Nature Communications
·
2026
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IF 18.1
Li Rujuan,Pan Shuyao,Liu Zhiming,Chen Shengli,Sun Pingchuan,Wang Fenfen
The development of high-performance elastomers that are simultaneously strong, crack-tolerant, and wear-resistant remains a persistent challenge. Herein, we design bio-inspired semicarbazide chain extender featuring high-density hydrogen-bonding sites to synthesize poly(urethane-urea) (PUU). The use of two such extenders creates geometric confinement that promotes ordered H-bonding arrays, which synergistically enhances the mechanical performance. The resulting PUU-HI elastomer exhibits a nanoscale-ordered phase-separated structure and maximized H-bonding, achieving a tensile strength of 120.2 MPa, toughness of 400.5 MJ m −3 and true fracture stress of 1.3 GPa, even surpassing spider silk. The architecture additionally delivers high crack tolerance, fatigue resistance, and high wear resistance, making it ideal for stable, long-term used triboelectric nanogenerator interfaces. Solid-state NMR reveals the geometric-confinement-induced ordered and high-density H-bonding structure in hard domain for efficient energy dissipation. By designing tailored H-bonding motifs and amplifying supramolecular interactions via geometric confinement, this work offers a promising strategy for developing mechanically robust and durable elastomers.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Faisal Irshad,Dan Zhang,Hamzah A.S.M. Yaseen,Xianming Zhu,Muhammad Chawla,Shengping Wang,Yongli Shen,Xinbin Ma
Pd/H-MOR exhibits superior catalytic activity and stability for CO 2 hydrogenation to formateover other Pd/Zeolites and M/H-MOR. • Brønsted acid sites at Pd-H-MOR interface polarize CO 2 , while highly dispersed Pd nanoparticles dissociate H 2 barrierlessly. • Low Si/Al ratio optimizes metal-support synergy and reducing apparent activation energy to HCOOH. • Bicarbonate identified as the key reaction intermediates by in-situ DRIFTS and DFT study. Catalytic hydrogenation is a promising route for CO 2 conversion, yet the highly efficient formation of formic acid remains challenging. Herein, Pd nanoparticles dispersed on mordenite (Pd/H-MOR) are reported as an efficient and stable catalyst for CO 2 hydrogenation to produce formates. Under optimized conditions, Pd/H-MOR achieved an intrinsic turnover number of 1828 and a turnover frequency of 914 h −1 at 120 °C, surpassing all the other prepared catalysts with different metal active sites and zeolite supports. The high activity arises from the co-effect of Pd and the H-MOR support: Pd sites dissociate H 2 into active hydrogen, while Brønsted acid sites enhance CO 2 adsorption via polarization and stabilize bicarbonate intermediates, which subsequently convert to formates. Density functional theory (DFT) results revealed that Pd/H-MOR lowers the activation barriers for both H 2 dissociation and CO 2 activation at the Pd-MOR interface and combined with in-situ DRIFTS, identifying surface bicarbonates as the key reactive intermediates en-route to formate formation. Comparatively, kinetic studies of Pd/H-MOR revealed a reduced apparent activation energy of 15.81 ± 0.79 kJmol −1 , reflecting strong metal-support interactions, while the observed R = k ∙ P CO 2 0.56 ∙ P H 2 0.62 reaction orders indicate that the reaction rate is weakly dependent of H 2 and CO 2 pressures but strongly dependent on the nature of the metal and the zeolite support. This work highlights metal dispersion and support acidity as key factors for CO 2 hydrogenation. Download: Download high-res image (224KB) Download: Download full-size image
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Catalysts
·
2025
·Vol. 15
·期 7
·634
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IF 4
Huijun Xin,Zudong Shen,Xiaojie Li,Jinjie Fang,Haoran Sun,Chen Deng,Linlin Zhou,Yun Kuang
Seawater electrolysis offers a sustainable route for large-scale, carbon-neutral hydrogen production, but its industrial application is limited by the poor efficiency and durability of current electrocatalysts under high current densities. Herein, we synthesized ultrasmall Pt nanoclusters uniformly anchored on FeCoNi phosphide nanosheet arrays, forming a composite catalyst with outstanding hydrogen evolution reaction (HER) performance in alkaline seawater. The catalyst achieves an ultralow overpotential of 17 mV at −10 mA cm−2, far surpassing commercial Pt/C, and stably delivers industrial-level current densities up to 2000 A m−2for over 2400 h with minimal voltage degradation and low energy consumption (4.16 kWh/Nm3H2). X-ray photoelectron spectroscopy revealed strong interfacial electronic interactions between Pt and Fe/Co species, involving electron transfer from Pt that modulates its electronic structure, weakens hydrogen adsorption, and enhances both HER kinetics and Pt dispersion. This work presents a scalable and robust catalyst platform, bridging the gap between laboratory research and industrial seawater electrolysis for green hydrogen production.
