Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 36
·18718-18726
·
IF 7.443
Gongzheng Yang,Huawei Song,Mingmei Wu,Chengxin Wang
Besides targeting low-voltage intercalation, NaTi2(PO4)3 (NTP) is a promising negative electrode material for non-aqueous sodium-ion batteries (SIBs). However, the low electronic conductivity of this material inhibits its potential applications. Herein, we report the controllable synthesis of four interesting porous NTP nanocubes via a one-pot solvothermal method. The as-synthesized products have shown excellent high-rate performance and cycling stability as SIB anodes. After 10 000 cycles at a 10C rate, 75.5% of the initial capacity is retained, which exceeds those of most of the reported SIB anode materials. Even at an extremely high rate of 100C, the NTP nanocubes can still deliver considerable reversible capacities after deep charging/discharging for 15 000 cycles. The superior electrochemical performances can be attributed to their unique nanostructures. We hope that such a finding of the new construction will enrich the NTP system and provide several possible candidates for SIB anodes.
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CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Na Liu,Zhangxing He,Xubo Zhang,Yingqiao Jiang,Yuehua Li,Jing Zhu,Wei Meng,Lei Dai,Ling Wang
In this paper, Li 1−x Na x Ti 2 (PO 4 ) 3 @carbon (x=0.01, 0.03, and 0.05) composites as anode for aqueous lithium ion batteries were synthesized by in situ coating approach. The doping of Na on Li sites did not break the lattice structure of LiTi 2 (PO 4 ) 3 , while the lattice volume was increased by doping of Na. Among Na-doped LiTi 2 (PO 4 ) 3 @carbon composites, Li 0.97 Na 0.03 Ti 2 (PO 4 ) 3 @carbon (LC-Na-3) demonstrated the best electrochemical properties . Compared with the pristine LiTi 2 (PO 4 ) 3 @carbon (LC) composite, LC-Na-3 composite exhibited better rate and cycling performance. LC-Na-3 composite delivered the discharge capacity of 98.5 mAh g −1 at 0.2 C and 45.0 mAh g −1 at 15 C, 10.9 mAh g −1 and 32.1 mAh g −1 larger than that of LC composite, respectively. Moreover, the discharge capacity retention for LC-Na-3 composite achieved 90.4%, 6.9% higher than that for LC composite at the rate of 2 C after 300 cycles. The improved electrochemical properties of Na-doped LiTi 2 (PO 4 ) 3 @carbon composite was ascribed to the decrease of charge transfer resistance and the acceleration of diffusion of lithium ions , resulting from the widening of diffusion channel for lithium ions, which was verified by XRD measurements.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Shi-Ye Luo,Xiao-Tong Fan,Na-Li,Lei-Li,Yan-Xiang Bi,Li-Peng Du,Guang-Gang Xiang,Xiang-Xin Li,Xiao-Ming Fang
Kaempferol-3-O-sophoroside was a marker of Gentiana macrophylla Pall. • monofloral honey (GH). • SEM and UHPLC–DAD-QTOF-MS/MS enabled reliable botanical authentication of GH. • GH was enriched in flavonoids and phenolics compared with common honeys. • GH exhibited significant antioxidant and antibacterial activities. As a medicinal plant–derived honey, Gentiana macrophylla Pall. monofloral honey (GH) remains insufficiently characterized in terms of botanical authentication and characteristic chemical markers. The objective of this study was to identify a marker compound for GH and to evaluate the physicochemical characteristics and bioactive properties. The botanical origin of GH was verified by SEM observation, revealing that Gentiana macrophylla Pall. pollen grains are monad, isopolar, radially symmetrical, with a tricolporate aperture system. Kaempferol-3-O-sophoroside was identified as a potential characteristic compound by UHPLC–DAD-QTOF-MS/MS, with a content of 331.06 ± 19.96 μg/kg in GH. Due to the abundant total flavonoid (34.98 ± 0.31 mg Rutin/kg) and total phenolic contents (283.68 ± 3.07 mg GAE/kg) compared with other common commercial honeys, GH exhibited significant antioxidant capacity and antibacterial activity against E. coli MG1655 and S. aureus 23,923. Consequently, kaempferol-3-O-sophoroside, as a potential authentication marker for GH, contributes to the improvement of bioactivity. Download: Download high-res image (207KB) Download: Download full-size image
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Frontiers in Chemistry
·
2019
·
IF 3.782
Yan Huihui,Xiao Xu-Qiong,Hider Robert C.,Ma Yongmin
A new series of 3-substituted 4-methylene-quinazolinthiones and 4-methylene-quinazolinones were synthesized in moderate to excellent yield through a simple reaction of 2-aminoacetophenones with isocyanates or isothiocyanates. The reaction shows good tolerance of many important functional groups in the presence of air and water under metal-free conditions. Only water is produced as a coproduct, rendering this “green” methodology a highly versatile and eco-friendly alternative to the existing methods for the construction of the quinazolinone/quinazolinthione framework. We have interpreted the reaction mechanism by use of quantum chemical calculations on the basis of state-of-the-art computational methods SMD-B3LYP-D3(BJ)/BS1//B3LYP/BS1.
