ACS Applied Nano Materials
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2024
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IF 5.3
Xiaoqing Ma,Wenxi Zhao,Kang Lu,Chenke Zhang,Chengsong Yuan,Kang-lai Tang
Considering the destructive effect of excess residues of nitrite (NO2–) and hydrogen peroxide (H2O2) in food, herein, we introduce a unique synthetic strategy to design and construct high-performance sensing heterostructure materials [spindle-like Fe3O4/NiO@N-doped carbon (Fe3O4/NiO@N–C)] using Fe-based metal–organic frameworks as self-sacrifice template and further evaluate its quantitative capabilities for NO2– and H2O2 determination. Notably, the well-designed three-dimensional hierarchical hollow Fe3O4/NiO@N–C nanocomposites integrate the significant merits of hollow heterointerface structure and suitable electrocatalytic properties of different nanomaterials, which prompt the exposure of electroactive sites, the acceleration of electron/ion transfer rate, as well as the prolongation of structural robustness when unitized as electrocatalysts for NO2– oxidation and H2O2 reduction. Accordingly, it achieved remarkable sensitivity (1040.3 ± 0.0078 and 615.7 μA mM–1 cm–2 ± 0.0056) and low limit of detection (LOD) (21 and 129 nM) at desirable working potential (0.85 and −0.45 V); meanwhile, their selectivity, durability, and repeatability are also deserved to be declaimed. More importantly, this realizes successful recovery analysis in pickled mustard with high reliability and excellent applicability. Such significative research could provide instructive advice for the reasonable design of other heterostructured metal oxide and further highlight their untapped potential in food analysis, as well as human health and ecosystems.
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ELECTROCHIMICA ACTA
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2024
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IF 5.5
Heyang Sun,Siyi Hu,Tao Liao,Yang Li,Xiaobin Fan,Wenchao Peng
Single-atom catalysts (SACs) have exhibited great potential for CO 2 electroreduction (CO 2 RR), but designing highly active and cost-effective SACs remains a challenge. In this study, a pyrolysis strategy with space-limiting materials as the precursors is developed to synthesize a highly active Ni-SAs/NC catalyst, and an atomic Ni loading of 2.16 wt% is achieved. The coordination style of Ni atoms is determined to be Ni-N 3 by XAS. During the CO 2 RR test, a CO Faradaic efficiency of 98.21 % at -0.8 V vs. RHE can be achieved with a turnover frequency of 2378 h -1 . A long-term stability can also be obtained with negligible deactivation in 24 h, surpassing most of previously reported non-noble metal catalysts. In addition, a novel dual-function reaction system was fabricated to integrate CO 2 RR with electrochemical oxidation processes (EAOPs) for pollutants degradation. With δ-MnO 2 /NF as the anode, 100 % of 40 ppm RhB can be degraded within 30 min in the range of -0.6 V ∼ -1.0 V. This system can thus enable the reduction of CO 2 to CO and degradation of pollutants in the anodic cell simultaneously. The introduction of EAOPs as the anodic reaction provides a more cost-effective method for electrochemical CO 2 reduction.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xin Wang,Xiaoling Ye,Bountheva Louangsouphom,Wenbin Qu,Bingxu Zhang,Huimei Liu
To address the critical limitations of TiO 2 photocatalysts, including insufficient visible-light response and rapid carrier recombination, this study developed a Gd-N co-doped hierarchical porous TiO 2 -macroporous resin (Gd/N/TiO 2 -MAR) composite via a sol-gel hydrothermal method. Multi-scale characterizations (XRD, XPS, BET) revealed that Gd 3 ⁺ doping modulates the band structure and surface properties through 4f-2p orbital hybridization, extending the light response range while suppressing carrier recombination via electron trapping. The hierarchical porous architecture and interfacial synergy significantly enhanced the adsorption-photocatalytic degradation efficiency. Under visible light, the composite exhibited a 1.6-fold higher degradation rate constant for Rhodamine B compared to single N-doped systems, alongside stable performance across a broad pH range (2−12) and under coexisting ion interference. Radical trapping and adsorption-photodegradation kinetic analyses elucidated the cooperative mechanism of interfacial charge transfer and reactive species generation. This work provides new structural design principles for developing efficient multifunctional materials for environmental remediation.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yuxiao Hu,Kai Zhang,Jiayin Shang,Qiguan Wang,Jiale Chen,Hong Deng,Yuxin Cui,Sumin Wang
