MOLECULES
·
2023
·Vol. 28
·期 7
·3262
·
IF 4.6
Shuya Xue,Min Shi,Jinye Wang,Jiapeng Li,Guanwei Peng,Jingkun Xu,Yansha Gao,Xuemin Duan,Limin Lu
In this work, TiO2-MXene/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) composite was utilized as an electrode material for the sensitive electrochemical detection of baicalein. The in-situ growth of TiO2nanoparticles on the surface of MXene nanosheets can effectively prevent their aggregation, thus presenting a significantly large specific surface area and abundant active sites. However, the partial oxidation of MXene after calcination could reduce its conductivity. To address this issue, herein, PEDOT:PSS films were introduced to disperse the TiO2-MXene materials. The uniform and dense films of PEDOT:PSS not only improved the conductivity and dispersion of TiO2-MXene but also enhanced its stability and electrocatalytic activity. With the advantages of a composite material, TiO2-MXene/PEDOT:PSS as an electrode material demonstrated excellent electrochemical sensing ability for baicalein determination, with a wide linear response ranging from 0.007 to 10.0 μM and a lower limit of detection of 2.33 nM. Furthermore, the prepared sensor displayed good repeatability, reproducibility, stability and selectivity, and presented satisfactory results for the determination of baicalein in human urine sample analysis.Keywords:TiO2-MXene;oxygen vacancy;PEDOT:PSS;baicalein;electrochemical sensor
研究领域:
分析化学
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材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yanan Liu,Han Zhang,Dahai Zhu,Jinping Duan,Andere Clement Miruka,Li Tang,Pan Li,Li Cai
Photocatalysis and peroxydisulfate (PS) based advanced oxidation techniques are promising technologies in the field of water treatment that can be used to destroy increasingly persistent organic contaminants. The current work used a simple hydrothermal approach to synthesize a catalyst made of composites of TiO 2 nanospheres and multi-layer Ti 3 C 2 T x sheets (TiO 2 @MXene). Tetracycline (TC) was then effectively degraded by the TiO 2 @MXene material integrated with PS activation (300 mg/L). Under simulated sunlight (AM 1.5G, P = 2.8 W) irradiation, the combination method dramatically increases TC degradation. Following a 30-min treatment with 300 mg/L TiO 2 @MXene (wt.10 %), the optimal efficiency can reach 100 %. As the reactive functional species, holes (h + ), SO 4 - •, •OH, and •O 2 − dominate the catalytic process. Furthermore, investigation was conducted into significant factors such as catalyst dosage, PS dosage, common anions, and TiO 2 loading dosage. The TiO 2 @MXene material was demonstrated to be a feasible and sustainable strategy worth taking into consideration in the mitigation of emerging water contaminants due to its ease of recovery, stability of surface properties, and recyclability. Furthermore, the proposed degradation mechanism further demonstrated the viability of TiO 2 @MXene with PS in TC degradation. This, this study provides insights into the design of effective photocatalyst coupling PS activation for the efficient degradation of organic pollutants.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 14
·1-13
·
IF 2.8
Hou Enhui,Kong Zhiguo,Wu Jianfeng,Wang Hairui,Nie Ping,Lu Ming,Chang Limin
Mxenes, a general term for a novel class of two-dimensional carbon–nitrogen compounds, which attracted extraordinary attention because of their unique electrochemical property. In this paper, an Ag-TiO 2 /MXene composite material was prepared for paraquat (PQ) detection by differential pulse voltammetry (DPV). It was found that the detection limit reached as low as 0.01 μM and linear range was from 0.05 to 15 μM (split into two sections: 0.05 to 1 μM and 1 μM to 15 μM). The Ag-TiO 2 /MXene composite electrode material exhibits excellent anti-interference properties to the species including the ions such as Cu 2+ , Na + , Ca 2+ , Zn 2+ , Cl − , SO 4 2− and biomass molecules such as glucose, ascorbic acid and uric acid. In the presence of organophosphorus pesticides, the electrode also showed good anti-interference. The excellent paraquat detection capability of the Ag–TiO 2 /MXene electrode material should be attributed to the synergistic effect obtained by decorating Ag and TiO 2 on MXene. In conclusion, the functionalization of MXenes through surface-modification provided a feasible route for ultrasensitive electrochemical sensors construction.
