NANOTECHNOLOGY
·
2024
·Vol. 35
·期 50
·505502
·
IF 2.9
Zhihua Zhao,Hepeng Zhang,Pu Chen,Guixin Jin,Lan Wu
Two-dimensional material (2D material) MXene has great application potential in gas sensors because of its excellent controllable performance and vast specific surface area. In this study, we used a straightforward in-situ electrostatic self-assembly technique to create Fe(OH)3/Ti3C2Tx nanocomposites, which were then used to fabricate gas sensors for ammonia detection at room temperature (25 °C). Several characterization methods were performed aimed at determining the surface appearance and construction of the nanocomposites, and the sensing characteristics and mechanism were also systematically examined. The findings demonstrate the effective incorporation of amorphous Fe(OH)3 nanoparticles on the surface of Ti3C2Tx. Additionally the nanocomposites of Fe(OH)3/Ti3C2Tx have considerably higher specific surface area than pure Ti3C2Tx, hence offering more active NH3 adsorption sites. The response of the sensor to 100 ppm NH3 was 48.6% at room temperature, which was 9.3 times more higher than that of pure Ti3C2Tx. The sensors also have the advantages of long-term stability (33 d), low NH3 detection limit (500 ppb), and rapid recovery time (85 s) and response times (78 s). It is anticipated that this work will be helpful for developing the new generation of wearable ammonia sensors at room temperature.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS
·
2025
·Vol. 25
·期 18
·5838
·
IF 3.5
Xiu Liu,Xing Tang,Hongjun Chen,Xiang Wu,Zitong Fu,Mingyu Peng,Chenzhong Jin,Jun Guo
Given the significance of safeners and their potential to emit harmful substances into the environment, it is essential to develop suitable analytical methods for detecting these compounds. This study presents a molecularly imprinted electrochemical sensor designed for the sensitive and rapid detection of fenclorim (FM), a type of safener. Titanium carbide nanomaterials (Ti3C2Tx) were electrochemically deposited onto the glassy carbon electrode (GCE) to enhance electron transfer. Subsequently, molecularly imprinted polymers were fabricated through the electropolymerization of catechol in the presence of FM. The electrochemical behavior of each modified electrode was investigated using differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). Under optimized experimental conditions, the MIP/Ti3C2Tx/GCE sensor demonstrated a linear relationship with FM concentration ranging from 5 to 300 nM, with a limit of detection (LOD) of 1.56 nM (S/N = 3). Additionally, the sensor demonstrated excellent selectivity, stability, and reproducibility for FM detection and was successfully utilized for quantifying FM in real water samples.
研究领域:
分析化学
·
环境监测
·
纳米材料
·
电化学传感
·
食品安全
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Wei Li,Bita Farhadi,Miaomiao Liu,Peiru Wang,Jiayi Wang,Yaoyao Zhang,Guoxiang Ma,Runnan Huang,Jiayi Zhao,Kai Wang,Yao Tong
The advancement of interface engineering has demonstrated remarkable efficacy in overcoming the primary impediment associated with sluggish reaction kinetics in supercapacitor electrodes. In this investigation, we employed a facile co-precipitation method to synthesize NiCoMoO 4 /MXene heterostructures utilizing Ti 3 C 2 T x MXene nanosheets as carriers. This heterostructure inhibits the restacking of MXene nanosheets and simultaneously enhances the exposure of electrochemically active sites in NiCoMoO 4 nanorods, thereby mitigating the reduction in specific capacitance resulting from volumetric fluctuations. The NiCoMoO 4 /MXene electrode, possessing pseudo-capacitance properties, demonstrates an impressive level of specific capacitance, exceptional performance across various charging rates, and consistent behavior throughout repeated cycles. By optimizing the mass ratio, this electrode achieves a specific capacity of 1900 F/g under a current density of 1 A/g. Even after enduring 10,000 cycles at a significantly higher current density of 5 A/g, it still maintains an impressive retention rate of 94.73 %. Our density functional theory (DFT) calculations indicate that the enhanced electrochemical performance can be attributed to the improved electronic coupling within