Journal of Energy Chemistry
·
2024
·
IF 14
Siying Zhao,Xiaotong Liu,Yulan Wang,Haoqing Tang,Tian Tian,Yizhi Yue,Qiang Weng,Tao Liu
Furious dendritic growth and destructive parasitic reactions (hydrogen evolution reaction, corrosion, and passivation) severely degraded the development of aqueous Zn-ion batteries (AZIBs) in the field of grid and stationary energy storage. Herein, trace amount of tetracycline hydrochloride (TC-HCl) additive (only 0.5 mM) is employed as a mediator to steer a stable Zn anode-electrolyte interface. Informed by theoretical calculations and experiment analysis, TC molecule with zincophilic groups can remodel the solvation sheath and disrupt H-bonds network due to its high electronegative O atoms, which effectively expedites the desolvation process and reduces the electrochemical activity of solvent water. Additionally, the TC molecules are preferentially adsorbed on the Zn electrode than active water molecules, which are beneficial for steering uniform nucleation and restricting the erosion of electrode. Benefitting from these synergistic effects, the Zn//Zn symmetric cell containing TC-HCl additive exhibits an ultra-long cycle life of exceeding 2200 h at 1.0 mA cm −2 and 1.0 mAh cm −2 . Accordingly, the practical Zn//α-MnO 2 full cell using the modified electrolyte also demonstrates the enhanced performance. This study provides valuable insights into the widespread use of trace electrolyte additives and facilitates the industrialization of AZIBs with long lifespans.
研究领域:
材料科学
·
电化学
·
能源存储
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高影响因子
TETRAHEDRON-ASYMMETRY
·
2014
·Vol. 25
·期 23
·1520-1526
·
IF 2.165
Yong-Ming Sun,Zhong-Yuan Xu,Li-Juan Liu,Fan-Jie Meng,He Zhang,Bao-Ci Fu,Li-Jun Sun,Mei-Ju Niu,Shu-Wen Gong,Chang-Qiu Zhao,Li-Biao Han
The hydrophosphorylation of aldehydes with a P -stereogenic H -phosphinate was realized by heating two compounds in a neat state or catalyzed by a base , to afford P -retention α-hydroxyl phosphinates. The ( S P , S C ) and other diastereomers were isolated, and their structures were confirmed by NMR spectroscopy and crystallography.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Hang Che,Yuhao Wu,Xinhua Wang,Haizhen Liu,Mi Yan
The Mg(NH 2 ) 2 -2LiH system is considered as one of the most potential hydrogen storage materials due to its high hydrogen storage capacity (5.6 wt%) and excellent reversible hydrogen adsorption and desorption performance. However, its poor kinetic characteristics of hydrogen absorption and desorption limit its practical application. In this work, Li 3 VO 4 @LiVO 2 was synthesized by a hydrothermal method , and was then introduced into Mg(NH 2 ) 2 -2LiH system to enhance the hydrogen absorption and desorption kinetic characteristics. The results show that the hydrogen storage properties were greatly improved with addition of 10 wt% Li 3 VO 4 @LiVO 2 addition. As for the hydrogen absorption and desorption kinetics, the average hydrogen absorption rate of 10 wt% Li 3 VO 4 @LiVO 2 modified Li-Mg-N-H sample within 20 min at 200 ℃ increased by 95.2% compared with that of the pristine Li-Mg-N-H sample, and the average hydrogen desorption rate of 10 wt% Li 3 VO 4 @LiVO 2 modified sample within 30 min at 180 ℃ increased by 42% compared with that of the pristine sample. The E a of hydrogen desorption decreased from 117.86 kJ/mol to 99.43 kJ/mol, which also indicates that Li 3 VO 4 @LiVO 2 catalyst effectively improved the kinetic performance of hydrogen desorption and desorption of Li-Mg-N-H. Moreover, the hydrogen desorption capacity and hydrogen absorption capacity of 10 wt% Li 3 VO 4 @LiVO 2 modified Li-Mg-N-H increased by 18.4% and 13.8% compared with that of the pristine sample. The catalytic mechanism of Li 3 VO 4 @LiVO 2 was discussed based on XRD , XPS and FTIR analysis results.
