JOURNAL OF ALLOYS AND COMPOUNDS
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2020
·
IF 4.65
Zhaoqian Yan,Zhihao Sun,Kaicheng Yue,Anran Li,Lei Qian
Cobalt oxide (CoO) with high theoretical capacity is a potential anode material for lithium ion batteries (LIBs), however its application is limited by high cost and volume expansion. Considering the cheapness of Zn and advantages of bimetallic oxide compounds, CoO/ZnO nanoclusters immobilized on N-doped 3 D reduced graphene oxide (CoO/ZnO-NrGO) were constructed by facile solvothermal and freeze-drying method as the LIBs anode for improving lithium (Li) ions storage. Three-dimensional conductive network structure not only reduced the volume expansion of CoO and ZnO but also accelerated the transfer rate of Li ions. Besides, nitrogen doping provided more active sites for plentiful Li ions storage. Phase composition and microstructure of CoO/ZnO-NrGO were measured by X-ray photoelectron spectroscopy, transmission electron microscopy , Raman spectroscopy , X-ray diffraction and so on. Synchronously, electrochemical property of CoO/ZnO-NrGO was also tested. It was found that the specific capacity of CoO 1.2 /ZnO 0.6 -NrGO 6.78 was 1494 mA h g −1 at 0.1 A g −1 , higher that of other bimetallic oxides such as CoO–MnO, CoO–Co 3 O 4 , CoO–CoFe 2 O 4 and so on. The capacity of CoO 1.2 /ZnO 0.6 -NrGO 6.78 was maintained approximately 600 mA h g −1 at 2.0 A g −1 after 1000 cycles. Taking these advantages into account, composites of bimetallic oxides and carbon material with high specific capacity provide a novel idea for a new generation of LIBs.
研究领域:
材料科学
·
电化学
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高影响因子
CARBONATES AND EVAPORITES
·
2018
·Vol. 34
·期 3
·1131-1139
·
IF 0.947
Li Zhenxuan,Xiao Jiangtian,Huang Lidong,Xu Defu,Liu Dagang,Sun Xiaowen,Yu Luji,Wu Hongsheng
Succinic acid and l -malic acid are known to affect calcite dissolution/crystallization due to their tendency to adsorb on calcite’s surface. Taking into account the structural similarity among succinic acid, l -malic acid, and d -malic acid, a comparative study of their adsorption behavior on calcite was investigated for clarifying their adsorption mechanism. Kinetic results showed that l -malic acid adsorption reached equilibrium within 12 h, while succinic acid required 48 h. Results from the pH effect study showed that the strength of surface complex of succinic acid on calcite was weaker, even compared to its aqueous complex with Ca 2+ ion. Alternately, l -malic acid exhibited a much stronger surface complex strength, even compared to its aqueous complex with Ca 2+ ion. The adsorption isotherm results indicated that the saturated adsorption amount of l -malic acid was twice that of succinic acid, suggesting the surface complex of succinic acid may occupy a larger space on calcite surface compared to that of l -malic acid. Based on these results and those from previous studies, we proposed that succinic acid adsorption is through its two carboxyl groups binding to two adjacent surface sites (> Ca + ), and not only one. Also, l -malic acid adsorption occurs through one carboxyl group and one hydroxyl, which forms a “claw” on calcite surface. The similar adsorption behavior between l -malic acid and d -malic acid reinforces this proposition for l -malic acid adsorption mechanism. Our study will serve as good reference information to provide better understanding into the adsorption of other carboxylic acids on calcite.
研究领域:
地质学
·
化学
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高影响因子
CHEMICAL ENGINEERING COMMUNICATIONS
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2026
·
IF 2
Tongyang Wang,Rupeng Bu,Jun Han,Zhengping Wang
d-ribose, a key molecule in energy metabolism with wide applications in pharmaceuticals and functional foods, requires optimized crystallization for industrial production, where solubility is a critical thermodynamic parameter. Existing studies have limitations: narrow temperature ranges for solubility data (20–40 K) and insufficient understanding of how solvents affect solubility mechanisms. This study combines experimental and computational approaches: it measures d-ribose solubility in methanol, ethanol, 2-propanol, and 1-butanol across 293.15–333.15 K, analyzes the data, characterizes crystals formed in ethanol, and explores molecular interactions. Results show solubility follows the order: methanol > ethanol > 2-propanol > 1-butanol, increasing with temperature. Solubility differences correlate with solvent polarity, driven by hydrogen bonding interactions. Ethanol is identified as the optimal crystallization solvent due to moderate solubility, significant temperature sensitivity, and low toxicity. This work provides essential thermodynamic data and molecular insights for optimizing d-ribose production processes, while establishing a predictive framework for understanding functional sugar dissolution in alcoholic solvents.
