CHEMICAL ENGINEERING JOURNAL
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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.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Tianchan Jia,Shengbin Cao,Xiaosong Liu,Lei Li,Kai Dong
Traditional power technologies are constrained by size and endurance, whereas nanogenerators offer lightweight, environmentally friendly, and sustainable energy solutions. In this study, an MXene/BaTiO3/PAN composite nanofiber membrane was developed using electrospinning technology. The incorporation of BaTiO3 nanoparticles and two-dimensional MXene flakes significantly enhanced the piezoelectric properties of the PAN matrix, resulting in an output voltage of 6.45 V and a current of 308 nA-approximately four times higher than that of pure PAN. Notably, piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs) were integrated into one single device, addressing the low output and stability issues of traditional PENGs. The integrated device achieved a higher stable output voltage of 12–14 V and retained stable performance over 5000 cycles. Moreover, the MXene component endowed the nanofiber membrane with excellent photothermal properties, achieving a temperature rise of 42 °C under 1 W cm−2 solar irradiation. This demonstrates its potential for human joint photothermal therapy and underscores its value for developing high-performance self-powered sensors and wearable electronic devices.
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DOI
高影响因子
Acta Biomaterialia
·
2022
·
IF 10.633
Yuwei Zheng,Yilang Yan,Liming Lin,Qing He,Huihui Hu,Rui Luo,Dongyi Xian,Jieyi Wu,Yin Shi,Fanpu Zeng,Chuanbin Wu,Guilan Quan,Chao Lu
With the increased emergence and threat of multi-drug resistant microorganisms, MXenes have become not only an emerging class of two-dimensional functional nanomaterials , but also potential nanomedicines (i.e., antimicrobial agents) that deserve further exploration. Very recently, Ti 3 C 2 MXene was observed to offer a unique membrane-disruption effect and superior light-to-heat conversion efficiency, but its antibacterial property remains unsatisfactory due to poor MXene-bacteria interactions, low photothermal therapy efficiency, and occurrence of bacterial rebound in vivo . Herein, the cationic antibiotic ciprofloxacin (Cip) is combined with Ti 3 C 2 MXene, and a hybrid hydrogel was constructed by incorporating Cip-Ti 3 C 2 nanocomposites into the network structure of a Cip-loaded hydrogels to effectively trap and kill bacteria. We found that the Cip-Ti 3 C 2 nanocomposites achieved an impressive in vitro bactericidal efficiency of >99.99999% (7.03 log 10 ) for the inhibition of methicillin-resistant Staphylococcus aureus (MRSA) by combining chemotherapy with photothermal therapy. In an MRSA-induced murine abscess model, the hybrid hydrogel simultaneously achieved high-efficiency sterilization and long-term inhibition effects, avoiding the rebound of bacteria after photothermal therapy, and thus maximized the in vivo therapeutic efficacy of Ti 3 C 2 MXene-based systems. Overall, this work provides a strategy for efficiently combating localized bacterial infection by rationally designing MXene-based hybrid hydrogels. Statement of significance Two-dimensional Ti 3 C 2 MXene was recently regarded as a promising functional nanomaterial, however, its antibacterial applications are limited by the poor MXene-bacteria interactions, low photothermal therapy efficiency, and the occurrence of bacterial rebound in vivo . This work aims to construct a Ti 3 C 2 MXene-based hybrid hydrogel for chemo-photothermal therapy and enhance the antimicrobial performance via a combination of the high-efficiency sterilization of ciprofloxacin-Ti 3 C 2 nanocomposites with the long-term inhibition effect of ciprofloxacin hydrogel. The present study provides an example of efficient MXene-based antimicrobials to treat localized bacterial infection such as methicillin-resistant Staphylococcus aureus (MRSA)-induced skin abscess.