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INORGANIC CHEMISTRY
·
2025
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IF 4.7
Qi-Jia Jiang,Ke Cao
A rhodium-catalyzed universal protocol for selective chalcogenation of B(4)-H of o-carboranes with diaryl diselenides, diaryl disulfides, and diphenyl ditelluride has been developed for the first time. A series of B(4)-Se/S/Te-o-carborane derivatives decorated with various kinds of active groups have been synthesized with excellent yields and regioselectivity. Based on control experiments, a plausible mechanism involving radical and direct oxidative addition process is proposed. This work would be an important reference for the design of new reactions for the chalcogenation of boron clusters.
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ADVANCED MATERIALS
·
2023
·Vol. 35
·期 20
·2210828
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IF 29.4
Nan Wei,Liangcheng He,Changwei Wu,Dabiao Lu,Ruohan Li,Haiwen Shi,Haihui Lan,Yao Wen,Jun He,Youwen Long,Xiao Wang,Mengqi Zeng,Lei Fu
2D room-temperature magnetic materials are of great importance in future spintronic devices while only very few are reported. Herein, a plasma-enhanced chemical vapor deposition approach is exploited to construct the 2D room-temperature magnetic MnGa 4 -H single crystal with a thickness down to 2.2 nm. The employment of H 2 plasma makes hydrogen atoms can be easily inserted into the MnGa 4 lattice to modulate the atomic distance and charge state, thereby ferrimagnetism can be achieved without destroying the structural configuration. The as-obtained 2D MnGa 4 -H crystal is high-quality, air-stable, and thermo-stable, demonstrating robust and stable room-temperature magnetism with a high Curie temperature above 620 K. This work enriches the 2D room-temperature magnetic family and opens up the possibility for the development of spintronic devices based on 2D magnetic alloys.
研究领域:
材料科学
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物理学
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Materials
·
2020
·Vol. 13
·期 21
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IF 3.057
Lijuan He,Junji Zeng,Yuewu Huang,Xiong Yang,Dawei Li,Yu Chen,Xiangyu Yang,Dongbo Wang,Yunxiao Zhang,Zhendong Fu
Low-density polyethylene (LDPE), as an excellent dielectric insulating material, is widely used in electrical equipment insulation, whereas its low thermal conductivity limits its further development and application. Hexagonal boron nitride (h-BN) filler was introduced into LDPE to tailor the properties of LDPE to make it more suitable for high-voltage direct current (HVDC) cable insulation application. We employed melt blending to prepare h-BN/LDPE thermally conductive composite insulation materials with different contents. We focused on investigating the micromorphology and structure, thermal properties, and electrical properties of h-BN/LDPE composites, and explained the space charge characteristics. The scanning electron microscope (SEM) results indicate that the h-BN filler has good dispersibility in the LDPE at a low loading (less than 3 phr (3 g of micron h-BN particles filled in 100g of LDPE)), as well as no heterogeneous phase formation. The results of thermal conductivity analysis show that the introduction of h-BN filler can significantly improve the thermal conductivity of composites. The thermal conductivity of the composite samples with 10 phr h-BN particles is as high as 0.51 W/(m·K), which is 57% higher than that of pure LDPE. The electrical performance illustrates that h-BN filler doping can significantly inhibit space charge injection and reduce space charge accumulation in LDPE. The interface effect between h-BN and the substrate reduces the carrier mobility, thereby suppressing the injection of charges of the same polarity and increasing the direct-current (DC) breakdown strength. h-BN/LDPE composite doped with 3 phr h-BN particles has excellent space charge suppression effect and high DC breakdown strength, which is 14.3% higher than that of pure LDPE.
