JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Wei Shen,Liang Qiao,Juan Ding,Yongming Sui
Tailoring tantalum disulfide (TaS 2 ) electrocatalysts with tunable stacking architecture and phase structure is of great importance for advancement of hydrogen evolution reaction (HER). In this work, stacking architecture- and phase- modulated tantalum disulfide nanosheets are reported through a facile liquid phase synthesis strategy. Accordion-like nanosheets , vertical nanosheets and ultrathin nanosheets are named according to their obvious stacking architecture, and 1 T-2 H mixed phase structures containing different degrees of 2 H phases are realized. High-resolution transmission electron microscopy shows that there are obvious lattice defects in the nanosheets. Tantalum disulfide nanosheets synergistically integrate multiple advantages of nanostructure engineering, phase engineering and defect engineering. In the HER process, the ultrathin tantalum disulfide nanosheet structure is conducive to the in-plane electron transfer , and its close contact with the electrode surface makes the charge transfer faster and has the best HER activity. The overpotential of the ultrathin nanosheet electrocatalyst at 10 mA cm −2 is 280 mV. After 10,000 CV cycles and over 40 h of i-t test, the catalyst still has high stability in acidic media. Theoretical calculations show that the addition of 2 H phase structure and rich defects improves the intrinsic activity and active sites, and jointly promotes the improvement of HER performance. Our work integrates a variety of optimal regulation methods into TaS 2 nanosheets, providing a new idea for the construction of advanced electrocatalysts for water electrolysis.
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高影响因子
MATERIALS RESEARCH BULLETIN
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2022
·
IF 5.6
Min Yang,Yujia Yan,Enzhou Liu,Qian Sun,Jun Fan
In recent years, all-inorganic perovskite has been extensively studied due to its excellent photoelectric properties, but the application of Cs n PbBr 2+ n perovskite with excellent stability in the field of chemical sensing has yet to be developed. Herein, Cs 4 PbBr 6 /CsPbBr 3 with good stability was successfully prepared by controlling the synthesis temperature to 100 ° C. The fluorescence intensity of Cs 4 PbBr 6 /CsPbBr 3 exhibited 2,4-dinitriphenylhydrazine (DNPH) concentration-dependent characteristics and could be used for sensing DNPH based on the dynamic quenching process triggered by the collision between Cs 4 PbBr 6 /CsPbBr 3 and DNPH. A good linear model was established based on the detection signal and DNPH concentration in the range of 0.05∼30 mg/L and the detection limit was 0.033 mg/L. This method was applied to detect DNPH in soil and tap water samples with satisfactory results obtained. Therefore, this research broadens the application of Cs n PbBr 2+ n in the field of quantitative detection and is expected to be developed into a fluorescent sensor for the detection of hydrazine substances.
研究领域:
分析化学
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材料科学
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环境监测
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传感器技术
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光电子学
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 22
·13319-13326
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IF 3.269
Xiuling Xu,Fan Hu,Qi Shuai
Two novel Ba(II) complexes [Ba(TCPA)2(H2O)4] 1 and [Ba(H2O)8]·2(o-FcCOC6H4COO)·6H2O 2 [HTCPA = 2,4,6-trichlorophenoxyacetic acid and o-HOOCC6H4-COFc = o-ferrocenylcarbonyl benzoic acid] have been synthesized by a facile microwave method. The solid-state structures were well established by means of X-ray crystallography as well as routine analysis of the infrared spectrum (FTIR), elemental analysis, field emission scanning electron microscopy (FESEM) and thermogravimetric analysis (TG). Different polyhedra of tricapped triangular prisms for 1 and dodecahedra for 2 were present. It is worth noting that the central Ba(II) ion in 1 is nine-coordinated by two carboxylate oxygen atoms from TCPA ligands and seven oxygen atoms from coordinated water molecules. By contrast, the eight-coordinated Ba(II) in 2 forms barium-water clusters assembled by O–H⋯O hydrogen-bonds contributed by coordinated water molecules. The uncoordinated o-OOCC6H4-COFc ligands in 2 play a key role in the process of charge balance. FESEM images exhibited different surface appearances between the ligand and barium complexes, that is: flower-like HTCPA, branch-like o-HOOCC6H4-COFc, block-like complex 1 and corner-truncated cubes for complex 2. The allelopathic activity of the complexes and their corresponding ligands was evaluated against two herbaceous plants of barnyard grass and turnip (Raphanus sativus). All the tested compounds showed certain activity with good RI values. An antifungal bioassay was also carried out in vitro on three strains of Botrytis cinerea Pers., Glomerella cingulata Schr and Cytospora sp. Complex 1 and HTCPA can work against all three tested fungi, whereas o-HOOCC6H4-COFc and 2 only worked for Botrytis cinerea Pers. The complex presented in this paper has potential applications in weed control, and this work provides an experimental basis for future studies on Ba-based pesticides.
