ACS Applied Polymer Materials
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2025
·
IF 4.7
Xida Zhang,Chunlei He,Zhongwei Chen,Tingting Chen,Zhiquan Chen,Lei Ni,Yuan Yu,Juncheng Jiang
A ubiquitous challenge exists in the pursuit of high-efficiency flame retardancy for flame retardants, which is the inability of these agents to effectively maintain the mechanical stability of epoxy resin (EP). To address this issue, a phosphate-imidazoline-boron ester flame retardant (PDDBS) was designed and synthesized. The hydroxyl groups within PDDBS were capable of participating in the curing reaction of EP. At a 1 wt % addition level, the Tg of EP/1PDDBS was increased to 148.2 °C. Mechanical property tests from bending and tension experiments indicated that the addition of PDDBS enhanced the mechanical performance of EP. When 5 wt % PDDBS was added, the tensile and flexural strength reached 69.9 and 123.5 MPa, respectively. Furthermore, PDDBS exhibited certain flame-retardant capabilities: compared with neat EP, the peak heat release rate, total heat release, and total smoke production of EP/5PDDBS were decreased by 48.6, 15.4, and 28.4%, respectively. Analysis of residual carbon revealed that thermal decomposition of boron-based groups triggers the formation of boron oxide, which facilitates the construction of a carbonaceous layer and thereby enhances the thermal stability of EP composites. Developing PDDBS through synthesis offers an approach to reconciling the compromise between flame-retardant capability and structural strength.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Xuehuan Xu,Chenxi Li,Bangyu Xiong,Yang Yi,Yongya Zhang,Pan Li,Jingwen Fu,Daosheng Liu,Rui Wang,Lijing Wang,Wei Wei
The efficient conversion of waste to renewable energy via photocatalysis is critically limited by sluggish carrier dynamics (separation and transfer), leading to severe charge recombination and diminished performance. Herein, we demonstrate a Co-N bond engineered photocatalyst that enables fast carrier extraction and transfer by anchoring Co 3 O 4 nanoparticles onto g-C 3 N 4 , addressing the intrinsic kinetic bottleneck in photocatalytic waste-to-energy systems. The experimental results demonstrated that the introduction of Co 3 O 4 nanoparticles enhanced the number of active sites and the solar light response range of g-C 3 N 4 . Moreover, the directional charge transfer driven by the Schottky barrier significantly increased the number of effective charges. As a result, the hybrid catalyst exhibits excellent bifunctional catalytic performance in synchronous hydrogen production (3863.2 μmol/h/g) and tetracycline (TC) degradation, which is 10 times higher than pure g-C 3 N 4 . This study provides theoretical and experimental references for designing multifunctional photocatalytic systems based on interface regulation and has reference significance for the development of environmental remediation and energy conversion synergistic technologies.
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DYES AND PIGMENTS
·
2026
·
IF 3.9
Wenlong Xing,Yin Zhu,Jiahao Wu,Shijia Li,Zhenyu Zhao,Jinsong Zhang,Shaowei Bo,Ji Zeng,Jiangling Peng
The rapid and accurate detection of adenosine 5′-triphosphate (ATP) is crucial for clinical diagnostics, bioanalysis, and food safety. This study presents two novel aggregation-induced emission (AIE)-active probes, BIP-PP-1 and BIP-PP-2 , derived from a new N-heterocyclic AIEgen core, benzo[4,5]imidazo[1,2- c ]pyrimidine (BIP). The optimized probe, BIP-PP-2 , functions as a high-performance ATP sensor with a large Stokes shift, high sensitivity (LOD = 0.85 μM, linear range 0 – 90 μM), and excellent selectivity over structurally similar anions such as ADP, AMP, CTP, TTP, and UTP, a feature seldom achieved in