JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Hankun Tan,Li Sun,Feng Xie,Jingjing Hu,Yaru Qu,Yihe Zhang
An alkali-treated MXene-SnS hybrid was prepared through hydrothermal methods. The Alk-MXene microplates provide highway for electronic transport, and the 3D wrinkled morphology ensures sufficient channels for Li + diffusion. The alkali treatment of MXene gives Alk-MXene@SnS enhanced binding strength, which allows the SnS nanosheets to remain firm binding with the Alk-MXene substrate during cycling and overcome capacity decay caused by large volume change. The synergy between the two components guarantees the hybrid excellent electrochemical properties by enabling high electronic/ionic conductivity and superior kinetic properties as evidenced by EIS, GITT tests and DFT calculation. As a result, the Alk-MXene@SnS retains specific capacities of 519 mAh/g after 100 cycles at 200 mA g −1 , and 330 mAh/g at the high rate of 8000 mA g −1 . In addition, a reversible capacity of 421 mAh/g can be provided after long term cycle test at 1000 mA g −1 for 800 cycles.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2020
·
IF 6.444
Xinxin Sheng,Dexuan Dong,Xiang Lu,Li Zhang,Ying Chen
Phase change materials (PCMs) have attracted great interest from researchers and have been widely developed in the field of solar thermal energy storage. Herein, a novel bio-based pomelo peel foam (PPF)/polyethylene glycol (PEG) composite PCM was designed and prepared via the simple impregnation process, which is further modified with low loading of MXene nanosheets for the purpose of improving its light-to-thermal conversion efficiency, thermal energy storage capability and thermal conductivity . With the incorporation of MXene nanosheets into PPF, the light-to-thermal conversion efficiency was improved obviously, the loading of PEG in form-stable composites phase change materials (FCPCMs) increased from 86.9 wt% (FCPCM-1) to 96.2 wt% (FCPCM-2, FCPCM-3 and FCPCM-4), and the thermal conductivity of obtained PPF@MXene/PEG FCPCMs was also improved (from 0.25 W/mK to 0.42 W/mK). It shows that the obtained PPF@MXene/PEG FCPCMs can be fully utilized in the field of solar thermal energy storage.
研究领域:
材料科学
·
可再生能源
·
太阳能储能
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Muchen Lu,Jie Sun,Boyang Cui,Jian Zhang,Junlian Ren,Ruoyi Li
In this study, Pd/Ru/MXene/ nickel foam (NF) electrodes were prepared by the impregnation method and galvanostatic electrodeposition technique to investigate their electrocatalytic degradation of tetracycline (TC). Subsequently, the electron transfer mechanism during this degradation process was studied. Under the optimal conditions, the degradation efficiency of the Pd/Ru/MXene/NF composite electrode for TC reached 92.02 % at 60 min. Bursting experiments as well as H 2 O 2 generation experiments showed that OH, H* and ClO − together realized the degradation of TC. The composite electrode could effectively reduce the biotoxicity of the intermediate products of the TC degradation process. In order to reduce the aggregation of Pd and Ru nanoparticles, a scaffold structure and the introduction of a MXene intermediate layer were used to solve the problem. Electrocatalytic degradation of antibiotic molecules was facilitated by tuning the interface of the catalytic electrode to expose active sites and modulating the electronic state of the catalyst to enhance intrinsic activity.
研究领域:
环境科学
·
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Haiyang Wang,Lin Cai,Yuwei Wang,Chang Liu,Guozhen Fang,Shuo Wang
A molecularly imprinted electrochemical sensor (MIES) modified with Cu-MOF and Ti 3 C 2 Tx was successfully prepared for the detection of hygromycin B in food. According to the pH sensitive property of reversible borate ester bonds, a molecularly imprinted polymers (MIP) were constructed on the modified gold electrode (GE) surface by electropolymerization to realize the controllable elution and adsorption of template molecules. Cu-MOF with large specific surface area and Ti 3 C 2 Tx with excellent electrical conductivity cooperate to improve the overall analytical performance of MIES. The morphology and electrochemical performance of the sensor were evaluated. Under the optimal experimental conditions, the method showed superior selectivity to hygromycin B with a linear range of 5 × 10 −9 –5 × 10 −6 M and a detection limit of 1.92 × 10 −9 M (S/N = 3). The detection results of this method are in good agreement with HPLC-MS/MS, which proves that the method has reliable practicability and accuracy.
