Crystals
·
2026
·Vol. 16
·期 4
·264
·
IF 2.9
Tengbo Chen,Yuxi Yu,Haoran Gao,Ronggui Zhang,Zhong Luo,Shuyuan Zhao
Bi-doped rare-earth iron garnet (Bi:RIG) single crystals are the core of optical isolators, and demand for them is surging due to the development of artificial intelligence (AI) technology. In this work, bismuth-doped terbium iron garnet (Bi:TbIG) single crystals with a composition of Bi0.86Tb2.14Fe5O12and a size of 37 mm were successfully grown by the top-seeded solution growth (TSSG) method using a lead-containing flux system. These crystals exhibited a regular rhombic dodecahedron morphology enclosed by the {110} plane, and a growth rate of 0.018 mm/h perpendicular to the {110} planes. Systematic characterizations revealed that the crystals exhibited good compositional homogeneity, with no obvious Fe, Tb and Bi segregation from center to edge. Rocking curve tests presented a full width at half maximum of 172 arcsec. X-ray photoelectron spectroscopy (XPS) results demonstrated that Fe exists exclusively in the +3 valence state without detectable Fe2+, whereas Tb is present in the +4 valence state. In addition, O was lattice O2−, without obvious defects. Magneto-optical tests indicated that the uncoated TSSG-grown Bi:TbIG crystals had 71% transmittance in the 1200~1600 nm waveband, and a Faraday rotation coefficient of 0.132°/μm at 1310 nm. The 11 × 11 mm samples exhibited an extinction ratio stably above 40 dB. The 349 μm thick samples meet the application requirements of miniaturized optical isolators. This study verifies the feasibility of TSSG for growing Bi:TbIG single crystals, offering a new technical route for Bi:TbIG growth with potential value for practical application.
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DOI
高影响因子
ChemSusChem
·
2023
·Vol. 17
·期 4
·e202301210
·
IF 8.4
Gaozhi Yuan,Xing Wei,Qing Zhang
Graphical The commonly used modified Hummers method to produce carbon nanosheets requires substantial use of strong acid and oxidizer. With natrual abundant biomass materials as carbon precursor, a facile and eco-friendly strategy is proposed by extracting thin cellulose sheets from cell wall structures.The method is applicable to multi-sourced biomass and the obtained carbons exhibit excellent performance in both aqueous and organic electrolytes. Carbon electrode materials with superior rate performance are highly demanded in application scenarios of high power output/input, especially when paired with organic electrolyte for extended voltage window and high energy storage. By extracting thin sheets of entangled cellulose fibers from cell wall structures, porous carbon nanosheets as templated from the cellulose sheets are synthesized. Evident thickness reduction effect has been demonstrated with thickness reduced from several micrometers to several nanometers of the obtained thickness-reduced activated carbon nanosheets (TRAC), which endow the material with a large surface area and high pore volume. The obtained TRAC exhibits significantly enhanced ion diffusion kinetics and superior rate capability thanks to the shortened diffusion pathway and suitable pore size distribution. Effects of sonication time have also been investigated, showing a trade-off between ion diffusion kinetics and pseudocapacitive contribution. This thickness-reduction method is extendable to many other biomass sources as cellulose sheets are widely existed in nature, offering a practical and easy-to-implement strategy of fabricating porous carbon nanostructures for efficient energy storage and utilization.
研究领域:
材料科学
·
能源存储
·
环境科学
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DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2018
·
IF 2.943
Yi-Yi Liu,Xin-Yu Ye,Qing-Qing An,Bing-Xin Lei,Wei Sun,Zhen-Fan Sun
The bottom-straight and top-bent dual anatase TiO 2 nanowires directly on flurine-doped tin oxide (FTO) glass substrate are successfully synthesized for the first time via a two-step solvothermal reaction, which obtains single anatase TiO 2 nanowires with the diameter of 250–450 nm and the length of ∼49 μm in the first growth step, and the slender TiO 2 nanowires with the diameter of 40–80 nm intertwining larger nanowires to form dual nanowires network in the secondary growth step. Dye-sensitized solar cell (DSSC) based on dual TiO 2 nanowires exhibits the power conversion efficiency of 5.30%, which is much higher than those of DSSCs based on the pristine single TiO 2 nanwires (2.36%) due to the twining network like dual nanowires structure maintaining excellent electron transport and simultaneously enhancing the specific surface area and light scattering ability. Moreover, by TiO 2 sol treatment, the performance of dual TiO 2 nanowires based DSSC can be further enhanced, reaching an impressive power conversion efficiency (PCE) of 7.65%.