small-molecule ATP probes. This unique selectivity is attributed to the novel BIP core, where specific π-π stacking and hydrogen-bonding interactions with the adenine moiety of ATP provide a superior stereoelectronic match, driving precise recognition and AIE-based fluorescence enhancement via a synergistic combination of electrostatic and non-covalent forces. BIP-PP-2 was successfully applied in real-time ATP imaging within live bacterial cells and, notably, in the rapid visual detection of bacterial contamination in beverages using a portable 365 nm UV lamp, achieving a visual detection limit of 3.9 × 10 5 CFU mL −1 under ambient light. This work introduces the BIP scaffold as a promising platform for functional dye design and establishes BIP-PP-2 as a robust analytical tool for on-site bioanalysis and food safety monitoring. © 2001 Elsevier Science. All rights reserved.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 9
·118212
·
IF 6.3
Xinyu Wang,Ruipeng Wang,Jianli Jiang,Haining Meng,Haigang Hou,Jian Yang,Guiwu Liu,Guanjun Qiao
PbTe-based thermoelectric materials are promising for mid-temperature waste heat recovery, yet n-type PbTe underperforms its p-type counterpart. Herein, high-performance n-type PbTe is achieved through I/Ge co-doping and in-situ composite engineering with Sb 2 Te 3 prepared by melting combined spark plasma sintering. Sb 2 Te 3 alloying introduce in-situ formed Sb/Sb 2 Te 3 precipitates. Furthermore, iodine doping optimizes the carrier concentration to ∼3.4 × 10 19 cm –3 , boosting the room-temperature electrical conductivity to ∼1404 S cm −1 and yielding a high power factor of ∼17.4 μW cm −1 K −2 for the PbTe-Sb 2 Te 3 sample. Meanwhile, lattice thermal conductivity is synergistically suppressed to ∼0.37 W m –1 K –1 at 673 K through Ge-induced point defects/off-center anharmonicity and Sb/Sb 2 Te 3 precipitates. This synergistic strategy results in a peak ZT of ∼1.30 at 823 K and a high average ZT of ∼0.91 at 323–823 K. This work demonstrates that synergistic I/Ge co-doping and composite precipitation effectively enhance thermoelectric performance in n-type PbTe.
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Journal of Energy Storage
·
2026
·
IF 10.7
Chundong Geng,Xin Gao,Qian Li,Yanqiu Xie,Gang Liu,Haoze Wang,He Bai,Fan Jiang,Hongyan Yue
Although interlayer engineering strategies have demonstrated significant potential in enhancing the electrochemical performance of layered manganese vanadates, the role of intercalated crystal water in regulating charge storage behavior should be clarified. Herein, several manganese vanadates (MnV 2 O 6 ·nH 2 O) with different crystal water contents are fabricated, and the storage behaviors are investigated. When the content of crystal water is limited (n = 2), the interlayer crystal water can act as a “pillar” to enhance ion diffusion kinetics, optimize the interlayer charge distribution, and alleviate structural collapse during charge/discharge cycles. However, excessive water molecules (n = 4) can form metastable coordination configurations and induce localized structural damage during repeated charge/discharge processes. As a result, MnV 2 O 6 ·2H 2 O cathode material exhibits an optimal specific capacity (1318.2 C g −1 at 1 A g −1 ) and cycle stability (84.31% capacity retention after 10,000 cycles) better than that of MnV 2 O 6 (507.9 C g −1 at 1 A g −1 , capacity retention of 61.62%) and MnV 2 O 6 ·4H 2 O (591.3 C g −1 at 1 A g −1 , capacity retention of 67.64%). Furthermore, the hybrid supercapacitor assembled with MnV 2 O 6 ·2H 2 O cathode and activated carbon anode (MnV 2 O 6 ·2H 2 O//AC) demonstrates a superior energy density of 59.12 Wh kg −1 at 690.80 W kg −1 , with 87.03% of the original capacity remaining after 10,000 cycles.