Aqueous zinc-ion hybrid capacitors (ZIHCs) are an ideal candidate for energy storage resulted from their low cost and high safety. Nonetheless, their wide applications have been hindered by the sluggish migration kinetics of Zn 2+ , low activity and low structural stability of cathodes during prolonged cycles. Herein, we report a supermolecular route by using two small molecules (melamine and cyanuric acid) inhaled in the interlayered space of expanded graphite (EG) flakes, where they are self-assembled into N-containing supermolecules. After calcination at high temperature, the supermolecules sandwiched in EG are converted to N-containing carbon spherical nanoparticles (NCSN). The insertion of NCSNs enlarges interlayered distance and the nitrogen and oxygen groups on NCSN enhance Zn 2+ adsorption, which boosts the transfer dynamics of zinc ions. Meanwhile, the in-situ formed NCSNs enhance the specific surface area of EG. Thus the fabricated ZIHCs employing the NCSN inserted EG (NCSN@EG) as the cathode deliver a high specific capacity of 355.6 F g −1 with the energy density of 142.7 Wh kg −1 and power density high as 170.2 W kg −1 in the voltage range of 0–1.7 V. In addition, the in-situ formed NCSNs strengthen the stacked two-dimensional structure of EG as bridges, and after 30,000 cycles, the capacity retention rate is as high as 87.2 %.
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WEAR
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2024
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IF 5.3
Zhihui Zhang,Jianxin Deng,Yang Lu,Jiaxing Wu,Ran Wang,Yichen Bao
In this paper, the electrojet mask in-situ forming technology was used to prepare (CF x ) n /CaF 2 -ZrO 2 /TiO 2 composite films with different ZrO 2 /TiO 2 texture distributions, to improve the adhesion properties and tribological performance of (CF x ) n /CaF 2 lubricant films. The microstructure, mechanical properties, and reciprocating wear characteristics between the composite films and 304 stainless steel counterparts were studied. The results showed that the textured hard film significantly improved the adhesion strength of the soft film and the tribological properties of the composite film. The composite film sample B had the lowest friction coefficient (∼0.100) and a lower film wear rate of ∼2.85 × 10 −7 mm 3 N −1 mm −1 , and also showed good self-lubricating properties in the high-temperature wear process. Sample C had a lower friction coefficient of ∼0.107 and the lowest film wear rate of ∼2.75 × 10 −7 mm 3 N −1 mm −1 . Compared with untextured composite film sample DC, sample B showed a 21.3 % reduction in friction coefficient, while sample C showed a 54.8 % decrease in film wear rate. This was because the surface texturing treatment of hard films enhanced the storage and flow of lubricant particles, and maintained a stable self-lubricating film during reciprocating wear. Moreover, (CF x ) n and CaF 2 have a synergistic effect in a wide temperature range of 25 °C–600 °C.
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ChemSusChem
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2024
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IF 7.5
Dong Li,Kaixuan Wang,Ying Chen,Renyi Li,Jiahong Tang,Yizhou Zhao,Wei Guo,Qi Chen,Yujing Li
Graphical A 0D/1D CPB@TCN heterojunction photocatalyst for CO 2 reduction is synthesized by immobilizing CsPbBr 3 (CPB) quantum dots on one-dimensional porous tubular g-C 3 N 4 (TCN). The strong Pb−N chemical bonding between CPB quantum dots and TCN provides a fast charge transfer channel for the CPB@TCN, which promotes the efficient separation and transfer of photogenerated carriers, resulting in excellent photocatalytic activity. Halide perovskite CsPbBr 3 (CPB) quantum dots (QDs) are considered as a promising candidate for solar-driven CO 2 conversion for their unique optoelectronic properties and suitable band structures. However, the CO 2 conversion efficiency of pristine CsPbBr 3 quantum dots is severely limited due to their rapid electron-hole pair recombination and insufficient active sites. In this study, by immobilizing CPB QDs onto one-dimensional (1D) porous tubular g-C 3 N 4 (TCN), an effective 0D/1D CPB@TCN heterojunction photocatalyst for CO 2 reduction is fabricated. Density functional theory (DFT) calculations combined with experimental studies demonstrate that CPB QDs are uniformly anchored on the surface of TCN through Pb−N chemical bonding, resulting in efficient separation and transfer of photogenerated carriers in CPB@TCN photocatalysts. The resultant CPB@TCN photocatalysts exhibit significantly enhanced photocatalytic activity for CO 2 reduction with the highest conversion rate of 22.62 μmol g −1 h −1 , which is 5.33-times higher than that of pristine CPB QDs. This work unveils the interfacial bonding mechanism of CPB@TCN heterojunction through Pb−N chemical bond, which provides new insights for the development perovskite-based heterojunction photocatalysts.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Yingfeng Wang,Kaizhun Li,Wenjing Xue,Huang Hu,Ming Huang,Maoli Yin
