INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Qiannan Wu,Zhiqiang Feng,Xingfu Zhou,Haiqing Li
All-day atmospheric water harvesting (AWH) using metal–organic frameworks (MOFs) presents an appealing approach for achieving high-yield water production in arid regions. However, current all-day MOF-based AWH strategies often involve intricate material preparation procedures and high energy input for water desorption, raising concerns about the water production cost. Leveraging the naturally abundant solar energy available in arid areas, herein, sprayable Ti3C2 MXene/silane-decorated hyperbranched polymer solutions (Ti3C2/sHBP) are presented. These solutions enable easy formation of robust, spray-applied coatings on monolithic MOFs upon exposure to sunlight, resulting in monolithic Ti3C2/sHBP-coated MOFs (TCM). The presence of Ti3C2/sHBP coatings equips TCMs with dual solar and electrical heating capabilities, enabling adaptive all-day AWH based on sunlight availability: solar heating-driven AWH when sufficient sunlight is present, combined solar/electrical heating-driven AWH when sunlight is insufficient, and electrical heating-driven AWH during periods without sunlight. Compared to traditional electrical heating-driven AWH, this adaptive all-day AWH delivers a similar water production performance with a 28.8% reduction in energy consumption for water desorption. Imparting MOF monoliths with dual heating functionality through a straightforward spray-applied coating demonstrates a novel, facile, and cost-effective strategy for enabling adaptive all-day AWH with excellent water productivity at a significantly mitigated energy cost.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2022
·Vol. 34
·期 8
·1329-1337
·
IF 3.077
Jie Liu,Dianping Tang
A simple and novel electrochemical immunoassay based on MXene (Ti 3 C 2 )−Au nanoparticles (AuNPs) was designed for sensitive screening of a disease-related biomarker, prostate-specific antigen (PSA), by using dopamine-loaded liposomes (DLL) for signal amplification. The system involves two parts, namely, sandwich-type immunoreaction to capture DLL and electrochemical measurement of dopamine. The target PSA can cause a specific antigen-antibody reaction and DLL are enriched in the enzyme-labeled pores. After Triton X-100 is injected into the detection cell, the carried DLL was quickly cracked to release dopamine wrapped in the cavity. A nanocomposite consisting of MXene (Ti 3 C 2 ) support to immobilize Au nanoparticles (Ti 3 C 2 −Au) was utilized to modify a glassy carbon electrode, which gives a strongly enhanced differential pulse voltammetric (DPV) signals for dopamine. In this case, the change of DPV signal depends on the amount of dopamine released by liposomes, which is further positively correlated with the concentration of the analyte PSA. Combining the of MXene (Ti 3 C 2 )−AuNPs nanomaterials (large specific surface area, excellent electrical conductivity, and good electrocatalytic properties) with the liposome signal amplification strategy, the electrochemical immunoassay exhibited excellent performance toward PSA determination with a broad linear range of 1 pg/mL to 50 ng/mL and limit of detection down to 0.31 pg/mL (S/N=3) under the optimized testing conditions. High specificity for PSA over other disease-related biomarkers and acceptable nanocomposite/electrode stability were acquired. The excellent analytical performance shows that the current strategy provides an effective detection platform for clinical sample analysis.
研究领域:
生物传感器
·
分析化学
·
纳米技术
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yuting Zhang,Suhong Li,Rong Huang,Jing He,Yufei Sun,Yanyan Qin,Lingdi Shen
Two-dimension MXene (Ti 3 C 2 T x ) membrane has attracted widespread interest in water treatment to relieve the problem of clean water shortage. Nevertheless, notorious swelling and subsequent instability problems of the MXene-based membrane when immersing in water hinder its wide application, owing to the weak interaction between the adjacent MXene laminates. Herein, a feasible strategy is proposed to stabilize and tune the nanochannels of MXene-based membranes and achieve superior nanofiltration efficiency. Poly(acrylic acid) (PAA) macromolecules are firstly inserted into the MXene nanosheets and form PAA-modified MXene (PAA-MXene) dispersion. Then, the dispersion is vacuum filtered on the electrospun polyacrylonitrile (PAN) nanofibrous substrate to form an ultra-thin PAA-MXene hydrogel barrier layer, thus assembling into PAA-MXene/PAN composite membrane . The MXene laminates will be intertwined by the long chain of flexible PAA macromolecules and thus form homologous semi-interpenetrating network structure with MXene as physical crosslinker through strong hydrogen-bond interaction, which will restrict the obvious structural change of MXene nanosheets and effectively adjust their d-spacing at ∼14.28 Å with MXene: PAA mass ratio of 1:0.5. The synergic effect of PAA and MXene nanosheets, as well as electrospun PAN nanofibrous substrate, endows the PAA-MXene/PAN membrane with superior nanofiltration performance to various dyes. The optimum PAA-MXene/PAN membrane possesses permeate fluxes of 271.26, 516.34, 300.83 L m −2 h −1 and rejections of 98.92%, 99.52%, 98.12% to DR80, AB8GX and AB90 at 0.1 MPa, respectively, which exhibit distinct advantage than the MXene-based membrane in literature. In addition, the PAA-MXene/PAN membrane has good long-time durability and is more suitable for low pressure nanofiltration. All these make PAA-MXene/PAN membrane a promising nanofiltration membrane for wastewater treatment .