研究领域:
材料科学
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电化学
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环境监测
✓ 已验证
产品关联
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
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分析化学
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环境科学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Huiling Ding,Mengke Zhang,Yan Liu,Yize Yao,Zenghui Mai,Huaixin Zheng,Bo Song,Bingbing Fan,Hailong Wang,Hongxia Lu
With the rapid development of global economy and industrialization, the management and protection of water resources have become increasingly important. In this paper, a novel three-dimensional Chitosan/Fe 3 O 4 /TiO 2 @MXene photocatalyst with excellent degradation and bacterial inhibition properties was prepared by a simple one-step hydrothermal method using FeCl 3 ·6H 2 O, Chitosan (CS) and MXene (Ti 3 C 2 ) as main raw materials. TiO 2 was generated in-situ on the surface of Ti 3 C 2 nanosheets and modified by loading Fe 3 O 4 nanoparticles and CS films. The conformations and band gaps of the composites were modified, and then photocatalytic mechanisms, phase compositions, morphological structures, magnetic properties and photoelectrochemical properties of the photocatalysts were systematically analyzed. The degradation efficiency of the CS/Fe 3 O 4 /TiO 2 @Ti 3 C 2 composite photocatalyst can reach 95.9 % when the ration of CS to FeCl 3 ·6H 2 O is 1:3 and the hydrothermal temperature is 180 °C, which showing excellent photocatalytic performance. Meanwhile, the inhibition rate of Staphylococcus aureus ( S. aureus ) is close to 98.91 % under the light condition. This study further reveals that visible light is a cost-effective way to treat pollution in terms of degradation and bacteriostatic inhibition, and the composite photocatalysts can be efficiently recycled and reused under the action of a magnetic field.
研究领域:
环境科学
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材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yuqing Sun,Chenye Dai,Jian Lu,Yapeng Zhu,Yingxuan Deng,Xianyin Cai,Dong Zou,Wenheng Jing
Oil droplets are inevitably deposited on the surface of membranes, resulting in membrane contamination during oily sewage separation. To effectively prevent oil fouling, a TiO 2 @MXene membrane with an ultra-glossy hydrophilic surface was designed via in-situ thermal induction to regulate the membrane surface structure and properties. Through high temperature-induced evolving the Ti valence and the functional groups of Ti 3 C 2 T x , uniform TiO 2 nanoparticles were generated in-situ on the Ti 3 C 2 T x surface while altering the surface structure and properties, which considerably improved the hydrophilicity, underwater oleophobic properties, and surface finish of the membrane. Specifically, the TiO 2 @MXene membrane (MT600) exhibited a low water contact angle of 7.5° and a high underwater oil contact angle of 133.3°. Notably, the oil adhesion force of the membrane was as low as 0.0013 μN, outperforming most oil water separation membranes. Thus, the unique structure and surface properties endowed MT600 membrane with excellent oil retention (TOC removal efficiency of > 95 %) and antipollution ability (permeance decay rates of < 10 %) for oil-in-water emulsion separation. This is because the ultra-glossy hydrophilic and oleophobic surface prompted the formation of a continuous and stable hydration layer on the membrane surface and prevented oil droplets from falling into the membrane grooves. Benefiting from the robust, ultra-glossy surface, the MT600 membrane exhibited excellent long-term durability and reusability (emulsion permeance recovery of > 90 %) in high-salt, highly acidic, and highly alkaline environments. This study opens pathways to realize ultra-glossy membrane surface for the efficient demulsification of small size emulsions and long-lasting, stable oil water separation.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