研究领域:
材料科学
·
纳米技术
·
太阳能
·
化学工程
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DOI
高影响因子
Laser & Photonics Reviews
·
2023
·Vol. 17
·期 8
·2300371
·
IF 11
Haotao Li,Shiming Zhou,Shuming Chen
Top-emitting (TE) quantum-dot light-emitting diodes (QLEDs) can exhibit higher light outcoupling efficiency (OCE) compared to bottom-emitting (BE) QLEDs due to the eliminated substrate mode and enhanced microcavity effect. In this study, TE QLEDs with an OCE of over 45% are realized by simultaneously optimizing the thicknesses of both indium-zinc-oxide (IZO) phase tuning layers and IZO top transparent electrodes. To reduce the resistance, the IZO top electrodes are equipped with an auxiliary metal electrode. Consequently, the red QLEDs demonstrate a high external quantum efficiency (EQE) of 38.2%. Furthermore, by applying a scattering layer on the IZO top electrode, the red QLEDs demonstrate record-breaking efficiencies of EQE 44.5%, power efficiency 92.2 lm W −1 , and current efficiency 93.7 cd A −1 . The proposed device architecture and optimization strategy contribute to a new design scheme for the preparation of highly efficient QLEDs for displays and lighting applications.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Peiyi Meng,Yuyin Shao,Yingying Xiong,Lei Zhang,Huimin Bao,Haojie Lu
A newly synthesized proteome reflects perturbations sensitively and maintains homeostasis in cells. To investigate the low abundant newly synthesized proteins (NSPs) from a complex background proteome, an enrichment process with high selectivity and reliability is essential. Here, we have developed a strategy to realize comprehensive analysis of NSPs by integrating tandem orthogonal proteolysis (TOP) with cleavable bioorthogonal tagging (CBOT) called TOP–CBOT. A solid-phase-conjugated probe with a clickable moiety and a protease-cleavable site was designed, which allowed NSPs to be covalently captured along with tandem release by trypsin and orthogonal tobacco etch virus (TEV) protease. Our method has integrated the advantages of protein-level and peptide-level enrichment. Trypsin digests larger number of peptides from the recovered proteins for NSPs identification and quantification, while the specific tag-contained peptides from TEV data set enabled further NSPs confirmation. Integrating information from two complementary data sets, the reliability in NSPs identification and quantitation were remarkably enhanced. A total of 3699 proteins were recovered in the trypsin data set. Additionally, 1931 proteins were confirmed as NSPs with 5019 identified peptides in the TEV data set, over 90% of which were overlapped with the tryptic data set. Our strategy was further applied to profile NSP degradation kinetics during rapamycin-induced macroautophagy. The newly synthesized proteome displayed varied alteration of degradation rates among stimulation and more than half of NSPs showed decreased half-lives during autophagy.
研究领域:
蛋白质组学
·
生物化学
·
细胞生物学
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DOI
PubMed
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-12
·
IF 4.259
Zhi Jinghui,Zhang Li-Zhi
This study reported a simple fabrication method for a durable superhydrophobic surface. The superhydrophobic top layer of the durable superhydrophobic surface was connected intensely to the substrate through a middle connecting layer. Glycidoxypropyltrimethoxysilane (KH-560) after hydrolysis was used to obtain a hydrophilic middle connecting layer. It could be adhered to the hydrophilic substrate by covalent bonds. Ring-open reaction with octadecylamine let the KH-560 middle layer form a net-like structure. The net-like sturcture would then encompass and station the silica particles that were used to form the coarse micro structures, intensely to increase the durability. The top hydrophobic layer with nano-structures was formed on the KH-560 middle layer. It was obtained by a bipolar nano-silica solution modified by hexamethyldisilazane (HMDS). This layer was connected to the middle layer intensely by the polar Si hydroxy groups, while the non-polar methyl groups on the surface, accompanied by the micro and nano structures, made the surface rather hydrophobic. The covalently interfacial interactions between the substrate and the middle layer, and between the middle layer and the top layer, strengthened the durability of the superhydrophobic surface. The abrasion test results showed that the superhydrophobic surface could bear 180 abrasion cycles on 1200 CW sandpaper under 2 kPa applied pressure.