Environmental contamination can cause serious problems in water cycling systems. In this study, mesoporous composite-supported N-halamines (MCSNs) were synthesized and characterized, where the surface area retention rate of the MCSNs was over 70 % higher than MCM-41. The reaction between organic N-halamines and formaldehyde was examined in aqueous phase. The monomeric N-halamines (MCDMH) rapidly reacted with formaldehyde (10 ppm, 10 mL), and finished completely within 10 min. The MCSNs only reacted with formaldehyde in the high molar ratio (Cl + to formaldehyde, 40:1) and alkaline conditions (pH higher than 10), and approximately 60 % of formaldehyde can be degraded within 10 min. The reaction kinetics were studied and the kinetic parameters were investigated. The MCSNs were highly effective against S. aureus (7.94 logs) and E. coli O157:H7 (8.0 logs) with 1 min of contact time, demonstrating impressive antibacterial properties in aqueous conditions. As a type of antibacterial material, MCSNs introduce a new direction for the application of N-halamine-based materials in formaldehyde decontamination , indicating their potential to be utilized as novel water treatment materials.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Mengyang Li,Feng Cao,Jie Gao,Guozheng Lv,Na Du,Jiayi Rong,Chongyuan Ruan,Gaowu Qin
Selective reduction of aromatic nitro compounds to functionalized anilines remains a formidable challenge due to the competitive reducible functional groups. High-entropy alloys (HEAs) with multiple elements in near-equiatomic proportions hold great promise given their exceptional physicochemical properties. Herein, we developed nitrogen-doped carbon nanofiber-encapsulated HEA nanoparticles (FeCoNiCrCu@N-CNFs) for efficient nitrobenzene hydrogenation to aniline. The FeCoNiCrCu@N-CNFs catalyst demonstrated exceptional activity with 99 % aniline yield at 60℃, outperforming the FeCoNi@N-CNFs counterpart by a factor of 6.6. The HEA-NC heterojunction was constructed on the surface of the catalyst given the intimate contact between the N-doped carbon layer and the alloy particles. Density functional theory (DFT) calculations revealed that the elevated d‐band center of the HEA, induced by carbon interaction, enhances the intermediates adsorption. This synergistic interplay between HEA and nitrogen-doped carbon provides a novel strategy for designing selective hydrogenation catalysts.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Jundong Yang,Dayu Liang,Xiang Li,Yajun Gao,Wenzhi Wang,Zhimin Lu,Jianlei Qi
Epoxy resin is a widely used thermosetting resin, but its application is limited due to its high brittleness and poor toughness after curing. In this study, we used repolymerized epoxy resin as the matrix and added carboxyl-terminated nitrile rubber (CTBN) and nano-cerium dioxide (n-CeO 2 ) to improve its impact strength without compromising its thermal properties. The test results show that with 15 wt.% CTBN, the tensile strength of the cured product is 60.59 MPa, the flexural strength is 132 MPa, and the impact strength is 22 KJ/m 2 , which are 206%, 200%, and 424% higher than those of pure epoxy resin, respectively. To further enhance the toughening effect, we introduced n-CeO 2 on the basis of 15 wt.% CTBN. The study found that with increasing n-CeO 2 content, the impact strength first increased and then decreased. When the n-CeO 2 content is 2 wt.%, the impact strength of the resin reaches 29.3 KJ/m 2 , which is 32% higher than that of CTBN. Additionally, thermogravimetric analysis (TGA) shows that the addition of n-CeO 2 significantly improves the thermal stability of CTBN/EP composites. Scanning electron microscopy (SEM) analysis reveals that CTBN cavitation occurs in the resin; n-CeO 2 plays a crucial role in particle debonding and crack pinning.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yu Han,Jun Li,Shuhuan Hao,Wan-Zhen Fo,Liwen Cao,Mengjiao Li,Yanan Liu,Jianhua Zhang
