JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Linlin Wang,Yafei Guo,Wenhui Zhao,Pengfei Wang,Zonglin Liu,Ting-Feng Yi
A unique 3D hierarchical network consisting of 0D carbon dodecahedra and 1D carbon nanotubes is successfully constructed via in-situ growth. • Phosphorus doping serves as a versatile modulator to induce 1D morphology formation and optimize the electronic density of iron active centers. • The optimized N, P co-doped Fe-N-C catalyst exhibits an outstanding half-wave potential of 0.884 V in alkaline media. • The assembled zinc-air battery achieves a remarkable operational lifespan exceeding 1300 h with superior structural integrity. Developing highly efficient and durable non-precious metal electrocatalysts for oxygen reduction reaction (ORR) remains a critical challenge for the practical application of zinc-air batteries (ZABs). Herein, we successfully synthesized a robust N, P-codoped Fe-N-C catalyst featuring a unique 0D/1D intertwined architecture through a phosphorus-induced heteroatom-modulation strategy. By utilizing FePc-encapsulated ZIF-8 as a precursor, the in-situ growth of 1D carbon nanotubes from 0D carbon dodecahedrons was achieved, constructing a 3D hierarchical conductive network. Experimental and mechanistic analyses reveal that P-doping serves as the key morphology director. It not only induces the formation of structural-stable 1D nanotubes to enhance electron transfer but also modulates the electronic density of Fe centers to elevate electro-oxidation resistance. Consequently, the optimized catalyst exhibits a superior half-wave potential (E 1/2 ) of 0.884 V (vs. RHE) in alkaline media. Remarkably, the as-assembled ZAB achieves an exceptional stability of over 1300 h, demonstrating the superior structural integrity and durability of the 0D/1D network. This research offers a strategic design for engineering high-performance and stable Fe-N-C catalysts through synergistic 0D/1D architecture construction. Phosphorus-induced modulation facilitates the in-situ growth of 1D nanotubes from 0D dodecahedrons, constructing an integrated 0D/1D hierarchical Fe-N-C structure. This structural engineering optimizes the electronic environment of Fe sites for enhanced ORR kinetics (E 1/2 = 0.884 V) and endows practical zinc-air batteries with an outstanding stability exceeding 1300 h. Download: Download high-res image (283KB) Download: Download full-size image
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
·
IF 3.9
Junqing Ye,Gen Li,Fengzhang Ye,Wei Xie,Qun Chen
In this study, a non-noble bimetallic-supported metal oxide catalyst, CuxFe1/ZrO2 rich in oxygen vacancies, was synthesized via dry ball milling for the direct synthesis of N,N′-diphenylurea (DPU) from CO2 and aniline. The optimal Cu5Fe1/ZrO2 catalyst achieved 12.7% aniline conversion with near-100% DPU selectivity (99.9%). Comprehensive characterizations revealed that abundant oxygen vacancies enhance metal–support interaction and serve as primary sites for CO2 adsorption and activation. Combined temperature-programmed desorption of NH3 and CO2 (CO2/NH3-TPD) and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) studies elucidated a synergistic acid–base catalytic mechanism. Lewis basic Cu/Fe sites activate CO2, while Lewis acidic Zr4+ sites adsorb and activate aniline, promoting the formation of the key C6H5NH–(CO) intermediate. The catalyst maintained high performance over five cycles, demonstrating excellent stability. This work offers an effective strategy for designing robust non-noble catalysts for CO2 valorization into value-added chemicals.
