MICROCHIMICA ACTA
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2025
·Vol. 192
·期 8
·1-11
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IF 5.3
Li Ruidan,Tian Li,Song Yujia,Guo Yanjia,Ma Guangping,Han Pengfei,Jiang Hanyue,Wang Wenzhuo,Lu Juan
The synthesis of self-supporting material ZnMnO₂ by electrospinning and high-temperature calcination is reported. A highly sensitive electrochemiluminescence (ECL) sensor for Amaranth Red (AR) detection was constructed using Luminol@Ti₃AlC₂ and ZnMnO₂ with multi-step signal amplification. Luminol-O 2 served as the ECL probe with luminescent signal originating from its reaction with dissolved oxygen. Ti₃AlC₂ was introduced as the carrier to enhance the effective concentration of the ECL reagent and improve the signal. ZnMnO 2 as the co-reaction promoter could further improve the ECL value. The highest signal was attributed to the combined catalytic action of Luminol@Ti 3 AlC 2 and ZnMnO 2 . A new method for the detection of AR was developed due to the resonance energy transfer (RET) between Luminol and AR. Under optimal conditions, the response to AR exhibited a linear range from 5.0 × 10 −15 to 5.0 × 10 −5 mol·L −1 . The sensor achieved satisfactory AR detection in candy samples. Graphical
研究领域:
分析化学
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材料科学
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电化学
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传感器技术
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纳米技术
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2026
·
IF 2.6
Mansoor Ahmad,Neha,Yijing Ai,Naseer Ahmad,Behisht Ara,Wei Sun
Monitoring of heavy metals in the environment is critical to reduce health risks. The establishment of a simple and effective electrochemical sensor with high sensitivity and a wide linear range is required for the determination of heavy metal ions. This study reports a new nanocomposite of MAX-phase Ti3AlC2 and graphene oxide (GO) for the electrochemical sensing of cadmium and copper ions. The nanocomposite was synthesized by a modified mixture method and characterized using various physicochemical characterization techniques. XRD patterns confirmed a highly crystalline, phase-pure structure, and SEM analysis revealed the rough and porous surface morphology of the Ti3AlC2@GO nanocomposite. The elemental composition and XPS spectra of the nanocomposite confirmed the successful integration of MAX-phase Ti3AlC2 with GO. The nanocomposite was modified onto a glassy carbon electrode (GCE) using a simple drop-casting procedure. The electrochemical activity of the Ti3AlC2@GO/GCE was analyzed by cyclic voltammetry with differential pulse anodic stripping voltammetry (DPASV) for metal ion analysis. The results indicated that the presence of the Ti3AlC2@GO nanocomposite on the GCE enhanced the sensitivity and selectivity for Cd2+ and Cu2+ analysis. The sensor demonstrated a wide linear range from 0.1 to 100.0 µM with low detection limits of 0.055 µM for Cd2+ and 0.059 µM for Cu2+. The Ti3AlC2@GO/GCE showed excellent stability, sensitivity, selectivity, and reproducibility, making it a promising platform for the reliable electrochemical detection of Cd2+ and Cu2+ in environmental monitoring applications.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 11
·118318
·
IF 6.3
Zetan Liu,Hailong Liang,Hua Wang,Hailin Liu,Yufeng Chen,Yanli Huo,Xiaoqing Xi,Ji Zhou
Dense Ti 3 AlC 2 and Ti 3 SiC 2 ceramics were fabricated via confined pulsed current sintering using their respective powders synthesized by molten salt method. The densification kinetics, microstructural evolution, and mechanical properties were systematically investigated. Results indicated that Ti 3 AlC 2 exhibited lower thermal stability, being susceptible to decomposition and Al exudation, whereas Ti 3 SiC 2 remained highly stable. Densification was primarily governed by diffusion creep and grain boundary sliding, yielding apparent activation energies of 148 and 200 kJ·mol 1 for Ti 3 AlC 2 and Ti 3 SiC 2 , respectively. Subsequent grain growth was controlled by mixed grain boundary and lattice diffusion, with respective activation energies of 52–63 and 124–139 kJ·mol 1 . These significantly higher activation energies in Ti 3 SiC 2 fundamentally reflected its rigid Ti-Si covalent-like bonds compared to the weaker Ti-Al metallic bonds. Dictated by this intrinsic bonding difference, the Ti 3 SiC 2 ceramics achieved a higher maximum flexural strength of 740 MPa and predominantly failed via intergranular fracture, whereas Ti 3 AlC 2 reached 573 MPa and primarily exhibited transgranular cleavage.