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高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.5
Qianfeng Zhou,Huijie Li,Shengdong Zhang,Changhu Leng,Chuanya Li,Yongchao Wang,Chenyang Ma,Wanglei Wang,Xiaogang Fu,Lei Zhu,Tengshijie Gao,Cheng Wang,Li-Zhu Wu,Zhi-Jun Li
Ruthenium (Ru) catalysts are highly efficient in the hydrogenolysis of polyolefin waste, converting the waste into valuable alkanes. However, excessive C–C bond cleavage of strongly adsorbed olefin intermediates often leads to low-value byproducts, primarily methane (CH4). In this study, we developed a Ru–Ni bimetallic catalyst supported on silica (RuxNiy/SiO2) that directly modulates olefin intermediate adsorption to suppress CH4 formation during polyolefin hydrogenolysis. By alloying low-electronegativity Ni with high-electronegativity Ru, we shift the Ru d-band center through electron transfer from Ni, weakening the adsorption of olefin intermediates. This modification facilitates hydrogenation and desorption pathways while suppressing excessive C–C bond cleavage. The resulting catalyst achieved complete polyethylene (PE) conversion at 250 °C, with 96.9 wt% liquid product yield and only 2 wt% CH4 production. Gasoline- and diesel-range alkanes (C5–C22) accounted for 77.1 wt% of the products. Additionally, the catalyst demonstrated excellent performance with real-world single-use polyolefin products. This work provides a new approach for controlling intermediate adsorption in polyolefin recycling, offering a promising path to enhance the efficiency and selectivity of plastic recycling technologies.
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高影响因子
Small
·
2024
·
IF 13
Muhammad Hassan,Yi Tan Su,Sania Zafar Iqbal,Raziq Nawaz,Yucai Wang,Wei Jiang
Near-infrared-II (NIR-II) fluorescence imaging-guided photothermal therapy (PTT) represents a cutting-edge approach for precise tumor diagnosis and treatment, providing real-time therapeutic efficacy evaluation. However, a significant challenge lies in the creation of phototheranostic agents that provide robust imaging and efficient photothermal conversion. To address this, a donor- π -acceptor (D- π -A) structure heptamethine cyanine derivative, IR1116, that confers a strong intramolecular charge transfer effect is developed. To enhance its applicability, IR1116 is formulated with DSPE-PEG to create a water-dispersible NIR-II phototheranostic nanoheater, NP IR1116 . This nanoheater benefits from the incorporation of an electron-withdrawing group, leading to reduced photooxidation activity and significantly improved photostability. NP IR1116 exhibits strong NIR-II absorption and fluorescence, peaking at 1004 and 1116 nm, respectively, as well as a photothermal conversion efficiency of 79% under 1064 nm lasers. In vitro and in vivo studies showed the efficacy of NP IR1116 in tumor imaging via NIR-II fluorescence and its ability to effectively induce tumor cell apoptosis under 1064 nm laser irradiation. These findings underscore the potential of NP IR1116 in NIR-II fluorescence imaging-guided PTT for tumor treatment, paving the way for further advancements in NIR-II dye development and bioimaging technologies.
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DOI
PubMed
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2017
·
IF 0.828
Qiao Zhang,Zhihua Zhou,Cheng Peng,Tianlong Huang,Wenjuan Liu,Qingquan Liu,Hu Zhou,Wei Wang,Hua Yan
Three-dimensional biodegradable porous scaffolds play an important role in tissue engineering. A new polymer based on maleated poly(lactic-co-glycolic acid) (MPLGA) was synthesized using direct melt copolymerization from maleic anhydride (MAH), D, L-lactide, and glycolide monomers. MPLGA porous biodegradable scaffolds were prepared by a solution-casting/salt-leaching method. The effects of content and size of the NaHCO3 porogen on the compressive strength of the MPLGA scaffolds were investigated, and the effect of content of the porogen on the porosity of the MPLGA scaffolds was also studied. The results indicated that MAH was grafted onto PLGA successfully and MPLGA scaffolds with interconnective and open pore structure were obtained. Increasing content of NaHCO3 porogen resulted in an increase of porosity and decrease of the compressive strength of the MPLGA scaffolds with the compressive strength of the scaffolds also decreasing with increasing porogen size.
