APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Yizhi Zeng,Xianghong Ren
Unsymmetrical dimethylhydrazine is a high-energy liquid rocket fuel widely utilized in the aerospace field. Its highly toxic nature poses a significant threat to the ecosystem and human health, necessitating the urgent development of efficient and environmentally friendly treatment technologies. In this study, a (001) crystal facet-dominated 001-TiO 2 /CeO 2 S-scheme heterojunction was constructed via a solvent hydrothermal-photoassisted method. Under simulated solar light irradiation, the catalyst demonstrated a degradation efficiency of 98.4 % for high-concentration Unsymmetrical dimethylhydrazine wastewater (100 mg/L) within 140 min, while effectively decomposing highly toxic intermediates with a mineralization rate reaching 84.5 %. This is attributed to the synergistic interaction between the crystal facet effect and the S-scheme heterojunction, which significantly enhances the spatial separation and transfer of photogenerated carriers. The intermediate products were identified using solid-phase microextraction coupled with gas chromatography-mass spectrometry (SPME-GC–MS), revealing the possible degradation pathways of Unsymmetrical dimethylhydrazine and elucidating the reaction mechanism. This study offers a viable approach for the efficient degradation of Unsymmetrical dimethylhydrazine wastewater, offering significant reference value for advancing wastewater treatment in the aerospace industry.
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TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Baokai Zhang,Yanming Wang,Xian-Qiang Pei,Xiaoliang Zhang,Gai Zhao,Qihua Wang,Tingmei Wang
Solvent-free nanofluids have attracted increasing attention in tribological applications due to their distinctive load-bearing lubrication mechanisms, which arise from the synergistic interaction between its surrounding corona/canopy structures. In this study, a nanofluid was developed by incorporating N,S-co-doped carbon dots (N,S-CDs) and Jeffamine M2070 into polyimide (PI) matrix. This composite reduced the COF by 61 % (0.15 ± 0.01) and the wear rate by 95 % (3 ± 0.1643) × 10 −6 mm 3 /N·m compared to pure PI. N,S-CDs adsorbed onto friction surfaces via -NH 2 and -COOH groups, enhancing interfacial bonding and raising peak interface temperature by 126 K. This promoted PI fragment graphitization and robust tribofilms formation. M2070 further smoothed the interface by filling voids. The work proposes a “core-resin interface with casing” strategy for tribological materials in high-load, precision applications.
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CHINESE SCIENCE BULLETIN
·
2013
·Vol. 58
·期 11
·1262-1266
·
IF 1.319
Wang Jing,Liu ZhengPing
Poly(aryl ether ketone)s (PAEKs) were successfully synthesized via nucleophilic aromatic substitution (S N AR) mechanism, using ionic liquids as green reaction media. The influence of various reaction parameters including monomer concentration, dehydration time, polymerization temperature and duration, IL’s cations and anions nature, upon PAEKs molecular weight was investigated. In addition, the peculiarities of hydrogen-bonding ability of ILs were investigated. The interaction of 2,2-bis(4-hydroxyphenyl) propane (bisphenol A) with ILs has a strong influence on PAEKs synthesis. Various moderate molecular weight PAEKs have been obtained in high yields with molecular weights ranging from 10000 to 18000 g mol −1 .
