JOURNAL OF LUMINESCENCE
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2020
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IF 3.28
Chunxia Wu,Hongxiang Zhang,Shouzhi Wang,Wei Wang,Jun Dai
In this paper, we report a simple one-pot strategy to synthesize highly stable SiO 2 -coated orange-yellow CsPb 0.7 Mn 0.3 Br 0.75 Cl 2.25 quantum dots with strong orange-yellow photoluminescence . The microstructure characterization indicates that the CsPb 0.7 Mn 0.3 Br 0.75 Cl 2.25 quantum dots were effectively encapsulated by the SiO 2 . The SiO 2 -coated CsPb 0.7 Mn 0.3 Br 0.75 Cl 2.25 quantum dots show higher humidity stability and thermal stability than the CsPb 0.7 Mn 0.3 Br 0.75 Cl 2.25 quantum dots without SiO 2 coating. The white light-emitting diodes (WLEDs) were obtained by coating orange-yellow CsPb 0.7 Mn 0.3 Br 0.75 Cl 2.25 @SiO 2 and blue CsPbBrCl 2 @SiO 2 quantum dots on the ultraviolet gallium nitride light-emitting diode chip. The as-prepared white light-emitting diodes show bright white light emission with a color coordinate of (0.3347, 0.2825), color rendering index of 82 and correlated color temperature of 5329 K. The results provide a simple method to fabricate stable orange-yellow luminescent material for white light-emitting diodes.
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高影响因子
Journal of Cleaner Production
·
2020
·
IF 7.246
Hao Yin,Jie Zhao,Yuqi Li,Liulian Huang,Hui Zhang,Lihui Chen
A multifunctional and flexible Pd decorated Polydopamine-SiO 2 /PVA electrospun nanofiber membrane was developed by a facile, green, one-step reduction and fixation strategy for simultaneously removal of multiple pollutants from water. Pd NPs were reduced in a mild and green environment with the deposition of dopamine, avoiding secondary pollution of water. The in situ reduced Pd NPs were evenly distributed and firmly immobilized on the nanofiber membrane, effectively avoids the aggregation, thereby greatly improving the catalytic activity . After a single filtration, the developed membrane can simultaneously remove oils, organic chemicals and dyes from water with a high flux (up to 8000 L m −2 ·h −1 ). The removal efficiency for organic chemicals and oils can reach to 99.9% and the degradation efficiency for dyes (e.g., MB and CR) are also very high, up to 99%. More interestingly, the membrane showed robust mechanical properties and corrosion resistance , that can be used in acidic, alkaline, salty and even hot water environment. Besides, the membrane can be reused for at least 10 separation cycles without a significant reduction in separation efficiency, demonstrating excellent reusability and stability.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Huijie Zhang,Yuqing Xiao,Fei Qi,Pei Liu,Yuan Wang,Fangjie Li,Changlei Wang,Guojia Fang,Xingzhong Zhao
Hexagonal NaYF4:Yb3+,Tm3+@SiO2 upconversion nanoprism-mixed SiO2 passivation layers are introduced into hole-transport-layer free carbon-based perovskite solar cells to improve the power conversion efficiency. This layer on the top of the TiO2 scaffold has multiple functions: (i) upconversion units could transform near-infrared photons to visible region and thus extend the absorption range; (ii) nanoprisms act as light-scattering centers to prolong light-transmission distance and enhance light harvesting; (iii) SiO2 capping layer could suppress charge recombination at the interface of perovskite/TiO2 through passivation effect. The champion efficiency of our carbon-based device with an optimal amount of upconversion nanoprisms is 14.47%, which is 16.1% higher than that of the reference (12.46%). In addition, our unencapsulated solar cells exhibit good stability against moisture and thermal stressing in ambient condition. We also demonstrated another application of our device as a self-powered photodetector with NIR-sensitive features.