Nano Research
·
2024
·Vol. 17
·期 6
·4764-4772
·
IF 9.5
Duan Yuhao,Wei Liuxu,Cai Chenyu,Mi Junbao,Cao Fuyuan,Chen Jiaze,Li Xiaolong,Pang Xiujiang,Li Bin,Wang Lei
The chlorine evolution reaction (CER) is a crucial step in the production of chlorine gas and active chlorine by chlor-alkali electrolysis. Currently, the endeavor to fabricate electrodes capable of yielding high current density at minimal overpotential remains a central challenge in advancing the realm of chlorine evolution reactions. Here, we grow TiO 2 and RuO 2 on MXene@carbon cloth (CC) through the favorable affinity and induced deposition effect between the surface functional groups of MXene and the metal. A self-supported electrode (RuTiO 2 /MXene@CC) with strong binding at the electrocatalyst–support interface and weak adhesion at electrocatalyst–bubble interface is constructed. The RuTiO 2 /MXene@CC can reduce the electron density of RuO 2 by regulating the electron redistribution at the heterogeneous interface, thus enhancing the adsorption of Cl − . RuTiO 2 /MXene@CC could achieve a high current density of 1000 mA·cm − 2 at a small overpotential of 220 mV, superior to commercial dimensionally stable anodes (DSA). This study provides a new strategy for constructing efficient CER catalysts at high current density.
研究领域:
电化学
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催化
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材料科学
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纳米技术
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化学工程
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Jie Wei,En-Kang Wu,Ji-Hao Zhang,Zhen Zhang,Xiao-Cong Tang,Tian Qiang,Yong-Woo Jang,Xiao-Feng Gu,Meng Zhao,Svetlana von Gratowski,Jun-Ge Liang,Ming-Yang Yan,Cong Wang
Acetone sensors continue to command significant attention as a robust platform for emissions control, industrial safety monitor, and diagnostic analysis of human exhaled gas for diabetes monitoring. This study presents the design and fabrication of an ultra-narrowband, interdigital capacitor (IDC)-based three-level split ring resonator (TSRR) microwave gas sensor for rapid acetone detection. MXene-TiO 2 composites with varying mass ratios were deposited onto the resonator surface to evaluate the gas-sensitive properties of TiO 2 /MXene materials across acetone concentrations of 10–500 ppm. Results demonstrate that the microwave acetone sensor incorporating the TiO 2 /MXene (3 wt%) composite exhibits exceptional performance: high sensitivity (1544 mdB/ppm), rapid response and recovery durations (130 s and 140 s, respectively), superior selectivity, and excellent stability under high-humidity conditions—significantly surpassing existing microwave gas sensors. Furthermore, the gas-sensing mechanism was elucidated through impedance-matching circle diagrams corresponding to varying acetone concentrations. MXene materials, renowned for their expansive specific surface area, exhibit considerable promise in gas sensing applications, particularly for room-temperature acetone detection with high selectivity and sensitivity extending to ppb concentrations. This investigation introduces a novel paradigm for room-temperature acetone gas detection, as evidenced by the development of triboelectric plasma-regulated high-sensitivity sensors.