Photonic synaptic transistors, designed to emulate the multispectral light detection of retinal neurons, play a pivotal role in advancing artificial vision systems capable of full-color image recognition. However, their limited sensitivity to weak and multispectral light significantly hampers their application in full-color image capture and recognition. In this work, a p-i-n structured synaptic transistor is introduced that improves weak light sensitivity and enhances synaptic performance by addressing interface issues. By integrating P3HT/LiF/InZnGdO nanofibers as p-i-n structure, the spectral response is successfully broadened from visible to near-UV region, achieving sensitivity to light intensities as low as 0.05 mW cm −2 . The device exhibits remarkable PPF characteristics across the wavelength range of 395–633 nm, with the PPF index showing a maximum increase of 84% compared to the single InZnGdO nanofiber device. Additionally, multiple neural networks are constructed with data from the synaptic transistor array driven by wavelength-tunable synaptic plasticity to validate the device's feasibility in various application scenarios. The proposed device achieved a recognition accuracy of up to 95.26% for high-precision full-color images based on the public CIFAR-10 dataset. This p-i-n structure offers a novel pathway to enhance the synaptic performance of metal oxide-based synaptic transistors, advancing the development of next-generation artificial vision.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Wen Zhang,Guang-Rui Xu,Jiayi Li,Tiantian Sun,Pengkai He,Zexing Wu,Yang Zhang,Yongming Chai,Lei Wang
Pd-based dual-metal site catalysts are active for the electrochemical water splitting for hydrogen production, while the slow hydrogen-binding ability and sluggish hydrolysis-dissociation kinetics of Pd-based catalysts limit their practical application. Assisting with the Gel-sol method, a complexation-gel strategy is proposed to synthesize ordered PdFe 3 N transition metal nitrides on porous carbons (PdFe 3 N TMNs/C) with the long-range ordered atomic arrangement, which accelerates water activation and dissociation. Moreover, interstitial N atoms in PdFe 3 N TMNs/C induce charge dilution and redistribution at the dual-metal site, resulting in the optimization of the d-band centers and enhancing the bonding strength, which is efficient and durable for the hydrogen evolution reaction (HER). As a result, the prepared coating achieves overpotentials of only 45 mV for the HER at 10 mA cm −2 in alkaline seawater electrolytes and exhibits excellent anion exchange membrane (AEM) performance and operates stably at a current density of 500 mA cm −2 at 1.76 V for 100 h. This work presents a new perspective for synthesizing TMNs nanocrystals and promotes their application in bifunctional electrocatalysts.
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GREEN CHEMISTRY
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2025
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IF 9.2
Mengran Lou,Ruiying Wang,Luxiang Wang,Yang Wang,Mei Wu,Shengjiao Wen,Xia Kong,Taotao Lv,Bo Ma
Hydrogen has emerged as a promising clean energy source, driving extensive research into efficient electrocatalysts for the hydrogen evolution reaction (HER). This work reports the synthesis of a self-supported Co₂P/nitrogen-doped coal-based carbon fiber catalyst (Co₂P/N-C-CFs(S-ZIF-67)) with cobalt (Co) vacancies via pyrolysis of a nanoscale metal-organic framework (NMOF) precursor. Compared to conventional ZIF-67, NMOF of S-ZIF-67 (40 nm) derives smaller Co2P (7.3 nm), simultaneously generating hierarchical porosity with increased specific surface area. More importantly, the pyrolysis of S-ZIF-67 generates Co vacancies that optimize the electronic structure and increase the active site density of catalyst. Density functional theory (DFT) calculations confirm that these Co vacancies lower the d-band center and promote electron transfer within the catalyst. Furthermore, the N-C-CFs as supporter provides both structural flexibility and tunable hydrogen adsorption Gibbs free energy (ΔGH*). Consequently, Co₂P/N-C-CFs(ZIF-67) exhibits exceptional HER performance in 0.5 M H₂SO₄, requiring only 66 mV overpotential to reach 10 mA cm⁻² current density, and demonstrates remarkable stability for 120 h at 20 mA cm⁻². Notably, it surpasses both Co₂P/N-C-CFs(ZIF-67) and commercial 20% Pt/C under high current densities. This study establishes an effective strategy for designing advanced HER catalysts through precise control of NMOF size and vacancy engineering.
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