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高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.9
Guoqin Jiang,Zhixiong Huang,Yuzhan Lu,Haoyu Wang,Zongyi Deng
Reusable hypersonic vehicles require large area thermal protection materials with high resistance to oxidation corrosion. Conventional carbon fiber/phenolic resin composites suffer from poor oxidation corrosion resistance and are limited to single use. Here we develop a novel ceramizable composite consisting of Ti 3 AlC 2 -MoSi 2 -SiB 6 modified Ni coated carbon fiber reinforced boron phenolic resin. After 1 to 15 thermal cycles at 1200°C for 15 min each, the composite shows excellent dimensional stability. The changes in mass, thickness, and density after 15 cycles are all within 7% of the initial heat-treated sample. Flexural strength reaches 28.0 MPa after 10 cycles and remains 19.4 MPa after 15 cycles. The superior oxidation corrosion resistance arises from the synergistic effects of oxygen consumption, oxygen barrier, and self-healing functions provided by the ceramizable fillers and Ni coating. In situ formed ceramic phases preserve the fiber skeleton integrity. Ni catalyzes pyrolytic carbon (PyC) graphitization and together with ceramization products forms a dense multiphase ceramic layer that protects against oxidative attack. These synergistic effects endow the composite with outstanding reusable performance for hypersonic vehicle applications. Highlights A novel reusable ceramizable composite is fabricated by a dual-modification synergistic reinforced strategy involving ceramizable fillers and fiber coatings. It exhibits satisfactory oxidation resistance, dimensional stability, and reusability. The flexural strength after 10 thermal cycles reaches 28.0 MPa.
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ACS Nano
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2020
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IF 14.588
Lin Wang,Meiyun Zhang,Bin Yang,Jiaojun Tan,Xueyao Ding
Various wearable aerogel sensors are emerging for their light weight, fairly wide sensing range, and sensitive sensing ability. Aramid nanofibers (ANFs) as a kind of burgeoning building blocks realize multifunctional applications in diversified fields for their innate extinguished mechanical property and thermal stability. Limited by their high insulating property, in this work ANFs were designed to integrate with a 2D emerging MXene sheet with a distinct conductive property. Herein, we report an MXene/ANFs composite aerogel through a feasible controllable vacuum filtration followed by a freeze-drying process. Benefiting from the inerratic 3D hierarchical and “mortar–brick” porous structure with an ultralow density of 25 mg/cm3, MXene/ANFs aerogels are proved to possess high compressible resilience and appealing sensing performance up to 1000 times. Importantly, verified by a series of simulation experiments, the MXene/ANFs aerogel sensor shows a wide detection range (2.0–80.0% compression strain), sensitive sensing property (128 kPa–1), and ultralow detection limit (100 Pa), which still play a flexible role in detecting human light movement and even vigorous sports after undergoing ultrahigh devastating pressures (∼623 kPa). In addition, the MXene/ANFs aerogel sensor can withstand a harsh high temperature of 200 °C and shows excellent flame resistance. The MXene/ANFs aerogel with excellent integrated property, especially the highly sensitive sensing property and excellent thermal stability, presents great potential for a human behavior monitoring sensor and sensing under certain extreme conditions.
研究领域:
材料科学
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传感器技术
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DOI
PubMed
高影响因子
Materials
·
2023
·Vol. 16
·期 8
·3139
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IF 3.4
Hangwei Jiang,Xiya Chen,Danlan Cui,Kun Lu,Xiao Kong,Xingguang Zhang
Conventional methods to prepare supported metal catalysts are chemical reduction and wet impregnation. This study developed and systematically investigated a novel reduction method based on simultaneous Ti3AlC2fluorine-free etching and metal deposition to prepare gold catalysts. The new series of Aupre/Ti3AlxC2Ty catalysts were characterized by XRD, XPS, TEM, and SEM and were tested in the selective oxidation of representative aromatic alcohols to aldehydes. The catalytic results demonstrate the effectiveness of the preparation method and better catalytic performances of Aupre/Ti3AlxC2Ty, compared with those of catalysts prepared by traditional methods. Moreover, this work presents a comprehensive study on the influence of calcination in air, H2, and Ar, and we found that the catalyst of Aupre/Ti3AlxC2Ty-Air600 obtained by calcination in air at 600 °C performed the best, owing to the synergistic effect between tiny surface TiO2species and Au NPs. The tests of reusability and hot filtration confirmed the catalyst stability.Keywords:Ti3AlC2MAX;gold catalysts;novel reduction method;oxidation of aromatic alcohols
研究领域:
催化化学
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材料科学
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PubMed
高影响因子
Materials
·
2026
·Vol. 19
·期 19
·4179
·
IF 3.7
Yicheng Sun,Jun Chen,Jun Yan,Xingguang Zhang