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RSC Advances
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2026
·Vol. 16
·期 21
·19213-19224
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IF 6.1
Jingdong Nong,Zhonghua Sun,Weiyou Zhou,Zhong Wu,Junfeng Qian,Qun Chen,Mingyang He
A series of Cu-modified Ni–Al2O3 catalysts with various Cu/Ni ratios (xCu/Ni–Al2O3) were prepared, and systematically characterized using BET, XRD, SEM, H2-TPR, H2-TPD, TG, and XPS. The catalyst exhibited excellent catalytic performance in the selective hydrogenation of N,N-dimethylaniline to N,N-dimethylcyclohexylamine in a continuous fixed-bed reactor. When the Cu/Ni molar ratio was 0.1, the active components were highly dispersed on the Al2O3 support, which possessed a high specific surface area and well-developed porous structure. Furthermore, the catalyst demonstrated strong hydrogen desorption capacity and enhanced thermal stability. Synergistic electronic interactions between Ni and Cu improved the adsorption and activation of both reactant and H2 molecules. The incorporation of Cu near the Ni active sites effectively modulated the selectivity toward the desired product N,N-dimethylcyclohexylamine. Under the optimal reaction conditions: H2 pressure of 5 MPa, reaction temperature of 130 °C, liquid hourly space velocity 0.1 h−1 and hydrogen-amine volume ratio of 5500 : 1, the 0.1Cu/Ni–Al2O3 catalyst achieved superior performance, with a N,N-dimethylaniline conversion rate of 99.5% and a selectivity for N,N-dimethylcyclohexylamine of 97.6%.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Shuai Wang,Yuqi Chen,Shuyan Zheng,Yanan Yuan,Kexin Du,Min Cui,Yue Wu,Ping Li,Wei Hu,Jingui Wang,Yingshu Guo,Zexing Wu,Yanli Zhao
The incorporation of sp-hybridized nitrogen arisen from graphdiyne (GDY) into the catalyst structure significantly improves the electrocatalytic efficiency of zinc–air batteries by modulating the electronic properties of the active sites, thereby accelerating reaction kinetics and enhancing conductivity. This work highlights the efficacy of the Co–N-GDY catalyst, where sp-N moieties in GDY serving as anchoring centers for cobalt species, which demonstrates exceptional performance in the oxygen reduction reaction, achieving a half-wave potential of 0.85 V, along with high oxygen evolution reaction performance that surpasses that of commercial Pt/C + IrO2-based batteries. The Co–N-GDY catalyst also exhibits commendable cycling stability with minimal fluctuation in voltage difference, indicating its suitability for practical applications in advanced energy storage systems. These findings underscore the importance of developing cost-effective and durable M–N–C catalysts to enhance the commercial viability and sustainability of zinc–air battery technology.
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POLYMER
·
2025
·
IF 4.5
Huiling Huang,Shengqi Cui,Xiaoqing Song,Zhonglin Luo,Biaobing Wang
It is still a great challenge to achieve flame retardant epoxy resin (EP) without sacrificing its transparency and mechanical properties. In the present work, A P/N/S containing sulfonamide compound (DPPBSA) was synthesized and adopted to improve the fire safety of transparent epoxy resin. With the incorporation of 5 wt% DPPBSA, the EP composite presented UL-94 V-0 rating and 35.4% of LOI value, its peak of heat release rate and total heat release were also reduced by 51.0% and 40.8% as compared with the pure EP, respectively. The improved flame retardancy was attributed to the comprehensive flame retardant effect of the P, N, and S elements. In the condensed phase, much continuous and denser char layers with greater graphitization degree were formed during the combustion. In the gas phase, the pyrolysis of the DPPBSA released dilution gases and P-containing free radical scavengers. Moreover, the EP composite containing 5 wt% DPPBSA displayed almost comparable tensile strength and transparency with the pure EP.
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Polymer Chemistry
·
2018
·Vol. 9
·期 13
·1674-1683
·
IF 4.927
Liguo Xu,Fan Zhou,Min Liao,Rongrong Hu,Ben Zhong Tang
The development of a new polymerization methodology affords polymer materials with new structures and functionalities. Multicomponent polymerizations (MCPs) as a facile tool for preparing multifunctional polymers with complicated structures have attracted increasing attention from polymer scientists, owing to their high efficiency, high atom economy, simple procedure, structural diversity, and environmental benefit. In this work, a series of efficient one-pot multicomponent polymerizations of diynes, disulfonyl azides, and N-protected isatins are developed to afford oxindole-containing poly(N-acylsulfonamide)s with advanced properties. After optimization of the polymerization conditions, the MCP can proceed smoothly at room temperature or 30 °C in dichloromethane/t-BuOH with CuI as the catalyst and LiOH as the base, generating poly(N-acylsulfonamide)s with high molecular weights of up to 30 600 g mol−1 in excellent yields of up to 98%. This MCP enjoys general applicability of a series of electron-rich or electron-deficient alkynes and alkyl group or aromatic group-substituted isatins, generating six poly(N-acylsulfonamide)s from different combination of monomers, and nitrogen gas as the only byproduct, demonstrating high atom economy and environmental benefit. The obtained poly(N-acylsulfonamide)s can be dissolved in alcohol or alcohol/water mixtures, but cannot be dissolved in THF or dichloromethane, which show opposite solubility after the polymers are acidified with HCl, indicating reversibly tunable hydrophilicity of the polymers. Furthermore, water can participate in the MCP as the fourth component when the MCP is conducted in DMF with CuI as the catalyst and Na2CO3 as the base, generating random copolymers consisting of 3-alkenyloxindole moieties and two chiral center-containing 3-hydroxyindole moieties in the backbone. Some of the oxindole-containing poly(N-acylsulfonamide)s exhibit yellow to red emission in their solid state. These MCPs provide an efficient approach for the synthesis of functional polymers with unique structures, which directly build the oxindole and N-acylsulfonamide moieties in situ, demonstrating high synthetic efficiency.
