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学者姓名:赵纯林
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When the AlCl3/toluene system is employed as a catalyst, the vulcanized rubber obtained from the dodecanedioic acid (DA)-based vulcanization of epoxidized natural rubber (ENR) can be effectively decrosslinked at 160 degrees C over a period of 18 h. The reclaimed rubber can subsequently be revulcanized using DA, thereby demonstrating favorable recyclability and mechanical properties (tensile strength is 2.5 MPa, elongation at break is 91.6% and the rate of degradation is 100%). During the reaction process, AlCl3 coordinates with the carbonyl oxygen atoms within the cross-linking network, facilitating a nucleophilic substitution reaction between water (as the nucleophile) and ester groups. This reaction leads to the formation of hydroxyl groups, some of which undergo dehydration to form carbon-carbon double bonds. Through comprehensive characterization of the reclaimed rubber and model compounds, the plausible decrosslinking mechanism of the vulcanizate was elucidated.
Keyword :
Cross-linking Cross-linking Epoxidized natural rubber Epoxidized natural rubber Model compounds Model compounds Recycle Recycle Sulfur-free vulcanization Sulfur-free vulcanization
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GB/T 7714 | Chen, Bingshen , Ke, Jinhuang , Lin, Tengfei et al. Chemical Recovery and Decrosslinking Mechanism of Dodecanedioic Acid-Cured Epoxidized Natural Rubber [J]. | CHEMISTRYSELECT , 2025 , 10 (24) . |
MLA | Chen, Bingshen et al. "Chemical Recovery and Decrosslinking Mechanism of Dodecanedioic Acid-Cured Epoxidized Natural Rubber" . | CHEMISTRYSELECT 10 . 24 (2025) . |
APA | Chen, Bingshen , Ke, Jinhuang , Lin, Tengfei , Wen, Na , Gao, Min , Zhao, Chunlin et al. Chemical Recovery and Decrosslinking Mechanism of Dodecanedioic Acid-Cured Epoxidized Natural Rubber . | CHEMISTRYSELECT , 2025 , 10 (24) . |
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The electrocaloric effect of ferroelectrics holds great promise for solid-state cooling, potentially replacing traditional vapor-compression refrigeration systems. However, achieving adequate electrocaloric cooling capacity at room temperature remains a formidable challenge due to the need for a high intrinsic electrocaloric effect. While barium titanate ceramic exhibits a pronounced electrocaloric effect near its Curie temperature, typical chemical modifications to enhance electrocaloric properties at room temperature often reduce this intrinsic electrocaloric effect. Herein, a structural design is introduced for barium titanate-based ceramics by incorporating isovalent cations. This leads to a well-ordered local structure that decreases the Curie temperature to room temperature while preserving a sharp phase transition, enabling a large dielectric constant and tunable polarization. This design achieves a remarkable electrocaloric strength of ~1.0 K·mm/kV, surpassing previous reports. Atomic-resolution structural analyses reveal that the presence of multiscale nanodomains (from ~10 nm to >100 nm), and the dipole polarization distribution with gradual dipole rotation enable rapid phase transition and facile polarization rotation, accounting for the giant electrocaloric response. This work provides a strategy for achieving a strong intrinsic electrocaloric effect in ferroelectrics near room temperature and offers key insights into the microstructure landscapes driving this enhanced electrocaloric effect. © The Author(s) 2025.
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GB/T 7714 | Wu, B. , Tao, H. , Chen, K. et al. Giant intrinsic electrocaloric effect in ferroelectrics by local structural engineering [J]. | Nature Communications , 2025 , 16 (1) . |
MLA | Wu, B. et al. "Giant intrinsic electrocaloric effect in ferroelectrics by local structural engineering" . | Nature Communications 16 . 1 (2025) . |
APA | Wu, B. , Tao, H. , Chen, K. , Xing, Z. , Wu, Y.-Q. , Thong, H.-C. et al. Giant intrinsic electrocaloric effect in ferroelectrics by local structural engineering . | Nature Communications , 2025 , 16 (1) . |
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Energy storage high-entropy ceramics are famous for their ultrahigh power density and ultrafast discharge rate. However, achieving a synchronous combination of high energy density and efficiency along with intelligent temperature-monitorable function remains a significant challenge. Here, based on high-entropy strategy and phase field simulation, the polarization response of domains in Bi0.5Na0.5TiO3-based ceramics is optimized by constructing a concomitant nanostructure of defect dipole polarization and a polymorphic relaxor phase. The optimal ceramic possesses a high recyclable energy storage density (11.23 J cm-3) and a high energy storage efficiency (90.87%) at 670 kV cm-1. Furthermore, real-time temperature sensing is explored based on abnormal fluorescent negative thermal expansion, highlighting the application of intelligent cardiac defibrillation pulse capacitors. This study develops an effective strategy for enhancing the overall energy storage performance of ferroelectric ceramics to overcome the problems of insufficient energy supply and thermal runaway in traditional counterparts.