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PubMed
高影响因子
iScience
·
2023
·
IF 5.8
Shi-Jun Wang,Long Wang,Xiang-Ying Tang
B(C 6 F 5 ) 3 ·H 2 O has been long recognized as a common Brønsted acid. The lack of X-ray crystal structure of B(C 6 F 5 ) 3 ·H 2 O with other substrates has greatly limited the development of a new catalytic mode. In this work, a complex of B(C 6 F 5 ) 3 ·H 2 O and amide 2-phenyl-3,4-dihydroisoquinolin-1( 2H )-one with hydrogen bonds and π-π interactions is characterized by X-ray diffraction. Such noncovalent interactions in solution also exist, as verified by NMR, UV-Vis absorption, and fluorescence emission measurements. Moreover, the mixture of amide 2-phenyl-3,4-dihydroisoquinolin-1( 2H )-one and B(C 6 F 5 ) 3 ·H 2 O, instead of other tested Brønsted acids, shows a tailing absorption band in the visible light region (400–450 nm). Based on the photoactive properties of the complex, a photoredox catalysis is developed to construct α -aminoamides under mild conditions.
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International Journal of Minerals Metallurgy and Materials
·
2026
·Vol. 33
·期 6
·1886-1899
·
IF 8.8
Zeng Yong,Che Xiyuan,Zhang Lei,Chen Peng,Song Shaoxian,Wang Deshou,Jia Feifei
Thiosulfate gold extraction technology has gained considerable interest owing to its environmental compatibility and broad applicability to diverse ore types. However, the lack of efficient methods to recover Au(S 2 O 3 )
3− 2
from leaching solutions has hindered its industrial implementation. To address this challenge, this study used a thiosulfate leaching solution from quartz-type gold ores to design an activated carbon-coated titanium electrode (Ti@AC) with a porous surface structure. This electrode facilitated the direct reduction of low-concentration Au(S 2 O 3 )
3− 2
to metallic gold (Au 0 ) in solution, achieving a gold recovery of 99.58%, surpassing other recovery methods from the leaching solution by 30%–80%. After ten consecutive 200 L pilot-scale tests, the Ti@AC electrode demonstrated remarkable stability, consistently maintaining a recovery >98% and yielding 20.23 g of gold. The porous architecture of the activated carbon (AC) promoted the adsorption of low-concentration Au(S 2 O 3 )
3− 2
, while its low charge transfer resistance facilitated the efficient conversion of Au(S 2 O 3 )
3− 2
to Au 0 . Moreover, the reduction reaction generated a concentration gradient near the cathode, promoting the diffusion of Au(S 2 O 3 )
3− 2
toward the electrode and ensuring an efficient recovery process. This study provides a feasible strategy for the direct reduction of low-concentration precious metal ions to monomers with high recovery and low costs, which is promising for industrial applications.