研究领域:
材料科学
·
高分子化学
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PLoS One
·
2014
·Vol. 9
·期 7
·e102539
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IF 3.534
Caili Dai,Zhihu Yan,Qing You,Mingyong Du,Mingwei Zhao
Through the descriptive and rheological characterization of worm-like micelles formed by N -hexadecyl- N -methylpyrrolidinium bromide and sodium laurate, the formation and properties of the worm-like micelles were affected by the concentrations of sodium laurate and temperature. Additionally, cryogenic transmission electron microscopy images further validated the formation of worm-like micelles.
研究领域:
胶体与界面科学
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软物质物理
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表面活性剂化学
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Desalination and Water Treatment
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2024
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IF 1
Yunfan Lu,Ruibin Wang,Guoping Wang,Nian Chen
To achieve rapid detection for metronidazole (MNZ), a mesoporous nickel-based metal–organic framework (Ni-MOF), which had sub-micron-assemblies of layered flakes and abundant carboxyl groups, was synthesized in a particular solvent containing water with a facile one-step hydrothermal method. Using Ni-MOF/multi-walled carbon nanotubes as the sensor electrode, cyclic voltammetry and differential pulse voltammetry were investigated in MNZ solution (containing 0.1 M PBS). The current response linearly varied with MNZ’s concentration in the range of 5–100 μM. A relatively low detection limit of 25 nM was obtained, which outperformed many electrochemical platforms for MNZ reported in literatures. Moreover, further investigations indicated this system was endowed with good anti-interference ability repeatability, and long-term stability. The present work was promising to pave the way for the quantitation of MNZ in biomedical and healthcare applications.
研究领域:
电化学
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传感器与生物传感器
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环境与生物医学分析
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材料科学
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分析化学
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2023
·Vol. 24
·期 2
·1274
·
IF 5.6
Yuanhang Zhao,Hong Zhang,Lihua Hong,Xinying Zou,Jiazhuo Song,Rong Han,Jiawen Chen,Yiyan Yu,Xin Liu,Hong Zhao,Zhimin Zhang
Dental caries, particularly secondary caries, which is the main contributor to dental repair failure, has been the subject of extensive research due to its biofilm-mediated, sugar-driven, multifactorial, and dynamic characteristics. The clinical utility of restorations is improved by cleaning bacteria nearby and remineralizing marginal crevices. In this study, a novel multifunctional dental resin composite (DRC) composed of Sr-N-co-doped titanium dioxide (Sr-N-TiO2) nanoparticles and nano-hydroxyapatite (n-HA) reinforcing fillers with improved antibacterial and mineralization properties is proposed. The experimental results showed that the anatase-phase Sr-N-TiO2nanoparticles were synthesized successfully. After this, the curing depth (CD) of the DRC was measured from 4.36 ± 0.18 mm to 5.10 ± 0.19 mm, which met the clinical treatment needs. The maximum antibacterial rate againstStreptococcus mutans(S. mutans) was 98.96%, showing significant inhibition effects (p< 0.0001), which was experimentally verified to be derived from reactive oxygen species (ROS). Meanwhile, the resin exhibited excellent self-remineralization behavior in an SBF solution, and the molar ratio of Ca/P was close to that of HA. Moreover, the relative growth rate (RGR) of mouse fibroblast L929 indicated a high biocompatibility, with the cytotoxicity level being 0 or I. Therefore, our research provides a suitable approach for improving the antibacterial and mineralization properties of DRCs.Keywords:dental resin composite;dental caries;secondary caries;titanium dioxide;antibacterial property;remineralization
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INTERNATIONAL JOURNAL OF THERMOPHYSICS
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2023
·Vol. 44
·期 4
·1-25
·
IF 2.2
Liang Ximei,Yang Jian,Meng Xianyang,Wu Jiangtao
