Journal of Power Sources Advances
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2020
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IF 0
Qiuhong Wang,Walid A. Daoud
Flow battery is a promising energy storage technology for facilitating utilization of renewable resources. While new types of flow batteries have been explored toward high energy density, hampering the power density due to high electrolyte viscosity and sluggish reaction kinetics. Discovery of an aqueous electrolyte with multi-electron transfer reaction is thus favorable for both high energy and power densities due to its multiple charge stored at the same concentration. Both criteria are crucial to improve the flexibility of cell design and widen the application potential. Herein, bismuth is pioneered as negative electrolyte (negolyte) for hybrid flow battery owing to its three-electron reaction and the significantly increased solubility in methanesulfonic acid. In conjunction with cerium electrolyte, a volumetric energy density of 90 Wh L −1 is achieved and simultaneously a high power density of 295 mW cm −2 at 90% state-of-charge is demonstrated using low-cost carbon electrode. Furthermore, a high volumetric capacity of 120 Ah L −1 is reached via adopting graphite felt, which is 100% of the theoretical specific capacity of 1.5 M bismuth negolyte.
研究领域:
电化学储能
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能源材料
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功能材料
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应用电化学
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可再生能源存储
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DOI
AICHE JOURNAL
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2026
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IF 4.4
Xuemei Han,Zhihong Ma,Wenjin Ma,Weizhong Zheng,Weizhen Sun,Ling Zhao
The catalytic dehydration of sorbitol to isosorbide is a key route for the sustainable production of bio-based platform chemicals, yet low product yield and severe side reactions remain critical challenges. In this work, how the hydrogen-bonding network of deep eutectic solvents (DESs) mediates the highly efficient and selective sorbitol dehydration was investigated. Among different DESs, betaine/methanesulfonic acid (Bet-MSA) with 1.0:1.1 molar ratio shows a maximum isosorbide yield of 85.03% under optimized conditions. The strong hydrogen-bonding network within DESs effectively activates sorbitol molecules, stabilizes reaction intermediates, and lowers the activation energy of the desired pathway, thereby enhancing catalytic selectivity. The non-steady state kinetic model can well predict the concentration changes of key components, in which Bet-MSA contributes to lower activation energy for the desired sorbitol formation pathway through the hydrogen-bonding interactions, thereby enhancing selectivity. This work provides mechanistic insights for the design and optimization of industrial sorbitol dehydration processes.
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EUROPEAN POLYMER JOURNAL
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2026
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IF 6.8
Jinhui Liu,Zipeng Zhang,Yueqin Yu,Yuetao Liu,Jianzhi Liu
Injectable photo-crosslinkable adhesive hydrogels represent an effective strategy for achieving in vivo wound hemostasis and promoting healing. However, developing adhesive gel dressings that simultaneously possess strong tissue adhesion, injectability, photo-curability, inherent antimicrobial properties, and excellent biocompatibility remains a significant challenge. Herein, by employing photo-controlled reversible addition–fragmentation chain transfer (RAFT) polymerization, in which the polymerization process can be “turned on” and “suspend” by regulating the light source, a spatiotemporally controllable hydrogel was prepared using the photo-RAFT agent (InZ), acrylic acid (AA), and acryloyl chitosan (AeCS).Benefiting from the properties of photoinitiator InZ, the photopolymerization process can be precisely regulated under ambient conditions, allowing for in situ gel formation directly at wound sites. The obtained hydrogel exhibited excellent mechanical properties, swelling behavior, and biocompatibility (>80%). It showed strong adhesion (>11.8kpa) and repeatable adhesiveness to skin tissue and also adhered well to various substrates. Moreover, it displayed good inherent antimicrobial capability against Escherichia coli (73.4%∼89.96%) and Staphylococcus aureus (72.7%∼87.04%). By introducing a natural macromolecular crosslinker, the hydrogel was endowed with degradability. Notably, based on the characteristics of photo-controlled RAFT polymerization, a prepolymer solution with tunable viscosity was obtained, endowing the hydrogel with injectability. Taken together, these results indicate that the constructed hydrogel holds great potential as a biomedical material.