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GB/T 7714 | Zeng, Xiangfu , Lin, Jinfeng , Dong, Gaolei et al. Polymorphic relaxor phase and defect dipole polarization co-reinforced capacitor energy storage in temperature-monitorable high-entropy ferroelectrics [J]. | NATURE COMMUNICATIONS , 2025 , 16 (1) . |
MLA | Zeng, Xiangfu et al. "Polymorphic relaxor phase and defect dipole polarization co-reinforced capacitor energy storage in temperature-monitorable high-entropy ferroelectrics" . | NATURE COMMUNICATIONS 16 . 1 (2025) . |
APA | Zeng, Xiangfu , Lin, Jinfeng , Dong, Gaolei , Shen, Jie , Tang, Luomeng , Lin, Qifa et al. Polymorphic relaxor phase and defect dipole polarization co-reinforced capacitor energy storage in temperature-monitorable high-entropy ferroelectrics . | NATURE COMMUNICATIONS , 2025 , 16 (1) . |
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The coordination of multiple luminescent centers in a simple and efficient way is a difficult challenge for realizing the tunable multicolor function of fluorescent hydrogels. In this work, we synthesized a fluorescent hydrogel with multicolor conversion via a "one-pot method," which greatly simplifies the tedious steps of preparing fluorescent hydrogels. The luminescence intensity and color of the synthesized DPA-Eu/TPE@PVA hydrogel can be modulated by various stimuli, such as the excitation wavelength, pH, and presence of Fe3+ ions. The entire work centers on the rational introduction of the light-emitting molecule tetrakis(4-hydroxyphenyl)ethylene (TPE-4OH) and the lanthanide ionic complex 2,6-pyridinedicarboxylic acid-Eu (DPA-Eu) into the poly(vinyl alcohol) (PVA) polymer network. Since the luminescence mechanisms of these two molecules differ, with the former emitting light with the aid of the aggregation-induced emission (AIE) effect and the latter emitting light through energy transfer via metal dynamic coordination bonds, individual luminescent molecules can be controlled independently under specific stimuli. The realization of this tunable multicolor fluorescence function has contributed to its application in fields such as sensors, probes, and information encryption.
Keyword :
aggregation-induced emission aggregation-induced emission fluorescenthydrogels fluorescenthydrogels informationencryption informationencryption metaldynamic ligand bonds metaldynamic ligand bonds multicolor multicolor rare earth ions rare earth ions stimulus responsiveness stimulus responsiveness
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GB/T 7714 | Liao, Shijie , Li, Zhou , Ren, Lumin et al. Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) : 700-709 . |
MLA | Liao, Shijie et al. "Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method"" . | ACS APPLIED POLYMER MATERIALS 7 . 2 (2025) : 700-709 . |
APA | Liao, Shijie , Li, Zhou , Ren, Lumin , Lin, Tengfei , Lin, Cong , Zhao, Chunlin et al. Multicolor Tunable AIE Fluorescent Hydrogels Containing Europium Ionic Complexes via the "One-Pot Method" . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) , 700-709 . |
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The introduction of dynamic covalent bonds into shape memory polymers (SMPs) has offered the possibility of reprocessing, but multifunctional modifications have not been sufficiently investigated. This work reported photoluminescence thermadapt two-way SMPs (2W-SMPs) based on syndiotactic 1,2-polybutadiene (SPB). The ZnS:Cu particles were modified to form beta-hydroxyester dynamic covalent bonds with epoxidized SPB (ESPB), and a dynamic reversible cross-linked network was constructed inside the shape memory polymer. The crystallization-melting characteristics of ESPB and the photoluminescence ability of ZnS:Cu endow the material with two-way shape memory and photoluminescence properties, respectively. Owing to the solid-state plasticity endowed by dynamic covalent bonds, the thermadapt 2W-SMPs can be recycled at high temperatures. In addition, we designed a "gripper" structure via its shape memory ability. The results showed that under variable temperature conditions, this material can successfully grasp objects. Its good photoluminescence effect ensures that the gripper structure can be accurately positioned in a dim environment.