A vibrating-wire apparatus was used to measure liquid density and viscosity simultaneously under high-temperature conditions. Densities and viscosities were measured along 11 isotherms at temperatures from (298.15 to 548.15) K and pressures up to 10 MPa for n -dodecane, and over a temperature range of (303.15 to 548.15) K and at equilibrium pressures up to about 6 MPa for carbon dioxide + n -dodecane. The estimated combined expanded uncertainties are 0.24 % for density and 2.2 % for viscosity with a confidence level of 0.95 ( k = 2). In addition, experimental density and viscosity data were correlated with the modified Tait equation and Tait–Andrade equation, respectively, and comparisons with literature data were made. With regard to n -dodecane, the equations present both literature data and our experimental results with deviations almost within 0.2 % for density, and 3.0 % for viscosity. For simplicity, the experimental data of carbon dioxide + n -dodecane were correlated using these two Tait-like equations directly without considering the mole fraction of CO 2 . Both correlations describe our measured data of carbon dioxide + n -dodecane almost within 0.2 % for density and 1 % for viscosity. Graphical Abstract
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Shengnan Lu,Yonghou Xiao,Qidong Zhao,Wenkai Zhao,Gaohong He
Deep desulfurization from fuel has gradually become a research hotspot with enhancing requirements of environmental protection. CPO-27-Ni was considered as one of promising adsorbents towards adsorption desulfurization by virtue of its prodigious high pore volume and high specific surface area. However, the dominant microporous channels in traditional CPO-27-Ni hinder the diffusion of thiophene sulfide and its derivatives with relatively large molecular size, which limits its desulfurization efficiency. Herein, we proposed a strategy to reasonably construct defective CPO-27-Ni with micro-mesoporous structure using N , N -dimethyloctadecylamine (DMA18) as a template, aim at improving the diffusion efficiency by introducing meso -pores. Different amounts of DMA18 were introduced to synthesize defective CPO-27-Ni (DMA18-C- X ) by solvothermal method, and DMA18-C-0.5 (the mole ratio of added DMA18 to Ni 2+ was 0.5) exhibited a satisfactory desulfurization performance. The dynamic breakthrough adsorption capacities of dibenzothiophene, benzothiophene and thiophene over the DMA18-C-0.5 were remarkably promoted, which were as high 3.79, 6.45 and 9.29 times as the traditional CPO-27-Ni, respectively. The crystal structure of CPO-27-Ni was not altered after adding template agent DMA18, while a uniform distribution of mesopores appeared. The largest mesopore attained a size of 2.8 nm, which effectively promoted the full exposure of more unsaturated Ni 2+ active sites and enhanced the interaction between Ni 2+ active sites and sulfides, resulting in strengthened adsorption desulfurization performance. This method of introducing proper defects to construct mesopores in MOFs provides some useful references for preparing high-efficiency desulfurization adsorbents.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Qian Zhang,Si Chen,Zhi Huang,Yanying Liu,Jun-ming Hong
Nitrogen atom doping can effectively improve the electrocatalytic performance of graphene materials, and different nitrogen species play various roles. At present, high calcination temperature is commonly used to promote the production of graphitic N. To realize the oriented low-temperature doping of nitrogen atoms in graphene structure, we used O 3 -annealing method in this study to successfully prepare high-content graphitic N doped graphene oxide at 200 °C. Characterization results revealed that O 3 -annealing method can effectively promote the doping of N and O atoms. In addition, O 3 -annealing creating large amount defects for graphene, which directionally promoted the formation of graphitic N (reach 96.82%), which positively affected the improvement of material electrocatalytic properties. The results of bisphenol A (BPA) electrocatalytic degradation by O 3 -5 min-60 °C NGO showed that the degradation efficiency of BPA can reach 100% in 50 min under optimal conditions. The main active substances, namely O 2 − and 1 O 2 were probably generated from the edge oxygen functional groups (O-C=O and C=O) of the materials. BPA underwent a series of reactions, and was finally mineralized to CO 2 and H 2 O. This study provides a new strategy for the directional preparation of high content graphitic N doped graphene oxide for practical application.
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