International Journal of Applied Ceramic Technology
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2023
·Vol. 21
·期 2
·1220-1230
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IF 2.1
Yi Qin,Mengxue Wang,Xiaohan Li,Yajuan Zhang,Shenglai Tang,Jianfeng Zhu,Ting Zhao
SnSe-based materials have attracted widespread attention in thermoelectrics due to their outstanding thermoelectric performance. However, the pristine and unmodified polycrystalline SnSe reveals poor electrical properties. Doping and constructing nanostructured composite architectures to produce energy filtering effect proved to be an effective method to strengthen thermoelectric performance. In this study, Ti 3 C 2 /Sn 0.98 Cd 0.02 Se composites are successfully fabricated by the solvothermal method combined with the electrostatic self-assembly method and spark plasma sintering. The phase interface introduced by incorporating Ti 3 C 2 into Sn 0.98 Cd 0.02 Se can effectively filter low-energy carriers due to its generation of energy barriers, thereby the Seebeck coefficient of x wt% Ti 3 C 2 /Sn 0.98 Cd 0.02 Se x = (0.05, 0.5, 1) samples is better than that of the pristine Sn 0.98 Cd 0.02 Se over the whole temperature range. Meanwhile, high conductivity was also obtained in 1 wt% Ti 3 C 2 /Sn 0.98 Cd 0.02 Se sample so that the high power factor of 3.31 μWcm −1 K − 2 was acquired at 773 K. Ultimately, a peak ZT value of 0.41 was obtained at 773 K, compared with pristine Sn 0.98 Cd 0.02 Se, and the thermoelectric performance improved by 24%. This study offers an available approach to efficiently enhance the thermoelectric properties of polycrystalline SnSe-based materials.
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Journal of Environmental Chemical Engineering
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2022
·
IF 7.968
Si-ruo Chen,Ting Wang,Xinyi Zhuo,Yu-xing Wang,Li-guang Wu
Aiming to enhance permeation and anti-fouling performance of PVDF membrane, IL/PVDF and MXene-IL/PVDF mixed matrix membranes (MMMs) were fabricated by incorporating 1-hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ionic liquid (IL) and MXene-IL. The microstructures of IL/PVDF and MXene-IL/PVDF MMMs were characterized by TEM, SEM, FTIR, XRD, and XPS analysis. The performance of the MMMs was evaluated in the dead-end filtration, and results showed that IL addition would increase the pore size and hydrophilicity of IL/PVDF MMMs, thereby enhancing water flux and anti-fouling performance of the MMMs. However, IL would be dissolved out from IL/PVDF MMMs during the filtration process, which would depress the flux recovery rate of the MMMs. For MXene-IL/PVDF MMMs, IL was encapsulated by intercalating into the MXene nanosheets and effectively prevented the loss of IL from Mxene-IL/PVDF MMMs in the running process. MXene-IL/PVDF MMMs had high water flux and antifouling performance, and the maximum flux recovery rate of MXene-IL co-incorporated PVDF MMMs reached 96% after four-cycle filtration, and the corresponding water flux was 129.37 L·m −2 ·h −1 . Compared with PVDF membrane, pure water flux and flux recovery rate of MXene-IL/PVDF mixed matrix membranes increased by 4.37 and 1.83 times, respectively.