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Laser & Photonics Reviews
·
2022
·Vol. 17
·期 1
·2200416
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IF 10.947
Haiyang Liu,Xuanli Zheng,Gaohong Liu,Jun Yin,Congming Ke,Weihuang Yang,Yaping Wu,Zhiming Wu,Xu Li,Chunmiao Zhang,Feiya Xu,Junyong Kang
Two unequal K and K' valleys in transition metal dichalcogenides (TMDC) enable large and controllable polarization, which is the cornerstone of emerging valleytronic applications. Here, a phase engineering strategy aided by resonant plasmonic coupling is proposed to manipulate the valley degree of freedom. Compared with the pristine WSe 2 monolayer, the hybrid H/T phase WSe 2 exhibits an enhanced degrees of circular polarization (DCP) and valley polarization (DVP). As further aided by the designed Au plasmonic array, the T phase facilitates the excitons process and promotes the charge transfer in WSe 2 /Au interface under the plasmonic-enhanced electromagnetic field. Consequently, both the DCP and DVP values are considerably enhanced to 38.5% (15.6%) and 15.1% (7.6%) at 13 K (room temperature), respectively. Through finite difference time domain simulations (FDTD), the near-field excitation, exciton decay, and far-field detection processes are systematically analyzed, and highly consistent polarizations are quantitatively achieved between the theoretical and the experimental results. Accordingly, the high polarizations are revealed to be contributed by the increased exciton generation and radiation efficiency, chiral electromagnetic field, and non-equilibrium spin distribution in the hybrid phase. The research presented here illustrates a promising route to control the spin and valley degrees of freedom in TMDC materials.
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JOURNAL OF ORGANIC CHEMISTRY
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2020
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IF 4.335
Ya-Nan Ding,Wei-Yu Shi,Ce Liu,Nian Zheng,Ming Li,Yang An,Zhe Zhang,Cui-Tian Wang,Bo-Sheng Zhang,Yong-Min Liang
This report describes the first example of palladium-catalyzed ortho-C–H glycosylation/ipso-alkenylation of aryl iodides, and the easily accessible glycosyl chlorides are used as a glycosylation reagent. The reaction is compatible with the functional groups of the substrates, and a series of C-aryl glycosides have been synthesized in good to excellent yield and with excellent diastereoselectivity. It is found that a cheap 5-norbornene-2-carbonitrile as a transient mediator can effectively promote this reaction. In addition, ipso-arylation and cyanation were also realized by the strategy.
研究领域:
有机化学
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药物化学
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合成方法学
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过渡金属催化
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碳水化合物化学
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JOURNAL OF CONTROLLED RELEASE
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2026
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IF 11.5
Jing Zuo,Yichun Huang,Hailong Tian,Siyuan Qin,Yonghao Yan,Han Yan,Yining Jiang,Lei Li,Shiqi Wang,Yongfeng Jia,Yuan Zhao,Canhua Huang
Disrupting mitochondrial metabolism and reactivating antitumor immunity offers a compelling strategy to enhance therapeutic outcomes in glioblastoma (GBM). Here, we report a mitochondria-targeting nanoplatform that integrates GBM-selective delivery, metabolic disruption, and immune activation for synergistic GBM therapy. The nanoplatform co-encapsulates L820—a conjugate of lonidamine (LND) and IR820 with mitochondrial affinity—and the immunomodulator TP5 into a ZIF-8 framework, which is coated with H-ferritin (HFn) for TfR1-mediated blood–brain barrier (BBB) penetration and GBM targeting. After endocytosis and GBM-specific, acid-triggered degradation, L820 accumulates in mitochondria and causes profound mitochondrial dysfunction, including membrane potential collapse, ATP depletion, and AMPK activation. Concurrently, Zn 2+ released from ZIF-8 suppresses GLUT1 and HIF-1α, impairing glycolysis and reducing CD47 expression. These dual metabolic stresses induce mitochondrial DNA (mtDNA) release and activate the cGAS–STING pathway, promoting type I interferon production and immunogenic cell death. TP5 enhances T cell activation while suppressing Tregs, further remodeling the GBM immune microenvironment. This mitochondria-focused strategy achieves potent metabolic interference and immune reprogramming for effective GBM treatment.