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Geoenergy Science and Engineering
·
2024
·
IF 0
Tiantian Zhang,Mingwei Gao,Zhiwen Li,Xiaoyong Wen,Zhiping Li,Lan Wang,Caspar Daniel Adenutsi,Qianru Yang,Qing You
Nanoparticles have been proven to be potential additives for hydraulic fracturing fluid. However, the application of nanoparticle-enhanced fracturing fluid systems in offshore low-permeability reservoirs are limited, and the mechanism by which the corresponding gel breaking fluid enhances oil recovery (EOR) is unclear. In this work, a SiO 2 -enhanced seawater-based viscoelastic surfactant (VES) fracturing fluid system was initially prepared, and the imbibition influencing factors of the SiO 2 -enhanced gel breaking fluid were systematically investigated. Subsequently, the imbibition mechanism by SiO 2 -enhanced gel breaking fluid was explored through examining its synergistic effect on interface properties and the distribution laws of oil-water phases in micropores during the imbibition process. The results showed that proposed system could maintained stability for more than 6 months, and exhibited rheological performance, yielding an increase 26% in temperature/shear resistance. Moreover, the corresponding gel breaking fluid performed an exceptional capacity for imbibition oil production, the oil recovery was increased by 7.92% compared to the conventional gel breaking fluid system and the imbibition time was extended from 30 h to 70 h. The synergistic adsorption of nano-SiO 2 and surfactants on the interface was responsible for wettability alteration and interfacial tension (IFT) reduction. Imbibition primarily occurred in mesopores, nano-SiO 2 reduced the flow resistance of oil-water two phases in pores, and the residual oil within the pores was exceedingly mobilized. This work provides foundation research of application of SiO 2 -enhanced seawater-based VES fracturing fluid in offshore low permeability reservoirs.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 7
·118118
·
IF 6.2
Yifei Yan,Chuanzhen Huang,Zhenyu Shi,Zhen Wang,Longhua Xu,Shuiquan Huang,Meina Qu,Zhengkai Xu,Dijia Zhang,Baosu Guo,Tianye Jin,Xiaodan Wang,Hanlian Liu,Dun Liu,Peng Yao
The fabrication of porous Si 3 N 4 /BN ceramics for high-temperature radomes via vat photopolymerization is hindered by excessive slurry viscosity, which restricts the recoating process, and by limited curing depth. To overcome these challenges, we developed a high-performance slurry using a synergistic strategy combining BN surface functionalization with optical modulation via SiO 2 . Ultrasonic-assisted hydrolysis and silane coupling significantly enhanced interfacial compatibility with the resin, reducing viscosity from 20.83 to 4.51 Pa·s at a shear rate of 30 s −1 . Simultaneously, the incorporation of refractive-index-matched SiO 2 effectively suppressed light scattering, thereby increasing curing depth and structural integrity. Furthermore, SiO 2 regulated liquid-phase behavior during sintering to optimize the microstructure. The resulting ceramics exhibited an exceptional property balance: 42.14 % porosity, 68.2 MPa flexural strength, a dielectric constant of 2.56, and a loss tangent of 6.85 × 10 −3 . These metrics satisfy the stringent requirements for wave-transparent applications, offering a robust pathway for manufacturing complex-shaped components.
