DIAMOND AND RELATED MATERIALS
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2026
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IF 5.2
Huanqing Pei,Shi Liu,Yingying He,Yulai Zhao,Yuxuan Chen,Tianzhou Ye,Linxi Hou
In this work, we developed a novel strategy to fabricate core-shell structured nitrogen-doped carbon nanotube/alginate@polyaniline (NCNT/Alg@PANI) composite fibers. First, nitrogen-doped carbon nanotubes (NCNTs) were dispersed in sodium alginate (SA) solution, and the resulting mixture was processed into wrinkled NCNT/Alg fibers via wet-spinning. Subsequently, polyaniline (PANI) was in situ polymerized on the fiber surface, which can significantly enhance the electrochemical performance of the fibers. By tuning the PANI loading, the morphology and specific capacitance of the NCNT/Alg@PANI fibers were optimized. The specific capacitance initially increases and then decreases as the amount of aniline used is raised from 0.2 mL to 0.5 mL. An optimal specific capacitance of 1661.7 mF cm −2 (221.6 F cm −3 ) was achieved in 1 M H 2 SO 4 electrolyte. The electrode exhibited excellent rate capability and cycling stability, retaining 73.7% of the capacitance when the current density was increased from 1 to 10 mA cm −2 , and maintaining 69.72% of the initial capacitance after 5000 charge-discharge cycles at a high current density of 20 mA cm −2 . Furthermore, a fiber-based supercapacitor was assembled using the NCNT/Alg@PANI fiber and delivered an energy density of 18.6 μWh cm −2 at a power density of 80 μW cm −2 . This work presents a promising and effective approach for developing high-performance energy storage devices. Download: Download high-res image (124KB) Download: Download full-size image
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ACS Applied Polymer Materials
·
2025
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IF 4.7
Chiyuan Chen,Ziqi Zhao,Feng Liu,Hongyu Yang,Xiaming Feng,Chaojun Wan
This study addresses the flammability issue of the biodegradable polyester polylactic acid (PLA) by proposing a supramolecular flame-retardant strategy. Leveraging the critical regulatory role of aromatic topology on molecular assembly and flame-retardant performance, two supramolecular flame retardants, HEMPD and HEDAN, were synthesized through hydrogen-bonding networks utilizing hydroxyethylidene diphosphonic acid (HEDP) with m-phenylenediamine (MPD) and 1,5-diaminonaphthalene (DAN), respectively. Comparative studies within PLA composites were conducted to systematically investigate the quantitative influence of aromatic structure on gas-phase/condensed-phase flame-retardant mechanisms and thermal stability. HEMPD and HEDAN achieved a UL-94 V-0 rating at additive loadings of 4 and 2 wt %, respectively. At a 4 wt % loading, both significantly enhanced the limiting oxygen index (LOI) of PLA from 19% to 24% (HEMPD) and 24.5% (HEDAN), while reducing the peak heat release rate (PHRR) by 14.94% and 11.98%, respectively. Consequently, the flame retardancy and thermal stability of PLA were markedly improved. This work provides the first mechanistic insight into the structure–property relationship between aromatic topology and the efficacy of supramolecular flame retardants, paving the way for achieving high-efficiency flame retardancy in biobased materials.
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高影响因子
CARBON
·
2018
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IF 7.082
Xian Wang,Zuju Ma,Lulu Chai,Leqiong Xu,Ziyi Zhu,Yue Hu,Jinjie Qian,Shaoming Huang
Growing demand for clean and renewable energy resources has sparked intensive research on the development of an effective strategy to prepare non-noble metal electrocatalysts for oxygen evolution reaction (OER). Herein, we report a new type of N-doped carbon coated CoP particle/carbon nanotube composite (CNT-NC-CoP) has been synthesized by in situ nucleation and growth of ZIF-67 nanoparticles onto carbon nanotubes, which subsequently is treated with carbonization and phosphorization. Unique hierarchical structure endows as-obtained CNT-NC-CoP with high specific surface area , abundant exposed active sites, quick ion diffusion path , and good electrical conductivity , thus exhibiting the highest electrocatalytic capability with the low overpotential of 251 mV at the current density of 10 mA cm −2 and remaining long-term durability (overlapping LSV curve after 10 h). Besides, density functional theory (DFT) calculations reveal that CoOOH/graphene charged surfaces are more effective for facilitating intermediates adsorption and improving the corresponding catalytic activity .