the NiCoMoO 4 /MXene heterostructure. The integration of NiCoMoO 4 /MXene cathode and activated carbon (AC) anode with an alkaline gel electrolyte containing potassium ferricyanide in flexible quasi-solid-state supercapacitors (FSSCs) results in exceptional electrochemical performance and flexibility. These FSSCs demonstrate a maximum energy density of 72.89 Wh kg −1 at a power density of 850 W kg −1 , while maintaining an impressive power output of 16,780 W kg −1 with an energy density of 37.28 Wh kg −1 . Based on these outstanding properties, it is evident that the NiCoMoO 4 /MXene heterojunction possesses significant advantages as electrode material for supercapacitors, and the fabricated FSSCs devices pave a new pathway for flexible electronic devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Donghai Wu,Hanyu Fang,Guanghua Lu,Runren Jiang,Jianchao Liu
In this study, four pharmaceutical compounds including sulfamethoxazole (SMX), oxytetracycline (OTC), ciprofloxacin (CIP), and ibuprofen (IBU) with different functional groups and p K a , were selected as representative pollutants to systematically investigate the Pharmaceutical and Personal Care Products (PPCPs) adsorption on a nanomaterial Ti 3 C 2 T x MXene in simulated solution and real surface water . The results show that Ti 3 C 2 T x was an excellent PPCPs adsorbent, but the process was affected by the characteristics of pollutants pronouncedly, the obtained maximum adsorption capacity were OTC (210.97 mg/g) > IBU (185.05 mg/g) > CIP (160.60 mg/g) > SMX (68.12 mg/g). Specially, the charge screen effect caused Ti 3 C 2 T x precipitation during CIP adsorption. The response surface methodology analysis indicates that initial solution pH (3–11) had significant effects, while the influence of humic acid (0–10 mg/L) or sodium chloride (0–10 mg/L) was limited, and the interactions between these factors was slight. In the co-adsorption process, the competitive effects reduced the adsorption of SMX and IBU, however, the enhanced positive ionization and the possible electrostatic repulsive interactions promoted that of CIP and OTC. In real surface water, although the influence of natural organic matters was negligible, the preferential adsorption of background metal ions such as aluminum and calcium ions reduced the adsorption capacity of the selected PPCPs by approximately 29.9 % to 88.4 %. Moreover, the adsorbent characterization conjoined with performance examination imply that electrostatic attraction dominated the Ti 3 C 2 T x adsorption of PPCPs, and hydrogen bonding interactions as well as surface complexation might also contributed. These observations suggest that Ti 3 C 2 T x MXene has the potential for use as adsorbent to eliminate aqueous PPCPs, nevertheless, the interference of co-existing metal ions and the stability of adsorbent were also noteworthy.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2025
·
IF 6
Le Li,Hongyu Liu,Xiaoqiang Fan,Zhengfeng Cao,Lining Wu,Xiangyuan Ye
A single Ti 3 C 2 T x is not sufficient to meet the dispersing stability and lubricating performance requirements of lubricating oil in complex working conditions. Environmentally friendly high-performance Ti 3 C 2 T x composite lubricating oil additives combine the advantages of Ti 3 C 2 T x and other materials and have a promising long-term high-efficiency lubricating prospect. In this study, Ti 3 C 2 T x /SiO 2 heterostructures were prepared as lubricant additives to enhance the tribological performance of PAO20. Tribological tests indicate that the addition of 0.15 wt% Ti 3 C 2 T x /SiO 2 heterostructures reduced the average wear volume by 65.9 % at 392 N due to the synergistic effect of Ti 3 C 2 T x and SiO 2 . The excellent lubricating performance of Ti 3 C 2 T x /SiO 2 heterostructures is primarily attributed to the rolling effect of SiO 2 and the dual friction mechanism of Ti 3 C 2 T x /SiO 2 friction film during synergistic friction. The Ti 3 C 2 T x /SiO 2 friction film and SiO 2 enhance the interface load-bearing capacity and anti-friction/wear performance. This structural design of Ti 3 C 2 T x /SiO 2 heterostructures provides a new perspective for the design of Ti 3 C 2 T x composite lubricant additives .
