ACS Nano
·
2025
·
IF 16
Shuai Wang,Haoran Wang,Jiguo Tu,Lei Huang,Shenzhen Deng,Bingang Xu,Lei Wei
Hydrogen evolution reaction and Zn dendrite growth, originating from high water activity and the adverse competition between the electrochemical kinetics and mass transfer, are the main constraints for the commercial applications of the aqueous zinc-based batteries. Herein, a weak H-bond interface with a suspension electrolyte is developed by adding TiO2 nanoparticles into the electrolytes. Owing to the strong polarity of Ti–O bonds in TiO2, abundant hydroxyl functional groups are formed between the TiO2[110] active surface and aqueous environment, which can produce a weak H-bond interface by disrupting the initial H-bond networks between the water molecules, thereby accelerating the mass transfer of Zn2+ and reducing the water activity. In consequence, the Zn||Zn symmetrical cells display reversible Zn plating/stripping behaviors with a high Coulombic efficiency of 99.7% over 700 cycles. Moreover, the TiO2-based suspension strategy is also applicable to other zinc salt systems and exhibits fast plating/stripping behaviors. The suspension electrolyte enables long-term full cells, including Zn||PANI hybrid capacitors and Zn||ZnVO full batteries.
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Nanomedicine-Nanotechnology Biology and Medicine
·
2021
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IF 6.458
Song-Bin Yang,Xiao-Liu Li,Kai Li,Xin-Xin Zhang,Mei Yuan,Yi-Sha Guo,Xia Bi
Stroke is one of the most serious problems that seriously affect people's health and brings huge economic burden to society. The development of new nanocarriers with desired degradability and targeted ability is of great significance for efficient drug delivery. In recent years, nano drug delivery system has developed rapidly and applied to treat ischemic stroke . Here, we report the synthesis and functionalization of monodisperse hollow structured MnO 2 (H-MnO 2 ). The highly monodisperse H-MnO 2 with uniform morphology was obtained by in situ growing MnO 2 on solid silica nanoparticles and subsequently removing the silica core. After successive modification of poly ethylene glycol(PEG), we further verified their protective effect on ischemic stroke in our study.
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SYNTHETIC COMMUNICATIONS
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2018
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IF 1.377
Xinyuan Ma,Qiong Mo,Jie Chang,Kai Xie
This paper mainly studied Pd-catalyzed regioselective chlorination of disubstituted 1,2,3-triazoles directed by the 1,2,3-triazole ring. A series of regioselective chlorinated products were synthesized in 47–86% yields using Pd(OAc)2 as a catalyst and CuCl2 as a chlorinated reagent. This method provides a new mean for the synthesis of 1,2,3-triazole halides which combines the formation of C-X bond with C-H activation.
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JOURNAL OF CONTROLLED RELEASE
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2016
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IF 7.441
Xiangting Zhuang,Tingting Wu,Yongdan Zhao,Xiaomeng Hu,Yuling Bao,Yuanyuan Guo,Qingle Song,Gao Li,Songwei Tan,Zhiping Zhang
Nanoimmunotherapy, the application of nanotechnology for sustained and targeted delivery of antigens to dendritic cells (DCs), has attracted much attention in stimulating antigen-specific immune response for antitumor therapy. In order to in situ deliver antigens to DCs for efficient antigen presentation and subsequent induction of strong cytotoxic T lymphocytes (CTL) response, here we developed a multi-peptide (TRP2 180–188 and HGP100 25–33 ) and toll-like receptor 4 agonist (monophosphoryl lipid A) codelivery system based on lipid-coated zinc phosphate hybrid nanoparticles (LZnP NPs). This delivery system equips with the chelating property of zinc to realize the high encapsulation efficiency with antigenic peptides and the influence on immune system with adjuvant-like feature. The combination of H-2K b and H-2D b -restricted peptides could provide multiple epitopes as the target of specific MHC alleles, making tumor more difficult to escape from the surveillance of immune system. The formulated LZnP nano-vaccine with the size of 30 nm and outer leaflet lipid exhibited antitumor immunity as the secretion of cytokines in vitro and increased CD8 + T cell response from IFN-γ ELISPOT analysis ex vivo . The antitumor effects were further evidenced from the prophylactic, therapeutic and metastatic melanoma tumor models compared with free antigens and single peptide-loaded nano-vaccines. These results validate the benefit of LZnP-based vaccine for antitumor immunity and indicate that co-delivery of tumor antigens along with adjuvant may be an optimized strategy for tumor immunotherapy .
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Molecular Catalysis
·
2020
·
IF 3.687
Hai-Min Shen,Lei Liu,Bei Qi,Meng-Yun Hu,Hong-Liang Ye,Yuan-Bin She
Non-solvent and non-additive oxidation of secondary benzylic C–H bonds to aromatic ketones utilizing simple metalloporphyrins as catalysts and O 2 was investigated systematically. Based on systematical studies on reaction parameters, such as the structures of porphyrins, the types of central metals, the amount of catalyst, the pressure of oxygen, and the temperature, most aromatics with secondary benzylic C–H had been converted efficiently and selectively to their corresponding aromatic ketones catalyzed by the optimized metalloporphyrin catalyst T(2,3,6-triCl)PPCo. And the selectivity towards aromatic ketones reached up to 80 %–95 % with acceptable conversions in lower catalyst-loading (2.4 × 10 −3 %, mol/mol). The highest selectivity was achieved for substrate 1,2,3,4-tetrahydronaphthalene with the selectivity of 95.0 % in the conversion of 46.3 %. The superior catalytic performance of T(2,3,6-triCl)PPCo could be mainly ascribed to its excellent plane structure, superior ability for electron transfer and low positive charge around the central metal. All of above properties promoted the formation of catalytic active species high-valence cobalt-oxo complexes, and facilitated the approach of substrates to the catalytic active centers. This work presented an optimized balance among higher selectivity, milder conditions, lower catalyst-loading, and simpler catalysts compared with current documents, which was not only an efficient, practical and significant strategy to functionalize the widely available aromatics possessing secondary benzylic C H with high efficiency and selectivity under milder conditions, but also an important instance in the effective functionalization and utilization of other C H bonds employing optimized catalytic systems based on metalloporphyrins.