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高影响因子
IEEE Photonics Journal
·
2024
·Vol. 16
·期 4
·1-9
·
IF 2.1
Wenying Zhou,Xue Han,Yanjun Wu,Guochao Shi,Shiqi Xu,Mingli Wang,Wenzhi Yuan,Jiahao Cui,Zelong Li
An effective SERS-based detection method assisted by machine learning algorithm has been developed to intelligently identify the pharmacodynamic substances in traditional Chinese medicine (TCM) which aided in the quality control and identification of TCM. In this work, the ultrasensitive grating-like core-shell Ag@SiO2@Cu@moth wing (Ag@SiO2@Cu@MW) SERS platform was explored which can precisely control the intergap distances by adjusting the thickness of the SiO2 layer. This SERS platform demonstrated reproducibility and reliability, with a low relative standard deviation (RSD) of 7.38% and an enhancement factor (EF) of 2.49 × 107. The optimized Ag30@SiO2(4)@Cu20@MW substrate were then applied in the accurately analyzing pharmacodynamic substances. Specifically, the label-free SERS analysis showed the distinct spectral features for Jujuboside A, Saikosaponin A and Timosaponin A-III. Machine learning algorithms, such as principal component analysis (PCA), decision tree (DT), support vector machine (SVM), k-nearest neighbors (kNN) were employed and further in differentiating with the three pharmacodynamic substances Raman spectrum groups. These results indicate that SERS technology in combination with machine learning algorithms can not only achieve rapid and accurate detection of different types of pharmacodynamic substances, but also promote the modernization and international application of TCM.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
·
IF 5.4
Le Zhang,Yuxin Zuo,Sijia Sun,Jianmeng Zhang,Xuan Wang,Minghao Fang,Hao Ding
To improve the long-term UV stability of outdoor architectural coatings, a SiO₂ shell was coated onto the primary product of TiO 2 (P-TiO₂). The primary product of TiO 2 coated with SiO 2 shell (P-TiO 2 @SiO 2 ) composite particles were prepared via a sol–gel method, forming a uniform and dense SiO 2 coating layer on the P-TiO 2 surface to enhance its UV-shielding performance. The P-TiO₂@SiO₂ composite particles were used to construct a superhydrophobic coating by a simple two-step spraying process. KH560-modified E-51 epoxy resin was used as the adhesive layer, followed by spraying of the P-TiO₂@SiO₂/HDTMS hydrophobic layer. After 30 days of UV irradiation, the coatings containing P-TiO 2 @SiO 2 as the filler exhibited a color difference (ΔE*) of only 0.38 and a yellowing index (Δb*) of 0.23, significantly lower than those with pure P-TiO 2 (ΔE*=1.64, Δb*=0.76). It indicated that the SiO 2 shell effectively reduced color change and yellowing. Furthermore, the amorphous nanoscale SiO 2 uniformly coated on the P-TiO 2 surface contributed to the formation of a rough surface morphology. After modification, the superhydrophobic coatings achieved a water contact angle (WCA) of 161.5° and a sliding angle (WSA) of 1.23°. The coatings demonstrated excellent superhydrophobicity and self-cleaning performance on multiple substrates, including concrete, wood, and bricks. Moreover, they maintained stable superhydrophobicity after 60 days of continuous UV irradiation. Abrasion tests indicated that the incorporation of the KH560-modified epoxy resin primer significantly improved the wear resistance of the coatings. After 21 abrasion cycles, the coatings retained superhydrophobicity, whereas coatings without a primer lost superhydrophobicity after only 9 cycles. The superhydrophobic coatings prepared in this study were superhydrophobic, self-cleaning, UV-aging-resistant, fluorine-free, and wear-resistant without introducing traditional organic UV absorbers and hindered amine light stabilizers. The preparation process was simple, and the coatings exhibited stable and reliable performance, demonstrating promising applications in long-term outdoor protective and self-cleaning coatings. Download: Download high-res image (261KB) Download: Download full-size image
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高影响因子
Materials
·
2026
·Vol. 19
·期 19
·4155
·
IF 3.7
Hong-Bo Wang,Miao Yu,Chong Ren,Muhaiminul Islam Shakil,Chen Chen,Liang Zhou,Da-Yan Ma,Wei Wang
Conventional superhydrophobic coatings on aluminum alloys are frequently limited by inadequate coating–substrate adhesion, poor mechanical robustness, and the vulnerability of their surface micro/nanostructures to mechanical damage. To address these challenges, a hydroxyl-rich anodic oxide interlayer was formed via hard anodization followed by a hydroxylation treatment, thereby enhancing interfacial bonding and providing abundant active anchoring sites for coating deposition. Using this interface-engineering strategy, a mechanically durable superhydrophobic F-SiO2@polyurethane (PU) composite coating with hierarchical micro/nanostructures was successfully fabricated on aluminum alloy substrates through a facile spray-coating process. The anodized substrate provides abundant hydroxyl groups and interfacial anchoring sites, while the PU matrix enhances structural integrity and facilitates particle fixation. Incorporating fluorinated SiO2nanoparticles produced a hierarchical micro/nanostructure with low surface energy. After 10,000 cm of abrasion and 200 tape-peeling cycles, the coating maintained contact angles above 150°. The coating maintained superior corrosion resistance during prolonged immersion in acidic, alkaline, and saline environments. The improved durability and corrosion resistance originate from the synergistic effects of strong interfacial bonding, polymer barrier protection, and the fluorinated hierarchical structure. This study offers a promising strategy for developing durable superhydrophobic coatings for long-term protection of aluminum alloys.