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Results in Chemistry
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2026
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IF 5.8
Yige Yan,Ming Fu,Jiaqi He,Dawei He,Yongsheng Wang
The practical application of aqueous supercapacitors is constrained by the balance between cycle life and power characteristics. This study develops a composite electrode based on hexagonal boron nitride/carbon nanotubes (h-BN/CNTs), featuring fabrication processes through thermal annealing and electrostatic assembly. The material ingeniously combines the chemical inertness and structural stability of h-BN with the conductive network of CNTs, successfully constructing an electrode with highly stable mechanical and electrochemical interfaces. The assembled symmetric supercapacitor demonstrates excellent long-term operational reliability, maintaining over 90% stability after 10,000 charge-discharge cycles while exhibiting outstanding rate performance. The core value of this work lies in its application to h-BN platforms for high-power, high-frequency optical devices, successfully transforming it into a high-performance electrochemical energy storage component. The material has a high power density of 600 W/kg and a fairly good energy density of 13.6 Wh/kg in the symmetric two-electrode test. This device construction strategy based on a unified core material system creates compatibility advantages for material substrate and process-level integration with high-power optical devices, providing a material foundation for developing next-generation optoelectronic integrated systems.
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CHINESE JOURNAL OF CATALYSIS
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2026
·
IF 17.2
Jun Ke,Jiaxi Zhang,Longhai Zhang,Chengzhi Zhong,Huiyu Song,Li Du,Yuwei Zhang,Zhiming Cui
Interfacial hydrogen bond connectivity (HBC) of electrical double layer (EDL) has been identified as a critical factor for many electrocatalytic reactions, However, there is a lack of systematic investigation on the correlation between HBC and oxygen evolution reaction (OER) kinetics, and the advanced strategies to rationally manipulate HBC. Herein, we proposed an interfacial charge manipulation (ICM) methodology to engineer HBC and enhance OER kinetic of various electrocatalysts including Ni3FeN and the benchmark oxides (RuO 2 , Ni(OH) 2 , Co(OH) 2 , FeNi LDH, and FeCo LDH). With Ni 3 FeN as a model catalyst, we systematically studied the influence of different anion chemisorption (NO 3 – , SO 4 2– , and PO 4 3– ) on HBC and establishing a positive correlation between OER activity and the charge of anions. Electrochemical tests show that the modified Ni 3 FeN catalysts with NO 3 – , SO 4 2– , and PO 4 3– exhibit 1.1-, 1.4-, and 2.3-fold activity enhancements at 1.5–1.6 V vs. RHE relative to the raw Ni 3 FeN, respectively. The in-situ spectroscopy and AIMD reveal that high anion charges increase four-hydrogen-bonded water populations, strengthening HBC to promote proton transfer across the EDL during deprotonations step and lower energy obstacle of the rate-determining step. This work has offered a new paradigm to regulate the interfacial HBC at molecular scale for promoting OER.
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CERAMICS INTERNATIONAL
·
2014
·
IF 2.086
Yin Xu,Tianyu Ma,Xinhua Wang,Yinzhu Jiang,Mi Yan
Influences of ZrO 2 additive on the microstructure and high temperature oxidation behavior of h-BN/ZrO 2 composites have been investigated. In addition to the enhanced strength , the oxidation reaction between boron and oxygen can be effectively hindered even at 1200 °C when adding 20 wt% ZrO 2 into the h-BN matrix. Besides the doped ZrO 2 particles, ZrB 2 and ZrB were also formed in the composites after sintering via the reaction between ZrO 2 and h-BN. The oxidation product ZrO 2 of these Zr–B compounds can act as protective layer during oxidation, which covers the sample surface and prevents further penetration of oxygen. Good oxidation resistance at 1200 °C and high strength make h-BN/ZrO 2 composites promising materials for high temperature applications.
研究领域:
材料科学
·
高温材料
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