficiency (> 99.3 %) against particles of different diameters at 1000 ℃. After undergoing electrostatic removal treatment, the SANF sponge demonstrates remarkable performance stability, maintaining filtration efficiency above 98 % while achieving an exceptional dust holding capacity of 101.2 g m −2 through 40 days of continuous operation. This breakthrough performance represents a significant advancement over conventional nanofiber membrane materials, which have historically suffered from limited dust retention capabilities. We prepared SANF sponges are promising candidates to replace existing thermal insulation and high temperature filtration materials, providing new insights for the development of next-generation thermal insulation and high temperature filtration materials.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 4
Tu Feng-Yuan,Wang Ming-Feng,Zhong Gang,Qiao Hua-Wei,Zheng Bo-Tuo,Liu Can-Pei,Chen Ming-Feng,Zhang Hua-Gui
Compatibilization is crucial for the blending of immiscible polymers to develop high-performance composites; however, traditional compatibilization by copolymers (pre-made or in-situ generation) suffers from weak interface anchoring, and inorganic particles have gained extensive attention recently owing to their large interfacial desorption energy, while their low affinity to bulk components is a drawback. In this study, an interfacial atom transfer radical polymerization (ATRP) technique was employed to grow polystyrene (PS) and poly(2-hydroxyethyl methacrylate)(PHEMA) simultaneously on different hemispheres of Br-functionalized SiO 2 nanoparticles to stabilize a Pickering emulsion, whereby a brush-type Janus nanoparticle (SiO 2 @JNP) was developed. The polymer brushes were well-characterized, and the Janus feature was validated by transmission electron microscope (TEM) observation of the sole hemisphere grafting of SiO 2 -PS as a control sample. SiO 2 @JNP was demonstrated to be an efficient compatibilizer for a PS/poly(methyl methacrylate) (PMMA) immiscible blend, and the droplet-matrix morphology was significantly refined. The mechanical strength and toughness of the blend were synchronously enhanced at a low content SiO 2 @JNP optimized ~0.9 wt%, with the tensile strength, elongation at break and impact strength increased by 17.7%, 26.6% and 19.6%, respectively. This enhancement may be attributed to the entanglements between the grafted polymer brushes and individual components that improve the particle-bulk phase affinity and enforce interfacial adhesion.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Ke Zhang,Yijie Su,Guiyun Wang,Daolai Sun,Satoshi Sato
Vapor-phase dehydration of 1,2-propanediol to form propanal was performed over H 3 PO 4 /SiO 2 catalyst with Brønsted acid sites, which exhibited a high activity for the formation of propanal , and the successive modification of H 3 PO 4 /SiO 2 by WO 3 and Ag could further improve both the activity and the stability of catalysts. The H 3 PO 4 /SiO 2 catalyst modified by both Ag and WO 3 could provide a propanal selectivity of 94.6% with a complete conversion of 1,2-propanediol in an H 2 flow at 250 °C and a weight hourly space velocity of 2.70 h −1 . Brønsted acid sites were effective for the formation of propanal, and the doping of WO 3 could significantly increase the amount of Brønsted acid sites, resulting in the improvement of catalytic activity. On the other hand, the doping of Ag could protect the Brønsted acid sites and inhibit coke deposition on the catalyst surface in an H 2 atmosphere, leading to the improvement of catalyst stability.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 13
·7644-7653
·
IF 10.733
Jingyi Wu,Na You,Xiongwei Li,Hongxia Zeng,Shuai Li,Zhigang Xue,Yunsheng Ye,Xiaolin Xie
This study introduces an improved design of interlayers to achieve a balance between high Li+ diffusion and polysulfide inhibition in lithium–sulfur batteries. The design involves encapsulating mesoporous SiO2 nanospheres in few-layer MoS2 nanosheets via a facile one-step self-assembly to form a core–shell nanocomposite (SiO2@MoS2). The SiO2@MoS2 layer overlaid on a sulfur cathode simultaneously intercepts polysulfides and ensures rapid Li+ diffusion. Few-layer MoS2 as the shell is capable of breaking up polysulfides by a catalytic reaction, while mesoporous SiO2 as the core allows for physiochemical adsorption of such species; moreover, the densely packed hermetic SiO2@MoS2 nanocomposite layer provides an additional physical shield against polysulfide diffusion, realizing the full protection of the whole cathode. At the same time, the high Li+ density in the nanolayered MoS2 shell and the additional Li+ pathways created by the mesoporous SiO2 core allow for fast Li+ diffusion. Thus, a pristine sulfur cathode battery with a SiO2@MoS2 interlayer exhibits an outstanding electrochemical performance with a negligible capacity decay of 0.028% per cycle over 2500 cycles. The core–shell design suggested in this study could be extended to other nanomaterials for the optimization of Li–S battery interlayers.