研究领域:
无机化学
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金属配合物化学
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农业化学
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晶体工程
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植物生理学
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农药学
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生物活性评估
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2021
·
IF 3.927
Nengyuan Zeng,Chenwei Wang,Chong Luo,Hongdong Zhao,Yuling Liu,Wantang Wang,Tengda Ma
This article proposed an improvement plan for the slurry to reduce the dishing caused during copper chemical mechanical polishing (CMP) of the interconnect structure. According to the difference in the pressure between the concave and convex parts of the copper film in the high-hardness polishing pad, polishing slurries were designed with a distinct difference in the polishing removal rate under high and low platen pressures to improve their planarization efficiency. 2 wt% GLY (glycine) and 1 wt% H 2 O 2 can provide a chemical dissolution effect, adding 0.1% TAZ (1,2,4-triazole) to slow down the corrosion mainly for the recession, by adjusting the slurry pH to 7. The polishing results showed that the slurry had a high copper removal rate (6772 Å/min) at high pressure (3.0 psi) and a much lower removal rate (3273 Å/min) at low pressure (1.2 psi). The pattern wafer polished with this slurry obtained relatively low dishing. The other comparison groups showed slight differences in copper removal rate at high and low pressure and a deeper dishing of the polished pattern wafer. In this paper, based on the analysis of static dissolution experiments, electrochemical experiments, and XPS experiments of copper films in different slurries, the chemical reaction mechanism of copper films in the solution system of GLY and H 2 O 2 was studied at different pH values. In addition, the inhibition mechanism of TAZ on the copper surface at different slurry pH values was proposed, including the properties of the TAZ molecule adsorption film on the copper surface, the uniformity of the surface coverage, and the thickness of the passivation layer . The results can reflect the polishing results to a certain extent despite some deviations, but it can also be used as a more reasonable argument to explain the optimization scheme of the slurry proposed in this article.
研究领域:
材料科学
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微电子制造
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表面化学
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半导体工艺
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腐蚀与防护
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高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2024
·Vol. 25
·期 19
·10563
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IF 4.9
Fei Ran,Kailang Mu,Gang Liu,Yuchen Liu,Yuxin Pang,Guo Feng,Lingli Zhou,Leqiang Peng
Plant-derived medicinal materials have significant potential and promising applications in wound healing and skin regeneration. This study aims to develop a plant-based extract hydrogel from Bletilla striata (Thunb.Reichb.f.), specifically a glucosyloxybenzyl 2-isobutylmalates extract (B), and characterize its potential effects on wound healing. We synthesized the hydrogel using carbomer (C), glycerol (G), and triethanolamine (T) as the matrix, incorporating B into the hydrogel base, and evaluated its physical and chemical properties. In vitro tests assessed the biocompatibility of the glucosyloxybenzyl 2-isobutylmalates-carbomer-glycerol-triethanolamine (B-CGT) hydrogel and its effects on cell proliferation, migration, and adhesion. Animal model experiments evaluated its potential to promote wound healing. The results showed that the prepared B-CGT hydrogel possessed a good three-dimensional network structure and stability, demonstrating significant free radical scavenging capacity in antioxidant tests. In cell experiments, the B-CGT hydrogel exhibited no potential cytotoxicity and showed good hemocompatibility and promotion of cell proliferation. Animal experiments indicated that wounds treated with the B-CGT hydrogel healed significantly faster, with improved formation of new epithelial tissue and collagen. This study suggests that the developed B-CGT hydrogel is a promising candidate for wound dressings, with excellent physicochemical properties and controlled drug release capabilities, effectively promoting the wound healing process.
