Open Ceramics
·
2025
·
IF 2.8
Sehreish Abrar,Faisal Nazeer
The matched CTE with SiC-based ceramics composites, low thermal conductivity and better corrosion resistance against calcium-magnesium-aluminosilicate (CMAS) are the basic requirements for suitable thermal/environmental barrier coating materials for silicon-based ceramics. Rare earth silicates have better corrosion resistance against CMAS and water vapor but their high thermal conductivity and higher value of CTE limit their applications. Inspired by the high entropy effect, a new quaternary (Er 1/4 Sc 1/4 Tm 1/4 Yb 1/4 ) 2 SiO 5 or (4RE 1/4 ) 2 SiO 5 monosilicate was fabricated to improve the overall performance. The TEM analysis shows the uniform mixing of powders after synthesis. The as-synthesized (4RE 1/4 ) 2 SiO 5 monosilicate shows a matched CTE value of 3 to 5.5 × 10 -6 /K with SiC-based composites due to severe lattice distortion and chemical bonding variation. The point defects, including mass mismatch and oxygen vacancies, lead to a lower thermal conductivity value (1.2 W/m·K) of (4RE 1/4 ) 2 SiO 5 monosilicate. Furthermore, the quaternary (4RE 1/4 ) 2 SiO 5 monosilicate also shows better resistance against CMAS at high temperatures and for longer periods. Overall, the above (4RE 1/4 ) 2 SiO 5 monosilicate is a suitable candidate to use as T/EBC material.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xunda Hu,Shiyan Sun,Yunxuan Weng,Caili Zhang
The advancement of high-performance poly(3-hydroxybutyrate- co -4-hydroxybutyrate) (P34HB) bioplastics is limited by their inherent brittleness and narrow processing window. In this study, a novel class of reactive citrate-based plasticizers was developed by combining short-chain butyl esters with long-chain polyethylene glycol diglycidyl ether (PEGDE). Three derivatives—TE1B2, TE2B1, and TE3—were synthesized, with TE3 containing three epoxy groups for covalent network formation. Comprehensive characterization showed that TE3 significantly outperforms commercial tributyl citrate (TBC) in thermal stability ( T d- 10% = 275.3 °C vs. 179.2 °C), migration resistance (<1 % mass loss in petroleum ether), and mechanical performance (elongation at break, ε b = 51.2 %; tensile strength, σ = 15.8 MPa). The PEGDE segments of TE3 enable (1) covalent crosslinking with P34HB terminals via epoxy–carboxyl and epoxy–hydroxyl reactions and (2) topological entanglement maintaining the storage modulus of neat P34HB. This molecular architecture suppressed spherulite formation and established a stress-dissipating network, as evidenced by SEM. Rheological analysis further revealed TE3's shear-thinning behavior with high-frequency elasticity retention, enabling reliable fused deposition modeling (FDM). By overcoming the traditional strength–ductility trade-off, this work introduces a synergistic strategy combining chemical crosslinking and physical entanglement, offering new insights into covalently anchored plasticization and network dynamics in biopolymer design.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2020
·
IF 3.905
Qiang Lu,Guan Zhang,Zhen-xi Zhang,Hu Bin,Kai Li
A novel way was put forward with 9,10-dihydroanthracene (DHA) as a solid hydrogen donor to improve the selective production of 4-ethyl phenol (4-EP) from catalytic fast pyrolysis (CFP) of bagasse over activated carbon (AC) catalyst. Both pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and lab-scale CFP experiments were carried out on the 4-EP formation affected by various factors, in order to determine the optimal conditions for 4-EP production. The results indicated that DHA exhibited promising hydrogenation capabilities to improve 4-EP formation. In Py-GC/MS test, the 4-EP reached a maximal yield of 3.21 wt% with its corresponding selectivity of 22.96 % at 350 °C under AC-to-bagasse (AC-to-BA) and DHA-to-bagasse (DHA-to-BA) ratios of 6:1 and 1:5, respectively. Whereas, the maximal 4-EP yield was only 2.18 wt% in the absence of DHA, indicating a yield increase of 47.2 % by DHA. Moreover, lab-scale experiments attained the highest 4-EP yield and the corresponding selectivity of 3.05 wt% and 16.31 % with DHA, compared with the yield of 1.67 wt% without DHA. In addition, the possible hydrogenation mechanism of DHA in facilitating 4-EP formation was revealed.