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POLYMERS FOR ADVANCED TECHNOLOGIES
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2026
·Vol. 37
·期 3
·e70553
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IF 3.8
Qinglong Zhang,Wen Zheng,Wangyang Lu,Wenxing Chen
The development of high-performance polybenzoxazole (PBO) materials relies on novel AB-type monomers to overcome challenges in stoichiometric control and enhance material processability. However, significant challenges remain in the molecular structure innovation and efficient synthesis of such monomers. This study successfully developed a novel AB-type self-condensing monomer based on a benzimidazole structure—2-(3-amino-4-hydroxyphenyl)-5-carboxylic acid-1 H -benzimidazole (ACBP). Starting from 3,4-diaminobenzoic acid and 3-nitro-4-hydroxybenzaldehyde, the monomer was efficiently synthesized through cyclization condensation and reduction reactions. This method offered advantages such as simplicity, environmental benignity, and low energy consumption, and achieved a high yield. Experimental results demonstrated that ACBP exhibited excellent storage stability. Furthermore, the monomer was subjected to a programmed temperature-controlled polycondensation reaction in polyphosphoric acid and successfully yielded poly[2,5-(1 H -benzimidazol-2-yl)benzoxazole] (ABPBIO) with an intrinsic viscosity as high as 5.9 dL/g. The structures of the monomer and polymer were systematically characterized using liquid chromatography-mass spectrometry (LC–MS) and nuclear magnetic resonance (NMR), which confirmed their molecular configurations. Performance studies revealed that ABPBIO not only possessed outstanding thermal stability, with 5% weight-loss temperatures ( T 5% ) of 551.6°C in air and 615.2°C in N 2 , and char yields of 44.1% and 76.6%, respectively, surpassing those of similar materials reported in the literature, but also exhibited good gas-phase water adsorption capabilities. Based on these superior properties, the polymer shows promising potential for specialized applications in fields such as firefighting and chemical protection.
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CRYSTAL GROWTH & DESIGN
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2026
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IF 3.6
Hanzi Zheng,Kaxi Yu,Dier Shi,Shuna Liu,Yifan Zhao,Jiyong Liu,Xiurong Hu
Salt formation proved to be the most effective solid-state form for insoluble drugs in terms of improving solubility, crystallinity, stability, and/or bioavailability. A salt form of a drug where two ions of the same type are associated with one drug molecule further improves solubility and overall drug performance. However, a systematic comparison of these forms for a given drug combination remains scarce. This is achieved by the drug having at least two sites that can ionize, allowing it to form ionic bonds with a counterion. Osimertinib (OSTN), characterized by poor solubility and bioavailability, is a highly selective kinase inhibitor approved by the FDA, which is indicated for treatment of locally advanced or metastatic nonsmall cell lung cancer. In the present study, a multicomponent system based on OSTN’s diprotic base was prepared and characterized by various methods. This system comprises mono- and disalts derived from three sulfonic acids: methanesulfonic acid, benzenesulfonic acid, and p-toluenesulfonic acid. Although the powder diffractions of OSTN mesylate (OSTN-MSA-A and OSTN-MSA-B) and OTSN tosilate (OSTN-TsOH) have been reported, and the crystal structure of OSTN-MSA-B was solved by using synchrotron X-ray powder diffraction data and optimized using density functional techniques, our study marks the inaugural report of their crystallographic structures. Three new solid forms (OSTN-BES, OSTN-2BES, and OSTN-2TsOH) were initially identified and subjected to a comprehensive characterization through thermal analysis, X-ray diffraction, X-ray photoelectron spectroscopy (XPS) techniques, etc. In addition, their hygroscopicity and solubility were determined and compared, combining with the respective molecular conformation, their inter- and intramolecular interactions, and packing arrangement. Notably, OSTN disalt exhibited superior dissolution performance when compared to that of monosalt. The comparative study offers valuable guidance for the development of salt screening for insoluble drugs with two sites that can ionize.