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Xiaofang Wen,Hongcan Lou,Zheng Li,Jiehao Xie,Zirui Qin,Xingkun Chen,Yuan Tan,Nian Lei,Wei Lu,Yunjie Ding
The development of efficient catalysts for the selective hydrogenation of dimethyl oxalate (DMO) to high-value oxygenates is of great industrial importance. This study presents a systematic investigation into the promotional effect of gallium (Ga) on Cu/SiO 2 catalysts for tailoring product selectivity in DMO hydrogenation. A series of Ga x Cu 30 /SiO 2 catalysts with varying Ga loadings (x = 0.5, 1, 3 wt%) were synthesized via the ammonia evaporation method. With a moderate Ga doping of 0.5 wt%, the Ga 0.5 Cu 30 /SiO 2 catalyst achieved an exceptional ethylene glycol (EG) yield of 74 %, which is three times higher than its Ga-free counterpart (23 %). Further increases in Ga loading to 1 and 3 wt% redirected the reaction pathway, steering the selectivity towards ethanol (ET, 81 %) and 2-methoxyethanol (MT, 54 %), respectively. Characterization by N 2 O titration, XRD, XPS, in situ FT-IR and H 2 -TPR revealed that Ga incorporation fine-tunes the synergy between metallic Cu 0 (for H 2 dissociation) and Cu + sites (for C=O bond polarization). Concurrently, the generated surface acid sites facilitate subsequent dehydration and hydrogenolysis steps. Consequently, the catalytic performance is directly correlated with the evolution of Cu valence states and surface acidity. This work provides a rational strategy for designing multifunctional catalysts for the selective synthesis of target chemicals from DMO.
✓ 已验证
产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2016
·Vol. 27
·期 23
·235601
·
IF 3.573
Fang Zhou,Bin Zheng,Ying Zhang,Yudong Wu,Hanjie Wang,Jin Chang
Combined therapy now plays a major role in cancer therapy due to the outcome of huge amounts of scientific experiments in recent years. However, all systems designed previously have been unable to simultaneously deliver therapy effects using several methods to produce a greater overall therapeutic effect. To solve the problem, we constructed a delivery system of near-infrared light (NIR)-triggered reactive oxygen species (ROS)-sensitive nanoparticles (NPs) for simultaneous chemotherapy and photodynamic therapy (PDT). The inner NP was assembled from a hydrophobic upconverting nanoparticle (UCN) core, with a thin silica shell linked with rose bengal (RB). Finally, a type of ROS-induced biodegradable polymer named poly-(1, 4-phenyleneacetone dimethylenethioketal) (PPADT) was self-assembled to form the NP as an outer shell to load the inner NP and doxorubicin (DOX). As the results show, the UCN core works as a transducer to convert deeply penetrating NIR to visible light for activating the photosensitizer RB for PDT under NIR excitation. In the meantime, the redundant ROS caused PPADT to biodegrade to release the loaded DOX, realizing simultaneous chemotherapy and PDT. Properties such as structure, size distribution, morphology, Fourier transform infrared spectroscopy, ROS production test, cell uptake test and combined therapy treatment effect in vitro were evaluated to prove NIR triggered ROS-sensitive (UCN/SiO2-RB + DOX)@PPADT NPs. Based on our data, this delivery system could provide an effective means to realize simultaneous chemotherapy and PDT through external NIR-triggered ROS sensitivity.
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Weiwei Zhang,Dongqin Ye,Jingcheng Zheng,Yuwu Chi
Determination of the solvent polarity is important across various scientific and industrial fields. Classic empirical parameters for evaluating solvent polarity, such as Rohrschneider–Snyder parameters (P′), Reichardt’s ET(30), Kamlet–Taft parameters, dielectric constant (ε) measurement, and Hansen solubility parameters (HSPs) often suffer from complicated instrumentation and measurement operation, which seriously limits their applications in real-time and fast determination and selection of unknown solvent polarity. In this work, we utilize recently emerging perovskite quantum dots (PQDs) with extremely high fluorescence quantum yield, high sensitivity to solvent polarity, and facile preparation and surface engineering to to develop a visualized and disposable solvent polarity sensor based on dual-fluorescent PQDs@SiO2/Ru(bpy)32+@SiO2 (PQDs@SiO2/Ru(II)@SiO2) nanocomposites. Among the nanocomposites, the components of PQDs@SiO2 are stable in nonpolar solvents but not stable in polar solvents due to degradation. Meanwhile, the component Ru(bpy)32+ is stable in both polar and nonpolar solvents, giving a constant red background fluorescence. Therefore, when inserting the glass slide loaded with PQDs@SiO2/Ru(II)@SiO2 nanocomposites into a nonpolar solvent, it retainss green light emission since the fluorescence quantum yield of PQDs is much larger than that of Ru(bpy)32+. In contrast, when the glass slide contacts with polar solvents, its fluorescence color will change from green to yellow, then orange, and finally to red due to the instability of PQDs in this case. The complete color change time from initial green to final red (tccc) was proposed as a new type of solvent polarity parameter. This work not only provides an empirical parameter for evaluating solvent polarity but also opens up an avenue for detecting solvent polarity using functional nanomaterial.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yue Tang,Baoyu Li,Bin Wan,Hejun Gao,Hongquan Fu,Jinming Chang,Fang Liao,Juan Zhang,Yunwen Liao