研究领域:
材料科学
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环境工程
·
水处理技术
✓ 已验证
DOI
高影响因子
MICROCHIMICA ACTA
·
2023
·Vol. 190
·期 4
·1-11
·
IF 5.7
Yang Jing,Deng Changxi,Zhong Wei,Peng Guanwei,Zou Jin,Lu Yan,Gao Yansha,Li Mingfang,Zhang Songbai,Lu Limin
Heterostructured TiO 2 @MXene rich in oxygen vacancies defects (VO-TiO 2 @MXene) has been developed to construct an electrochemical sensing platform for imidacloprid (IMI) determination. For the material design, TiO 2 nanoparticles were firstly in situ grown on MXene and used as a scaffolding to prevent the stack of MXene nanosheets. The obtained TiO 2 @MXene heterostructure displays excellent layered structure and large specific surface area. After that, electrochemical activation is utilized to treat TiO 2 @MXene, which greatly increases the concentration of surface oxygen vacancies (VOs), thereby remarkably enhancing the conductivity and adsorption capacity of the composite. Accordingly, the prepared VO-TiO 2 @MXene displays excellent electrocatalytic activity toward the reduction of IMI. Under optimum conditions, cyclic voltammetry and linear sweep voltammetry techniques were utilized to investigate the electrochemical behavior of IMI at the VO-TiO 2 @MXene/GCE. The proposed sensor based on VO-TiO 2 @MXene presents an obvious reduction peak at -1.05 V(vs. Hg|Hg 2 Cl 2 ) with two linear ranges from 0.07 - 10.0 μM and 10.0 - 70.0 μM with a detection limit of 23.3 nM (S/N= 3). Furthermore, the sensor provides a reliable result for detecting IMI in fruit and vegetable samples with a recovery of 97.9-103% and RSD≤ 4.3%. Graphical abstract
A sensitive electrochemical sensing platform was reported for imidacloprid (IMI) determination based on heterostructured TiO 2 @MXene rich in oxygen vacancy defects.
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Fanyu Kong,Xiaodong He,Qianqian Liu,Xinxin Qi,Dongdong Sun,Yongting Zheng,Rongguo Wang,Yuelei Bai
Herein, a new nanocomposite was synthesized via in-situ growth of Fe 3 O 4 nanoparticles on MXene Ti 3 C 2 multilayer to improve the electrochemical performance of anodes by integrating the merits of transition metal oxide and Ti 3 C 2 , where further surface modification of Fe 3 O 4 @Ti 3 C 2 nanocomposites by carbon coating was introduced here. The nanocomposites exhibited excellent electrochemical performance in Li-ion storage when used as the anode materials, which benefited from the combination of the high capacity of magnetite and favorable electrical conductivity of Ti 3 C 2 . The optimized Fe 3 O 4 @Ti 3 C 2 -2.5 (a mass ratio of 1.1) showed a high reversible capacity of 342.9 mAh·g −1 at 1C, which exceeded the theoretical capacity of bare Ti 3 C 2 monolayer (320 mAh·g −1 ), and an impressive rate reversibility. TEM presented that the carbon layers were homogeneously coated on the surface of nanocomposites with a thickness of approximately 1 nm. The electrochemical measurement showed that C-coated Fe 3 O 4 @Ti 3 C 2 -2.5 presented enhanced cycling performance (382.9 mAh·g −1 at 1C and 236.7 mAh·g −1 at 5C) and cycling stability. This work presents a promising route for preparation of transition metal oxides@MXene nanocomposites as well as further surface modification for advanced Li-ion storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Guanghui Liu,Qingshan Xiong,Yunqi Xu,Qunling Fang,Ken Cham-Fai Leung,Min Sang,Shouhu Xuan,Lingyun Hao
Harmful bacteria are common substances in water that endanger human health, so it is urgent to establish a simple system that can tackle these hazardous substances simultaneously. In this work, a novel magnetic MXene@Fe 3 O 4 /Au/polydopamine (PDA) nanosheet with excellent photothermal-magnetolytic coupling antibacterial performance is developed. MXene , Au and polydopamine all have good photothermal properties, so the photothermal conversion efficiency of the MXene@Fe 3 O 4 /Au/PDA nanosheet reaches as high as 48.7%. After 6 min of 808 nm laser irradiation, the MXene@Fe 3 O 4 /Au/PDA nanosheets (120 μg·mL −1 ) can achieve nearly 100% antibacterial