研究领域:
材料科学
·
摩擦学
·
纳米材料
·
表面工程
·
润滑技术
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2025
·
IF 7.5
Baofang Zhang,Ziyu Zengcai,Wenting Lin,Wenjie Gu,Dizhou Lou,Ruixi Luo,Qingwei Meng,Yunhong Pi,Tiejun Wang
Herein, Cu 2 O/Ti 3 C 2 T x @TiO 2 is designed by facile one-step strategy of glucose oxidation–reduction reaction for efficient H 2 production from the photothermal-driven reforming of methanol solution (PTRM). At 210 °C, the high H 2 production rate of 87404.0 μmol g cat −1 h −1 (apparent quantum efficiency of 20.6 % at 550 nm) over Cu 2 O/Ti 3 C 2 T x @TiO 2 under photothermal-driven condition is roughly 4 times that of the single thermal condition. The excellent photothermal H 2 yield activity over Cu 2 O/Ti 3 C 2 T x @TiO 2 is attributed to effectively separate carriers and reduced activation energy due to the synergistic effect of light and heat (55.05 kJ·mol −1 ) comparing to pure thermal condition (88.29 kJ·mol −1 ), which led to achieve low-temperature H 2 evolution at 95 °C. Additionally, this work demonstrates the excellent photothermal stability of Cu 2 O/Ti 3 C 2 T x @TiO 2 under without KOH condition (average rate 2383.2 μmol g cat −1 h −1 in 72 h), and a total turnover number (TON) up to 1373.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yuelin Lu,Jie Bai,Binbin Sun,Nannan Li,Zhenhuai Yang,Hailing Yu,Cong Wang,Cong Gu,Huan Liu,Peng Tang,Qiang Wang
MXene materials exhibit substantial energy storage capabilities owing to their high specific surface areas, tunable interlayer spacings, and excellent electrical conductivities. However, these layers are prone to re-stacking, negatively affecting the energy storage capacity of the material. Herein, through a process involving liquid nitrogen-assisted freeze-drying and subsequent annealing, Ti 3 C 2 T x nanosheets were combined with polyvinyl alcohol (PVA) polymer chains via hydrogen bonding to produce MXene and PVA-derived carbon composite aerogels (MPAs) with microstructures ranging from ordered to disordered arrangements. The incorporation of PVA inhibited nanosheet stacking, and PVA carbonization enhanced the electrical conductivity of the aerogel. The carbonized aerogel (MPA2.0) exhibited a larger specific capacitance along with a more disordered and denser microstructure, thereby accounting for the increased capacitance due to enhanced ion storage in the more structurally disordered carbon nanopores. The optimized MPA aerogel demonstrated a high power density, along with an excellent specific capacitance (MPA2.0 = 348.14 F g −1 , 2 mV s −1 scan rate), and a cycling stability of 92.52 % after 10,000 charge/discharge cycles. Furthermore, the MPA2.0-based supercapacitor obtained an impressive energy density (37.8 Wh kg −1 ) and an exceptionally high power density (1800 W kg −1 ) at a current density of 1 A g −1 . By adjusting the PVA loading, the shrinkage and stress–strain characteristics of the microstructure during freeze-drying and carbonization were altered, and the microstructural orientation of the resulting aerogels was controlled. The increased disorder in the aerogel enhanced its capacitor energy storage ability, providing a new approach for the design of multi-component high-performance hybrid supercapacitor electrodes.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
SENSORS
·
2024
·Vol. 24
·期 20
·6514
·
IF 3.4
Baocang Zhou,Zhihua Zhao,Zhenli Lv,Zhuo Chen,Sibo Kang
The MXene Ti3C2Txwas synthesized using hydrofluoric acid and an improved multilayer method in this study. Subsequently, a Bi2O3/Ti3C2Txcomposite material was produced through hydrothermal synthesis. This composite boasts a unique layered structure, offering a large surface area that provides numerous contact and reaction sites, facilitating the adsorption of ammonia on its surface. The prepared Bi2O3/Ti3C2Tx-based sensor exhibits excellent sensing performance for ammonia gas, including high responsiveness, good repeatability, and rapid response–recovery time. The sensor’s response to 100 ppm ammonia gas is 61%, which is 11.3 times and 1.6 times the response values of the Ti3C2Txgas sensor and Bi2O3gas sensor, with response/recovery times of 61 s/164 s at room temperature, respectively. Additionally, the gas sensitivity mechanism of the Bi2O3/Ti3C2Tx-based sensor was analyzed, and the gas sensing response mechanism was proposed. This study shows that the sensor can effectively enhance the accuracy and precision of ammonia detection at room temperature and has a wide range of application scenarios.