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高影响因子
JOURNAL OF ORGANOMETALLIC CHEMISTRY
·
2024
·
IF 2.1
Chao-Chao Teng,Yan Guo,Ke Cao,Han-Bo Yang,Qi-Jia Jiang,Dao-Yong Zhu,Shao-Hua Wang
A palladium catalyzed selective arylation of B(4)-H of 9-amide- o -carborane with potassium aryltrifluoroborate has been developed. A series of B(4)-Ar-B(9)-amide- o -carborane derivatives decorated with diverse active groups have been synthesized with moderate to good yields as well as excellent selectivity. This work represents an unprecedented protocol for selective arylation of o -carboranes with potassium aryltrifluoroborates.
研究领域:
有机化学
·
金属有机化学
·
药物化学
·
材料科学
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DOI
高影响因子
FUEL
·
2026
·
IF 7.5
Xue Ma,Xianjie Wang,Jinhui He,Jingdong Gou,Yaning Zhao,Akang Liu,Shuo Feng,Louwei Cui,Huiyong Chen,Jun Yang,Liuyi Pan,Dong Li
The similarity in physical and chemical properties between ethylcyclohexane (ECH) and dimethylcyclohexane (DCH) isomers poses significant challenges for the effective separation of ECH from coal-derived C8 naphthenic oil. This study employed a model oil system comprising the three predominant components in C8 naphthenic oil: ECH, Cis-1,3-DCH, and Trans-1,3-DCH. The separation performance of H-beta zeolites with varying silica-aluminum ratios (SAR) was evaluated through static adsorption and dynamic breakthrough experiments. The results indicated that H-beta-55 (SAR = 55) demonstrated superior separation efficiency for ECH, attributable to its hierarchical microporous-mesoporous structure and moderate acidity. Specifically, H-beta-55 achieved an ECH/1,3-DCH selectivity coefficient of 3.7, an ECH adsorption capacity of 7.1 mg/g, and a pseudo-second-order adsorption rate constant of 0.67 g/(mg·min), which was 3.4–4.8 times higher than those observed for the 1,3-DCH isomers. In dynamic breakthrough tests, the ECH breakthrough endpoint (∼350 min) occurred approximately 150 min later than that of Cis-1,3-DCH (∼200 min). Ethylcyclohexane temperature-programmed desorption (ECH-TPD) experiments confirmed that physical interactions predominantly governed adsorption. Grand Canonical Monte Carlo (GCMC) simulations of molecular probability density distributions revealed that ECH (kinetic diameter ∼ 6.37 Å) preferentially accesses secondary pore channels to occupy high-density adsorption sites. In contrast, steric hindrance caused by the methyl groups of DCH isomers restricted them to the primary 12-membered ring main channels. These findings underscore the importance of fine-tuning the SAR of H-beta zeolites to optimize pore size distribution and acidity for efficient C8 naphthene separation. This work provides a molecular-level theoretical basis for designing advanced adsorbents for industrial-grade naphthenic oil separation processes.
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产品关联
DOI
高影响因子
RARE METALS
·
2014
·Vol. 33
·期 1
·86-90
·
IF 0.806
Zhu Xi-Lin,Han Shu-Min,Zhao Xin,Li Yuan,Liu Bao-Zhong
Hydrogen storage properties of 2LiNH 2 –MgH 2 – x NbH ( x = 0 and 0.05) composites and the catalysis of NbH on hydrogen sorption reaction of the Li–Mg–N–H system were investigated. Hydrogen sorption properties of 2LiNH 2 –MgH 2 system are effectively improved by adding NbH. Temperature programmed desorption results show the addition of NbH reduces the dehydriding onset temperature of 2LiNH 2 –MgH 2 system by 21 K. Approximate 3.62 wt% hydrogen in 2LiNH 2 –MgH 2 –0.05NbH composite is released following a 500 min at 433 K, whereas the amount of hydrogen desorption is only ~3.16 wt% for the pristine system under the same condition. The sample with NbH exhibits higher dehydriding rate compared with the pristine one. Moreover, hydrogen absorption rate increases by adding NbH into the 2LiNH 2 –MgH 2 system. Hydrogen absorption capacity of the samples with NbH is 3.23 wt% within 400 min, which is higher than that of pristine sample. Fine NbH particles homogeneously distribute in the 2LiNH 2 –MgH 2 –0.05NbH composite, and catalyze the hydrogen sorption reaction rather than reacts as a reactant into new compound.