effect against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). In comparison to the sole photothermal treatment, the nanosheet at lower concentration (80 μg·mL −1 ) also exhibit stronger antibacterial properties against both Gram-negative and Gram-positive bacteria during the photothermal-magnetic coupling treatment. The result is mainly because the heat generated by the photothermal effect of the nanosheet is directly transferred to the cell membrane, and the edge of the nanosheet cuts the cytomembrane similar to a magnetic “hot nanoblade”, resulting in subsequent shrinkage, deformation and even rupture.
研究领域:
材料科学
·
微生物学
·
生物医学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Hui Dong,Jingchao Sun,Xingmin Liu,Xiaodan Jiang,Shaowei Lu
The universal application of wearable strain sensors in various situations for human-activity monitoring is considerably limited by the contradiction between high sensitivity and broad working range. There still remains a huge challenge to design sensors featuring simultaneous broad working range and high sensitivity. Herein, a typical bilayer-conductive structure Ti3C2Tx MXene/carbon nanotubes (CNTs)/thermoplastic polyurethane (TPU) composite film was developed by a simple and scalable vacuum filtration process utilizing a porous electrospun thermoplastic polyurethane (TPU) mat as a skeleton. The MXene/CNTs/TPU strain sensor is composed of two parts: a brittle densely stacked MXene upper lamella and a flexible MXene/CNT-decorated fibrous network lower layer. Benefiting from the synergetic effect of the two parts along with hydrogen-bonding interactions between the porous TPU fiber mat and MXene sheets, the MXene/CNTs/TPU strain sensor possesses both a broad working range (up to 330%) and high sensitivity (maximum gauge factor of 2911) as well as superb long-term durability (2600 cycles under the strain of 50%). Finally, the sensor can be successfully employed for human movement monitoring, from tiny facial expressions, respiration, and pulse beat to large-scale finger and elbow bending, demonstrating a promising and attractive application for wearable devices and human–machine interaction.
研究领域:
材料科学
·
生物医学工程
·
可穿戴设备
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shareen Shafique,Haodong Wang,Yegang Lu,Taimoor Iqbal,Yuheng Wang,Baihui Shen,Ran Zhao,Li Sheng,Cheng Yang,Muhammad Salman,Fei Zheng,Ziyang Hu
Metal halide perovskite photodetectors (PDs) are attractive for next-generation optical communication and biomedical sensing owing to their high absorption coefficients, bandgap tunability, and solution-processability. However, their practical deployment is hindered by interfacial defects and ion migration, which result in high dark currents, noise, and limited operational stability. Here, we report a dual-interface (DI) engineering strategy that incorporates Ti 3 C 2 T x MXene simultaneously at the buried and top interfaces of the perovskite layer. This approach effectively passivates undercoordinated Pb 2+ /I − sites, suppresses trap-assisted recombination, and mitigates ion migration, thereby enabling ultralow-noise and fast-response devices. The optimized DI PD exhibits a suppressed dark current, a detectivity of 1.94 × 10 12 Jones, a responsivity of 0.44 A W −1 , and rise/fall times of 1.65/1.00 μs at 656 nm. The device retains >97 % of its performance after 60 days of nitrogen storage. Application demonstrations confirm error-free visible-light communication up to 10 kHz and precise photoplethysmography monitoring under varying illumination. This work highlights MXene-based DI engineering as a universal and scalable strategy for advancing high-performance perovskite PDs in data communication and healthcare technologies.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yamin Feng,Weifeng Liu,Haineng Bai,Yan Zhang,Yunxiao Du,Yongqiang Liu,Long Zhang