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JOURNAL OF CHROMATOGRAPHY A
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2026
·
IF 4
Wen-Jing Zhao,Xin-Yue Wang,Jin-Shuang Wang,Yuan-Yuan Cui,Cheng-Xiong Yang
In this work, a novel sulfonic acid-functionalized microporous organic network-coated SiO 2 composite (SiO 2 @MON-SO 3 H-2) was synthesized for efficient solid-phase extraction (SPE) of quaternary ammonium alkaloids (QAAs) from complex traditional Chinese medicine (TCM) samples. The material exhibits a high specific surface area (381.4 m 2 g −1 ), superhydrophilicity, and excellent stability. These properties, combined with synergistic interactions such as electrostatic attraction, hydrophobic effects, and π-π stacking, enabled the adsorbent to demonstrate outstanding extraction performance toward four typical QAAs. The developed method owns wide linear ranges (0.88–1000 μg L −1 ) with good linearity (R 2 > 0.999), high sensitivity (limits of detection: 0.26–1.02 μg L −1 ), satisfactory precision (intra- and inter-day RSDs < 6.3%), high enhancement factors (> 91), and insignificant matrix effects (86.6–115.3%). The material maintained excellent reusability, with recoveries remaining above 89% after 50 extraction-desorption cycles. When applied to spiked herbal matrices, the method provided recoveries of 92.7–112.0%. SiO 2 @MON-SO 3 H-2 also gave higher recovery than commercial C18, activated carbon, macroporous adsorption resin AB-8, and the cation-exchange resin Amberlite 732. The present work demonstrates the prospect of SiO 2 @MON-SO 3 H-2 for trace QAAs extraction from complex samples and provides a reliable approach for TCM analysis and quality control.
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PubMed
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 84
·68815-68821
·
IF 3.84
Qiang Li,Yue Zhang,Yang Jin,Qingbiao Yang,Jianshi Du,Yaoxian Li
A novel multifunctional fluorescent chemosensor has been constructed with a highly selective “off–on” behavior, recoverability and recyclability based on β-CD/AD (adamantane) host–guest self-assembly interactions. Adamantane-modified fluorescein/cyclodextrin-modified Fe3O4@SiO2 inclusion complex magnetic nanoparticles (FFIC MNPs), which can provide a specific green fluorescence enhancement in response to Zn2+, have a detection limit of 4.5 × 10−7 mol L−1 in CH3CN : H2O (1 : 4, v/v). The spirolactam ring in the fluorophore moiety would be open with the introduction of Zn2+, while it could recover as long as the zinc in the complex is removed. Meanwhile, one gram of FFIC MNPs can adsorb 6.1 mg zinc. Therefore, the derivative chemosensors, FFIC MNPs–Zn, are available to respond to CN− due to the fluorescence quenching under UV (ultraviolet) radiation with a detection limit of 7.7 × 10−7 mol L−1. Furthermore, the FFIC MNPs exhibit great reusability and recyclability in aqueous solution on account of their magnetism and reproducibility. We recycle the residual MNPs to detect Zn2+ repeatedly for at least 4 times, after readily adsorbing the complex zinc with excess CN−, and the same principle also works in reverse. If the fluorophore moiety is inactive, we could also wash out the useless fluorescent molecules from the MNPs (hosts) and then reassemble new fluorescent small-molecules (guests) to maintain the efficient properties of the probe in responding to Zn2+ and CN− for at least 7 times.