Catalytic hydrogenation, balancing efficiency, selectivity, and sustainability, is a cornerstone of chemical synthesis. However, cobalt catalysts, despite their reactivity, suffer from thermal instability at high temperatures. To address this challenge, we herein propose a facile strategy integrating adsorption, high-temperature calcination-reduction, and encapsulation: The silica rich in oxygen-containing functional groups is used to adsorb cobalt ions for synthesizing Co 3 O 4 /SiO 2 , followed by pyrolysis of nitrogen-containing polymers to fabricate carbon-encapsulated Co/SiO 2 @NC catalysts with strong metal-support interactions (SMSI). The catalyst features uniformly distributed cobalt nanoparticles (13 nm) embedded within a nitrogen-doped carbon layer, demonstrating high activity (apparent rate constant k s = 0.013 m −2 h −1 ) and structural stability in quinoline hydrogenation. This low-cost approach opens a new avenue for the practical utilization of cobalt-based catalysts. The nitrogen-doped carbon materials not only serve as adsorption sites for quinoline but also stabilizes cobalt nanoparticles via pyridinic nitrogen on its surface with hydrophobic sites. The cobalt nanoparticles act as active sites for catalytic hydrogenation, while hydrogen dissociation is identified as the rate-determining step. Pyridinic nitrogen atoms on the Co/SiO 2 @NC are electron-deficient, while cobalt nanoparticles are electron-rich. Kinetics show first-order dependence on H 2 and zero-order on quinoline, with enhanced hydrophobicity boosting activity. This work advances cobalt catalyst design through nanostructure control, optimized metal-support interactions, and efficient electron transfer, providing a blueprint for next-generation hydrogenation catalysts.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Tianyu Zhang,Dong Han,Wenkang Yi,Zhihong Wang,Ruina Ma,An Du,Yongzhe Fan,Xue Zhao,Xiaoming Cao
Achieved coatings exhibiting coexistence of crystalline and amorphous SiO 2 phases. • Revealed the three-dimensional distribution and phase composition of coating pores. • Elucidated the mechanism by which SiO 2 coatings influence thermal management performance. • I corr is reduced by more than two orders of magnitude compared to the matrix. This study addresses the insufficient thermal stability and corrosion resistance of 7075 aluminium alloy by employing staged voltage-boosted plasma electrolytic oxidation (PEO) technology to fabricate an ultra-thick composite coating containing amorphous/crystalline SiO 2 within an organosilicon electrolyte. The system investigated the regulation mechanisms of duty cycle on coating phase composition, microstructure, thermal control performance, and corrosion resistance. Utilising advanced characterisation techniques such as Grazing Incidence X-Ray diffraction, X-ray computed tomography, and X-ray photoelectron spectroscopy, its underlying mechanisms were elucidated. By modulating energy input, the duty cycle significantly influenced coating growth, achieving a maximum thickness of 181.76 μm-far exceeding conventional PEO coating thickness levels. XCT analysis revealed the phase distribution and pore characteristics of the coating at a 20% duty cycle. Pores with diameters between 0 and 5 μm constituted the highest proportion (approximately 68.85%), while interconnected pores exceeding 30 μm in diameter dominated the total pore volume. Optimal thermal management performance was observed at a 30% duty cycle (absorptance 0.36, emissivity 0.89), confirming a critical thickness threshold (130 μm) and the pivotal role of amorphous SiO 2 . Corrosion resistance peaked at a 10% duty cycle, with corrosion current density reduced to 2.368 × 10 −8 A·cm −2 , representing a near two-order-of-magnitude decrease compared to the substrate. Download: Download high-res image (349KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Yajie Liu,Huaqiang He,Tie-Jun Zhang,Tian C. Zhang,Yuan Wang,Shaojun Yuan
It is highly attractive to develop highly efficient oil-in-water (O/W) emulsion separation technologies for promoting the oily wastewater treatment . Herein, a novel inversely Stenocara beetle -like hierarchical structure of superhydrophobic SiO 2 nanoparticle-decorated CuC 2 O 4 nanosheet arrays were prepared on copper mesh membrane by bridging polydopamine (PDA) to make a SiO 2 /PDA@CuC 2 O 4 membrane for substantially enhanced separation of O/W emulsions. The superhydrophobic SiO 2 particles on the as-prepared SiO 2 /PDA@CuC 2 O 4 membranes were served as localized active sites to induce coalescence of small-size oil droplets in oil-in-water (O/W) emulsions. Such innovated membrane delivered outstanding demulsification ability of O/W emulsion with a high separation flux of 2.5 kL⋅m −2⋅ h −1 and its filtrate’s chemical oxygen demand (COD) being 30 and 100 mg⋅L −1 for surfactant-free emulsion (SFE) and surfactant-stabilized emulsion (SSE), respectively, and also exhibited a good anti-fouling performance in cycling tests. The innovative design strategy developed in this work broadens the application of superwetting materials for oil-water separation and presents a promising prospect in practical oily wastewater treatment applications.
✓ 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）