DYES AND PIGMENTS
·
2025
·
IF 4.2
Tingye Gu,Qing Guo,Dongming Qi,Pu Gao,Weiguo Chen,Zhihua Cui,Sateesh Bandaru
N -hydroxysuccinimide esters (NHS esters) are widely recognized as amine-reactive compounds due to their mild reaction conditions and high efficiency. In this study, NHS ester group was introduced into the dye chromophores to design and synthesize carboxylic acid succinimidyl ester dyes ( CSED s) in red, yellow and blue colors. The CSED s were characterized using high-resolution mass spectrometry, proton nuclear magnetic resonance, and infrared spectroscopy. When the NHS ester group was introduced, UV–vis absorption spectroscopy only slightly affected the molar extinction coefficient and maximal absorption wavelength. Hydrolysis studies demonstrated that CSED s hydrolyzed slowly in acidic environments but quickly in weakly alkaline ones, with near-complete hydrolysis taking place at pH 8.5 after half an hour. It was discovered that CSED s could successfully dye silk fibroin at room temperature in weakly alkaline conditions, producing a high color depth and more than 95 % color fixing. The binding of CSED s to silk fibroin was confirmed through covalent bonds using DMF stripping method and dialysis method. Furthermore, the color fastness of dyed silk fibroin to washing and rubbing was rated above grade 4–5. Compared to commercial dyes, the milder dyeing conditions of CSED s can save energy and did not require a significant amount of salt to promote the dyeing process.
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Chemistry and Pharmacy
·
2024
·
IF 5.5
Xing Zhou,Ping-Yue Wang,Chen-Xi He,En-Jang Liu,Xiao-Hui Yao,Dong-Yang Zhang,Tao Chen
Recently, continuous-fluid catalysis technology has been widely used in biocatalysis. However, the poor stability of the reactor-supported enzyme and expensive manufacturing cost of the reactor restrict its use. Herein, a wood-based bioreactor, β-glucosidase@ zeolitic imidazolate framework-8@delignified wood (β-Glu@ZIF-8@DW), with attractive features was developed. The naturally oriented channels of the xylem-based reactor enable high throughput. The interference of the fluids through the porous inner walls in the directional channels of the xylem-based reactor considerably increased the probability of contact between the substrate and enzyme. Resveratrol with multifaceted biological activities exists in many plants, including Mulberry (Morus spp., Moraceae) and Camellia sinensis and Polygonum cuspidatum (P. cuspidatum) . However, it mainly presents in its glycosylated form (polydatin) rather than as free resveratrol in plant. To improve the acquisition of resveratrol, continuous convert polydatin into resveratrol by a bioreactor is a good strategy. The conversion rate of polydatin using the as-prepared reactor reached 98.98% in 2 h. The uniform distribution of β-Glu@ZIF-8 in the channel increased the stability of the bioreactor with an 80.28% conversion rate after seven cycles. The reactor provided an excellent strategy for continuous catalysis, which can be used for industrial production with low synthesis costs and high mass transfer efficiency. Therefore, it has great potential for commercial applications.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Jinxin Fu,Changrong Zhou,Jinfang Cai,Qingning Li,Changlai Yuan,Jiwen Xu,Guanghui Rao
To meet the demands of aerospace and other fields for stable performance of piezoelectric ceramics in high-temperature environments, ensuring consistent performance across a wide temperature range has become a critical issue to address. This study developed composite ceramics by combining BNT-7BT and BNT-20BKT, both exhibiting morphotropic phase boundary (MPB) characteristics and similar piezoelectric coefficients. The multiphase coexistence in these ceramics preserved high piezoelectric performance ( d 33 ∼162pC/N) while minimizing the adverse effects of quenching on d 33 . The compositional gradient induced by inhomogeneous diffusion pinned domain walls, thereby suppressing domain disordering at high temperatures and effectively restricting the fluctuation of d 33 to ≤11.5% across the operational temperature range until depolarization. The quenching-induced thermal gradient generated a built-in electric field (E b ) that effectively compensated the depolarization field (E d ), enabling the composite ceramics to achieve an ultrahigh depolarization temperature ( T d ) of 195 °C. This work successfully integrates high d 33 , T d , and thermal stability in BNT-based ceramics, offering a promising solution for high-temperature applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yongmin Duan,Shugang Li,Keyi Gu,Zhaojing Kuang,Juan Du,Junjie Zhang