研究领域:
材料化学
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电化学
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纳米材料科学
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能源催化
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功能材料
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计算材料学
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高影响因子
Science China-Materials
·
2021
·Vol. 65
·期 1
·43-50
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IF 8.273
Xu Jingyi,Lai Chenling,Duan LiPing,Zhang Yuxuan,Xu Yifan,Bao Jianchun,Zhou Xiaosi
Transition-metal compounds have received extensive attention from researchers due to their high reversible capacity and suitable voltage platform as potassium-ion battery anodes. However, these materials commonly feature a poor conductivity and a large volume expansion, thus leading to underdeveloped rate capability and cyclic stability. Herein, we successfully encapsulated ultrafine CoP and CoSb nanoparticles into rich N-doped carbon nanofibers (NCFs) via electrospinning, carbonization, and phosphorization (antimonization). The N-doped carbon fiber prevents the aggregation of nanoparticles, buffers the volume expansion of CoP and CoSb during charging and discharging, and improves the conductivity of the composite material. As a result, the CoP/NCF anode exhibits excellent potassium-ion storage performance, including an outstanding reversible capacity of 335 mA h g −1 , a decent capacity retention of 79.3% after 1000 cycles at 1 A g −1 and a superior rate capability of 148 mA h g −1 at 5 A g −1 , superior to most of the reported transition-metalbased potassium-ion battery anode materials.
研究领域:
材料科学
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电化学储能
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纳米材料
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能源化学
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功能纤维材料
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先进电池技术
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高影响因子
COLLOIDS AND SURFACES B-BIOINTERFACES
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2015
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IF 4.152
Tao Feng,Bin Pi,Bin Li,Lei Jiang,Yi-Meng Wang,Xue-Song Zhu,Hui-Lin Yang
Calcium phosphate cements (CPCs) are popular bone filling materials and drug carriers. However poor mechanical properties and lack of osteoinduction restrict their clinical applications. Recent studies suggested the osteogenic properties of NAC. In our study, we incorporated NAC with α-TCP/SF. We found that the compressive strength of α-TCP/SF-NAC composites increased with increase in NAC concentration, possibly due to complex three-dimensional networks of SF induced by NAC, which was large and chemically heterogeneous and induced compact oriented growth of HA crystals. However the setting time increased slightly with the addition of NAC, due to the ruptured disulfide bonds in SF. The α-TCP/SF-NAC composites also showed decent biocompatibility in vitro. As a result, these composites hold great potential as bone filling materials for clinical applications, including minimally invasive surgeries.
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高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Shang Wu,Qiyue Tong,Huize Zhang,Zhenyang Yu,Chenxu Zhu,Qiong Su,Hong Zhang,Guihua Li,Xiaojun Yang,Juzhen Kang,Quanlu Yang
NH 2 -UIO-66 has been regarded as a promising porous material owing to its high specific surface area and structural stability, although its limited conductivity restricts its application in supercapacitors. In this work, a NiCo 2 S 4 /NH 2 -UIO-66 nanoflower composite (NCS/NU) was synthesized via a vulcanization process with thioacetamide. Electrochemical measurements conducted in a three-electrode system revealed that the composite delivered a specific capacitance of 172.4 mAh g −1 at 1 A g −1 and maintained 82.1% of its initial capacitance after 5000 cycles at 5 A g −1 . Morphological characterization indicated that the nanoflower architecture was largely preserved after sulfurization. The in-situ formed NiCo 2 S 4 contributed to enhanced pseudocapacitance and induced surface wrinkling of the petals, which helped stabilize the composite structure supported by NH 2 -UIO-66. For the anode, S and N co-doped three-dimensional porous carbon (SNC) was prepared via a sol-gel method followed by stepwise high-temperature carbonization using ammonium persulfate as the activator. A hybrid supercapacitor was subsequently assembled with the NCS/NU as the positive electrode and SNC-700 as the negative electrode. The device delivered an energy density of 28.8 Wh kg −1 and retained 74.1% of its initial capacitance after 5000 charge-discharge cycles.