研究领域:
材料科学
·
氢能
·
固态化学
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Wei Bao,Ming-Yang Shi,Pei-Zheng Liu,Hao Du,Zheng-Xuan Ni,Lin-Na Tian,Jia-Jia Zhao,Chao Shi,Li-Zhuang Chen
Molecular ferroelectric materials exhibit structural tunability and high flexibility, demonstrating significant potential in flexible electronics and wearable sensing applications. Herein, we use nonpolar piperidinium tetrafluoroborate PipBF4 (1, Pip+ = piperidine) as the precursor. We designed and synthesized an organic–inorganic hybrid ferroelectric, (4,4-DFPD)BF4 (2, 4,4-DFPD+ = 4,4-difluoropiperidinium), via H/F substitution strategy. Single-crystal structural analysis indicates that the introduction of fluorine atoms successfully induces symmetry breaking in the crystal structure, causing it to crystallize at room temperature in the ferroelectric space group Pca21. At the Curie temperature, the (4,4-DFPD)BF4 transitions from an ordered ferroelectric state to a disordered paraelectric state. This (4,4-DFPD)BF4 exhibits a phase transition temperature (Tc = 398 K), spontaneous polarization, and piezoelectric properties (d33 ≈ 28 pC/N). Based on the piezoelectric properties of (4,4-DFPD)BF4, we fabricated flexible composite films of (4,4-DFPD)BF4/PBAT PBAT = poly(butylene adipate-co-terephthalate). These films achieve mechanical-to-electrical energy conversion without additional polarization treatment, delivering an output voltage up to 4 V at the optimal composition. This flexible sensor can stably monitor various physiological signals ranging from large-scale human joint movements to minute vocal cord vibrations. It exhibits high durability, exceeding 2000 cycles.
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DOI
PubMed
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2025
·
IF 3.6
Huanhuan Cui,Chunyu Hu,Xiulin Qiao,Tiesheng Shi,Chao Chen,Wei Wei,Zu-Li Wang,Zhuoming Ma
An efficient visible-light-induced EDA strategy has been developed for constructing 3-difluoroalkylated quinoxalin-2(1H)-ones through the C–H difluoroalkylation of quinoxalin-2(1H)-ones with fluoroalkyl bromides. This transformation could provide a series of 3-difluoroalkylated quinoxalin-2(1H)-ones in moderate to good yields under mild and metal-free conditions. Mechanistic studies revealed that the formation of the EDA complex between fluoroalkyl bromide and TMEDA was essential to initiate this transformation.
研究领域:
有机化学
·
药物化学
·
光氧化还原催化
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DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118638
·
IF 6.3
Xueqi Gu,Xinyue Hu,Daheng Wu,Xian-Zong Wang,Jianxi Liu,Hong Yu,Cheng-Feng Du,Long Wang,Jun Yang
Yttria-stabilized zirconia (YSZ) is a promising candidate for abradable seal coatings (ASC) in aero-engines, yet its inherent high coefficient of friction (COF) limits further application. This study introduced dual solid lubricant phases consisting of graphene nanoplatelets (GNPs) and silica-coated hexagonal boron nitride (h-BN@SiO 2 ) with different mass fractions into YSZ, and their tribological performance was systematically evaluated from room temperature to 750 °C. The composite containing 15 wt% GNPs and 5 wt% h-BN@SiO 2 exhibited low and stable COF (below 0.3) and moderate wear rates. Notably, it achieved an ultra-low COF of 0.08 at 750 °C. This outstanding performance originates from the formation of a low-shear graphene/BN interlaced lamellar structure, while tribochemically formed silicate phases and molten boron oxide further enhance the overall tribological performance of the composite. This work proposes an effective design approach for the development of high-performance YSZ-based ASC materials across a broad temperature range.