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2023
·
IF 3.7
Xiu-Ni Hua,Zhuoer Cai,Xian Shi,Yuna Duan,Xiang Zhang,Jian Chen,Hai-Bao Duan
Significant attention has been dovoted to the organic–inorganic hybrid perovskites in the realm of scientific research arising from their distinctive optical and dielectric properties along with structural tunability, rendering them highly versatile and adaptable materials. Herein, two novel one-dimensional organic–inorganic hybrid perovskites of (4-MPD)MnX3 (4-MPD = 4-methylpiperidinium, X = Cl (1), X = Br (2)) were synthesized and demonstrated to, respectively, undergo reversible phase transitions at 376 and 368 K, characterized by differential scanning calorimetry and dielectric measurements. It is instresting to note that the replacement of Br by the Cl halogen atom has maintained the crsytal structures but devoted a slight increase in phase transition temperature. Variable-temperature structural analyses signify that the order–disorder change of 4-MPD cations acts as the driving force for such phase transitions from the Pnma to P1̅ space group. In addition, compounds 1 and 2 both emit strong red photoluminescence under UV excitation. The two compounds with high-temperature dielectric switching and photoluminescent properties will offer fresh insights for the design and investigation of novel multifunctional organic–inorganic hybrid perovskites.
研究领域:
材料科学
·
无机化学
·
光电子学
·
介电材料
·
钙钛矿研究
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 21
·2200393
·
IF 6.389
Ting Wang,Bin Yao,Yongfeng Li,Zhanhui Ding,Jiayong Zhang,Chunkai Wang,Jia Liu
An amorphous boron nitride (aBN) layer is inserted between Cu 2 ZnSn(S,Se) 4 (CZTSSe) films and Mo back electrode of CZTSSe solar cell by magnetron sputtering to mitigate the carrier recombination at back interface by tuning energy band alignment and suppressing formation of secondary phases and Mo(S,Se) 2 . The effect of the aBN layer on power conversion efficiency (PCE) of CZTSSe solar cell is investigated by numerical simulation and experiment. It is found that PCE is greatly improved via the insertion of suitable thick aBN layer, which is attributed to increased open-circuit voltage ( V OC ) and fill factor (FF). By quantitative analysis, it is deduced that the increased V OC originates mainly from decrease in reverse saturation current density ( J 0 ), followed by increase in shunt resistance ( R Sh ), and the increased FF is mainly due to the decreased J 0 , followed by increased R Sh and decreased photogenerated current density ( J L ). By optimizing aBN thickness through tuning sputtering time, the PCE increases from 8.68% of CZTSSe solar cell without the aBN layer to 9.51% of the CZTSSe solar cell with aBN layer. The influence mechanism of the aBN layer on the PCE is suggested by analyzing quantitatively the effect of the aBN layer on J L and electrical parameters.
研究领域:
光伏技术
·
材料科学
·
半导体器件
·
薄膜太阳能电池
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·
IF 11.3
Guiping Liu,Xin Yu,Xuya Wu,Dexuan Tang,Shengqiang Ying,Shui Wang,Jiandong Jiang,Wenjing Qiao
4-Hydroxy-chlorothalonil (4-OH-TPN), the main metabolite of the widely used fungicide chlorothalonil, has recently been reported to be reductively dechlorinated by an anaerobic consortium containing Dehalogenimonas. While the pure culture of the Dehalogenimonas has not been isolated and the reductive dehalogenase genes (rdhAs) responsible for the 4-OH-TPN dechlorination remain unclear. The assembled genome of Dehalogenimonas contained a 1,2-dichloroethane (1,2-DCA) reductive dehalogenase gene (dcpA) ortholog. In this study, by alternating the substrate from 4-OH-TPN to 1,2-DCA, a pure culture of Dehalogenimonas, designated as 4OHTPN1, was finally isolated. Strain 4OHTPN1 potentially represents a novel species in the genus Dehalogenimonas and contains 33 rdhA genes and 4 rdhB genes. The novel rdhA26 gene (designated htpnA) was identified as the key gene involved in 4-OH-TPN dechlorination. Its transcriptional and protein expression levels were 25.0-fold and 10.2-fold higher than the average of all rdhA genes when the culture was solely amended with 4-OH-TPN. In contrast, the dcpA ortholog, rdhA25, exhibited 10.1-fold and 9.8-fold higher transcriptional and protein expression levels when only amended with 1,2-DCA, highlighting a substrate-specific regulatory response to a distinct electron acceptor. This study expands our knowledge of the rdhA gene for 4-OH-TPN dechlorination in the pure culture of Dehalogenimonas.