Keyword :
dynamic covalentbonds dynamic covalentbonds photoluminescence photoluminescence recycling recycling thermadapt thermadapt two-way shape memory polymers two-way shape memory polymers
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GB/T 7714 | Feng, Wenliang , Xia, Biao , Lin, Tengfei et al. Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors [J]. | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) : 978-989 . |
MLA | Feng, Wenliang et al. "Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors" . | ACS APPLIED POLYMER MATERIALS 7 . 2 (2025) : 978-989 . |
APA | Feng, Wenliang , Xia, Biao , Lin, Tengfei , Wu, Wentao , Wei, Junwen , Gao, Min et al. Photoluminescence Thermadapt Two-Way Shape Memory Polymers Based on Syndiotactic 1,2-Polybutadiene with Modified Phosphors . | ACS APPLIED POLYMER MATERIALS , 2025 , 7 (2) , 978-989 . |
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TiO2 is a promising photoelectrochemical (PEC) material as photoanodes for photoelectric conversion. However, severe charge recombination issues in TiO2 significantly hinder the PEC efficiency and thus its application. It has been reported that the construction of rutile/anatase (R/A) heterophase junctions benefits fast charge transfer via interfaces and improves the efficiency of conversion. However, the evolution of R and/or A phases and their morphology and phase-transition effect on the PEC properties have not been investigated. In this study, unique TiO2 heterophase junctions consisting of R-phase nanorods on the titanate-coexisting-phase (CO-phase) truncated octahedral particles were fabricated through a two-step hydrothermal method, where the morphology and phase transition of a titanate-coexisting phase was meticulously controlled and carefully monitored. The heterophase junctions exhibited superior PEC performances with a photocurrent density of 1.62 +/- 0.05 mA cm-2 at 1.23 V, which was 4.3 times and 1.6 times greater than that of pure R phase and R-nanorod/A-nanosheet, respectively. This work demonstrates the potential of morphology engineering and phase transition of photo-anodes for highly efficient photoelectric conversion.
Keyword :
Heterophase junctions Heterophase junctions Morphology engineering Morphology engineering Photoelectrochemistry Photoelectrochemistry TiO2 photoanodes TiO2 photoanodes
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GB/T 7714 | Liu, Qun , Zhang, Yangdong , Chen, Xingyu et al. Morphology engineering of rutile/anatase-TiO2 heterophase junctions for enhanced photoelectrochemical properties [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 131 : 12-19 . |
MLA | Liu, Qun et al. "Morphology engineering of rutile/anatase-TiO2 heterophase junctions for enhanced photoelectrochemical properties" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 131 (2025) : 12-19 . |
APA | Liu, Qun , Zhang, Yangdong , Chen, Xingyu , Zhao, Chunlin , Wu, Xiao , Lin, Tengfei et al. Morphology engineering of rutile/anatase-TiO2 heterophase junctions for enhanced photoelectrochemical properties . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 131 , 12-19 . |
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Achieving high-quality white light and related effective modulation is crucial for the development of solid-state luminescent materials. However, white emission is frequently manipulated through irreversible chemical routes, departing from the actual applications in solid-state lighting devices that require in-situ modulation. In this study, we designed and prepared La3+/Dy3+/Eu3+ tri-doped (K0.5Na0.5)NbO3 transparent-ferroelectric ceramics, which exhibit abundant optical properties and moderate ferroelectricity. For the characteristics of white light, the emission colors could be regulated by adjusting the excitation wavelength. Meanwhile, on the basis of the decrease in photoluminescence intensity due to photochromic (PC) behavior, modulations of white emission and color coordinates were realized. The regulation of optical properties through the physical route (i.e., maneuverable light illumination) is closer to practical application. In addition, the excellent fluorescence temperature sensing properties (a maximum relative sensitivity of 7.81 % K-1 obtained at 233 K) and high PC contrast (75.8 %) of the ceramics provide guidance for the design of other multifunctional optoelectronic materials and devices.