研究领域:
材料科学
·
表面工程
·
纳米技术
·
疏水材料
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DOI
高影响因子
JOURNAL OF NUCLEAR MATERIALS
·
2026
·
IF 3.3
Peng-Cheng Cai,Xin-Wen Zhou,Xiao-Ming Dang,Zhen-Qi Shi,Guo-Hua Zhang
Tungsten (W) is regarded as a key candidate material for extreme service environments. However, its relatively high ductile-to-brittle transition temperature (DBTT) and rapid grain growth at elevated temperatures have long restricted its engineering applications. In present work, an integrated route combining bottom‑up and top‑down approaches was employed. Ultrafine W-1 wt.% La 2 O 3 powders were synthesized via a novel carbothermic pre-reduction followed by hydrogen deep deoxidation process. Subsequent hydrogen pre-sintering and spark plasma sintering (SPS) enabled rapid densification and controlled deformation at a relatively low temperature, producing a fine-grained W alloy (0.77 μm) with distinct substructural features. Nanoscale La 2 O 3 particles were uniformly distributed throughout the matrix. During high-pressure SPS, the formation of a weak γ-fiber texture ({111}//ND) promoted cooperative activity among multiple {111} 〈110〉 primary slip systems. La 2 O 3 particles located at grain boundaries effectively suppressed boundary migration through Zener pinning, while intragranular nanoparticles coordinated dislocation motion via combined Orowan bypassing and shearing mechanisms. The multiscale structural synergy enabled a favorable strength-ductility balance between 200 and 600 °C. The alloy exhibits noticeable plastic deformation at 200 °C, with distinct yielding (972.3 MPa) and uniform strain‑hardening behavior. This study elucidates the coupling among grain refinement strengthening, Orowan strengthening and dislocation forest hardening, thus providing a new design strategy for achieving high-temperature microstructural stability and mechanical reliability in W alloys.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jin-Le Li,Fang Wang,Chun-Bo Li,Ren-Yi Sun,Mei-Lin Guo,Gang Wu,Fei Song,Yu-Zhong Wang
Essential requirements of protective clothing with multi-scenario practicability deserve intensive attention. Aramid fabric is widely used to protect industrial and outdoor workers operating under various hazardous conditions but is susceptible to fouling, subzero cold water and icing, resulting in severely deteriorated protective properties. However, the chemical inertness of aramid fabrics limits their further functionalization. This issue is addressed herein by developing a novel top-down strategy to construct an intrinsic densely packed acicular nanostructure on the surface of aramid fiber through the proton donor-assisted deprotonation-induced roughening (PAIR) method. The PAIR treatment consists of extracting hydrogen protons from the amide moiety and controllably dissociating the outer shell of the aramid fibers without destroying its hard-core structure. Such a “rough-surface-on-intact-core” texture endows the fabric with greatly enhanced water repellency, anti-icing and anti-fouling properties without sacrificing its impressive mechanical properties, moisture permeability and flame retardancy. Remarkably, the treated fabric can load 37 times its own weight in water, presenting an increased buoyancy and demonstrates an icing delay time of 1920 s, which is 1150 % that of a pristine aramid fabric. Featuring the easy processability, high endurance and multiple functions, the fabric is promising for applications in personal protective equipment and advanced functional textiles with multiple tasks under harsh weather events.
研究领域:
材料科学
·
纺织工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xiaohui Mao,Jiaqi Li,Yinghui Li,Tian Si,Jie Shang,Shengbao Cai,Xin Gao,Lincai Peng,Heng Zhang
High chemical stability, biological toxicity, and chromaticity of synthetic dyes lead to the problems such as excessive oxidant dosage, microbial anaerobic retardation, and difficult photocatalytic degradation during their wastewater treatment. The technology of selective adsorption makes it possible to recycle or reuse dyes for the purpose of achieving low energy-consumptive and eco-benign strategy in dye effluent purification. Based on the inherent structure of corn stalk pith (CSP), we prepared carbohydrate columns (CSPC) and dimethyldiallylammonium chloride-CSPC (D-CSPC) via in-situ delignification followed by surface cationization. Our study illustrates that these adsorbents retain the original anisotropic three-dimensional structure of CSP, providing highly-developed channels and pores for efficient mass transfer. In cationic/anionic dye binary system, D-CSPC shows controllable selective adsorption capacity by changing its surface N + (CH 3 ) 2 density. The selectivity factor of D-CSPC for MO (methyl orange) and AR (alizarin red) increased from 0.13 to 6.17 and 0.17 to 4.73, respectively, as the cationization degree of CSPC was elevated. Both adsorbents have been also confirmed to be effectively recycled, while maintaining over 80% of the dye adsorption capability after five cycles. Moreover, the adsorbent demonstrated significant potential for practical industrial applications, as evidenced by its successful performance to treat the high ionic strength solution and simulated textile wastewater. The approach of current study provides a new, facile, and green-synthesis route toward the exploration of natural and biodegradable agricultural waste integrated into a simple process for the production of cheap, selective, and recyclable adsorbent.