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Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 31
·10660-10672
·
IF 6.4
Yonggang Zhao,Congyan Xu,Zhineng Zhou,Yufei Chen,Ying Zhang,Lang Wu,Xu Su,Xinghuan Hu,Shurong Wang
High-temperature sulfoselenization is essential in producing Cu2ZnSn (S,Se)4 (CZTSSe) thin-film solar cells. At high temperature, the Cu2ZnSn(S,Se)4 phase-transition speed is fast, which causes grain transition to mature quickly, followed by grain decomposition. Although grain surfaces are relatively flat at low temperatures, the small grain and more grain boundaries lead to low efficiency. In this study, a dynamic-temperature sulfoselenization process was adopted to utilize both the advantages of high and low temperatures comprehensively. Different constant- and variable-temperature sulfoselenization processes were developed for annealing Cu–Zn–Sn–S precursor films prepared in the air using dimethyl sulfoxide (DMSO) and 2-methoxyethanol (MOE) dual solvent systems. As a result, CZTSSe films with a flat, holeless, and dense surface, and a single-layer large grain penetrating the whole cross-section were fabricated by a proper variable-temperature sulfoselenization process. Finally, 11.11% total-area power conversion efficiency (12.22% active area efficiency) of CZTSSe solar cells (without antireflection coating) based on the variable-temperature sulfoselenization process was achieved successfully. Compared with the highest efficiency of 9.10% of CZTSSe film solar cells fabricated from the stable-temperature sulfoselenization annealing process, the efficiency was improved by 22%. The variable-temperature annealing processes in this study can also be applied to the preparation of other multi-element thin-film semiconductor materials.
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Journal of Energy Chemistry
·
2022
·
IF 13.599
Qinhua Gu,Yujie Qi,Wuxing Hua,Tongxin Shang,Junnan Chen,Luozhen Jiang,Lina Li,Ming Lu,Yixiao Zhang,Xi Liu,Ying Wan,Bingsen Zhang
The shuttle effect caused by soluble lithium polysulfides (LiPSs) deteriorates multiphase transformation reaction kinetics of sulfur species, and gives rise to an unserviceable lithium-sulfur (Li-S) battery. Catalysis, as a process optimization approach, offers an option to eliminate the intrinsic issues. However, exploring and understanding the role of catalysts on electrode reaction remains critical bottlenecks, particularly as they are prone to continuous evolution under complex dynamic environment. Herein, platinum nanoparticles loaded on MXene nanosheets, as sulfur host, and the action of catalysts on the reaction process are investigated via ex-situ monitors upon solid–liquid–solid chemical transformation of sulfur species. These traces confirm that the high performance originates from electron transfer between catalysts and LiPSs, which lowers the nucleation barrier from liquid LiPSs to solid Li 2 S/Li 2 S 2 . Further, the accelerated liquid–solid conversion can alleviate the accumulation of LiPSs, and boost the reaction kinetics in Li-S batteries. The findings corroborate the electronic modulation between catalysts and LiPSs, which is a generalizable strategy to optimize energy conversion efficiency of Li-S batteries.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2024
·Vol. 149
·期 23
·13759-13771
·
IF 3
Li Wenjie,Long Jiangfeng,Liu Sijia,Wang Peng,Xu Linglin,Lai Yong
To assess the feasibility of using C-S–H seeds to boost the anti-mechanical vibration capabilities of concrete, this work evaluated the mechanical properties, hydration kinetics, phase assemblage of hydrates, and pore structure of Portland cement (PC) and slag cement mortars, at varying dosages of C-S–H seeds. Results reveal that the incorporation of C-S–H seeds negatively affects the vibration resistance of neat PC, while it effectively enhances the vibration resistance of slag cement. The addition of these seeds facilitates cement hydration and improves the early mechanical properties, which is evident in the shortened appearance time of the hydration exothermic peak by almost 50%. The remarkable vibration resistance observed in slag cement primarily stems from the synergistic effect between C-S–H seeds and slag. However, the premature formation of the internal microstructure in neat PC due to C-S–H seeds disrupts the stability of mutual construction between hydration products. The findings indicate that C-S–H seeds can be used in engineering to enhance concrete lifespan, reduce road repair expenses, and enhance construction efficiency.