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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yong Zheng,Haobin Wu,Shouchao Zhong,Xun Kan,Ye Song,Fujian Liu,Wei Lin,Jianchun Wang,Lilong Jiang
The development of efficient and reusable sorbents for SO 2 removal from flue gas has attracted considerable attention. Herein, we report a “chainmail” structured Ca-based SO 2 sorbent by encapsulating Ca species within ordered mesoporous carbon (OMC), denoted as Ca(OH) 2 @OMC- x , where x denotes the Ca(OH) 2 mass fraction (wt%). The OMC was prepared via a one-step solvent-free mechanochemical assembly: the precursors and a block copolymer template (Pluronic F127) were ground to form a preorganized composite, followed by solidothermal treatment and calcination to remove the template and carbonize the polymer. The obtained OMC was then impregnated with a Ca precursor and calcined to strengthen interfacial interactions, encapsulating the Ca species within the OMC framework. Finally, steam treatment converted the confined Ca species into finely dispersed Ca(OH) 2 active domains. The resulting Ca(OH) 2 @OMC- x exhibits a large BET surface area (169.4–290.3 m 2 /g), long-range ordered mesoporosity with a narrow pore size distribution (∼5.5 nm), and well-dispersed Ca active phases with enhanced stability. Consequently, Ca(OH) 2 @OMC- x serves as an efficient and reusable solid sorbent for SO 2 capture, exhibiting a high SO 2 adsorption capacity of 11.24 mmol/g and maintaining 98.6% of its initial capacity after five adsorption–desorption cycles. This study provides an effective “chainmail encapsulation” materials design strategy for scalable SO 2 abatement under complex flue gas conditions.
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高影响因子
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
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2026
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IF 4.4
Fuyu Song,Jiaxi Liu,Qi Wu,Aiqin Diao,Yinhu Jiang,Xin Yan,Na Li,Jian He,Jiguo Qiu
An efficient Rhodococcus sp. YQ-4 strain degraded 98% of 2-ABT within 24 h. • A new intermediate metabolite (2-hydroxybenzothiazole) was identified. • A novel 2-ABT biotransformation pathway was proposed. • Biodegradation of 2-ABT was a detoxification process. 2-Aminobenzothiazole (2-ABT), a representative heterocyclic compound originating from tire wear particles, was widely detected in diverse environmental matrices. Due to its persistence and potential toxicity, the removal of 2-ABT from contaminated environments has become an increasing environmental concern. However, studies on the efficient biodegradation of 2-ABT by pure cultures remain limited. In this study, the abundance of Rhodococcus increased significantly following enrichment and acclimation. Subsequently, a 2-ABT-degrading pure culture, designated Rhodococcus sp. YQ-4, was isolated. Under the optimal conditions of pH 7.0, 1% NaCl, and 30 °C, strain YQ-4 achieved a removal rate of 98% for 50 μM 2-ABT within 24 h. A key metabolic intermediate, 2-hydroxybenzothiazole (2-OBT), was identified by liquid chromatography-time-of-flight mass spectrometry (LC-TOF-MS). Based on these results, a possible initial biotransformation pathway involving deamination and hydroxylation at the C2 position of the thiazole ring was proposed. Furthermore, toxicity bioassays involving the green alga Chlamydomonas ellipsoidea and mung bean ( Vigna radiata ) demonstrated that the biodegradation of 2-ABT by strain YQ-4 significantly alleviated its phytotoxicity, thereby restoring the growth and physiological vigor of the test species. Collectively, this study provided a novel bacterial resource for the bioremediation of 2-ABT-contaminated environments and offered new insights into the catabolic pathway associated with emerging pollutants.