研究领域:
环境科学
·
生物材料学
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产品关联
DOI
高影响因子
Coatings
·
2023
·Vol. 13
·期 11
·1929
·
IF 3.4
Li Ai,Xueying Wang,Ming Yang,Yuntao Lei,Yongping Zhu
Thermal barrier coatings have been used to protect superalloys under extremely harsh conditions. The durability of TBCs with a NiCoCrAlY bond layer prepared via the air plasma spray process and an ultrathin dense layer prepared via magnetron sputtering was investigated under different corrosion conditions. This paper discusses the corrosion resistance improvement mechanism of TBCs with a dense layer produced by magnetron sputtering under corrosion conditions with environmental contaminants such as calcium–magnesium–aluminum–silicon oxide systems (CMAS) at 1300 °C and NaCl-Na2SO4-V2O5(NV) at 900 °C. The corrosion results show that CMAS will react with the stabilizers of zirconium oxide, which will change the rate of the phase transition, as determined via X-ray diffraction tests. A thermal ablation test verified that TBCs with a dense layer have a better corrosion resistance and better thermal insulation properties. All results show that preparing TBCs with a dense layer via the magnetron sputtering method will be an efficient method to improve TBCs’ properties at high temperatures in the future.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Hong Jia,Jie Wang,Wenwen Fu,Junhua Hu,Yu Liu
Metal-organic frameworks (MOFs) have been considered as the outstanding templates and precursors in synthesizing advanced cathode materials for supercapacitor. Herein, a novel hierarchical structure with hollow Co 9 S 8 polyhedrons welding on the top of MnCo 2 S 4 nanoneedles are rationally designed via a facile in-situ vulcanization approach. The unique morphology can provide more abundant reaction sites and ensure the efficient electron transport. Due to the synergistic effect between MnCo 2 S 4 and Co 9 S 8 , the hybrid electrode delivers a favorable specific capacity of 1100.5 F·g −1 at a current density of 1 A·g −1 in three-electrode system. Furthermore, an assembled asymmetric supercapacitor comprising MnCo 2 S 4 /Co 9 S 8 and activated carbon delivers a high energy density up to 45.8 W·h·kg −1 at a power density of 800 W·kg −1 . Moreover, the device holds more than 94.8% capacitance retention after 5000 cycles, demonstrating it could be a potential electroactive material for next-generation high performance energy storage device.
研究领域:
材料科学
·
能源存储
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产品关联
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2015
·Vol. 21
·期 9
·3791-3797
·
IF 5.731
Hanjun Sun,Haiwei Ji,Enguo Ju,Yijia Guan,Jinsong Ren,Xiaogang Qu
Graphical Caught on camera : By combining a microwave-assisted technique with hydrothermal treatment and using fluorinated graphene oxide (FGO) as a raw material, fluorinated graphene quantum dots (GQDs) and nonfluorinated GQDs are synthesized (see figure). Fluorinated GQDs show improved pH and photostability compared with nonfluorinated GQDs due to fluorine. Fluorinated GQDs are suitable for long-term cellular imaging. Herein, a new strategy has been developed through combining a microwave-assisted technique with hydrothermal treatment to reduce graphene waste and improve production yield of graphene quantum dots (GQDs) prepared by top-down methods. By using fluorinated graphene oxide (FGO) as a raw material, fluorinated GQDs and nonfluorinated GQDs can be synthesized. Additionally, in the fluorinated GQDs, the protective shell supplied by fluorine improves the pH stability of photoluminescence and the strong electron-withdrawing group, F, reduces the π- electron density of the aromatic structure; thus inhibiting reactivity toward singlet oxygen produced during irradiation and improving the photostability. Therefore, the as-prepared fluorinated GQDs with excellent photo- and pH stability are suitable for long-term cellular imaging.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
✓ 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）