Keyword :
Fluorescence temperature sensing Fluorescence temperature sensing K0.5Na0.5)NbO3 K0.5Na0.5)NbO3 Photochromism Photochromism White light modulation White light modulation
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GB/T 7714 | Lin, Qifa , Zhou, Ping , Zeng, Xiangfu et al. Modulations of high-quality white emission and fluorescence temperature sensing in La/Dy/Eu tri-doped KNN transparent-ferroelectric ceramics [J]. | CERAMICS INTERNATIONAL , 2025 , 51 (12) : 16719-16726 . |
MLA | Lin, Qifa et al. "Modulations of high-quality white emission and fluorescence temperature sensing in La/Dy/Eu tri-doped KNN transparent-ferroelectric ceramics" . | CERAMICS INTERNATIONAL 51 . 12 (2025) : 16719-16726 . |
APA | Lin, Qifa , Zhou, Ping , Zeng, Xiangfu , Lin, Mei , Gao, Min , Zhao, Chunlin et al. Modulations of high-quality white emission and fluorescence temperature sensing in La/Dy/Eu tri-doped KNN transparent-ferroelectric ceramics . | CERAMICS INTERNATIONAL , 2025 , 51 (12) , 16719-16726 . |
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Photosynthesis of hydrogen peroxide (H2O2) represents a green and cost-effective approach. However, achieving dual-channel photocatalytic oxygen reduction reaction (ORR) and water oxidation reaction (WOR) faces huge challenges due to sluggish carrier transfer and unfavourable WOR thermodynamics for most photocatalysts. Herein, a piezoelectric Step-scheme heterojunction comprising BaTiO3 nanowires and CdS nanoclusters (BTNWCdS heterostructures) is designed for efficient dual-channel H2O2 production. By harnessing the polarization electric field of BTNW, an enhanced H2O2 production rate of 6454.4 mu mol g-1h-1 is achieved in the piezophotocatalytic process by applying the visible light and ultrasound, which is 15.28 times and 1.68 times higher than that of piezocatalysis and photocatalysis alone, respectively. Mechanism analysis confirms that the internal electric field of BTNW-CdS heterostructures not only facilitates two-electron ORR by improving charge separation efficiency, but also overcomes the high uphill thermodynamics of direct two-electron WOR. Notably, the incorporation of lactic acid reacts with photogenerated holes to produce protons, which further facilitates ORR. Our findings demonstrate the potential of utilizing the built-in electric field of piezoelectrics to promote charge-carrier separation and enhance photocatalytic efficiency.
Keyword :
Hydrogen peroxide production Hydrogen peroxide production Photocatalysis Photocatalysis Piezo-photocatalysis Piezo-photocatalysis Polarization electric field Polarization electric field S -scheme heterostructure S -scheme heterostructure
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GB/T 7714 | Ye, Yimiao , Zhao, Chunlin , Zhou, Junyi et al. Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field [J]. | APPLIED SURFACE SCIENCE , 2025 , 685 . |
MLA | Ye, Yimiao et al. "Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field" . | APPLIED SURFACE SCIENCE 685 (2025) . |
APA | Ye, Yimiao , Zhao, Chunlin , Zhou, Junyi , Jin, Shilin , Deng, Xiangda , Chen, Daqin et al. Dual-Channel hydrogen peroxide Piezo-Photosynthesis over BaTiO3-CdS S-scheme heterojunction by the polarization electric field . | APPLIED SURFACE SCIENCE , 2025 , 685 . |
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Eco-friendly BaTiO3 (BTO)-based materials have been intensively studied as efficient piezo-photocatalysts for the degradation of contaminants and water remediation. However, studies on pure BTO are limited due to weak light absorption, insufficient piezoelectric polarization, and poor catalytic performance. Herein, we used different liquid-phase methods to prepare pure BTO particles to enhance the piezo-photocatalytic performance through microstructural manipulation. Compared with the BTO prepared via the hydrothermal method (BTO-HT), the BTO-SG (prepared via the sol-gel method) exhibit smaller particles, larger specific surface area, greater concentration of oxygen vacancies, and larger bandgap energy, resulting in more active sites, stronger piezophotocatalytic ability, improved degradation performance for rhodamine B (97 % within 60 min) with a higher degradation rate constant (5.541 x 10- 2 min- 1) 7.96 times that of the BTO-HT. The catalytic performance of BTO-SG is superior to that of most previously reported BTO-based catalysts. Importantly, synergistic piezophotocatalysis is much better than single photocatalysis (k = 0.757 x 10- 2 min- 1) or piezocatalysis (k = 1.703 x 10- 2 min- 1). In addition, the BTO-SG particles maintained stable degradation performance in environments containing inorganic anions or with various pH values. The degradation mechanism of BTO-SG was proposed in combination with free radical detection and photoelectric tests. This study provides a design thought for exploring other highly efficient BTO-based piezo-photocatalysts for water environment treatment.
