Materials Today Sustainability
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2023
·
IF 7.8
Y. Jia,K. Wang,C. Li,S. Liu
Piezocatalysis, a new catalysis technology much relying on catalyst's piezoelectric property , attracts unprecedented research enthusiasm for applications in energy conversion and chemical synthesis, such as hydrogen peroxide production. However, the reported piezocatalytic activities are not ideal and one of the reasons is the unsatisfactory piezoelectricity , urging researchers to explore new and efficient piezocatalysts. Herein, the MAX phase materials (Ti 3 AlC 2 , Ti 3 AlCN, and Ti 3 SiC 2 ) are employed as piezocatalysts for hydrogen peroxide (H 2 O 2 ) and reactive oxygen species generation. Results suggest that Ti 3 SiC 2 possesses the highest piezocatalytic activity with a notable H 2 O 2 yield of 871.0 μmol/g/h accompanied with small amount of reactive oxygen species, while the Ti 3 AlC 2 and Ti 3 AlCN deliver relatively lower H 2 O 2 yields of 810.6 and 835.6 μmol/g/h in pure water, respectively. A series of characterizations and analysis have been employed to understand the insights of piezocatalytic activity difference and reaction mechanism. The enhanced peizocatalytic activity of Ti 3 SiC 2 can be traced to its notable piezoelectric property and reduced electronic transfer resistance as well as the improved free charge density, all of which are favorable factors benefiting the piezocatalytic H 2 O 2 generation. Moreover, H 2 O 2 production via piezocatalysis stems from both oxygen reduction and water oxidation .
研究领域:
材料科学
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催化化学
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能源转换
✓ 已验证
产品关联
DOI
高影响因子
Advanced Energy Materials
·
2017
·Vol. 7
·期 18
·1700700
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IF 16.721
Guodong Zou,Jianxin Guo,Xianyu Liu,Qingrui Zhang,Gang Huang,Carlos Fernandez,Qiuming Peng
Sodium-ion batteries are considered alternatives to lithium-ion batteries for energy storage devices due to their competitive cost and source abundance. However, the development of electrode materials with long-term stability and high capacity remains a great challenge. Here, this paper describes for the first time the synthesis of a new class of core–shell MAX@K 2 Ti 8 O 17 by alkaline hydrothermal reaction and hydrogenation of MAX, which grants high sodium ion-intercalation pseudocapacitance. This composite electrode displays extraordinary reversible capacities of 190 mA h g −1 at 200 mA g −1 (0.9 C, theoretical value of ≈219 mA h g −1 ) and 150 mA h g −1 at 1000 mA g −1 (4.6 C). More importantly, a reversible capacity of 75 mA h g −1 at 10 000 mA g −1 (46 C) is retained without any apparent capacity decay even after more than 10 000 cycles. Experimental tests and first-principle calculations confirm that the increase in Ti 3+ on the surface layers of MAX@K 2 Ti 8 O 17 by hydrogenation increases its conductivity in addition to enhancing the sodium-ion intercalation pseudocapacitive process. Furthermore, the distorted dodecahedrons between Ti and O layers not only provide abundant sites for sodium-ion accommodation but also act as wide tunnels for sodium-ion transport.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Samira Jabbarvand Behrouz,Alireza Khataee,Vahid Vatanpour,Yasin Orooji
The potential of blended loose nanofiltration membranes (LNMs) to fractionate dyes and inorganic salts in textile wastewater has become a focus of attention in recent years. In this research work, we fabricated LNMs based on polysulfone (PSf) membranes blended with l-histidine amino acid-functionalized Mo2Ga2C MAX phase (His-MAX). Scanning electron microscopy (SEM), atomic force microscopy (AFM), attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), contact angle, ζ-potential, porosity, and pore size analyses were employed to characterize the LNMs. Blending 0.75 wt % of His-MAX additive with the PSf tailored the LNM’s features by making it more water-friendly, increasing its porosity, enlarging its pores, and making its surface smoother. The pure water flux of 127.6 L/m2 h was achieved by LNM containing 0.75 wt % His-MAX, which was 2.5 times greater than the bare one. The mentioned LNM displayed a flux recovery ratio (FRR) of 68.27 and 98.57, 98.31, and 99.7% rejections for Direct red 23, Acid brown 75, and Reactive blue 21 solutions (100 mg/L), respectively. The 0.75 wt % His-MAX LNM could reject 99.1% of dye and 11.5% of salt while maintaining an FRR of 91.19% after four cycles of filtering a binary mixture solution containing Reactive blue 21 and Na2SO4. These findings highlight the potential of the fabricated LNM for desalinating dye solutions.