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CRYSTAL GROWTH & DESIGN
·
2020
·
IF 4.089
Jindong Chen,Chensheng Lin,Shunda Yang,Xiaotian Jiang,Shuangshuang Shi,Yingshuang Sun,Bingxuan Li,Shenghao Fang,Ning Ye
Two ternary infrared nonlinear optical materials Cd4SiS6 (1) and Cd4SiSe6 (2) with polar space group Cc were obtained by mixing d10 configurations-central tetrahedra motifs and nonlinear optical (NLO)-active distorted MIVQ4 tetrahedra motifs in a non-alkaline earth metals-containing system. They exhibited an interesting three-dimensional (3D) framework structure, and millimeter-level single crystals were successfully grown by a chemical transport reaction. Comprehensive optical measurements indicated that they achieve coexistence of good second-harmonic generation (SHG) responses (1.3 and 1.9 × AgGaS2 at 74–106 μm particle size) and high laser-induced damage thresholds (8.6 and 7.1 × AgGaS2 at 1064 nm laser) and wide infrared (IR) transparent regions (0.45–17.6 μm for 1, 0.64–20.3 μm for 2). Furthermore, theoretical studies revealed that their SHG effects originate from two functional building motifs (FBMs) CdQ4 and SiQ4 tetrahedra, shedding light on the exploration of new IR NLO materials with mixed FBMs.
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Journal of Energy Storage
·
2025
·
IF 9.8
Yuan Li,Chenyao Wang,Yuanzhi Zhu,Delong Xie,Xinzhi Chen,Yi Mei
With high theoretical energy density and low cost, lithium‑sulfur batteries are viewed as next-generation energy storage technologies. But issues like the polysulfide shuttle effect and electrolyte safety concerns hinder their commercialization. Here, we present a novel cathode-supported black phosphorene modified composite polymer solid electrolyte membrane (CS-BP-CPSEM) made from polyethylene oxide-polyvinylidene fluoride polyblend and black phosphorene. Black phosphorene nanosheets, produced via electrochemically assisted liquid-phase exfoliation, are uniformly dispersed in the composite polymer matrix and directly multilayer tape-cast onto the cathode surface. This design improves interfacial contact and Li + transport. The optimized CS-BP-CPSEM with 0.3 wt% BP shows a 5.37 V electrochemical stability window and 1.3 × 10 −3 S cm −1 ionic conductivity at 60 °C. Polysulfide adsorption tests confirm black phosphorene's strong anchoring ability, effectively lessening the shuttle effect. Consequently, the assembled all solid-state lithium sulfur battery (ASSLSB) delivers a high discharge capacity of 1322 mAh g −1 and maintains 453 mAh g −1 after over 100 cycles at 0.05C. This work offers a promising interfacial engineering strategy using two-dimensional materials to boost high-energy-density and long-cycle-life solid-state Li-S battery development.
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JOURNAL OF MEDICINAL CHEMISTRY
·
2026
·
IF 7.3
Wang Mengqi,Li Xinge,Bai Yan,Luo Wenhan,Gao Yashi,Xie Weilin,Su Chenhe,Chang Junbiao,Zhu Bo
Metabolic
reprogramming relying on abnormal glycolysis
fuels tumor
growth, rendering the rate-limiting glycolytic enzyme PFKL a potential
anticancer target; yet no PFKL inhibitor has entered clinical trials.