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高影响因子
INTERNATIONAL JOURNAL OF THERMOPHYSICS
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2026
·Vol. 47
·期 7
·112
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IF 3.6
Shi Jiahao,Wang Jianan,Feng Junyu,Zhang Ke,Bi Shengshan
This study presents an investigation into the liquid density of isobutanol and 2-butanol at selected temperatures from 303.15 K to 383.15 K and pressures up to 200 MPa using a variable-volume high-pressure system. The apparatus was validated with n -decane, and the measured densities agreed with literature values within 0.2 %. The expanded relative uncertainty of density was estimated to be 0.27 % with a coverage factor of k = 2. The experimental data were correlated with the Tammann–Tait equation, yielding average absolute deviations below 0.05 % for both butanol isomers. The isothermal compressibility and isobaric thermal expansivity were derived from the fitted correlations to characterize the pressure and temperature dependence of the volumetric properties. In addition, the pure-component parameters for the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state were optimized using the 2B association scheme. The optimized PC-SAFT model reproduced the measured densities with average absolute deviations lower than 0.2 %. The results expand the available high-pressure density database for these two butanol isomers and may be useful for thermodynamic modeling and engineering calculations within the investigated temperature and pressure ranges.
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高影响因子
Pharmaceutics
·
2026
·Vol. 18
·期 8
·1010
·
IF 6.9
Zeyu Wen,Xilu Sun,Sumeng Chen,Jinyan Meng,Runlin Yu,Shuyan Guo,Xingyuan Cao
Background: The Biopharmaceutics Classification System (BCS) classifies drug substances according to their aqueous solubility and intestinal permeability; however, its application to veterinary drugs should account for species-specific gastrointestinal physiology. Grapiprant is a selective prostaglandin E2receptor subtype 4 (EP4) antagonist approved as an oral tablet to control pain and inflammation associated with osteoarthritis in dogs, but its properties within the BCS framework remain unclear.Methods: This study evaluated the equilibrium solubility of grapiprant across pH conditions relevant to the canine gastrointestinal tract and calculated the dose number (D0) based on different gastric fluid volumes. A Caco-2 cell monolayer model was used to assess grapiprant intestinal permeability and the effects of time, concentration, pH, and efflux transporter inhibitors on its transepithelial transport.Results: Grapiprant showed relatively small changes in solubility across the tested pH range. D0varied with pH and gastric fluid volume and approached or fell below 1 at larger fluid volumes. In the Caco-2 model, grapiprant showed generally limited apparent absorptive permeability, with permeability varying with pH. Efflux ratios were greater than 1, and verapamil reduced the efflux ratio, suggesting possible P-glycoprotein (P-gp) involvement.Conclusions: These findings suggest that both solubility and apparent intestinal permeability may limit the oral absorption of grapiprant under certain canine-relevant conditions. Accordingly, this study provides a biopharmaceutical characterization of grapiprant within the BCS framework rather than a definitive canine BCS classification, highlighting the importance of considering canine gastrointestinal conditions when interpreting its solubility and permeability. The results may support future optimization of dosing conditions and oral formulations.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Yaozhi Zhang,Menglu Jiang,Shiqi Zhang,Aimeng Dong,Fenghua Zhang,Yanju Liu,Huiping Yuan,Jinsong Leng
Traditional hydrogel-based drug delivery systems face critical limitations, including poor toughness and adhesion, and low drug utilization efficiency, which collectively limit their efficacy in glaucoma treatment. Deep eutectic solvents (DESs) can effectively address these limitations because they are structurally tunable and exhibit high rates of drug dissolution. Herein, we apply β-cyclodextrin and phytic acid to prepare a novel DES, which was used to fabricate a deep eutectic smart gel drug delivery system (DSGS). The DES establish multi-hydrogen-bonded shielding networks with polymer chains, endowing the DSGS with an ocular tissue-matched modulus and a high toughness of 5.94 MJ·m − 3 . Notably, the DSGS enables precise drug release in response to dual stimuli: matrix metalloproteinase-2 and temperature. We employ 4D printing technology to engineer a novel glaucoma drainage device (GDD) from the DSGS loaded with an antifibrotic drug for glaucoma treatment. Based on the synergistic effect of DSGS and the drug, the GDD regulates intraocular pressure (IOP), suppresses fibrosis, and restructures the extracellular matrix collagen architecture in vivo. Furthermore, the DSGS is injectable and exhibits strong tissue adhesion. Following minimally invasive implantation into the conjunctiva, a stable IOP was maintained for 30 days. This innovative design represents a promising direction for future drug delivery.