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EUROPEAN POLYMER JOURNAL
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2026
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IF 6.8
Yunhang Zhu,Yang Ke,Feiyan Lu,Hongna Jiang,Qingting Liu,Xudong Fu,Rong Zhang,Shengfei Hu,Gang Xiao,Feng Zhao,Xiao Li,Jun Yang
High-temperature proton exchange membranes (HT-PEMs) suffer from an unavoidable trade-off between proton conductivity and mechanical strength under wide-temperature and anhydrous environments. Herein, copolymerized DA-PBI/SPEEK composite membranes are fabricated via hydrogen-bond-driven interphase engineering. The sulfonic acid groups of SPEEK form intense acid-base pairs with imidazole and amino sites on DA-PBI, the synergistic effects of flexible chain segments and intermolecular hydrogen bonding significantly enhance polymer miscibility and construct a robust acid-base interaction network. Quantum chemical calculations and charge density difference (CDD) analysis confirm that the nitrogen active sites of DA-PBI anchor phosphoric acid via electronic rearrangement, which remarkably lowers the energy barrier for proton migration. The optimal membrane achieves a tensile strength of 130 MPa (3.25 times that of pristine SPEEK) and a peak power density of 0.536 W cm −2 (1.85 times that of pristine SPEEK) at 160 °C. This multi-scale strategy combining molecular chain tailoring, interfacial modulation, and electronic structure optimization resolves the conductivity-mechanical property dilemma of PBI-based membranes, offering a promising route to advanced anhydrous HT-PEMs.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Man Liang,Wei Wang,Minzhang Li,Beichi Luo,Qingjie Yang,Lu Guo,Kwun Nam Hui,Guangguo Ying,Fuming Chen
Escalating carbon dioxide (CO 2 ) emissions and widespread freshwater scarcity represent critical challenges to global environmental sustainability. This study addresses both issues simultaneously by coupling electrochemical CO 2 reduction (CO 2 RR) with seawater desalination using a novel N-SnPc/NRGO nanocomposite. This material was fabricated by anchoring tin-phthalocyanine nanostructures (N-SnPc) onto nitrogen-doped reduced graphene oxide (NRGO). The unique architecture enhances electrical conductivity and increases the exposure of active sites, optimizing electron transfer and reactant mass transport, thereby boosting CO 2 RR performance towards formate production. The optimized N-SnPc/NRGO composite (1:2 mass ratio) achieved a high formate Faradaic efficiency (FE formate ) of 86.0 % at −0.84 V vs. reversible hydrogen electrode (RHE), alongside excellent long-term operational stability. Density functional theory (DFT) calculations revealed that NRGO modification enhances the conductivity of SnPc and modulates the p -band center of the Sn N 4 sites, promoting CO 2 adsorption and rationalizing the elevated CO 2 RR activity. Furthermore, when integrated into an electrochemical desalination device, the N-SnPc/NRGO (1:2) cathode facilitated a rapid salt removal rate (SRR) of 778 μg cm −2 min −1 while maintaining an 83.3 % FE formate . Processing natural seawater, the device achieved freshwater standard with a total salt removal efficiency of 99.7 %. This work introduces a promising strategy for designing cost-effective, high-performance Sn-based CO 2 RR electrocatalysts and presents an innovative approach to tackling water resource challenges through integrated electrochemical systems.
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PubMed
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JOURNAL OF MOLECULAR STRUCTURE
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2025
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IF 4.7
Hanfei Xiang,Yonghe Zhang,Zhefeng Wang,Jie Sun,Zhengcheng Zhang,Zengrui Xing,Peng Zhang,Zhenghua Ju
A donor-acceptor1-acceptor2 (D-A1-A2) pyridine derivative (P263) was designed and synthesized. The theoretical calculations showed that the mixed character of the locally excited (LE) and intramolecular charge transfer (ICT) in the T n states could be beneficial to achieve high spin-orbit coupling (SOC) values, thereby promoting efficient intersystem crossing (ISC). The fluorescence emission spectra of P263 exhibited an obvious solvent-dependent emission behavior, which was attributed to the effective ICT through the introduction of dual acceptor units. In addition, the protonation/deprotonation processes of the nitrogen atoms in the pyridine units induced the alterations in the emission spectra, rendering P263 a fluorescent sensor for proton ( H + ) detection. Moreover, the pyridine units could form the hydrogen-bonding interactions with the poly(vinyl alcohol) (PVA) matrix, which was favorable for the suppression of the nonradiative decays and the stabilization of the triplet excitons. The obtained P263@PVA film through doping P263 into PVA showed room-temperature phosphorescence (RTP) properties with a long lifetime of 535 ms and the quantum yields of 3.62 %.
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Surfaces and Interfaces
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2025
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IF 6.3
Yibo Tang,Jiabing Chen,Xiaowei Zhu,Xiaojun Lu
Ethylene hydroesterification is an important carbonyl synthesis reaction that allows the production of corresponding esters from CO, alcohols, and olefins, achieving 100% atom efficiency. This study reports a Ru-based catalyst supported on a catalytic carrier material derived from flotation coal tailings, which demonstrates excellent catalytic performance in the methoxycarbonylation of ethylene to produce methyl propionate (MP). The molecular sieve prepared from the flotation coal tailings has a cubic structure, and the rich folds and grooves on its surface provide excellent anchoring sites for loading Ru nanoclusters. This structure allows better fixation of Ru metal clusters and promotes strong metal-support interactions. After loading 2% Ru, the catalyst exhibits the best catalytic performance. The acidic sites on the molecular sieve provide more protonic acid sites, which facilitate the formation of Ru-H species and enhance the dissociative activation of ethylene via a reverse hydrogen spillover mechanism. This leads to a significant increase in the generation rate of reaction intermediates, thereby improving the catalytic activity. The use of waste flotation coal to prepare molecular sieves achieves waste recycling, with a green and simple preparation process. Furthermore, the results of this study offer new insights for future research on olefin hydroesterification and hydroformylation, as well as other carbonyl synthesis reactions.