研究领域:
传感器
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微波工程
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气体传感技术
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纳米材料
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化学传感器
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电子器件
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2019
·
IF 2.752
Chongyan Hao,Yuan Liao,Yang Wu,Yajing An,Jiannan Lin,Zhengfei Gu,Minhong Jiang,Shi Hu,Xiaotian Wang
In this work, we report RuO 2 -loaded TiO 2 –MXene hybrid nanostructure as a promising photocatalyst possessing remarkable activity for photocatalytic nitrogen fixation in water at room temperature. The MXene was synthesized by HF etching of the precursor Ti 3 AlC 2 and used as the substrate for the growth of RuO 2 nanoparticles and TiO 2 through a hydrothermal reaction . The benign activity is mainly attributed to the synergetic effect among MXene, TiO 2 , and RuO 2 in photocatalytic ammonia synthesis by combining light harvesting and nitrogen activation.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Cai Liu,Peng Zhao,Keren Lu,Shuai Han,Chao Zhang,Xifeng Xia,Wu Lei,Qiubo Guo,Qingli Hao
Heterostructured composites, inheriting the integrated properties of the individual components due to the synergistic effect, have engendered great attention in materials science and energy storage. However, conventional biphasic heterostructures not only optimize the performance of the composites but also aggregate the inevitable drawbacks, which can be addressed with the construction of the triphasic heterostructures by introducing an appropriate intermediate phase, significantly. Herein, a two-dimensional (2D) double-heterostructures MoSe 2 -TiO 2 -MXene anode is architected for Li-ion storage, which combines the advantages of the high theoretical capacity of MoSe 2 and metallic conductivity of MXene. Besides, the in-situ derived TiO 2 can alleviate the irreversible phase transition of MoSe 2 , arising from the low electronic/ionic conductivities, through electronic coupling effects. Meanwhile, the intermediate phase of TiO 2 can further prevent the restacking issue of MXene, thus sustaining its high conductivity. Finally, the three-dimensional (3D) printing technology is employed to further improve the kinetics of the electrodes for Li-ion capacitors (LICs), which deliver the power density of 5563 W kg −1 at an energy density of 51 Wh kg −1 , and a remarkable cycling stability for 20 000 cycles at 1 A g −1 . This work deepens the understanding of the influence of heterostructured engineering on the design of high-energy/power storage devices.
研究领域:
材料科学
·
能源存储
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Bo Kang,Chunhui Bai,Letian Huang,Chunling Zhu,Xiao Zhang,Yujin Chen
Electromagnetic pollution, driven by the proliferation of high-frequency electronic gadgets, presents substantial threats to human health and environment. Electromagnetic wave absorption (EMA) materials are critical for mitigating these effect. MXene, a two-dimensional material with high conductivity, shows promise but often suffers from reflection due to poor impedance matching. Herein, we propose an efficient MXene-based composite material composed of N-doped carbon-coated TiO 2 on MXene hollow spheres (TiO 2 /M@NC). The TiO 2 /M@NC composite exhibits a remarkable minimum reflection loss of −43.4 dB at 2.25 mm thickness and an effective absorption bandwidth of 4.64 GHz at 2.00 mm thickness, outperforming many reported MXene composites. Experimental results demonstrate that the hollow structure and abundant interfaces enhance dielectric loss and impedance matching, synergistically optimizing electromagnetic wave absorption. This work provides a promising approach for the development of advanced EMA materials with superior absorption performance.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2021
·Vol. 36
·期 24
·5002-5012
·
IF 3.089
Zhou Haijun,Jiresse Nguetsa Kuate Loic,Zhang Weirun,Chen Zhengyang,Zhang Yamei,Zhang Jiaoxia
The photodegradation technology can improve the status quo of environmental problems seriously which hindered the development and progress of human society. In this work, the two-dimensional transition metal carbide Ti 3 C 2 was prepared by HF etching of Ti 3 AlC 2 , and subsequently TiO 2 crystals were produced by hydrothermal method to prepare TiO 2 /Ti 3 C 2 composite. The Ag nanoparticles were then doped by photoreduction to form a ternary Ag/TiO 2 /Ti 3 C 2 composite. The effect of photocatalytic degradation of the methyl orange solution by Ag/TiO 2 /Ti 3 C 2 was investigated. The degradation only with Ag/TiO 2 /Ti 3 C 2 is worser than TiO 2 /Ti 3 C 2 , so H 2 O 2 was added to improve the catalytic ability and explore the photocatalytic mechanism. In 420 min, the degradation efficiency of methyl orange (MO) solution reached 71.09% due to the active-free radicals preventing the recombination of electron hole pairs to improve the catalytic performance of photocatalytic materials. Graphical abstract
研究领域:
环境科学
·
材料科学
·
化学
✓ 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）