Scalable and passive surface passivation strategies are essential for improving the durability and performance of perovskite quantum dot (PQD) glass materials , making them suitable for real-world optoelectronic technologies. In this study, we report a spontaneous, water-assisted surface evolution process in CsPbBr 3 PQD glass, where ambient moisture induces the gradual formation of PbBr(OH) nano-phases on the glass surface over a period of four years. This self-grown passivation layer effectively enhances the material's photoluminescence performance, boosting the photoluminescence quantum yield from 20 % to 93 % without any external treatment. Detailed structural, optical, and spectroscopic analyses confirm that the PbBr(OH) phase mitigates surface defects and suppresses non-radiative recombination. Density functional theory calculations suggest that the wide bandgap of PbBr(OH) nano-phases helps confine charge carriers within the CsPbBr 3 PQDs, further enhancing luminescence efficiency. The resulting PQD glass demonstrates remarkable stability against air, thermal, and UV exposure, making it ideal for long-term applications in solid-state lighting and other optoelectronic systems. This work offers a cost-effective, passive, and potentially scalable method for improving the performance of perovskite-based materials, with significant implications for their integration into durable and high-performance devices.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Yuzhen Dang,Yurong Wu,Zhe Xu,Jianxing Wang,Runguo Zheng,Zhishuang Song,Zhiyuan Wang,Xiaoping Lin,Yanguo Liu,Dan Wang
O3-type layered oxide cathodes for sodium-ion batteries are promising owing to high theoretical capacity and broad temperature adaptability, yet hindered by structural degradation and sluggish Na + diffusion kinetics. Herein, we present a sodium-deficient high-entropy layered oxide cathode (Na 0.85 Ni 0.3 Mn 0.3 Fe 0.1 Co 0.15 Ti 0.1 Cu 0.05 B 0.02 O 2 , denoted as Na0.85-HEO), combining sodium content optimization and high-entropy composition design. Incorporating six transition metals and light element boron creates a unique high-entropy configuration, effectively mitigating local lattice distortion and internal strain through chemical disorder effects, thereby enabling highly reversible phase transitions (O3-P3-O3) and smaller volume change (0.6 Å 3 ) during the initial cycle. The sodium-deficient high-entropy design effectively increases the sodium interlayer spacing to 0.322 nm, facilitating the Na + diffusion kinetics. Moreover, this high-entropy strategy enables the cathode to have a completely solid solution charge curve and significantly reduces the proportion of (O 2 ) n − , thereby suppressing gas release during the cycling process. The resultant cathode demonstrates exceptional cyclability (80% capacity retention after 400 cycles at 100 mA g −1 in a full cell), and remarkable low-temperature performance (108.6 mAh g −1 at −40 °C). This work guides the design of high-entropy electrode materials with tailored ionic transport channels for extreme-temperature energy storage applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wei Zhao,Shao-Hua Luo,Yicheng Lin,Guodong Hao,Rui Huang,Pengyu Li,Ge Wang,Jun Cong,Shengxun Yan,Lixiong Qian
P2-type Fe/Mn base oxide cathodes arouse much attention in sodium-ion batteries due to their high theoretical specific capacity, economic feasibility , and environmental friendliness . However, detrimental phase transitions and irreversible oxygen release result in continuous capacity decay, thereby posing a significant challenge to the simultaneous achievement of high capacity and high stability. To address this challenge, the optimal Na 0.67 Mg 0.06 Li 0.06 Fe 0.28 Mn 0.6 O 2 (NMLFM-2) cathode material , was developed in this study, which realizes a complete solid solution process and a stable oxygen redox reaction within the voltage window of 2–4.2 V. The introduction of Mg and Li realizes the “rich-Na e ” effect, which raises the valence state of Mn, thereby stabilizing the oxygen redox reaction and reducing the Jahn-Teller effect of Mn 3+ . The elimination of the unfavorable P2 to OP4 phase transition achieves a complete solid solution reaction, enhancing the structural stability and Na + fast reaction kinetics of the material. Thus, the NMLFM-2 cathode delivered a high initial specific capacity of 160.3 mAh g −1 at 0.1C within the voltage range of 2–4.2 V, realizing an impressive cycling performance with 89.3% capacity retention after 200 cycles at 1C. This study presents a novel pathway for simultaneously achieving structural stability and reversible oxygen redox, thereby enabling the trade-off between cathode capacity and stability in Fe/Mn-based layered oxides.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Xianze Li,Yue Zhong,Tao Su,Yang Li,Wenming Wang,Jing Xie,Chao Wang,Yan Pan,Xiantao Wei,Yong Li