Keyword :
BaTiO3 BaTiO3 Degradation Degradation Hydrothermal method Hydrothermal method Piezo-photocatalysis Piezo-photocatalysis Sol-gel method Sol-gel method
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GB/T 7714 | Wang, Ying , Zhong, Shiqi , Zeng, Xiangfu et al. Microstructural manipulation and enhanced piezo-photocatalytic performance of sol-gel-derived pure BaTiO3 particles [J]. | CERAMICS INTERNATIONAL , 2025 , 51 (3) : 3960-3969 . |
MLA | Wang, Ying et al. "Microstructural manipulation and enhanced piezo-photocatalytic performance of sol-gel-derived pure BaTiO3 particles" . | CERAMICS INTERNATIONAL 51 . 3 (2025) : 3960-3969 . |
APA | Wang, Ying , Zhong, Shiqi , Zeng, Xiangfu , Lin, Mei , Lin, Cong , Lin, Tengfei et al. Microstructural manipulation and enhanced piezo-photocatalytic performance of sol-gel-derived pure BaTiO3 particles . | CERAMICS INTERNATIONAL , 2025 , 51 (3) , 3960-3969 . |
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As monitoring techniques are increasingly used in extreme environments, performance in extremely cold regions becomes a critical issue for sensing materials and devices. Due to reduced polarity and poor polarization rotation under external fields, optimizing the piezoelectric response remains challenging. Herein, rhombohedral-orthorhombic-tetragonal (R-O-T) phase boundary was successfully formed at -50 to 50 degrees C, with decreased phase transition temperatures in potassium sodium niobate ceramics. High polarity and enhanced polarization rotation were revealed with the R-O-T phase boundary, which was attributed to the refined domain structure and lowered polarization anisotropy, both of which could flatten the polarization energy barrier. Consequently, large piezoelectric properties (d33 = 300-420 pC N-1, kp = 0.36-0.38), along with improved ferroelectricity, were achieved at -40 to 50 degrees C for the samples, which were superior to those of pure phase or rhombohedral-orthorhombic (R-O) phase boundary compositions. This study demonstrates a strategy for developing high-performance piezoelectric materials suitable for extremely cold regions, facilitating the application of monitoring techniques in plateau environments.
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GB/T 7714 | Tao, Hong , Liao, Chen , Liu, Zixin et al. High piezoelectric performance in KNN-based ceramics with multiphase coexistence for plateau climate applications [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2025 , 13 (20) : 10242-10250 . |
MLA | Tao, Hong et al. "High piezoelectric performance in KNN-based ceramics with multiphase coexistence for plateau climate applications" . | JOURNAL OF MATERIALS CHEMISTRY C 13 . 20 (2025) : 10242-10250 . |
APA | Tao, Hong , Liao, Chen , Liu, Zixin , Wu, Bo , Zhao, Chunlin , Wu, Wenjuan et al. High piezoelectric performance in KNN-based ceramics with multiphase coexistence for plateau climate applications . | JOURNAL OF MATERIALS CHEMISTRY C , 2025 , 13 (20) , 10242-10250 . |
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