研究领域:
材料科学
·
传感器技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Zhen Wang,Zhi Cheng,Li Xie,Xianliang Hou,Changqing Fang
Ti 3 C 2 T x MXene has been explored as an efficient electromagnetic interference (EMI) shielding material because of its high electrical conductivity , large specific surface area, rich surface defects , and abundant functional groups. Herein, core-shell Fe 3 O 4 @PANI composites were prepared, followed by the preparation of a flexible and lightweight Ti 3 C 2 T x /Fe 3 O 4 @PANI composite film with sandwich intercalation structure by vacuum-assisted filtration, using Ti 3 C 2 T x MXene as a matrix material. The ultrathin composite film with a Ti 3 C 2 T x nanosheets to Fe 3 O 4 @PANI weight ratio of 12:5 reached a maximum EMI shielding effectiveness (SE) value of 58.8 dB at a thickness of only 12.1 μm. This is much higher than the SE of pure conductive Ti 3 C 2 T x films of the same thickness. After adjusting the film thickness by increasing the concentration of Ti 3 C 2 T x , an SE of 62 dB was achieved at a thickness of 16.7 μm. The ultrathin Ti 3 C 2 T x /Fe 3 O 4 @PANI films exhibit potential for application in packaging, wearable electronic equipment, and military fields. Moreover, they provide insight into the preparation of lightweight and progressive electromagnetic shielding materials.
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Yu Wu,Danjiao Zhao,Jidi Zhang,Aiping Lin,Yu Wang,Lei Cao,Shufen Wang,Shixian Xiong,Feng Gu
Additive manufacturing techniques have revolutionized the field of fabricating micro-supercapacitors (MSCs) with a high degree of pattern and geometry flexibility. However, traditional additive manufacturing processes are based on the functionality of microstructural modulation, which is essential for device performance. Herein, Ti3C2Tx MXene was chosen to report a convenient aerosol jet printing (AJP) process for the in situ curling and alignment of MXene nanosheets. The aerosol droplet provides a microscale regime for curling MXene monolayers while their alignment is performed by the as-generated directional stress derived from the quasi-conical fiber array (CFA)-guided parallel droplet flow. Interdigital microelectrodes were further developed with the curled MXene and a satisfying areal capacitance performance has been demonstrated. Importantly, the AJP technique holds promise for revolutionizing additive manufacturing techniques for fabricating future smart microelectronics and devices not only in the microscale but also in the nanoscale.
研究领域:
材料科学
·
纳米技术
·
电子工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mingxue Shi,Liguo Jin,Chaofeng Wang,Congyang Mao,Xiangmei Liu,Zhaoyang Li,Shengli Zhu,Hui Jiang,Zhenduo Cui,Yufeng Zheng,Shuilin Wu
Compared to phototherapy, microwave therapy has emerged as a promising approach for the treatment of deeply tissue-infected osteomyelitis owing to deep penetration ability, precise positioning heating, low damage to normal tissue. However, it is still significant to design materials with efficient microwave thermal conversion. In this paper, capacitor-like structure Ti 3 C 2 T x MXene/CNT is prepared to achieve high microwave thermal conversion efficiencies for safe and efficient microwave therapy through mechanisms associated with polarization and induced electric fields. Ti 3 C 2 T x MXene/CNT have been shown to achieve significant microwave thermal effects at varying thicknesses of tissue barrier and can rapidly increase the temperature in a short period of time, effectively causing 98.80% eradication of Staphylococcus aureus and 99.24% eradication of Escherichia coli within 20 min. Combined with remarkable antimicrobial effect and acceptable biocompatibility, this may provide reference for the safe and effective microwave therapy strategies to treat osteomyelitis.
研究领域:
医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Zhenting Yin,Jingyi Lu,Ningning Hong,Wenhua Cheng,Pengfei Jia,Huijuan Wang,Weizhao Hu,Bibo Wang,Lei Song,Yuan Hu
Flexible polyurethane foam (FPUF) is the most used polyurethane, but the highly flammable characteristic limits its widespread usage. In this work, ZIF-8@Ti 3 C 2 T x was synthesized to reduce the heat and toxic gases of FPUF. Flame-retardant FPUF was characterized by cone calorimeter (Cone), thermogravimetric analysis/fourier-transform infrared spectroscopy (TG-FTIR), tensile and compression tests. Compared with pure FPUF, these results showed that the peak of heat release rate (PHRR), total heat release (THR), CO and HCN of FPUF6 decreased by 46%, 69%, 27% and 43.5%, respectively. Moreover, the tensile and compression strength of FPUF6 demonstrated a 52% and 130% increment, respectively. The superior dual metal catalytical charring-forming effect and physical barrier effect of ZIF-8@Ti 3 C 2 T x were achieved. In summary, a simple and reliable strategy for preparing flame-retardant FPUF with reinforced mechanical and fire safety properties was provided.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）