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Materials
·
2025
·Vol. 18
·期 12
·2691
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IF 3.2
Xinguo Li,Xiangjie Zhang,Gaolei Qin,Peng He,Yajuan Hao
Hydroformylation is one of the most widely applied homogeneous catalytic processes in the chemical industry, constituting the predominant manufacturing platform for aldehyde synthesis at commercial scales. Nevertheless, hydroformylation shares with traditional homogeneous catalysis the inherent limitation of difficult catalyst recovery and recycling. Developing heterogeneous catalysts for such reactions is thus critically needed. Herein, a stable nitrogen-rich covalent triazine framework (CTF) was synthesized via a mild Friedel–Crafts alkylation method and employed as a support for Rh single-atom catalysts (Rh/CTF-TPA). In the hydroformylation of 1-decene, the Rh/CTF-TPA catalyst exhibits an exceptional reaction efficiency (TOF > 1900 h−1), outperforming the homogeneous Rh(CO)2(acac). Experimental and characterization results revealed that the CTF support enhances catalytic performance through two key mechanisms: (1) strong enrichment of reactants within its special structure, and (2) efficient dispersion of Rh single-atom sites stabilized by abundant nitrogen coordination. This work demonstrates a rational design strategy for heterogeneous hydroformylation catalysts by leveraging nitrogen-rich porous frameworks to synergistically optimize metal anchoring and reactant enrichment, offering a promising alternative to conventional homogeneous systems.
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JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Tianqi Yang,Weiyi Jin,Yi Tang,Xiaofei Ye,Weiyu Zhang,Jie Li,Hong Li,Yiming Sun,Yicheng Dong,Xiangdong Zhang,Chenliang Gong
Advanced high-temperature proton exchange membranes (HT-PEMs) demand integrated broad-temperature adaptability and operational stability to fulfill the stringent requirements of industrial applications. The strategic construction of microphase-separate architectures within membrane emerges as a viable approach to simultaneously extend the operational temperature window and enhance mechanical-chemical stability HT-PEMs. This study developed poly( p -terphenyl imidazole) membranes incorporating acid-phobic fluorinated 3,3’-difluoro-1,1’-biphenyl (BP2F) units via superacid-catalyzed polyhydroxyalkylation. The membrane maintains enhanced proton conductivity and requires lower proton transport activation energy even when containing low PA doping level (ADL), revealing that proton transport mechanisms rely not merely on ADL, but crucially on fluorine-induced microphase separation and PA redistribution. The membrane containing 15 wt% BP2F demonstrated exceptional proton conductivity (145.11 mS cm -1 at 180 o C and 47.26 mS cm -1 at 80 o C) and fuel cell performance (1019 mW cm -2 peak power density at 180 o C and 310 mW cm -2 peak power density at 80 o C), while exhibiting remarkable stability under accelerated stress testing (4.5% power density decay after 200 cycles at 180 o C). This study successfully enhanced the formation of microphase-separated structures in polymers and improved fuel cell performance through the strategic incorporation of fluorinated acid-phobic units.
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WATER RESEARCH
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2026
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IF 12.8
Jianquan Peng,Siheng Zhao,Shengchao Zhao,Mingbin Chen,Kuo Chen,Q. Jason Niu
Abastract Thin film composite (TFC) membranes that simultaneously deliver high permeance and excellent selectivity are essential for advanced membrane-based separation processes. This study proposes a novel strategy for fabricating high-performance TFC membranes with enhanced microporosity and narrow pore size distribution via acid-assisted interfacial polymerization (AAIP) for water desalination. A rigid and contorted amine monomer is synthesized and successfully incorporated into polyamide membranes through AAIP. The inherent rigidity of the monomer contributes to a narrower pore size distribution of the polyamide film, while its contorted geometry disrupts dense chain packing, thereby promoting microporosity. Furthermore, by carefully tuning the hydrophobicity of acid additives, we show that acids with larger hydrophobic tails reduce interfacial tension and promote amine monomer enrichment at the water/hexane interface, This, in turn, enhances amine monomer supply at the interface, resulting in improved microporosity and significantly increased water permeance. The resulting TFC membrane achieves a high water permeance of 5.4 L m -2 h -1 bar -1 (270% of planar monomer-based membranes) with excellent NaCl rejection of 98.5%, outperforming most previously reported and commercially available TFC membranes. This work highlights the promising potential of AAIP in fabricating high-performance TFC membranes and paves the way for the future development of IP-based membranes in molecular sieving applications.
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