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JOURNAL OF FLUORESCENCE
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2026
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IF 3.4
Liu Tianhui,Yan Yiling,Chen Zhenni,Zhao Chengfei
In recent years, fluorescent sensors based on carbon quantum dots (CQDs) have been widely reported for pharmaceutical detection owing to their numerous advantages. In this study, a Fe³⁺-mediated fluorescence “off–on” sensor based on nitrogen-doped carbon quantum dots (N-CQDs) was developed for the selective detection of tiopronin (TPN). Briefly, highly fluorescent N-CQDs were synthesized via a one-step hydrothermal method using citric acid monohydrate and diethylenetriamine. XPS, FT-IR, UV-Vis, fluorescence spectroscopy, and DLS confirmed that the N-CQDs exhibit uniform size, aqueous stability, excitation-independent fluorescence, and a high quantum yield of 62.99%. Fe³⁺ selectively bound to N-CQDs to form a complex, resulting in fluorescence quenching. Subsequently, upon the addition of TPN, the fluorescence of N-CQDs showed a proportional recovery. During this process, the competitive coordination between TPN and Fe³⁺ led to the release of Fe³⁺ from the N-CQDs, thereby restoring the quenched fluorescence. The limit of detection (LOD) of TPN was 80 μmol/L, with a linear range of 0.2–0.7 mmol/L and an R² value of 0.9993. The content of TPN in enteric-coated tablets was quantified using this method, yielding recovery rates ranging from 92.59% to 104.22%. This method is simple, rapid, and reliable, offering good sensitivity without the need for expensive reagents or complex equipment. Graphical The alternative text for this image may have been generated using AI. Schematic illustration of the synthesis of N-CQDs and their application as an “off–on” fluorescent probe for TPN detection via Fe³⁺-mediated
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PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
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IF 4.6
Yatao Pan,Guangjing Hou,Xiaojuan Wang,Xia Ran,Pingan Liu,Lijun Guo
Developing novel inhibitors for the fibrillization of amyloid peptides and understanding the relevant assembly processes are essential for biomedical and biomaterial sciences. Herein, we have synthesized and characterized the nitrogen and fluorine co-doped graphene quantum dots (N, F-GQDs), and investigated their inhibition of the fibrillization of Amyloid-beta peptide (1–42) (Aβ 42 ) by monitoring the assembly morphologies in the Aβ 42 /N, F-GQDs systems. Our results indicate that the N, F-GQDs functionalized with multiple surface groups effectively inhibits the fibrillization of amyloid Aβ 42 . The strong adsorption of Aβ 42 on N, F-GQDs significantly reduces the generation of β-sheet structures and the cytotoxicity of Aβ 42 /N, F-GQDs aggregates. Accordingly, a morphological evolution from the long fibrils of Aβ 42 to the spherical particles and unique closed-loop structures of Aβ 42 /N, F-GQDs have been captured. A possible interpretation for the observed phenomena in the presence of N, F-GQDs has been proposed by combining the different inhibition effects of other GQDs on the fibrillization of Aβ 42 and the results from various control experiments. Moreover, the inhibition activity of N, F-GQDs demonstrates good adaptability to resist the fluctuation of pH value and the interference of divalent metal ions , facilitating their practical applications in the future.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 18
·8785-8796
·
IF 3.3
Jiaxin Zhang,Xianlang Chen,Jinhua Yu,Zheng Fang,Lele Yan,Zijian Wang,Zhengyu Pan,Rongrong Li,Li Zhang
Catalytic hydrodechlorination (HDC) is considered as one of the most promising strategies for the treatment of chlorinated environmental pollutants. Here we proposed a strategy for rapid complete dechlorination by exploiting a B–N co-doped hierarchically porous carbon material (BNC) to immobilize Pd NPs, which makes use of not only the micro/meso porous structure to accelerate the mass transport and to provide enormous active sites, but also the synergistic effect for codoping of B–N to enhance the interaction between Pd NPs and support and thus to stabilize and disperse the small size of the Pd particle. Ascribed to these combined advantages, Pd/BNC exhibited more distinctive catalytic dehalogenation activity (k = −0.14 min−1) and better stability (about 90.0% activity retention after 5 cycles) than Pd/C (k = −0.0070 min−1). Additionally, density functional theory (DFT) calculation indicates that the incorporation of N and B atoms in the carbon skeleton will reduce the adsorption energy of Cl− and thus Pd/BNC exhibits more remarkable stability than Pd/C during long-term HDC reactions. As a result, ultrafine Pd particles and high Pd2+/(Pd2+ + Pd0) ratios were found in Pd/BNC.