Aqueous zinc-ion hybrid micro-supercapacitors (AZIHMSCs) with high power density, moderate energy density, good cycle life and excellent safety are promising candidates for micro-energy storage. Among them, AZIHMSCs based on Ti 3 C 2 T x MXene anodes and battery-type cathodes can provide superior performance. However, two-dimensional (2D) Ti 3 C 2 T x MXene electrodes have an inherent restacking issue and –F surface terminations that hinder ion diffusion and ultimately reduce the energy storage capacity of the corresponding AZIHMSCs. Herein, a deep alkalisation strategy was developed to synthesise oxygen-rich, functionalised MXene (O-MXene) nanofibres to solve these problems. Compared with the traditional 2D few-layered Ti 3 C 2 T x MXene electrode, O-MXene electrodes exhibit an interconnected, three-dimensional (3D) microstructure and ample oxygen functional groups, enhancing Zn 2+ affinity and improving capacitance and rate performance. First-principles calculations further reveal the enhanced interactions between O-MXene electrodes and Zn 2+ supported by atomic interaction, electronic behaviour and orbital hybridization. The AZIHMSCs fabricated with an O-MXene film anode and a MnO 2 -multiwalled carbon nanotubes (MnO 2 -MWCNTs) film cathode exhibit excellent energy density (130.6 μWh cm −2 ), power density (9.5 mW cm −2 ), cycling stability (93.29 % after 5000 cycles) and flexibility (98.43 % capacitance retained at 120° bending). This study will open new avenues for modifying MXene materials and next-generation high-performance AZIHMSCs.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2019
·
IF 3.218
W. Zheng,P.G. Zhang,J. Chen,W.B. Tian,Y.M. Zhang,Z.M. Sun
We developed herein a fast and scalable approach to synthesize three-dimensional MXene derived metal oxide/carbon nanotube/iron hybrids via microwave irradiation under ambient condition. SEM and TEM images show that carbon nanotubes vertically grow on the MXene nanosheets , with both the nanosheets and the nanotubes decorated by TiO 2 /Fe 2 O 3 nanoparticles , resulting in a hierarchical hybrid structure. The obtained hybrids demonstrate good electrochemical performance when tested as anode in LIBs , due to their three-dimensional conductive networks and hierarchical structures for efficient charge-transfer, and the accessibility of lithium ions to the electrode materials . Furthermore, this work offers new exciting opportunities to developing electrode materials with high specific capacity for energy conversion and storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2023
·Vol. 21
·期 2
·1220-1230
·
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.
研究领域:
材料科学
·
热电学
·
纳米技术
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 35
·52995-53008
·
IF 5.19
Xia Xinjing,Deng Lin,Yang Lingfang,Shi Zhou
Using MXene as substrate, CoOOH@MXene with different mass content of CoOOH were prepared and used to active peroxymonosulfate (PMS) for the sulfamethoxazole (SMX) degradation. The sample characterizations demonstrated the successful preparation of CoOOH@MXene. CoOOH@MXene possessed much higher BET surface area (183.82 m 2 /g) than CoOOH (85.36 m 2 /g) and MXene (6.89 m 2 /g) due to the good dispersibility of CoOOH particles on MXene. Due to its large surface area, 1.3CoOOH@MXene displayed the best catalytic performance for the degradation of SMX. With 0.2 g/L of 1.3CoOOH@MXene and 0.5 mM of PMS, 20 μM of SMX was completely eliminated in 10 min. The degradation followed pseudo-first-order kinetic model well, with rate constants of 0.33 min −1 for 1.3CoOOH@MXene and 0.054 min −1 for CoOOH. Influencing factors of initial pH, catalyst dosage, PMS concentration, SMX concentration, and co-existing anions on SMX degradation were assessed systematically. Recycling tests verified the excellent reusability and stability of the catalyst. Quenching experiments and electron paramagnetic resonance analysis substantiated that 1 O 2 played a leading role. Moreover, the intermediates were identified, and degradation pathways and activation mechanism of CoOOH@MXene for PMS were proposed. This work may highlight the application of MXene with transition metals in PMS activation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）