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高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2026
·
IF 7.1
Taozhong Zhang,Wanzhong Yin,Jin Yao,Wenju Sun,Weifan Du,Chao Yin,Xiaoqi Ban
The inherent floatability of chalcopyrite and molybdenite, together with the environmental concerns associated with conventional depressants, poses a persistent challenge to their efficient and sustainable separation. Therefore, this study evaluates the potential of 4-amino-6-hydroxy-2-mercaptopyrimidine (AHMM) as an efficient depressant and systematically investigates its role in improving flotation selectivity and regulating interfacial interactions. Micro-flotation experiments showed that at neutral pH and an AHMM concentration of 12 mg/L, the recovery of molybdenite reached 92.91%, whereas that of chalcopyrite was only 7.76%. This large difference corresponds to a selectivity index of 12.48, enabling highly efficient separation of the two minerals. Surface analyses—including zeta potential measurements and surface wettability tests—indicated that AHMM preferentially adsorbed onto chalcopyrite, significantly reducing its hydrophobicity. FTIR and XPS results demonstrated that the S and N atoms of AHMM coordinated with Cu atoms on the chalcopyrite surface, leading to the formation of stable surface complexes. DFT calculations further supported the robust chemisorption of AHMM on the chalcopyrite surface, producing a four-membered chelate via Cu–S and Cu–N coordination. Overall, this study demonstrates that AHMM has significant potential to serve as an efficient and selective depressant for chalcopyrite in Cu–Mo flotation separation processes.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19
Shanhu Wang,Jiachang Bi,Shuya Liu,Jiyang Xie,Yihan Lei,Zihao Lin,Yang He,Hao Fan,Jiayi Qin,Wenyan Zha,Sheng'an Yang,Ji Ma,Hui Zhang,Qingming Chen,Jiangnan Li,Yanwei Cao,Changjian Li,Wanbiao Hu,Liang Wu
Self-assembled nanocomposites typically form through the phase separation of immiscible components, yet controllable synthesis with tailored functionalities remains challenging. Here, we demonstrate a substrate-directed self-assembled 2-(1-3)-structured nanocomposite via topotactic phase separation, preserving the crystallographic orientation from the substrate. It comprises a horizontal antiferromagnetic (AFM) rocksalt layer (2) at the substrate and vertical rocksalt nanopillars (1) embedded in a ferrimagnetic (FiM) spinel matrix (3). The nanopillars arise from kinetic trapping of late-arriving rocksalt species unable to diffuse through the growing spinel layer, forming “frozen diffusion channels” under continuous pulsed laser deposition. Importantly, the comparable magnitudes of AFM anisotropy and AFM-FiM interfacial exchange coupling enable two phenomena: switching between coercivity enhancement and exchange bias regimes, and field-free manipulation of AFM order. This approach offers precise control of magnetic interactions in self-assembled nanocomposites for advanced spintronic applications.
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高影响因子
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