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Nature Communications
·
2026
·
IF 15.7
Ya Zongyang,Li Mei,Fu Donglong,Zheng Yu,Wei Ruhan,Wang Hao,Zhang Kangning,Xu Dong,Zhang Zixuan,Zhang Xue,Yan Shen,Wang Hua,Zhang Shengbo,Gong Jinlong
Photocatalytic C−N coupling offers a promising approach for the sustainable production of amino acids, but the uncontrolled coupling pathway of reaction intermediates limits yield and selectivity. This paper describes a Pd−B diatomic catalyst that can selectively catalyze the photosynthesis of glycine via C−N coupling reaction between waste poly(ethylene terephthalate)-derived ethylene glycol and nitrate, achieving a glycine yield of 2.9 mmol g cat −1 h −1 with a selectivity of 92%. Mechanistic investigations reveal that ethylene glycol is photo-oxidized to glycolaldehyde at the hole-rich B site, while nitrate is photo-reduced to NH 4 + /NH 3 at the electron-rich Pd site. Subsequently, glycolaldehyde undergoes C−N coupling with NH 4 + /NH 3 , and further photo-oxidized to form glycine. The Pd−B diatomic site more effectively stabilizes the glycolaldehyde intermediate, resulting in a more favorable C−N coupling pathway than metal oxide and enhancing glycine selectivity. Thus, we show a catalytic system for selective glycine photosynthesis by precisely regulating the reaction pathways of key intermediates.
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PubMed
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Shuai Jiang,Yanxin Zhang,Qi Zhang,Yifeng Cao,Longgang Wang,Weifeng Lin
Hydration lubrication is the core mechanism of water-based lubrication, enabling low friction through biomimetic interfacial hydration layers. Zwitterionic materials, with their outstanding hydration capabilities have recently emerged as key choices for constructing superlubricant interface materials. In the study, inspired by the natural osmolyte trimethylamine N -oxide (TMAO), we designed and synthesized a novel class of N -oxide zwitterionic lubricants featuring a direct N⁺-O⁻ bond. Unlike conventional zwitterions such as sulfobetaine and carboxybetaine, these materials possess a smaller bond dipole and induce stronger water polarization, resulting in a robust hydration layer even under high-salinity conditions. The resulting lubricants exhibit excellent salinity tolerance and substrate adaptability, maintaining a low coefficient of friction (COF) across various surfaces. Together with their inherent biocompatibility and universal lubricating performance, these properties underscore the strong potential of N⁺-O⁻ zwitterions for biomedical and advanced interfacial applications.
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Functional Materials Letters
·
2019
·
IF 1.388
Lin Zhao,Yanzhao Xie,Qiuyu Lin,Rongze Zheng,Yong Diao
A series of composite catalysts of C, N and P co-doped TiO 2 were prepared by sol-gel method, using a biomass (soluble starch) dopant. The samples were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflectance spectroscopy (DRS), fourier transform infrared (FTIR) spectroscopy. The results show that TiO 2 is co-doped with C, N and P by one step. The resulting composite exhibited higher specific surface area, wider visible-light absorption band with respect to the pure TiO 2 . The sample calcined at 400 ∘ C for 2 h with a doping amount of 6 g soluble starch showed the best electrochemical performance. The C, N and P co-doped TiO 2 was also used for the degradation of methylene blue (MB) and degradation ratio was up to 98% in 80 min under visible light irradiation.