研究领域:
食品科学
·
分析化学
·
生物传感技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Xingxing Li,Yanan Ma,Yang Yue,Guosheng Li,Chuankun Zhang,Minglei Cao,Yongchen Xiong,Jintao Zou,Yongheng Zhou,Yihua Gao
In recent years, the metal ion hybrid micro-supercapacitor (MSC) comprised of the battery-type Faradaic cathode based electrode and capacitor-type anode based electrode, can realize both high power and energy density, which becomes one of the most hottest areas of energy device. Herein, we demonstrated a zinc-ion hybrid micro-supercapacitor (ZIHMSC) by designing a Ti 3 C 2 T x MXene based electrode as capacitor-type anode and vanadium pentoxide (V 2 O 5 ) based electrode as battery-type cathode. In addition, the polyacrylamide (PAM) hydrogel where ZnSO 4 dissolved was chosen as the electrolyte, which effectively avoids the security risks, unlike other hybrid MSC based on the organic electrolytes. Meanwhile, the flexible ZIHMSC also exhibits well electrochemical properties, displaying a remarkable capacitance (129 mF cm −2 under 0.34 mA cm −2 ), high energy density (48.9 μWh cm −2 at 673 μW cm −2 ) and well-cycle stability (retaining ~ 77% capacitance after 10,000 cycles). This work supports a prospective routine for constructing the new-generation flexible micro-energy storage systems.
研究领域:
能量存储
·
材料科学
·
电化学
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Xianghui Feng,Chao Zeng,Fengxiang Sui,Jingya Liu,Kai Wu,Yonghong Cheng,Bing Xiao
Herein we demonstrate the synthesis of a new out-of-plane ordered double-transition-metal MAX phase known as Mo 2 VAlC 2 . Annealing the elemental powder mixture at 1540 °C with 2.0Mo: 1.0 V: 1.3Al: 1.8C results in a high yield of 91.2 wt% for Mo 2 VAlC 2 . The crystal structure of Mo 2 VAlC 2 is determined using Rietveld refinement of powder XRD, and which crystalizes into a hexagonal lattice structure with space group P6 3 /mmc. Employing the double spherical aberration corrected transmission electron microscopy, we confirm its chemically ordering behavior of one V layer sandwiched between two Mo layers. Additionally, its two-dimensional derivative Mo 2 VC 2 T x MXene has been successfully realized by etching the Al layer of Mo 2 VAlC 2 with hydrofluoric acid. The chemical composition and microstructure of Mo 2 VC 2 T x are inspected with SEM and EDX. The resulting multilayer and intercalated Mo 2 VC 2 T x exhibit the characteristic accordion-like and paper-like appearances, respectively. This work further expands the diversity of chemically ordered double-transition-metal MAX and MXene families.