研究领域:
生物材料
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组织工程
·
高分子科学
·
生物医学工程
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DOI
高影响因子
OPTICAL MATERIALS
·
2017
·
IF 2.238
Guihua Cui,Dehai Zhao,Peng Lv,Zhengguo Gao,Shuiying Chen,Nannan Qiu,Toshifumi Satoh,Toyoji Kakuchi,Qian Duan
A series of novel fluorescent complexes was formed by chelation of the thermosensitive polymers with europium(III) ions. The polymers was synthesized via atom transfer radical polymerization (ATRP), which composed of poly( N -isopropyl acrylamide) (PNIPAM) and 2-amino-2-deoxy- d -glucopyranose( d -glucosamine, GA). The aqueous solutions of the polymers and its Eu(III) complexes exhibited a lower critical solution temperatures (LCSTs), and which were approximately equal to body temperature. The maximum emission intensity of the complexes at 613 nm was enhanced by a factor of approximately 10 relative to that of the corresponding Eu(III) chloride. Cell viability assays suggested that these thermosensitive polymers and Eu(III) complexes showed excellent biocompatibility in vitro.
研究领域:
材料化学
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高分子科学
·
无机化学
·
发光材料
·
生物医学工程
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DOI
高影响因子
Fermentation-Basel
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2026
·Vol. 12
·期 1
·
IF 3.3
Fenghao An,Yanchun Feng,Da Li,Mei Hua,Xiuquan Wang,Xifei Xu,Yuguang He,Xinyu Miao,Mubai Sun,Honghong Niu
As one of the few carotenoid-producing microorganisms,Rhodotorula mucilaginosaremains underexplored for its antioxidant activity. This study investigated the effects ofR. mucilaginosaJAASSRY on D-galactose-induced aging mice. The high-dose JAASSRY (HR) significantly increased body weight by 9.89% compared to the model group (AM), while reducing organ indices of the spleen, liver, kidneys, and brain (p< 0.01). Compared with the AM group, the HR group exhibited increased serum activities of SOD (20.26%), GSH-Px (9.03%), and CAT (133.01%), with a 24.87% decrease in MDA level. In brain tissue, SOD, GSH-Px, and CAT activities increased by 79.49%, 8.45%, and 60.23%, respectively, while MDA decreased by 8.29%.R. mucilaginosaJAASSRY also dose-dependently alleviated structural damage in the hippocampus and spleen and improved motor strength and learning-memory capacity. Furthermore,R. mucilaginosaJAASSRY increased the abundance ofLactobacillusand reducedProteobacteria,Helicobacter, andOscillospira, while enhancing antioxidant capacity by modulating nucleotide, lipid, and carbohydrate metabolism.LactobacillusandPediococcuswere positively correlated with memory latency and CAT/SOD activities (p< 0.05), whereasActinormycesandDehalobacteriumshowed negative correlations. Notably, HR performed comparably or superiorly to β-carotene in improving cerebral oxidative stress and beneficial microbiota, suggesting its potential in neuroprotection and gut–brain axis regulation. In conclusion,R. mucilaginosaJAASSRY mitigates aging-related oxidative damage and behavioral deficits by modulating gut microbiota structure and function, demonstrating its promise as a β-carotene alternative in animal husbandry and functional foods.
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高影响因子
Physiological Reports
·
2026
·Vol. 14
·期 11
·e70975
·
IF 2.1
Yunxian Wang,Fenglan Chu,Yanhua Gong,Ruihong Guo,Hui Dong
Despite the ubiquitous use of monosodium glutamate (MSG) as a food additive, its specific effects on intestinal health and disease remain largely unclear. Here we found mucosal application of MSG induced an upward intestinal short-circuit current ( I sc ) in the murine ileum, which was significantly reduced by extracellular Cl − , Na + , and Ca 2+ removal. Mechanistically, MSG-induced I sc was significantly attenuated by pharmacological inhibition of key transporters (NCX, SGLT1, NKA) and secretory channels (CaCC, CFTR, IK Ca ). Furthermore, disrupting intracellular Ca 2+ homeostasis via endoplasmic reticulum (ER) chelation or blockade of IP 3 R, RyR, SOCE/CRAC, and VGCC significantly suppressed both the ileal I sc and MSG-stimulated Ca 2+ signaling in IECs. Importantly, MSG triggered a simultaneous elevation in intracellular Ca 2+ and a reduction in Na + , which were abolished by the blockers of NCX and SGLT1. In vivo, MSG-induced Ca 2+ -dependent ion transports were significantly reduced in irritable bowel syndrome with diarrhea (IBS-D) mice. Our findings indicate that MSG drives Ca 2+ -dependent intestinal ion transports through a complex network orchestrated by SGLT1 and NCX under healthy state, which is markedly attenuated in IBS-D. This study provides novel insights into the gastrointestinal impact of dietary MSG in both health and bowel disease.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Tingquan Zhang,Yang Han,Fengqin Zhang,Chang Yang,Yuan Hu,Qingmei Wang