研究领域:
材料科学
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环境工程
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膜技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Muhammad Chhattal,Andreas Rosenkranz,Yu Kaihuan,Philipp G. Grützmacher,Zhenbin Gong,Junyan Zhang
Due to the long-standing use of MAX phase materials since the 1960s and the emergence of MXenes in 2011, both are celebrated for their extraordinary mechano-tribological properties, including layered structures, high mechanical strength , and thermal conductivity . Nevertheless, there remains a crucial research gap in comprehensively comparing their tribological performance under solid lubrication , underscoring the need for an in-depth investigation. To close this research gap, we deposited MAX phase and MXene coatings by spray-coating on stainless-steel substrates. Subsequently, we evaluated their tribological properties, deciphered the underlying mechanisms using linear-reciprocating tribometry and high-resolution material characterizations. Our results demonstrated that the MXene coatings surpass the MAX phase coating in friction reduction by 81.82 %. In terms of wear depth, MXene coating has shown a notably reduced depth compared to both the reference steel sample and the MAX phase coating. Advanced tribochemical analysis indicates that MXenes' superior tribological performance is endorsed by their ability to form a thick, patchy-like transferlayer on the counterbody, which results from their ability to shear and delaminate under acting contact stress. Our study offers a framework for future investigations into utilizing MXene-based materials in tribological applications.
研究领域:
材料科学
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摩擦学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Yuting Li,Xiang Liu,Mingxue Xiang,Qinhuan Wang,Yu Zhang,Yu Wang
Solar-driven interfacial evaporation (SDIE) has emerged as an efficient approach for sustainable freshwater generation, with current research predominantly focusing on photothermal materials and evaporator configurations. However, there is less attention from a practical engineering perspective for SDIE applications in extreme environments or industrial requirements, such as strong acids, alkalis, and high-salinity wastewater. Herein, we propose a one-dimensional (1D) MAX phase-based photothermal evaporator that combines exceptional solar-thermal conversion efficiency with high chemical stability, enabling efficient solar energy conversion to produce freshwater in various extreme environments. The engineered Ti2AlSnC nanofiber membrane evaporator demonstrates a continuous 30-day operation in concentrated acids (pH < 1) while maintaining a stable evaporation rate of 2.8 kg m–2 h–1. Furthermore, the integrated Joule heating module enables all-day operation under low-light conditions with a minimal energy input (≤3 V). The development of such a material establishes a promising strategy for more practical and durable water treatment solutions to harsh environments.
研究领域:
材料科学
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环境工程
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Süreyya Oğuz Tümay,Vildan Sanko,Ahmet Şenocak,Yasin Orooji,Erhan Demirbas,Yeojoon Yoon,Alireza Khataee
Phenolic compounds that are naturally found in food samples are not only an important part of the human diet but also useful bioactive substances for health. Among these, para- coumaric acid ( p- CA) has antibacterial and antioxidant properties and is used in many industrial processes. In this study, the novel MAX-phase material, Nb 4 AlC 3 , was successfully prepared and characterized in detail with various spectroscopic, microscopic and thermal techniques. The sensor performance of Nb 4 AlC 3 modified glassy carbon electrode (Nb 4 AlC 3 @GCE) was evaluated and analytical parameters were calculated. Experimental conditions such as pH and amount of modifier were optimized with differential pulse voltammetry (DPV) measurements. The real samples analyses of lemon, apple and pomegranate were applied for determination of p- CA with Nb 4 AlC 3 @GCE sensing system under the optimized conditions. The accuracy was evaluated by spike/recovery and high-performance liquid chromatography analysis, which accounted for high accuracy of the Nb 4 AlC 3 @GCE sensing system. The limit of detection, limit of quantification, linear working range and relative standard deviation (%) of the Nb 4 AlC 3 @GCE sensing system were determined as 0.28 and 0.85 µmol/L, 0.8–80.0 µmol/L, 3.17 %, respectively. The results showed that the proposed sensing system has the high precision at lower concentration of p- CA.
研究领域:
分析化学
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食品科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 6
·2101510
·
IF 6.389
Jun Li,Tongtong Xu,Han Bai,Zhenyu Shen,Yanyan Huang,Wenwen Xing,Zhongxiang Zhou
Microwave absorption enhancements through atomic doping in traditional materials remain a significant challenge. Herein, the MAX phase materials of Fe-doped Ti 3 AlC 2 ( x Fe-Ti 3 AlC 2 , abbreviated as TFAC- x , x = 0, 0.2, 0.3, 0.4) are synthesized via solid-phase reaction method. The X-ray diffraction, Raman, and scanning electron microscopy confirm that the TFAC- x samples are of high quality with multiphase coexistence structure and abundant interfaces. Relying on the improved impedance matching originating from structural modulation, the synergistic effects of dielectric loss and magnetic loss, as well as the enhanced interfacial polarization and defect dipole polarization, both the microwave absorption intensity and bandwidth are greatly strengthened. Accordingly, the minimum reflection loss of TFAC-3 sample can achieve -33.3 dB and the absorption bandwidth could reach 3.9 GHz with the thickness of only 1.5 mm. Moreover, the investigated frequency can cover 86% through regulating their thickness from 1.5 to 5 mm, showing the excellent frequency modulation effect. The revealed improvements in both the microwave absorption performance and properties of TFAC- x may enlighten the designing of microwave absorption materials and have potentials for widespread applications.
研究领域:
材料科学
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电磁材料
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微波吸收
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）