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产品关联
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JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
·
2026
·
IF 3.4
Bo Zhou,Xiushang Ye,Yuan Tian,Xintong Wang,Xiaozhang Xu,Yi Ren
Acetaminophen (APAP)-induced liver injury is a major cause of acute liver injury (ALI). Indole-3-propionic acid (IPA), a gut microbiota–derived tryptophan metabolite with potent anti-inflammatory and antioxidant properties, has not been fully explored for its therapeutic potential in APAP-induced ALI. APAP-induced liver injury is often accompanied by dysregulation of both the gut microbiota and the intrahepatic immune system. In our study, IPA levels were markedly reduced in the ALI model, reflecting impaired gut tryptophan metabolism. In vitro and in vivo experiments demonstrated that IPA mitigates cytotoxicity, reduces hepatocyte apoptosis, and alleviates liver inflammation, thereby conferring significant hepatoprotective effects. The aryl hydrocarbon receptor (AhR), a key mediator of IPA’s effects, was substantially downregulated in APAP-induced ALI and negatively correlated with serum AST and ALT levels, suggesting that AhR may serve as a potential early biomarker for APAP-induced hepatotoxicity. Notably, IPA treatment restored hepatic and serum AhR expression and attenuated liver injury. Collectively, these findings underscore the critical role of IPA in modulating AhR signaling and highlight its therapeutic potential in APAP-induced ALI.
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 37
·27680-27697
·
IF 4.4
Jiang Bo,Zhang Zheting,Yu Hang,Dai Kai,Jiang Kai
NaNbO \(_{3}\) , as a typical lead-free perovskite ferroelectric, holds great potential for energy storage and electromechanical applications, whereas the synergistic regulation of lattice dynamics by La doping, temperature, and pressure remains poorly understood. Here, we systematically investigate La \(^{3+}\) -doped NaNbO \(_{3}\) ceramics via Rietveld refinement and multi-stimuli Raman spectroscopy. La \(^{3+}\) substitution induces lattice distortion and oxygen vacancies, driving a structural transition from an ordered orthorhombic ferroelectric phase to a disordered ergodic relaxor state, where \(\textit{x}\) = 0.08 serves as a metastable boundary with maximal lattice disorder and superior external-field sensitivity. Temperature-dependent Raman results reveal a successive \(\textrm{NR} \rightarrow \textrm{ER} \rightarrow \textrm{SPE}\) structural evolution, while variable-pressure Raman identifies a unique B-site order–disorder–reorder transition, with the \(\textit{x}\) = 0.08 composition exhibiting distinctive two-stage softening–hardening behavior. The established temperature–composition phase diagram enables systematic dielectric performance optimization, and the emergent metastable state at \(\textit{x}\) = 0.08 provides a critical structural guideline for designing high-performance lead-free ceramics for energy storage, sensing, and actuation applications.
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高影响因子
BIOPROCESS AND BIOSYSTEMS ENGINEERING
·
2026
·
IF 4.3
Shen Ji-Dong,Zhang Meng,Li Meng-Yang,Dong Yu-Qi,Liu Zhi-Qiang,Zheng Yu-Guo
Omega-3 polyunsaturated fatty acids (n-3 PUFAs) offer therapeutic benefits, including triglyceride reduction and management of cardiovascular and neurological disorders. This study investigates the use of fish oil processing by‑products, which consist mainly of fatty acid methyl and ethyl esters, as novel substrates for n‑3 PUFAs production. To overcome the low efficiency of conventional chemical methods and the vulnerability of free lipase to alcohol toxicity and poor reusability, we developed a stable immobilized lipase system. The target enzyme (CALB) was immobilized onto macroporous resin LXTE‑1000 via adsorption‑crosslinking, and optimal hydrolysis conditions were determined. The resulting immobilized enzyme (LXTE‑1000@CALB) showed markedly enhanced thermal and operational stability, retaining approximately 64.21% of its initial hydrolysis degree over ten consecutive batches. This work provides an efficient, green, and sustainable approach for valorizing fish oil by‑products and producing n‑3 PUFAs. Graphical abstract
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Junchen He,Yuanchan Luo,Hui Wu