研究领域:
材料科学
·
纳米技术
·
固体化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Chengkai Liu,Yuan Tian,Yongling An,Qinglin Yang,Shenglin Xiong,Jinkui Feng,Yitai Qian
Gel electrolytes are key components for flexible energy storage devices. However, disadvantages such as poor ionic conductivity and mechanical behavior limit the practical applications of gel electrolytes. Herein, two-dimensional TiO 2 nanosheets are fabricated from Ti 3 C 2 T x MXene by a one-step hydrothermal reaction . The structure and component of Ti 3 C 2 T x MXene can be easily controlled by modulating the synthesis conditions. Influences of TiO 2 nanosheets content in PVA-based gel electrolyte are explored, which brings higher ionic conductivity and better mechanical properties with suitable additive amount. As a consequence, with the hybrid gel electrolyte, highly stable Zn plating/stripping is achieved (over 3000 h at 0.5 mA cm −2 ). Full Zn||PVA-Zn(CF 3 SO 3 ) 2 -TiO 2 ||V 2 O 5 cell shows high capacity (216 mAh g −1 after 115 cycles) and excellent cycling performance. This work provides an alternative route to develop high performance hybrid gel electrolyte for flexible energy storage devices such as Li/Na/K/Zn and supercapacitors.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
高分子化学
·
固态离子学
·
先进电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 4
·1-12
·
IF 2.8
Ni Wentao,Yang Hengyu,Liu Xiong,Liang Yongle,Wu Banghui,Zhang Huaijun,Xu Guobao,Wei Xiaolin,Yang Liwen
Although vanadium-based compounds are considered to be reliable zinc storage materials due to their high theoretical specific capacity, notorious poor conductivity and unstable structure hamper their practical applications. Herein, novel two-dimensional (2D) sandwich-like heterostructures of amorphous vanadium dioxide uniformly grown on two sides of ultrathin MXene nanosheets (A-VO x /M heterostructures) are constructed by ion adsorption method and following low-temperature annealing, which can be readily incorporated into carbon nanotube (CNT) network to obtain freestanding cathodes for aqueous zinc-ion batteries. The combination of 2D heterostructure, amorphous framework and conductive substrate endows A-VO x /M heterostructures with short ion diffusion pathway, high chemical stability, extra active sites and superior electrical conductivity. The freestanding A-VO x /M heterostructured cathodes for aqueous zinc-ion batteries exhibit a remarkable discharge capacity of 362 mAh g −1 at 0.2 A g −1 and high-rate capability of 202 mAh g −1 at 15 A g −1 as well as admirable cycling stability with a capacity decay of only 0.0043% per cycle over 3000 cycles. Besides, due to the outstanding conductivity and stability of freestanding A-VO x /M heterostructured cathodes, soft-package batteries are assembled with steady electrochemical performance, suggesting brilliant future in the field of energy storage.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
固态物理
·
应用化学
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2023
·
IF 1.4
Bo Zhang,Ruixin Wang
Compared with other types of sensors, capacitive flexible pressure sensors (CFPS), with low sensitivity, are more susceptible to environmental changes. It is still a considerable challenge to achieve high sensitivity, excellent mechanical properties and long-time structural stability simultaneously. Targeting the aforementioned issues, herein, Ti3C2 (MXene) with high dielectric constant was firstly chemically modified with a poly(ionic liquid) (PIL) via surface-initiated ATRP, and then combined with a porous polyurethane foam (PUF) 3D network structure via a one-step blending foaming method. Thanks to the organic-inorganic hybrid network based on the PU/MXene porous structures and the uniformly distributed micro-capacitor structure provided by MXene@PIL, the mechanical properties, structural stability, flame retardancy and dielectric properties of the composite foam were all significantly enhanced. When the content of MXene@PIL was 10%, the sensitivity of CFPS based on this dielectric were 17.1, 5.2, and 2.5/KPa in the pressure ranges of 0-1 KPa, 1-12 KPa and 12-100 KPa, respectively. In addition, the sensor showed the response and recovery times of 88 and 82 ms under a low pressure of 355 Pa. The light, flexible sensor prepared in this work is expected to be used in wearable devices to monitor physiological signals, and it should also be a good candidate for the next generation of man-machine interface characterization devices.
研究领域:
材料科学
·
高分子科学
·
纳米技术
·
传感器技术
·
化学工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Temitope Fausat Ajibade,Huali Tian,Kayode Hassan Lasisi,Qiang Xue,Weihao Yao,Kaisong Zhang
Despite advances in membrane technology, the separation of complex oily wastewater using membrane filtration remains a daunting challenge for the industry. Recent approaches including membrane modification with two-dimensional (2D) nanosheets, showed susceptibility to swelling, fouling, and instability during operation. As a game-changer approach, a polyacrylonitrile (PAN) UF membrane modified with 3D nanostructured composite of MXene and O-MWCNT was introduced for the first time to treat complex oily wastewater. The composite membrane showed high separation performance of soluble dye-oil-water emulsion while maintaining high water permeability. Moreover, during the operational period, the composite membrane exhibits excellent antifouling and anti-swelling properties due to the synergetic effects conferred by the 3D nanostructures. Furthermore, the composite membrane possesses remarkable chemical stability evidenced by its high corrosion resistance when exposed to a strong acid (3 M HCl) and oxidant (NaOCl) solution for a long-time period. Overall, the operational stability was maintained in terms of flux and high rejection of oil and dye over a 45 h long-term operation. Consequently, this work provides an innovative, stable, and highly facile process for fabricating scalable UF composite membrane for the treatment of complex oily wastewater in a harsh chemical environment.