The advancement of White light emitting diodes (WLEDs) drives the demand for efficient red-emitting phosphors with superior thermal stability. In this paper, a series of Sr 3 TaGa 3 Si 2 O 14 : Sm 3+ phosphors with excellent thermal properties were successfully synthesized via high-temperature solid-phase method. The crystal structure, luminescent properties and thermal stability of the samples were systematically investigated. Under 402 nm near-ultraviolet excitation, the fluorescence emission spectra of Sr 3 TaGa 3 Si 2 O 14 : Sm 3+ with different doping concentrations were obtained, and the optimal Sm 3+ doping concentration was found to be 0.03 mol. Co-doping with M ( M = Li + , Na + , and K + ) as charge compensation ions can improve the luminescent performance of Sr 3 TaGa 3 Si 2 O 14 : Sm 3+ . Furthermore, the luminescent intensity ( 4 G 5/2 → 6 H 7/2 ) of this phosphor at 420 K remains at 74.2 % of its initial temperatures (300 K), demonstrating excellently thermal stability. The temperature sensing characteristics based on Fluorescence Intensity Ratio (FIR) technique was investigated and the maximum absolute and maximum relative sensitivities of the Sr 3 TaGa 3 Si 2 O 14 : 3 mol% Sm 3+ samples were 6.52 % and 0.80 %, respectively. In addition, the quantum yield of Sr 3 TaGa 3 Si 2 O 14 : 3 mol% Sm 3+ , 3 mol% Na + was measured to be 44.0 %, and the WLEDs fabricated with it could emit bright white light with CIE chromaticity coordinates of (0.28, 0.33). Therefore, the synthesized phosphors have great potential for applications in optical temperature measurement and solid-state lighting.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiangshuai Wang,Mengwei Tian,Zihao Zheng,Jinming Guo,Ji Zhang,Kongjun Zhu,Jing Wang
Dielectric capacitors have been widely employed in advanced pulse power technology and electronic devices. Nevertheless, the insufficient recoverable energy storage density and efficiency pose a major obstacle for realizing further miniaturization and integration. Herein, multilayer structured NaNbO 3 -based ceramics, composed of random and textured layers with identical chemical compositions, were prepared via the tape casting technique. As a result, in the sample with two random layers outside and one textured layer in middle, a remarkable recoverable energy storage density of 11.9 J/cm 3 with an efficiency of 76.8 % is achieved concurrently at an electric field of 728 kV/cm. The finite element simulation implicates that this approach effectively tunes local electric potential, electric field and polarization distributions. More importantly, the investigated ceramics exhibited benign stability over a wide temperature range (20–100 °C), frequency range (1–500 Hz) and cycling up to 10 5 cycles. This work not only provides a multilayer structured ceramic applicable to novel high-performance dielectric capacitors, but also proposes a feasible strategy for regulating the local electric field and polarization distributions and finally boosting the energy storage performance.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Min Long,Guomin Wu,Fenghua Tao,Shuai Ma,Xiangyang Dong,Hongbing Deng
Bone tissue engineering scaffolds are an important means of repairing bone defects, but current solutions do not adequately simulate complex extracellular microenvironment fibrous structures and adjustable mechanical properties. We use template-assisted fiber freeze-shaping technology to construct silk fibroin nanofiber aerogels (SNFAs) with nanofibrous textures and adjustable mechanical properties. The parallel arranged channels, the pores, electrospun nanofibers, and silk protein conformation together constitute the hierarchical structure of SNFAs. Especially, the introduced electrospun nanofibers formed a biomimetic nanofibrous texture similar to the extracellular matrix, providing favorable conditions for cell migration and tissue regeneration. In addition, Young's modulus of SNFAs can be adjusted freely between 7 and 88 kPa. The rationally designed 3D architecture makes SNFAs perfectly mimic the fiber structure of the extracellular matrix and can adjust its mechanical properties to match the bone tissue perfectly. Finally, fiber-containing SNFAs observably promoted cell adhesion, proliferation, and differentiation, accelerating the bone repair process. The bone density in the defect area reached 0.53 g/cm 3 and the bone volume/total volume (BV/TV) ratio reached 57 % at 12 weeks, respectively. It can be expected that this kind of tissue engineering scaffold with highly simulating extracellular matrix microenvironment and adjustable mechanical properties will possess broad prospects in the field of bone repair.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Molecular Catalysis
·
2026
·
IF 4.3
Minghao Geng,Jiahao Li,Zhengze Li,Meng Sui,Fashe Li,Hua Wang,Zhiyu Hua