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高影响因子
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2021
·
IF 3.981
Jingxin Gou,Silin Wang,Xu Li,Tian Yin,Haibing He,Yu Zhang,Xing Tang,Wei Xiao,Zhenzhong Wang
Drug microcrystal (MC) is an important category of long acting injections (LAIs), whose release profile is controlled mainly by particle size, crystal form, drug solubility , and other parameters. In this study, a polymeric H + depot composed of alginate was combined with drug MC using ginkgolide B (GB) as model drug to reduce the initial burst release of the drugs with elevated solubility in body fluid. The parameters of GB MC preparation by precipitation, including stabilizer type and amount, phase volume ratio, and stirring rate were investigated. And the particle size/distribution, particle morphology, crystallinity, in vitro release of optimized GB MC were characterized. The in vivo dissolution retardation effect of acidified alginate (SAA) was first confirmed by live imaging using fluorescein as probe. And the pharmacokinetic profiles of different GB MC-polymer blends were investigated by UPLC-MS/MS. The prepared GB MC was spherical-like particles with a mean particle size of 5.863 μm and a span value of 1.634. The crystallinity of GB MC was lowered by the precipitation process compared with that of the crude drug , which resulted in a faster in vitro dissolution with more than 90% of drugs dissolved in 20 min. When administered with SAA, an alginate amount-dependent reduction in C max (1243.5 ± 281.4 ng/mL of GB-SAA, 1:5, 820.9 ± 84.0 ng/mL of GB-SAA, 1:10, 2850.9 ± 1059.3 ng/mL of GB alone and 2476.9 ± 396.4 ng/mL of GB-HPMC E5, 1:10) and prolongation in T max (3.2 ± 1.1 h of GB-SAA, 1:5, 6.4 ± 2.2 h of GB-SAA, 1:10, 1.2 ± 0.45 h of GB alone and 1.4 ± 0.55 h of GB-HPMC E5, 1:10) was noticed, indicating the capability of polymeric H + depot in controlling GB release in vivo . In conclusion, the polymeric H + depot strategy influenced drug dissolution and outward drug diffusion sequentially to retard the initial burst release of drugs with elevated solubility in body fluid.
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产品关联
DOI
高影响因子
Marine Drugs
·
2021
·Vol. 19
·期 2
·79
·
IF 5.118
Hengju Ge,Di Zhang,Muran Shi,Xiaoyuan Lian,Zhizhen Zhang
In 2019, streptoglutarimide H (SGH) was characterized as a new glutarimide from the secondary metabolites produced by a marine-derived actinomyceteStreptomycessp. ZZ741 and shown to have in vitro antiglioma activity. However, the antiproliferative activity and potential mechanism of SGH against lung cancer cells have not yet been characterized. This study demonstrated that SGH significantly inhibited the proliferation of different lung cancer cells. In terms of mechanism of action, SGH downregulated cell cycle- and nucleotide synthesis-related proteins to block cell cycle at G0/G1 phase, reduced the expression levels of glycolytic metabolic enzymes to inhibit glycolysis, and downregulated the important cancer transcription factor c-Myc and the therapeutic target deubiquitinase USP28. Potent anticancer activity and multiple mechanisms indicated SGH to be a novel antitumor compound against lung cancer cells.Keywords:Streptoglutarimide H;lung cancer cells;antiproliferative activity;cell cycle block;glycolysis;USP28;c-Myc
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Rongxiu Guo,Xinyue Zhang,Ze-Nan Hu,Hong Li,Jianyi Gao,Jiaping Wang,Qionglin Liang,Xiaodong Li,Dun Niu,Hong-bin Sun
Hollow metal nanoparticles have attracted great interest in heterogeneous catalysis research due to their unique structures as nanoreactors. Here, we report hollow PtCu nanoparticles encapsulated in microporous silica shells (H-PtCu@SiO 2 ), which can serve as the nanoreactor with high catalytic activity and high stability. The H-PtCu@SiO 2 nanoreactor shows the state-of-the-art catalytic performance for the transfer hydrogenation of benzonitrile to dibenzylamine, which achieves up to 100% conversion and 99% selectivity in only 0.5 h. The void-confinement effect of H-PtCu@SiO 2 is crucial for the outstanding catalytic performance by encaging the reactants in the nanoreactor. The computation demonstrates the limiting diffusion effect of the silica shell toward the ammonia borane, thus reduces the concentration of reductant species and prolongs the lifetime of the intermediate imine to improve the selectivity of secondary amine. Moreover, the silica shells can effectively enhance the catalytic stability of the H-PtCu@SiO 2 nanoreactor.
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高影响因子
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