3-Hydroxypropionic acid (3-HP) is a versatile platform chemical with broad applications in biodegradable plastics and superabsorbent polymers. Acetate derived from waste biomass and industrial off-gases can serve as a sustainable C2 feedstock for 3-HP production. However, the efficient conversion of acetate to 3-HP remains constrained by insufficient intracellular bicarbonate supply and competition with fatty acid biosynthesis for malonyl-CoA. To address these issues, carboxylation efficiency was enhanced in E. coli by co-expressing carbonic anhydrase (CA) with sodium-dependent bicarbonate transporters (BicA) and supplementation with sodium bicarbonate. Further overexpression of fabF was used to inhibit the initiation of fatty acid biosynthesis, reducing competition for malonyl-CoA. The engineered strain achieved a 3-HP yield of 0.73 g/g in shake flask culture, approaching the theoretical maximum without chemical inhibitors. In a fed-batch bioreactor, the 3-HP titer reached 20.55 g/L with a yield of 0.56 g/g (0.37 mol/mol), corresponding to 74.67% of the theoretical maximum yield. This bioprocess enables efficient valorization of sustainable C2 feedstocks, offering a promising pathway for the industrial production of bio-based platform chemicals.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Xuewei Lang,Yuchang Wang,Jiaqi Zang,Xiyue Ma,Zhengtong Zhu,Feng Wei,Yun Li,Jianbin Zhang
Density and viscosity of a 1,3-butanediol (1,3-BDO) and 3-diethylaminopropylamine (DEAPA) binary system with various molar ratios were measured at atmospheric pressure and a temperature range from 298.15 to 318.15 K. Based on density and viscosity data, the relationship between the system’s density and temperature/composition was studied using the Jouyban–Acree model and nonlinear least-squares. To discuss the connection between the viscosity and molar fraction, the McAllister three-body model, the McAllister four-body model, the Eyring–Margules viscosity model, and the Heric viscosity model were used. The dependence of viscosity on temperature is characterized by the Arrhenius equation. Furthermore, the excess properties (excess molar volume, viscosity deviation, and excess activation Gibbs free energy) of the binary system were fitted using the Redlich–Kister equation. Activation thermodynamic properties (Gibbs free energy, enthalpy, and entropy) of the binary system were calculated. As demonstrated by findings from Raman spectroscopy, nuclear magnetic resonance spectroscopy, fluorescence spectroscopy, and density functional theory calculation, further evidence confirms intermolecular hydrogen bonds in the binary system in the form of –OH···N(H2)–. Finally, the CO2 absorption capacities of the pure components and binary system were measured separately, indicating that adding 1,3-BDO to DEAPA significantly enhances CO2 uptake and provides a promising method for CO2 capture.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Zilong Fang,Qi Fan,Anyang Yu,Wei Zhou,Junwei Luo,Changhao Zhu,Xinguantong Zhou,Xiao Yu,Qingyu Xu
Achieving uniform ion flux both at the interface and in the matrix simultaneously remains a challenge with current liquid/solid electrolytes. Herein, we demonstrate a novel strategy to address the issue by designing and synthesizing a polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) based ternary hybrid electrolyte (PTHE). In this unique material architecture, each component synergistically serves a specific purpose: The PVDF-HFP-Zn(OTF) 2 serves as the stable electrolyte skeleton, providing the ion transport network. The Cu-MOF regulates the Zn 2+ solvation structure and anion distribution, achieving uniform ion flux in the electrolyte matrix. Moreover, the thin liquid electrolyte film at the interface promotes ion transport and stabilizes the electrode-electrolyte interface. The PTHE exhibits balanced high performance with respect to cycling stability (3200 h at 0.2 mA cm −2 ) and excellent capacity retention when paired with the Na 3 V 2 (PO 4 ) 3 (NVP) cathode (0.0029 % capacity decay per cycle after 2000 cycles at 0.5 A g −1 ), alongside uniform Zn metal deposition and effective dendrite suppression. Furthermore, the PTHE based NVP-Zn metal quasi-solid battery demonstrates outstanding flexibility (enduring 1000 bending cycles with less than 10% decrease in capacity retention), owing to the existence of the thin liquid electrolyte film. This work provides a novel strategy for developing highly stable flexible NVP-Zn metal quasi-solid batteries by synergistically optimizing ion flux both at the interface and in the matrix.
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