Designed ordered Pt 1 Co 1 nanocrystals anchored on N-doped carbon with optimized Pt/Co ratio for bifunctional ORR and MOR. • Achieved superior ORR performance: mass activity of 0.734 mA/μg Pt and specific activity of 1.725 mA/cm 2 , outperforming Pt/C by 4.2 and 6.2 times, respectively. • Revealed the synergy of ordered structure and metal-support interaction (SMSI) for electronic modulation (downshifted Pt d-band) and geometric stabilization. • Provided a universal design principle for high-performance Pt-based bifunctional electrocatalysts via structural ordering and support engineering. The practical deployment of fuel cells (FCs) faces significant obstacles stemming from the surface poisoning of electrocatalysts by carbonaceous intermediates (primarily CO) and the intrinsically sluggish reaction kinetics of the oxygen reduction reaction (ORR) at the cathode. Herein, we report the synthesis of ordered PtCo nanocrystals anchored on a nitrogen-doped carbon (NC) support with precisely controlled atomic ratios. The incorporation of Co atoms into the Pt lattice induces a downshift of the Pt d -band center, substantially weakening the adsorption strength of CO and other oxygen intermediates on the catalyst surface. In the CO stripping experiment, the CO oxidation peak potential of Pt 1 Co 1 NCs was observed at 0.587 V, which is 137 mV lower than that of 20% commercial Pt/C (0.724 V). This significant negative shift directly confirms the enhanced CO tolerance of the Pt₁Co₁ NCs catalyst. Furthermore, the Pt 1 Co 1 NCs catalyst demonstrated significantly enhanced bifunctional activity. Specifically, it delivered mass activities (MA) of 0.734 mA/μg Pt for the ORR and 0.932 mA/μg Pt for the MOR, outperforming commercial Pt/C by factors of 4.2 and 3.7, respectively. Download: Download high-res image (324KB) Download: Download full-size image
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Nanomaterials
·
2026
·Vol. 16
·期 13
·829
·
IF 4.8
Huibo Han,Shuai Wang,Rui Min,Ragini Singh,Bingyuan Zhang,Santosh Kumar
2,4-Dichlorophenoxyacetic acid (2,4-D) is an extensively applied organic compound, primarily for agricultural weed control and plant growth agents. Although 2,4-D usually exists in the environment in low volumes, the detection of 2,4-D is critical for human health and environmental safety. In this work, a biophotonic biosensor was fabricated by coating the surface of a tapered optical fiber with gold nanoparticles (AuNPs) to excite the localized surface plasmon resonance (LSPR) and functionalizing the fiber with molybdenum disulfide nanosheets (MoS2-NSs)/zinc oxide nanowires (ZnO-NWs) to extend the effective sensing area. Due to the inhibitory effect of 2,4-D on the hydrolytic activity of ALP, the refractive index (RI) around the sensor surface changes, leading to a shift in the LSPR peak wavelength. According to this sensing technique, the sensor can detect concentrations in the range of 1–10 mg/L, with a limit of detection (LOD) of 0.29 mg/L. The stability, repeatability and selectivity tests show that the sensor has good stability and selectivity. In the actual sample detection experiment, the recovery rates of apples and Chinese cabbage were 96.2–100.4% and 83.8–108.8%, respectively, which indicated that the detection method had good accuracy for the detection of target substances in actual samples. Thus, the proposed sensor has an important application in the detection of 2,4-D herbicides.
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Zhicong Hu,Guannan Li,Wenfu Xie,Jing Liu,Qiang Wang,Jiandu Lei
Coupling glycerol oxidation with hydrogen production offers a promising approach to reducing the energy consumption of hydrogen production and upgrading biomass. However, the catalytic performance is often limited by insufficient interfacial charge transfer and poorly defined active sites. Herein, we report a sulfur-modulated NiFe layered double hydroxide catalyst integrated with a Metal-organic frameworks (MOF)-derived Cu framework on nickel foam, in which well-defined heterogeneous interfaces are deliberately constructed to regulate the local electronic structure and catalytic microenvironment. Sulfur incorporation reconstructs the metal coordination environment and induces electron redistribution. As a result, the catalyst exhibits outstanding glycerol oxidation performance toward formate with high selectivity over a broad potential window, along with remarkable durability at high current densities. In situ Fourier transform infrared (FTIR) spectroscopy identifies the key intermediates involved in glycerol oxidation, while density functional theory (DFT) calculations reveal that sulfur-induced electronic coupling lowers the reaction energy barrier and facilitates charge transfer.
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高影响因子
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