研究领域:
环境工程
·
膜技术
·
废水处理
✓ 已验证
DOI
高影响因子
Applied Materials Today
·
2020
·
IF 8.352
Xin Du,Tianyu Zhao,Ziyuan Xiu,Zipeng Xing,Zhenzi Li,Kai Pan,Shilin Yang,Wei Zhou
Novel BiVO 4 @ZnIn 2 S 4 /Ti 3 C 2 MXene quantum dots (QDs) assembly all-solid-state direct Z-scheme photocatalyst is fabricated via in-situ growth combined with two-step solvothermal strategy, which forms a hierarchical core-shell structure. The proper energy band structure of BiVO 4 and ZnIn 2 S 4 and the formation of a good solid-solid contact interface between them promote the construction of Z-scheme system, which achieves effective charge separation. It is surprisingly discovered that Ti 3 C 2 MXene QDs can be applied as cocatalysts for photocatalytic overall water splitting, which could accelerate the surface redox kinetics of the catalyst due to the unique properties of Ti 3 C 2 MXene QDs . In particular, due to its excellent metal conductivity, a Schottky barrier can be formed at the interface in contact with ZnIn 2 S 4 , further promoting charge separation. BiVO 4 @ZnIn 2 S 4 /Ti 3 C 2 MXene QDs achieves effective visible-light-driven pure water splitting into O 2 and H 2 evolution rates up to 50.83 and 102.67 μmol g −1 h −1 (~1:2). In addition, it also shows high photocatalytic degradation Bisphenol A efficiency of ~96.4 %. The high photocatalytic performance can be ascribed to the all-solid-state direct Z-scheme structure favoring spatial charge separation, Ti 3 C 2 MXene QDs as cocatalysts promoting proton reduction, and hierarchical core-shell structure offering more surface active sites. This work provides new insights to fabricate high-performance direct Z-scheme assembly system.
研究领域:
材料科学
·
光催化
·
能源化学
·
纳米材料
·
环境科学
·
半导体物理
·
表面科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Yi Wang,Jun Cao,Jinghe Guo,Jianglei Zhang,Guangsen Liu,Dong Wang,Weimeng Si,Jia Song,Xiuxia Meng,Guangwu Wen
To meet the rapid development of flexible supercapacitors with both high energy density and power density, hybrid ion capacitors like lithium and sodium ion capacitors have attracted more and more attention. However, the hidden danger associated with the using of organic electrolytes limit their practical application. In this regard, a new configuration flexible zinc-ion hybrid supercapacitor (ZHSC) based on free-standing films of RGO-V 2 O 5 (RGV) battery-type cathode and RGO-MXene (RGM) capacitor-type anode in aqueous electrolyte has been designed. The RGM/RGV system consists of specific layered structure, short ion diffusion pathway, high electrical conductivity and exceptional structural stability. As a result, the ZHSC based on RGM/RGV exhibits excellent electrochemical performance, including a large specific capacity of 175 F g −1 at 0.5 mV s −1 , a maximum energy density up to 107.2 Wh kg −1 (321.6 W kg −1 ) and a high capacitance retention of 81% of its initial capacitance (10,000 cycles). Additionally, the ZHSC displays a high specific capacity of 125 F g −1 at 0.5 mV s −1 even in an aqueous gel electrolyte. More importantly, supercapacitors based on the composite films exhibit stable flexibility electrochemical performance. The investigation provides an essential strategy to synthesize composite films for application in high performance flexible hybrid supercapacitors.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）