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高影响因子
ANALYTICA CHIMICA ACTA
·
2026
·
IF 6.1
Jing Jin,Cuicui Guo,He Zhang,Tian Tian,Bairong Fu,Longxing Wang,Dongqin Tan,Jiajia Yang,Ningbo Geng,Jiping Chen
Background Bisphenols, as ubiquitous environmental contaminants, pose significant public health concerns owing to their endocrine-disrupting properties. While liquid chromatography-tandem mass spectrometry is the gold standard for their trace-level quantification in biological matrices, its accuracy is fundamentally limited by substantial matrix effects. The development of separation techniques and analytical method for human biomonitoring will significantly advance human health risk assessment. The complexity of biological matrices and low concentrations of targets are the main challenges for human biomonitoring. Developing accessible and economic SPE sorbents suitable for the cleanup of serum is pivotal for conducting large-scale epidemiological and toxicological studies of BPs. Results We present a cleanup protocol based on a 13X-type Na 86 (AlO 2 ) 86 (SiO 2 ) 106 zeolite, and it achieved consistent and acceptable matrix effect suppression (63.3%–121%), outperforming commercial alternatives like C 18 (15.0%–107%), HLB (4.5%–87.7%), and PEP-2 (8.9%–142%). Correlation analysis suggested that analyte recovery was significantly associated with logK ow ( P < 0.01) and positively correlated with estimated molecular volume. Combining the binding energy analysis, our finding suggested the role of shape selectivity and strong interaction (e.g. hydrogen bond interaction, electrostatic interaction) within the zeolite pores. The developed method was validated with bovine serum, demonstrating acceptable sensitivity (0.075–0.39 ng mL −1 ), precision (2.2%–18.0%), and accuracy (71.4%–124%). Its reliability for human biomonitoring was further evaluated by the good agreement with a reference method via Bland-Altman analysis. Significance The zeolite-based SPE protocol demonstrates good selectivity and robustness, establishing it as a superior sample preparation technique for the biomonitoring of BPs in serum. It is feasible for the accurate assessment of the human internal exposure to BPs. In addition, our work identifies critical factors influencing extraction efficiency and molecular interactions via multiple regression analysis and molecular simulation, thereby providing a possible mechanistic insight.
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高影响因子
Molecular Catalysis
·
2023
·
IF 4.6
Xiaoqing Zhang,Yuewen Shao,Kai Sun,Mengjiao Fan,Shu Zhang,Xun Hu
Nickel-based catalysts are widely used in hydrogenation of varied types of organics. However, the nickel catalyst, like Ni/SiO 2 , lacks selectivity for hydrogenation of C=C and C=O. This is undesirable in some scenarios, such as conversion of biomass-derived furfuryl alcohol (FA) to cyclopentanone (CPO), a fine chemical, in which the C=C in furan ring of FA needs to be retained. In this study, introduction of sulfur species to Ni/SiO 2 catalyst via loading NiSO 4 was adopted to inhibit hydrogenation of furan ring in FA, aiming to achieve conversion of FA to CPO via ring-opening route. The results indicated that NiSO 4 was reduced to Ni x S y , which further reacted with metallic Ni, forming Ni 3 S 2 species and introducing the acidic sites with high-strength. The co-existence of Ni x S y and metallic Ni species effectively hindered hydrogenation of furan ring in FA, reducing tetrahydrofurfuryl alcohol (THFA) yield from 97% over Ni/SiO 2 to 0 over the NiS x /SiO 2 catalysts and shifting the major product to CPO. Nonetheless, the enhanced acidic sites along with the introduction of NiSO 4 catalyzed polymerization of reaction intermediates, competing with the production of CPO. The acidic sites, however, facilitated hydrogenolysis of vanillyl alcohol to selectively produce (yield: 94.3%) in hydrogenation of vanillin. Characterization of hydrogenation of FA with in-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) technique suggested the oxygen-containing functionalities in FA, instead of furan ring, could strongly adsorb on the NiS 10 /SiO 2 catalyst, enhancing rearrangement reaction to form CPO while suppressing hydrogenation of the furan ring.
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