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ACS Nano
·
2017
·
IF 13.942
Jin Jia,Tanli Xiong,Lili Zhao,Fulei Wang,Hong Liu,Renzong Hu,Jian Zhou,Weijia Zhou,Shaowei Chen
Probing competent electrocatalysts for hydrogen evolution reaction (HER) of water splitting is one of the most hopeful approaches to confront the energy and environmental crisis. Herein, we highlight ultrathin N-doped Mo2C nanosheets (N-Mo2C NSs) in the role of greatly efficient platinum-free-based electrocatalysts for the HER. The transformation of crystal phase and structure between MoO2 nanosheets with a thickness of ∼1.1 nm and N-Mo2C NSs with a thickness of ∼1.0 nm is studied in detail. Structural analyses make clear that the surfaces of the N-Mo2C NSs are absolutely encompassed by apical Mo atoms, hence affording an ideal catalyst prototype to expose the role of Mo atoms for the duration of HER catalysis. Theoretical calculations demonstrate that the nanosheet structure, N doping, and particular crystalline phase of Mo2C produce more exposed Mo active sites, including Mo atoms on the C plane and doped N atoms. Through detailed electrochemical investigations, N-Mo2C NSs possess HER activity with an onset potential of −48.3 mV vs RHE, Tafel slope of 44.5 mV dec–1, and overpotential of 99 mV vs RHE at the cathodic current density of 10 mA cm–2 with excellent long-term stability. Lastly, the calcination temperature and dicyandiamide amount can obviously affect the phase transformation and surface structure of molybdenum carbide, resulting in an adjustable HER activity. This synthesis mechanism will facilitate the understanding and optimization of Mo-based electrocatalysts in the energy conversion field.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2015
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IF 2.752
Junhao Huang,Jiacheng Li,Yuhong Feng,Ke Li,Huiqiong Yan,Pengbo Gao,Ting Xiao,Chunxiu Wang
In this study, the aggregation of N-octyl-β- d -glucopyranoside (OGP) and cholesteryl grafted sodium alginate derivative (CSAD) in solutions was investigated by surface tension method, fluorescence spectroscopy, dynamic light scattering, and transmission electron microscopy. Results showed that cholesteryl of CSAD and OGP were adsorbed competitively to the gas–solution interface. Four different conformations of complexes were found with the increasing of OGP concentration (C). When C < critical aggregation concentration (CAC), the OGP stimulates CSAD association. When CAC < C < critical micelle concentration (CMC), the OGP was stimulated by hydrophobic interaction, then it compounded CSAD to form polymer–surfactant complexes and some pearl-chain structure complexes. When CMC < C < adsorbed saturation concentration (C 2 ), the quantity of pearl-chain structure complexes increases, they interact to form core–shell structure complexes, and several core–shell structure complexes formed short string-structures by association of CSAD molecule. When C > C 2 , adsorption amount of OGP to CSAD reached saturation, OGP molecules formed small single OGP micelles , while the string-structures were dissolved because the cholesteryl among the micelles were replaced by the single OGP micelles.
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International Journal of Electrochemical Science
·
2023
·Vol. 14
·期 6
·5820-5830
·
IF 1.5
Yao Liug,Xiaojing Liug,Junli Liu,Chaozhong Guo,Yanrong Li,Jin Zhang,Zhongbin Li
Ternary Fe-N-C catalysts are regarded as the most promising candidates for low-cost alternatives to the Pt-based materials for catalyzing the oxygen reduction reaction (ORR). In this paper, the Fe and N codoped carbon catalyst (Fe-Py@K-800) with the unique foam-like 3D structure has been fabricated by using the molecular sieve as a new solid-state template. The results of physical characterization indicate that Fe atoms are coordinated with nitrogen atoms to form the Fe-N ORR-active structure. In contrast with the commercial Pt/C catalyst, the Fe-Py@K-800 displays a comparable ORR electrocatalytic activity with an onset potential of ~1.1 V and a half-wave potential of ~0.88 V ( vs. RHE), however, the long-term stability of Fe-Py@K-800 is obviously better. These results show that iron-organic coordination in the pyrrole ring will play a role in the generation of nitrogen-rich active sites, which facilitates the enhancement of ORR activity in alkaline electrolyte.
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CHEMICAL PAPERS
·
2017
·Vol. 69
·期 4
·580-585
·
IF 1.258
Wei Song-Bo,Tang Bo,Peng Xin-Hua
4-Nitro- o -xylene was selectively oxidized to 2-methyl-4-nitrobenzoic acid using dilute nitric acid as the oxidizing agent under atmospheric pressure. The oxidation of 4-nitro- o -xylene was effectively promoted by an addition of radical initiators. Under reflux, 2-methyl-4-nitrobenzoic acid was afforded in high yield using nitric acid combined with N -hydroxyphthalimide, cobalt dichloride (CoCl 2 · 6H 2 O), manganese acetate (Mn(OAc) 2 · 4H 2 O) and phase transfer catalyst.
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危险品化学品经营许可证（带存储）