Herein, we synthesized a series of S-benzylisothiourea imidazolium
salt derivatives and identified compound 10w , which potently
inhibited breast cancer cell proliferation, suppressed glycolysis,
and induced apoptosis. Drug Affinity Responsive Target Stability (DARTS)
assays revealed PFKL as the direct cellular target of 10w . Surface plasmon resonance (SPR), cellular thermal shift assay (CETSA),
and molecular docking studies confirmed the binding of 10w to PFKL. Enzymatic activity assays further demonstrated that 10w inhibited PFKL activity. Notably, 10w exerted
no obvious effects on glycolysis or glycolytic capacity in PFKL-knockdown
breast cancer cells. In vivo assays showed that 10w exerted significant antitumor efficacy and enhanced the
efficacy of anti-PD-L1 immunotherapy. In conclusion, compound 10w targets PFKL as a promising therapeutic agent for breast
cancer.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 9.2
Yuhong Tang,Ziwei Wang,Fang Liao,Kunpeng Song
Direct seawater electrolysis offers a sustainable route for hydrogen production, but chloride ions cause side reactions and corrosion. Here, we report a heterogeneous (Ni,Bi)-doped MoS 2 electrocatalyst with staggered nanosheets grown on carbon cloth via one-step hydrothermal synthesis. The (NiBi 0.2 )S@MoS 2 catalyst achieves low overpotentials of 112 mV (pure water) and 114 mV (simulated seawater) at 10 mA cm −2 , with Tafel slopes of 61 and 69 mV dec −1 , respectively. It requires only 1.76 V to reach 100 mA cm −2 in two-electrode overall water splitting and operates stably for over 24 h in alkaline seawater. Bi doping promotes electron transfer from Ni and Mo to S sites, optimizing active center configuration, while heterogeneous interfaces enhance H 2 O dissociation and hydrogen chemisorption. This work provides insights for designing efficient, low-cost, and corrosion-resistant electrocatalysts for direct seawater splitting.
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NANO
·
2024
·
IF 1
Junxiang Mo,Jun Li,Jing Li,Yashan Li
The development of composite materials is a key area of research for enhancing the electrochemical performance of electrode materials. In this study, NiCo–S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using binary metal–organic frameworks (MOFs) as the sacrificial template through a two-step hydrothermal method. Ni–MOF was then deposited on the surface of NiCo–S/NF through the hydrothermal method and subsequently converted into Ni(OH) 2 through a subsequent alkalization treatment. The duration of the Ni–MOF hydrothermal process was varied as a parameter. NiCo–S@Ni–MOF/NF was prepared through hydrothermal reaction for 6 h, 9 h and 12 h, followed by heating in a 6 M KOH solution at 75 ∘ C for 6 h in a water bath. The electrode materials with the best morphology and electrochemical properties were obtained when the hydrothermal reaction time was 6 h. The optimized electrode had a specific capacity of 2533.2 F ⋅ g − 1 at 1 A ⋅ g − 1 and a capacity retention rate of 60.8% at 10 A ⋅ g − 1 , which indicated good rate performance. Additionally, the electrode material demonstrated excellent cycling stability, with a capacity retention rate of 95.3% after 5000 cycles at 50 mV ⋅ s − 1 . The energy density of the hybrid supercapacitor device assembled from this electrode material was 33.5 Wh ⋅ kg − 1 when the power density was 849.89 W ⋅ kg − 1 at a current density of 1 A ⋅ g − 1 .
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Yan Ge,Caiyi Fan,Qiyue Zhang,Hui Yang,Saisai Yuan,Bin Xu
In situ synthesis of S-scheme COF/Ce-MOF heterojunctions significantly enhances photocatalytic H 2 O 2 production under ambient conditions. The directional charge separation, precise band alignment, and synergistic dual active sites of the heterojunction enable efficient, stable, and selective H 2 O 2 generation. The CRM (Ce-MOF/COF) heterojunction delivers an H 2 O 2 yield that is 11.2-fold higher than pristine Ce-MOF and 3.1-fold higher than pure COF. Moreover, the CRM heterojunction maintains excellent productivity over a 6-h reaction period. In situ X-ray photoelectron spectroscopy (XPS) and density functional theory (DFT) analyses revealed not only the elemental composition and chemical states at the heterojunction interface but also the interfacial electronic redistribution and band alignment responsible for the enhanced photocatalytic performance. Specifically, the combined experimental and theoretical results confirmed the presence of strong interfacial coupling, the formation of an internal electric field, and the establishment of an S-scheme charge transfer pathway, all of which contribute to efficient charge separation and the preservation of high redox potentials, thereby enabling superior H 2 O 2 generation activity. Overall, this work not only deepens the understanding of MOF-based photocatalysts but also provides valuable design principles for constructing next-generation heterojunction materials with superior efficiency in photocatalytic H 2 O 2 production for environmental remediation.
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