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Qingbin Xu,Linchun Shi,Weijun Kong,Jing Wang,Peigen Xiao,Jinxin Liu
A meticulously engineered bacillus-shaped CoNi ZIF-MXene@MWCNT carbon cloth (CC) composite was synthesized through a one-step immersion method, which was employed in the development of a novel electrochemical (EC) sensor for the sensitive detection of salidroside (SAL) in Rhodiola. Characterization of the CoNi ZIF-MXene@MWCNT CC was conducted using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), and EC methods. The bacillus-shaped composite showcased an exceptionally high rate of active site exposure, superior conductivity, and electrocatalytic efficiency, attributed to the synergistic effects of the constituent materials. The remarkable electrocatalytic capability facilitated the redox reaction of SAL, marked by a significant enhancement in the current signal. This led to a concentration-dependent response enabling the quantitative detection of SAL. The mechanism of the redox reaction might be the oxidation of the phenolic hydroxyl group of SAL. Demonstrating high sensitivity, selectivity, and stability, this novel bacillus-shaped composite-based EC sensor achieved a low detection limit (LOD) of 0.0958 µ g/mL for SAL, within an effective linear range of 0.5–500 µg/mL. Importantly, the EC sensor proved to be adept at practical detection of SAL in Rhodiola samples with complex matrices, and the salidroside content of Rhodiola crenulata was much higher than that of Rhodiola rosea , indicating that Rhodiola crenulata may have a higher medicinal value, offering a promising avenue for rapid and sensitive detection of SAL.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Shiquan Li,Jianhua Zhu,Wei Lu,Zhaoxi Liu,Zhuosen Wang,Liu Wang,Yapeng Tian,Xinwei Cui
Sodium-selenium (Na-Se) batteries have gained attention due to their high energy density and power density, resulting from the liquid–liquid reaction at the interface in the dimethoxyethane electrolyte. Nevertheless, the pronounced shuttle effect of polyselenides causes low coulomb efficiency and inadequate cycling stability for Na-Se batteries. Herein, the iron nanoparticles surface modified accordion-like Ti 3 C 2 T x MXene (MXene/Fe) synthesized via the molten salt etching is utilized as the host of Se species for high-performance Na-Se battery cathode. Benefiting from the layered structure and chemical adsorption of accordion-like MXene, the shuttle effect of the cathode is effectively inhibited. Simultaneously, electrochemical kinetics is boosted due to the catalytic effect of Fe nanoparticles, which facilitate the transformation of polyselenide from long-chain to short-chain, contributing to pseudocapacitive capacity. Consequently, the Se-based cathode delivers a steady capacity of 575.0 mA h g −1 at 0.2 A/g, and even a high capacity of 500 mAh/g at 50 A/g based on the mass of Se@MXene/Fe electrode, indicating the ultrafast Na + ion storage. Most notably, this structure demonstrated remarkable long-term cycling stability for 5000 cycles with a high capacity retention of 97.4 %. The electrochemical energy storage mechanism is further revealed by in situ Raman. Herein, the confinement-catalysis structure shines light on inhibiting shuttling and facilitating ultrafast ion storage.
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CARBON
·
2022
·
IF 11.307
Wenjun Huyan,Junru Yao,Jiaqi Tao,Feng Yang,Xuewei Tao,Zhengjun Yao,Jintang Zhou,Zibao Jiao
0D-2D Polydopamine (PDA)-derived carbon nanoparticles @ MXene composites (PCM) with high microwave absorption properties were prepared by in-situ self-polymerization combined with vacuum pyrolysis . As the “nano clothing” of MXene , the moderate accumulation of PDA-derived carbon nanoparticles makes enough interface contact with MXene nanosheets , which not only improves the impedance matching of MXene reasonably but also optimizes the dielectric loss . Based on the multi-dimension structure and multi-component synergistic effect , when the filling amount of the composite is only 7.5 wt% and the thickness is 2.8 mm, the best reflection loss at 10 GHz is −46.92 dB and the maximum effective absorption bandwidth is 7.01 GHz. This work provides a synthesis strategy of crystal/amorphous heterointerface and offers a new way for the preparation of lightweight, broadband, and efficient microwave absorption materials , showing great application potential.
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TRIBOLOGY INTERNATIONAL
·
2022
·
IF 5.62
Yuhong Cui,Shenghua Xue,Xin Chen,Wei Bai,Shujuan Liu,Qian Ye,Feng Zhou
Herein, the MXene@Cu nanocomposites were prepared via electrostatic adsorption of Cu 2+ and then in-situ reduction. The Cu 2+ is uploaded on the surface of MXene nanosheets via electrostatic adsorption, which was followed by in-situ reduction with NaBH 4 to obtain Cu nanoparticle attached MXene (MXene@Cu) hybrids. The results revealed that the friction coefficient of MXene@Cu decrease from 0.434 to 0.110 and the wear volume loss decreased by 88.1% via changing the loading amount of Cu nanoparticles. The excellent tribological performance of MXene@Cu is attributed to the synergistic effect of MXene nanosheets and Cu nanoparticle , which can adsorb on the surface of friction pair and induce tribochemical reaction. A stable protective film is formed on the worn surface, thereby reducing fiction and wear.