Supported metal catalysts play a significant role in the selective organic synthesis and valorization of bio-derived platform molecules, and the development of catalyst preparation method is an important research topic. The facile in situ reduction synthesis strategy was investigated to prepare gold catalysts on Ti3AlC2-derived nanofibrous materials, using “as-produced H2” during hydrothermal synthesis as a reductive agent. The results of catalyst characterizations revealed that the metallic Au NPs (gold nanoparticles) were loaded with high efficiency. The new series of Aupre/Ti3AlxC2Tycatalysts as prepared by the in situ reduction method generally exhibited higher conversions in the selective oxidation of biomass-derived HMF (5-hydroxymethylfurfural) and aromatic alcohols, outperforming the traditional series of Audp/Ti3AlxC2Tycatalysts as made by the deposition–precipitation method. The HMF conversion was 96.9% over 2%Aupre/Ti3AlxC2Tyand was 76.9% over 2%Audp/Ti3AlxC2Ty. The HMFCA (5-hydroxymethyl-2-furan carboxylic acid) selectivity over these two catalysts was almost identical, whereas it was 96.3% over 1%Aupre/Ti3AlxC2Tyand 84.3% over 1%Audp/Ti3AlxC2Ty. The catalyst reusability tests proved that the typical catalyst Aupre/Ti3AlxC2Tymaintained reaction rates and product selectivity in at least three cycles, whereas the reusability of Audp/Ti3AlxC2Tycatalyst was relatively weaker in both reactions. Finally, the plausible catalytic mechanism was discussed according to peer studies and the research results.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Helong Zhang,Chuxiong Qiu,Rong Zhang,Hao Zhang,Yunxia Chen,Tao Zeng,Fen Qiao,Lee Li,Ghafar Ali,Xiujian Zhao,Yi Xie
We develop layered MAX (e.g., Ti 3 AlC 2 , Ti 3 AlCN, Ti 2 AlC, Ti 2 AlN) into novel photothermal silica-deposited MAX (MAX@SiO 2 ) composites and coatings for efficient seawater desalination and anti-/de-icing, by combining their strong optical absorbance capacity covering UV-Vis-NIR regions with unique surface wettability. The water evaporator with a unique gradient superhydrophilicity-hydrophilicity-hydrophobicity-superhydrophobicity is achieved by incorporating the as-synthesized hydroxyl- and methyl-modified MAX@SiO 2 composites into porous melamine foam (MF). By combining the unique gradient wettability with porous structure and strong optical absorbance, the proposed MAX@SiO 2 evaporator displays excellent seawater desalination performance with high water evaporation rates of ∼2.19 and 3.45 kg m −2 h −1 under 1.0 and 2.0 sun irradiation, respectively. The photothermal water evaporation efficiency can reach to 91.2 % under 1.0 sun illumination. Besides, by sequential spray-depositing resin-based primer and MAX@SiO 2 top-coat on glass slides and insulators, the as-achieved superhydrophobic (SH) photothermal coatings displayed excellent anti-icing and de-icing performances. The procedures described here enable a convenient and novel strategy to develop micro-nanocomposites and multifunctional coatings with strong photothermal conversion ability, which would shed light on promising potentials in energy conversion and photo-thermal applications including solar freshwater generation, sewage purification, and anti-/de-icing.
研究领域:
材料科学
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环境工程
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能源转换
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光热应用
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高影响因子
MICROCHEMICAL JOURNAL
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2022
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IF 5.304
Mansoor Khan,Mustafa Soylak
Palladium is an important metal as it has a wide range of applications in different fields but can cause cancer in human beings. Therefore, precise quantification of palladium is important. For this purpose, new material Ti 3 AlC 2 max phase having unique properties like high stability, thermal conductivity and environmental friendly has been synthesized. To increase its surface area of Ti 3 AlC 2 max phase, graphene oxide (GO) has been incorporated to form Ti 3 AlC 2 max phase GO nanocomposite. Ti 3 AlC 2 max phase GO nanocomposite was used as solid phase extracting material for microextraction and preconcentration of Pd(II) in environmental samples and medical appliances. Characterization of the adsorbent was achieved by using fourier transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive X-ray (EDX) and surface area analyzer (SAA). All the parameters that influence the extraction efficiency of the adsorbent like solution pH, amount of adsorbent, volume of sample, vortex time, desorption condition and interferences effect were determined and optimized. The limit of detection (0.327 µg/L) and limit of quantification (1.09 µg/L) show that the method is highly sensitive. The relative standard deviation was calculated as 5.48 % for five repeated measurements, which shows that the developed method is reproducible. The method is highly efficient with large values of preconcentration factor (20) and enhancement factors (20). The method was validated by applying the method to real water samples, soil samples and medical appliances with satisfied recovery results (94–106 %).
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高影响因子
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