✓ 已验证
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.5
Chengcheng Liu,Lin Shao,Guo-Heng Wei,Yi-Fan Li,Pan Guo,Ligang Zhang,Cong Wang,Xiao-Yan Zhao,Dejin Zhang,Jing-Pei Cao
Lignin, due to its structural rigidity, tends to form coke deposits during catalytic hydrodeoxygenation (HDO), causing catalyst deactivation, and eliminating coke to restore performance is challenging. In this study, Co 3 O 4 shows excellent HDO performance toward lignin model dimers with high selectivity for demethoxylation and deethoxylation under mild conditions via a one-step strategy integrating in-situ reduction and HDO, and enables lignin HDO. At 240 o C, 2 MPa, and 20 h, lignin achieved a 73 % liquid yield, with 64%, 30%, and 6% selectivities to alkanes, alcohols, and phenols. This is attributed to Co 3 O 4 's high Co-O bond energy, dominant (220) crystal plane exposure, and high Co 3+ /Co 2+ ratio, facilitating in-situ reduction to metallic cobalt active sites. Coke on Co 3 O 4 can be removed by calcination to restore performance, with 90% of the initial liquid yield retained after five cycles. This low-cost commercial non-noble metal Co 3 O 4 enhances the economic feasibility of lignin's high-value utilization.IntroductionLignin, accounting for 15-30 wt% of lignocellulose, is the most abundant renewable aromatic resource on earth, holding immense potential to replace fossil feedstocks in producing high-value
✓ 已验证
DOI
高影响因子
Acta Crystallographica Section E-Crystallographic Communications
·
2017
·Vol. 73
·期 6
·871-875
·
IF 0
Fu W.-W.,Li Y.-Q.,Liu Y.,Chen M.-S.,Li W.,Yang Y.-Q.
A new complex, namely bis[4′-(furan-2-yl)-2,2′:6′,2′′-terpyridine]nickel(II) dichloride decahydrate, [Ni(C19H13N3O)2]Cl2·10H2O, has been crystallized by solvent evaporation and characterized by single-crystal X-ray diffraction. The coordination environment of the NiII cation is distorted octahedral with slight deviations from an idealized geometry. The most intriguing structural feature is an infinite two-dimensional hybrid water–chloride network parallel to (011) constructed by O—H⋯O and O—H⋯Cl hydrogen bonds involving two independent chloride ions and ten independent solvent water molecules with an l-shaped pattern. One of the furyl rings is disordered with a refined occupancy ratio of 0.786 (13):0.214 (13)
✓ 已验证
DOI
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
·
2017
·
IF 0.809
Huili Ma,Shuyun Liu,Shaohua Zhu,Wenzhu Bi,Xiaolan Chen,Yufen Zhao
Display full size
✓ 已验证
DOI
高影响因子
JOURNAL OF DAIRY SCIENCE
·
2026
·
IF 4.7
Minghao Liu,Shiying Li,Xue Zhou,Xueyan Duan,Xueqi Fu,Shu Xing,Weiwei Han
Goat milk, distinguished by its high β-casein content and superior digestibility compared with bovine milk, represents a promising source of bioactive peptides. Dipeptidyl peptidase-IV (DPP-4) inhibitors are vital for managing type 2 diabetes mellitus by enhancing incretin-mediated glycemic control. Naturally derived DPP-4 inhibitory peptides are of interest as food-compatible candidates for functional ingredient development. This study aimed to identify and characterize DPP-4 inhibitory peptides from goat milk proteins through an integrated computational and experimental approach. Eleven major goat milk proteins were subjected to in silico hydrolysis using Alcalase, Pepsin, and Trypsin, generating 319 peptides (3–15 amino acids). Virtual screening with ToxinPred, PeptideRanker, StackDPPIV, and KarmaDock prioritized non-toxic, bioactive candidates, followed by molecular docking and 500 ns Gaussian accelerated molecular dynamics simulations using AMBER 22 to elucidate binding and conformational dynamics with DPP-4 (PDB: 4A5S). High-performance liquid chromatography validated the presence of 3 top peptides—MMSF (from α-lactalbumin), MPFPK, and GPFPIL (from β-casein)—in the < 3 kDa hydrolysate fraction, with retention times closely matching standards (MPFPK: 8.923 vs. 8.856 min; MMSF: 11.003 vs. 10.912 min; GPFPIL: 12.406 vs. 12.334 min). In vitro assays confirmed competitive