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ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
He Chen,Xu Xiao,Qizhen Zhu,Peng Zhang,Xiaoxue Wang,Bin Xu
Mn3O4 is regarded as a promising anode material for lithium-ion batteries (LIBs) based on its ultrahigh theoretical capacity (937 mAh g–1) and low cost but suffers from poor electronic conductivity and large volume variation during the lithiation/delithiation process, which result in dramatic capacity fading and inferior rate capability. Ti3C2Tx MXene, a novel two-dimensional transition metal carbide with metallic conductivity, excellent mechanical properties, and hydrophilic surface, could be an ideal candidate to improve the lithium storage performance of Mn3O4. Here, a unique flexible, 2D–2D Mn3O4/MXene film is fabricated by assembling 2D Mn3O4 with Ti3C2Tx nanosheets through a simple vacuum filtration approach. In this unique 2D–2D nanostructure, MXene nanosheets buffer the volume change of Mn3O4 during the charge/discharge process. Moreover, the introduction of MXene enables the fabricated 2D–2D nanostructure with excellent flexibility and can be directly used as an electrode for LIBs, which is beneficial for enhancing the energy density of the assembled batteries. As a result, the flexible film of Mn3O4-MXene-8-2 shows excellent lithium storage performances in terms of specific capacity (931 mAh g–1 at 0.05 A g–1), rate capability (624 mAh g–1 at 1 A g–1), and cycling stability, demonstrating its great potential for the application in LIBs.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Huanmin Liu,Chao Wu,Kangle Lv,Dingguo Tang,Qin Li
Photogenerated charge separation is a challenging step in semiconductor-based photosynthesis. Though numerous efforts have been devoted to developing multi-component photocatalyst heterostructures for improving charge separation efficiency, the short distance between electrons and holes-aggregated regions still leads to undesirable charge recombination. Herein, a facile and commercial in-situ synthesis method was designed to directly prepare a three-component Au–carbon–TiO 2 photocatalyst from Ti 3 C 2 MXene , air, CO 2 , and HAuCl 4 , in which the carbon layer bridged Au and TiO 2 nanoparticles for stable and efficient photocatalytic hydrogen production. Kelvin probe measurements and density functional theory (DFT) calculations demonstrated that a multi-interfacial charge transmission network was successfully constructed to achieve a directional and long-distance spatial charge separation/transfer channel between TiO 2 and Au through carbon layer, desirably inhibiting the recombination of photogenerated charge carriers. The hydrogen production rate of the formed three-component Au/C–TiO 2 (CTA) photocatalyst was demonstrated to be 27 times higher than that of Au–TiO 2 , which also surpassed many reported Ti 3 C 2 MXene-derived carbon–TiO 2 photocatalysts. This work sheds light on the ingenious use of 2D MXene to form a well-behaved TiO 2 -based photocatalytic system and helps to propose future design principles in accelerating charge transfer.
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ACS Applied Nano Materials
·
2022
·
IF 6.14
Peng Zhang,Junyou Chen,Lingfei Feng,Mingchi Jiang,Bin Xu
Silicon (Si) shows great potential for lithium-ion batteries (LIBs) due to its high theoretical capacity and low working potential. However, its intrinsic low electronic conductivity and large volume expansion during lithiation result in dramatic capacity fading and poor rate capability. Herein, a dual-confinement strategy is proposed for improving the lithium storage properties of Si by uniformly anchoring Si nanoparticles within a MXene/ZIF-8 derived carbon framework. In the Si/MXene@C composite, Si nanoparticles tightly bond with MXene and carbon through the formed interfacial Si–O–Ti and Si–C bonds, respectively, which is beneficial for alleviating the volume expansion of Si and promoting the interfacial charge transfer. Therefore, the Si/MXene@C composite exhibits excellent lithium storage performances in terms of high capacity (1006.1 mAh g–1 at 100 mA g–1), stable cycle performance (862.9 mAh g–1 after 150 cycles at 100 mA g–1), and superior rate capability (233.3 mAh g–1 at 5 A g–1), indicating its promising potential as an anode material for next-generation high-performance LIBs.