研究领域:
有机化学
·
催化化学
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SURFACE & COATINGS TECHNOLOGY
·
2024
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IF 5.3
Naiwen Liang,Yangfan Li,Yutong Meng,Fan Zhang,Wenqiang Zhu,Jiang Yin,Yahui Yang,Hui Wang,Lishan Yang
Silicon (Si)-based materials have been identified as next-generation preferred anode materials owing to their ultra-high specific capacity, environmental friendliness and low price. However, the defects in Si-based materials ( e.g., the large volume change with unstable solid electrolyte interface during repeated lithiation/delithiation processes and low intrinsic conductivity), will significantly destroy the integrity of electrode structure and get slow dynamic performance, resulting in a fast capacity fading. Herein, we prepared various silicon‑aluminum‑copper dendrites (named SCD-1/2/3) via a two-step displacement dealloying process, which was devoted to simultaneously improving structural instability, low ionic/electronic conductivity of Si crystals. Therefore, the SCD-2 anode possessed an initial Coulombic efficiency of 80 % and exhibited a superior capacity of 1851.7 mA h g −1 at 1 A g −1 after 100 cycles. This paper provides a simple method to gain the Si anodes with high initial Coulombic efficiency, relieved volume expansion and long cycling life.
研究领域:
材料科学
·
能源存储技术
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Nan Jiang,Jinlin Zhu,Chang Li,Xi Liu,Xinyu Guo,Chengcheng Zhu,Yan Chen,Yi Zhou,Wenjun Deng,Rui Li
Aqueous zinc-ion batteries (AZIBs) have recently been paid great attention due to their robust safety features, high theoretical capacity, and eco-friendliness, yet their practical application is hindered by the serious dendrite formation and side reactions of Zn metal anode during cycling. Herein, a low-cost small molecule, nicotinamide (NIC), is proposed as an electrolyte additive to effectively regulate the Zn interface, achieving a highly reversible and stable zinc anode without dendrites. NIC molecules not only modify the Zn 2+ solvation structure but also preferentially adsorb on the Zn surface than solvated H 2 O to protect the Zn anode and provide numerous nucleation sites for Zn 2+ to homogenize Zn deposition. Consequently, the addition of 1 wt% NIC enables Zn||Zn symmetric cells an ultra-long lifespan of over 9700 h at 1 mA cm −2 , which expands nearly 808 times compared to that without NIC. The advantages of NIC additives are further demonstrated in NaVO||Zn full cells, which exhibit exceptional capacity retention of 90.3 % after 1000 cycles with a high Coulombic efficiency of 99.9 % at 1 A/g, while the cell operates for only 42 cycles without NIC additive. This strategy presents a promising approach to solving the anode problem, fostering advancements in practical AZIBs.
研究领域:
材料科学
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电化学
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能源存储
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Arthropod-Plant Interactions
·
2026
·Vol. 20
·期 5
·71
·
IF 1.7
Mao Jie-Wen,Luo Qian-Wen,Duan Shao-Ting,Zhang Meng-Hao,Liu Xiao-Guang,Guo Xian-Ru,Liu Yan-Min,Li Wei-Zheng
The specialist Helicoverpa assulta and the generalist Helicoverpa armigera are closely related species in Noctuidae. To elucidate the chemical basis underlying their differential oviposition responses to tomato, we compared the oviposition and walking responses of adult females and larvae of both species to tomato volatiles as well as derived synthetic blends. Dichloromethane and hexane extracts of tomato leaves deterred oviposition by H. assulta females. In contrast, all three extracts significantly attracted oviposition by H. armigera females. The components of the dichloromethane extract of tomato leaves were classified according to biosynthetic pathways (acetylmalonate, acetyl‑mevalonate, and shikimate pathways), and four blends were prepared based on their relative percentages in the extract: Blend 1 (green leaf volatiles), Blend 2 (aromatic compounds), Blend 3 (terpenoids), and Blend 4 (the full blend, contained all components that contained in the Blends 1 ~ 3). All blends significantly deterred oviposition by H. assulta females, with Blend 4 being the most effective. Only Blends 2 and 3 significantly attracted oviposition by H. armigera females. Larval walking bioassays on a locomotion compensator indicat that the differential host use is attributable to adult oviposition preference, rather than to larval olfactory discrimination between host and non-host volatiles. In field trials, the full blend effectively reduced egg deposition by H. assulta rather than H. armigera on tobacco plants. All together, the oviposition deterrence of H. assulta by tomato appears to be regulated by a “partial blend” of compounds commonly found across the plant kingdom, not by tomato-specific unique components.
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Nature Communications
·
2026
·
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
·
2026
·
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
·
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
·
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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