inhibition, with IC 50 values of 0.69 mM (MMSF), 0.32 mM (MPFPK), and 2.83 mM (GPFPIL), and negligible cytotoxicity (>95% cell viability at 10 mM in Caco-2 cells). Docking revealed interactions with critical DPP-4 residues (H740, Y631, Y547), with MPFPK forming the most extensive hydrogen bond network (5 bonds). Molecular dynamics simulations indicated enhanced DPP-4 stability (reduced RMSD), increased radius of gyration and solvent-accessible surface area, and distinct flap region (H235–E255) perturbations: GPFPIL induced a stable open conformation, MPFPK caused dynamic open-closed transitions, and MMSF disrupted β-sheet stability. MM-PBSA analysis confirmed MPFPK's superior binding affinity. These findings establish goat milk as a valuable source of DPP-4 inhibitory peptides, with MPFPK demonstrating exceptional potency and stability. This integrated framework provides a scalable approach for discovering food-derived bioactives, advancing the development of natural therapeutics and functional foods for type 2 diabetes management.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2026
·
IF 4
Yuzhen Hu,Ruiying Xiong,Xin Qu,Taras Nagornyy,Zhenlong Song,Xingye Zeng,Ning Li,Qi Zhang,Longlong Ma
Selective C-C bond cleavage in lignin is a pivotal step toward its efficient utilization, enabling the production of diverse and valuable chemicals from this abundant and renewable resource. Among the catalysts reported for oxidative cleavage of C-C bond in lignin β-O-4 ketones, CeO₂-supported Pd catalysts have demonstrated outstanding activity. However, the exact nature of the active Pd sites responsible for C-C bond cleavage remains poorly understood, limiting mechanistic insights into this transformation. In this study, CeO₂ supports with four distinct morphologies including rods (R), spheres (S), cubes (C), and polyhedrons (P) were synthesized to investigate their influence on the catalytic activity of Pd/CeO₂ catalysts in the oxidative cleavage of β-O-4 ketones. The catalytic performance was found to depend strongly on the morphology of CeO₂, with Pd/CeO₂-P exhibiting the highest activity for C-C bond cleavage. This catalyst possessed the lowest Pd⁴⁺ content and the highest Pd⁰/Pd²⁺ ratio among the series. By systematically tuning this ratio, a volcano-type relationship between Pd⁰/Pd²⁺ ratio and catalytic activity was established, indicating a dual-site mechanism in which Pd⁰ facilitates the formation of reactive oxygen species, while Pd²⁺ serves as the active center for C-C bond cleavage.
✓ 已验证
DOI
高影响因子
Food Chemistry-X
·
2026
·
IF 9.2
Tian-Pei Zhao,Jing-Yu Chen,Yue-Hua Li,Chen-Xia Zhang,Yu-Xiang Ma,Zhao Qin,Xue-De Wang,Hua-Min Liu,Rui-Fu Cui,Lei Wang,Yong-Jun Xu,Hai-Ming Shi
This study systematically investigated the antioxidant activities of seven lignin-derived volatile phenolics in sesame oil. Using in vitro assays and a purified sesame oil (PSO) model, 4-vinylguaiacol exhibited the strongest antioxidant capacity, followed by 4-ethylguaiacol, 4-methylphenol, and guaiacol, all of which outperformed vanillin, acetovanillone, and isoacetovanillone. The former four compounds effectively enhanced PSO stability, as evidenced by prolonged oxidation induction time, increased thermal decomposition temperature, and suppressed rise of various oxidation indices during accelerated storage. Quantum chemical calculations supported that 4-vinylguaiacol had the strongest antioxidant activity, consistent with experimental ranking. Binary interaction analysis revealed antagonism between 4-vinylguaiacol and sesamol, indicating that these two compounds should not be combined in antioxidant formulations, whereas additive effects were observed with γ -tocopherol. This study provides a theoretical basis for the rational design of antioxidant formulations. As natural antioxidants, 4-vinylguaiacol and its combination with γ -tocopherol show promising application prospects in commercial edible oil systems.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）