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CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yingjie Zhan,Bingfei Nan,Yingchun Liu,Enxiang Jiao,Jun Shi,Mangeng Lu,Kun Wu
The use of inorganic nanomaterials as “building blocks” and organic components as “mortars” to build nanocomposites are particularly well-suited to optimize the performance of composites. Here, based on nacre-inspired thought, a novel strategy of fabricating a steady and function tunable three-dimensional MXene thermal conductive cross-linking network skeleton featured by silica (SiO 2 ) nanoparticles bridge was reported, which is constructed in the carboxymethylated cellulose nanofibril (CNF) nanocomposites for facilitating thermal management capability property. Benefited from the strong hydrogen bonding interactions, the thermal conductive fillers of SiO 2 @MXene are able to uniformly disperse and reduce the agglomeration. SiO 2 nanoparticles are uniformly attached to the MXene interlaminar by in-situ method, which is crucial to provide fast conduction channel for heat. The maximum in-plane thermal conductivity value of the SiO 2 @MXene/CNF nanocomposite film increased form 5.0 W·m −1 ·K −1 to 26.4 W·m −1 ·K −1 with introducing 2 wt% SiO 2 nanoparticles, accompanied by 5.28 times higher than that of pure CNF film and 436% increase in in-plane conductivity, which indicates that SiO 2 nanoparticles are bridged to each thermal transport paths to reduce the interface thermal resistance within CNF-based nanocomposite film. In addition, the cooperative interaction effect of MXene nanosheets and SiO 2 nanoparticles in constructing the controllable structural of cross-link framework is contributed to conspicuous improvement of thermal conductivity and flame retardancy. It is worth noting that the effective protective layer formation of SiO 2 nanoparticles after the combustion process, simultaneously thermal stability at high temperature which with residue yield (88.70 wt%) of the nanocomposite film, and achieved for a distinguished flame resistance in practical application. Bioinspired thought engineering has become an emerging and promising thought, this type of multifunctional nanocomposite film is highly promising to be a competitive candidate in the fireproof thermal management field and provides an excellent platform for preparing assembled by other polymeric thermal-management materials.
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ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Yuantao Yan,Xiaoli Zhao,Huanglin Dou,Jingjiang Wei,Zhihua Sun,Yu-Shi He,Qiang Dong,Haisong Xu,Xiaowei Yang
Silicon-based materials are the desirable anodes for next-generation lithium-ion batteries; however, the large volume change of Si during the charging/discharging process causes electrode fracture and an unstable solid–electrolyte interphase (SEI) layer, which severely impair their stability and Coulombic efficiency. Herein, a bundle of silicon nanoparticles is encapsulated in robust micrometer-sized MXene frameworks, in which the MXene nanosheets are precrumpled by capillary compression force to effectively buffer the stress induced by the volume change, and the abundant covalent bonds (Ti–O–Ti) between adjacent nanosheets formed through a facile thermal self-cross-linking reaction further guarantee the robustness of the MXene architecture. Both factors stabilize the electrode structure. Moreover, the abundant fluorine terminations on MXene nanosheets contribute to an in situ formation of a highly compact, durable, and mechanically robust LiF-rich SEI layer outside the frameworks upon cycling, which not only shuts down the parasitic reaction between Si and an organic electrolyte but also enhances the structural stability of MXene frameworks. Benefiting from these merits, the as-prepared anodes deliver a high specific capacity of 1797 mA h g–1 at 0.2 A g–1 and a high capacity retention of 86.7% after 500 cycles at 2 A g–1 with an average Coulombic efficiency of 99.6%. Significantly, this work paves the way for other high-capacity electrode materials with a strong volume effect.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Hongwei Zhang,Deping Xiong,Yandong Xie,Kaidan Wu,Zuyong Feng,Kunhua Wen,Zhaoying Li,Miao He
Potassium-ion and sodium-ion batteries (PIBs and SIBs) attract the attention of researchers because of their high earth abundance, low cost, and even similar principle to lithium-ion batteries. MOF-derived transition metal carbide composites are regarded as promising electrode materials because of their high specific capacity and excellent electrochemical activities while equipped with excellent sodiophilic for sodium nucleation and deposition. Therefore, Co 3 C/MXene@C composites with a large specific surface area are designed for both PIBs and SIBs. In detail, the Co 3 C component plays a key role in electrocatalysis of reversible conversion of some components of solid electrolyte interface films, while rich defective carbon and nitrogen content can improve the whole activity of the material. As results, the Co 3 C/MXene@C electrodes deliver an excellent reversible capacity of 236 mA h g −1 with the coulombic efficiency of 98.51% (for PIBs) and 275.9 mA h g −1 with the coulombic efficiency of 98.43% at 200 mA g −1 (for SIBs) after 100 cycles, superior rate performance of 80.6 mA h g −1 and 105 mA h g −1 at 2000 mA g −1 for PIBs and SIBs, respectively. With these outstanding electrochemical performances , the Co 3 C/MXene@C electrodes show a potential application prospect for potassium-ion and sodium-ion batteries.
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