Fe-modulated Cu-ZnO CeO 2 catalysts were synthesized via sol-gel method. • Moderate Fe doping suppressed CuO growth and improved Cu dispersion. • Fe tuned the interface and oxygen defects to balance reducibility. • Fe10-CZCe achieved 14.5% CO 2 conversion with high methanol selectivity. • The promotion by Fe stems from interfacial regulation, not new phases. Copper-based catalysts have been widely applied in methanol synthesis from CO 2 hydrogenation. Yet efficient operation at an industrially relevant level remains challenging. The use of CO 2 as a carbon source is still limited by difficult molecular activation and by imperfect interfacial matching. Here, a series of Fe-doped Cu-ZnO CeO 2 catalysts was prepared by a sol-gel route. The influence of Fe content on phase structure, surface electronic environment, reduction behaviour, CO 2 adsorption characteristics and catalytic performance was examined systematically. Fe incorporation did not change the fundamental phase composition of CuO and CeO 2 . It did, however, strongly affect Cu dispersion, the near-surface defect environment of CeO 2 , and the electronic structure of the interface. Moderate Fe addition suppressed CuO crystallite growth, improved Cu dispersion, and produced a more concentrated reduction profile with a more suitable distribution of CO 2 adsorption strength. Excess Fe enhanced defect-related signals and high-temperature adsorption, but also increased interfacial perturbation, which was unfavourable for the further conversion of intermediates. At 3 MPa and 260 °C, Fe10-CZCe showed the best overall performance, giving a CO 2 conversion of 14.5% together with high methanol selectivity and the highest methanol space-time yield. The beneficial role of Fe is therefore linked to reconstruction of the Cu-ZnO CeO 2 interface, which promotes a more effective balance between CO 2 adsorption, activation and hydrogenation. These findings provide a useful perspective for compositional tuning and interface design in Cu-based catalysts. Download: Download high-res image (231KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Tianyu Hu,Fang Zou,Jie Yu,Siqian He,Shiyun Lai,Yuanjie Teng,Zaifa Pan
UNCA employs upconversion nanoparticles as signal probes for specific IGF-1 recognition. • Single-molecule counting enables IGF-1 detection with a low LOD of 6.04 pg/mL. • This method exhibits low cross reactivity and good recovery rates in milk products. There is rapidly growing interest in food nutrition assessment, particularly for nutrients present at low abundance. Here, an upconversion nanoprobe counting analysis (UNCA) is designed for ultra-sensitive detection of insulin-like growth factor-1 (IGF-1). The high sensitivity is attributed to the strong fluorescent intensity of upconversion nanoparticles (UCNPs) and highly specific antibody-antigen binding. Core–shell structured UCNPs are synthesized via co-precipitation followed by layer-by-layer epitaxial growth, and detection probes are constructed through hydrophilic ligand exchange and antibody conjugation. Two detection methods, traditional fluorescent intensity detection and single-molecule counting, are established with linear working ranges of 0.05–5000 ng/mL, which reach limit of detections (LODs) of 21.23 and 6.04 pg/mL, respectively. UNCA is further employed for analyzing three representative milk products, achieving recovery of 73.90%–107.09% with coefficients of variation (CVs) between 2.24% and 7.57%. This method demonstrates quantitative detection of trace-level IGF-1, especially via single-molecule counting. Download: Download high-res image (111KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xingyue Yang,Qi Wang,Xianchang Ning,Di Wu,Zhiling Guo,Zhangwen Long,Dacheng Zhou,Tao Han,Jianbei Qiu,Yuan-Hua Lin
Thermally enhanced upconversion luminescence has been widely reported in negative‑thermal‑expansion tungstates, whereas whether and how this phenomenon can occur in positive-thermal-expansion tungstates remains largely unexplored. Here we show that the thermal response of upconversion luminescence in monoclinic MIn(WO 4 ) 2 : 1%Er 3 + , 10%Yb 3+ (M=Li, Na, K) is strongly dependent on the alkali metal ion at the M site. Under 980 nm excitation, the green emission of the K‑containing sample (KIW) continuously increases up to 573 K without quenching, whereas the Li and Na samples show only a transient rise followed by thermal decay. Combining variable‑temperature XRD, XPS, EPR, DFT calculations, and luminescence decay measurements, we attribute this divergence to a competition between two temperature‑activated processes. Lattice distortion enhances radiative transitions by modulating the local crystal field around Er 3+ , while oxygen vacancies introduce nonradiative channels. KIW combines a flexible lattice that sustains continuous distortion with a high oxygen vacancy formation energy that suppresses defect generation, so radiative enhancement dominates across the whole temperature range. The Li and Na hosts, with more rigid lattices and lower defect formation energies, develop oxygen vacancies readily and their distortion saturates, leading to quenching at elevated temperatures. Using the distinct temperature responses of the 520 nm and 650 nm emissions in KIW, a ratiometric optical thermometer achieves an absolute sensitivity of 0.1052 K −1 . This work provides a mechanistic understanding of thermally enhanced upconversion in positive‑thermal‑expansion tungstates and demonstrates a structure‑based strategy for designing high‑temperature‑stable luminescent materials.
✓ 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）