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高影响因子
COMPOSITES PART B-ENGINEERING
·
2023
·
IF 13.1
Baojun Wang,Zijie Xu,Hao Wu,Fangzhi Huang,Fenghua Liu,Shikuo Li,Hui Zhang
Multilayered Ti 3 C 2 T x MXene , due to its tunable dielectric constants and structural designability, has been identified as rising star for exploring high-efficiency electromagnetic wave absorbers. However, it is still a huge challenge to address insufficient external contact of multilayered MXene at lower filler loading. Herein, inspired by the layer-pillar-layer architecture, a controllable catalytic-assisted nitrogen-doped carbon nanotubes bridging strategy is rationally proposed on the interlaminations of multilayered MXene units (MXene/TiO 2 /NCNTs, denoted as MTNC) to enhance dielectric dissipation ability. Through chemical vapor deposition , the NCNTs bridges as pillars not only break the confinement effect of multilayered MXene architecture like the process of seed germination but also effectively optimize impedance matching and increase dielectric constants. Simultaneously, the unique NCNTs-encapsulated magnetic components successfully prevents the agglomerations of CoNi nanoparticles and local mismatching problems, which facilitates the construction of three-dimensional magnetic coupling network. Specifically, the N heteroatoms and formed TiO 2 species induce dielectric polarization and corresponding relaxation processes. Driven by unique layer-pillar-layer architecture, optimized impedance matching, and synergistic dielectric-magnetic dissipation capabilities, the resultant absorber delivers outstanding reflection loss value of −55.8 dB and broad absorption bandwidth of 5.88 GHz. This work provides a novel structural design strategy and enlightenment for developing high-performance multilayered MXene-based absorbers.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiajia Guo,Syed Comail Abbas,Hai Huang,Zifeng Hua,Md Manik Mian,Shilin Cao,Xiaojuan Ma,Yonghao Ni
Developing highly efficient, sustainable carbon cathodes is essential for emerging Zn-ion hybrid supercapacitors (ZICs). Herein, lignin's novel chemical modification (amination) has been developed to produce high quantity pyrrolic-N moieties as active sites. Furthermore, chemically modified amine moieties in lignin are vital as a natural self-activating template to generate hierarchical porosity in the 2D (graphene-like) architecture with exceedingly high surface area (2926.4 m 2 g −1 ). The rationally introduced dominated pyrrolic-N moieties boost the Zn-ion storage capacity and reaction kinetics due to the dual energy storage mechanism and efficient charge transfer between pyrrolic-N and Zn +2 ions. Furthermore, the pyrrolic-N species are energetically favorable for the adsorption of Zn +2 ions by the formation of N -Zn +2 chemical bonds. Besides, the nitrogen oxides reduce the intrinsic resistance and induce a more polarized surface, resulting in high wettability and efficient transfer of electrolytes into the pores of hydrophobic carbon materials . Subsequently, the chemically modified lignin-derived activated carbon material (Chem-ACM) as a cathode in ZICs delivers a high capacity of 161.2 mA h g −1 at 1 A g −1 with the admirable energy density of 106.7 W h kg −1 at 897 W kg −1 and excellent retention capacity (94%) after 10,000 cycles. Mainly, the assembled quasi solid-state ZICs using Chem-ACM retains the remarkable storage capacity (202 mA h g −1 at 0.2 Ag −1 ) even at a high bending angle. Notably, the Chem-ACM has been further employed in symmetric supercapacitors as an electrode, and it displays exceptional specific capacitance of 354 Fg −1 at 0.5 Ag −1 with tremendous energy (43.5 W h kg −1 ) and the power density (0.53 kW kg −1 ). Additionally, the charge storage capability of Chem-ACM is positively dependent on high nitrogen contents, and it is extrapolated that pyrrolic-N moieties are dominant active sites. Hence, the designed amination-assisted biocarbon synthesis provides a new way to prepare high nitrogen-containing biocarbon for ZICs and further understand pyrrolic-N species' impact on Zn-ion storage.
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PubMed
高影响因子
FLUID PHASE EQUILIBRIA
·
2023
·
IF 2.6
Yanqiong Bao,An Huang,Guangzhao Qin,Xiong Zheng
As isooctane and n-octanol are widely used in many industrial areas, the thermal conductivity data of these fluids is crucial in the energy conversion process. Therefore, obtaining reliable thermal conductivity data is of great significance for industrial applications. The thermal conductivity of isooctane and n-octanol was measured with a transient hot-wire device, which has a relatively expanded uncertainty of 2.0 % with a confidence level of 0.95 ( k =2). The measurement of these two fluids covers the temperature range from 303.15 to 523.15 K and the pressure range from 0.1 to 15 MPa. The experimental data were fitted into a polynomial with AADs and MDs of 0.35 % and 1.08% for isooctane, and 0.38 % and 0.99 % for n-octanol, respectively. This work is expected to supplement the data blank of the thermal conductivity of isooctane and n-octanol and promote their application.
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高影响因子
危险品化学品经营许可证（带存储）