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DOI
PubMed
高影响因子
DESALINATION
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2022
·
IF 11.211
Ruiqi Zhang,Wenjuan Han,Hongjian Jiang,Xiaofeng Wang,Bo Wang,Chuntai Liu,Changyu Shen
Solar vapor generator (SVG) is undoubtedly a sustainable water treatment technology and good candidate to resolve the water shortage. However, the non-degradable polymer based SVG will bring extra environmental risk when they are scrapped. Herein, we fabricate a degradable interfacial solar vapor generator (DISVG) using PBAT monolith with hierarchical porous morphology via in-situ polymerization of PDA and dip-coating of MXene . Contributed to the MXene and PDA's synergetic effects, the DISVG demonstrates promising solar absorbance (up to 97.07 %), superhydrophilicity, and high evaporation efficiency. Consequently, the DISVG exhibit a high evaporation rate of 1.87 kg m −2 h −1 with a solar steam efficiency of 86.19 % under 1 sun irradiation. The DISVG shows excellent salt and oil resistance because of its good hydrophilicity . Moreover, the DISVG possesses excellent purification capability that can reject above 99 % ions in seawater and dyes in sewage . This research demonstrates a sustainable strategy for the fabrication of DISVG with environmentally friendly, highly efficient and well reliable solar vapor generators for seawater desalination and sewage purification.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Yiyuan Shi,Sisi Li,Zhimiao Tian,Xiansen Yang,Yubing Dong,Yaofeng Zhu,Yaqin Fu
The construction of three-dimensional (3D) hierarchically porous nanostructures is an effective microstructural design strategy for the fabrication of lightweight electromagnetic wave (EMW) absorption materials . In this work, 3D hierarchically porous Ti 3 C 2 T x MXene@polyaniline (PANI) hybrids are prepared via a self-assembly process. The as-prepared hybrids possess excellent microwave absorption performance with the minimum reflection loss ( RL min ) of the optimal Ti 3 C 2 T x MXene@PANI hybrid reaching − 53.79 dB at 12.67 GHz with a thickness of 1.33 mm and a loading amount of 10 wt% in paraffin. The light weight and high-efficiency microwave absorption properties of the hybrids result from their 3D hierarchically porous structure and well-matched impedance characteristics, which provide multiple reflection channels and loss mechanisms for incident EMWs. This strategy offers a rational, simple and practical design approach for high-performance MXene-based EMW absorbers.
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DOI
高影响因子
Small Science
·
2021
·Vol. 1
·期 9
·2100021
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IF 0
Xiangyu Meng,Yufeng Sun,Mengzhou Yu,Zhiyu Wang,Jieshan Qiu
Li metal batteries offer the ultimate choice of high-energy power source, but suffer the performance decay and safety risk originated from notorious dendrite problem and infinite volume change of Li metal anode. Herein, it is reported to strengthen the Li metal anode by ultralight but highly robust MXene aerogels (ULRMA) with build-in strain-resistant and molecular-level lithiophilic properties. A hydrogen-bonding crosslinking strategy is developed for rapidly assembling 2D MXene to ULRMA at ambient conditions with less sacrifice of intrinsic properties of MXene. The ULRMA with an ultralow density below 10 mg cm −3 are favorable to maximize the merit of Li metal in gravimetric energy density while offering exceptional stability of porous frameworks against mechanical strain of long-term Li plating/stripping. The lithiophilic architecture with high conductivity and hierarchical porosity further largely reduces the potential polarization and guides the pattern of Li deposition. Uptaking Li metal into ULRMA leads to a stable Li metal anode with an ultralong lifetime of 1600 h with a high-rate response up to 20 mA cm −2 and high coulombic efficiency. It yields a highly robust Li metal anode with high effectiveness in engineering stable Li-ion and Li–S batteries even paring with commercial LiFePO 4 or sulfur cathode without nanostructuring.
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DOI
RARE METALS
·
2024
·Vol. 43
·期 9
·4387-4400
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IF 9.6
Xia Ao,Zheng Jia-Guang,Zhang Qing-Bo,Shu Yu-Gang,Yan Cheng-Guo,Zhang Liu-Ting,Tao Zhan-Liang,Chen Li-Xin
The facile construction of nanoscale NbH x supported by Ti 3 C 2 (NbH x @Ti 3 C 2 ) was achieved using facile ball milling strategy to improve the hydrogen desorption kinetics and reversibility of magnesium borohydride (Mg(BH 4 ) 2 ). The doping of 30 wt% NbH x @Ti 3 C 2 catalyst reduced the onset dehydrogenation temperature of Mg(BH 4 ) 2 to 71.2 °C. Additionally, the Mg(BH 4 ) 2 + 30NbH x @Ti 3 C 2 composite achieved remarkable hydrogen release of over 9.2 wt% at a temperature as low as 230 °C, indicating unexpected dehydrogenation kinetics. Moreover, the reversibility of NbH x @Ti 3 C 2 doped Mg(BH 4 ) 2 was retained to more than 4.2 wt% after four cycles, which was increased by 68% compared to that of undoped Mg(BH 4 ) 2 . The strong catalysis of NbH x @Ti 3 C 2 catalyst could be attributed to the synergistic effect of NbH x and Ti 3 C 2 in hydrogen spillover and diffusion. NbH x acted as a “hydrogen pump” for effective hydrogen spillover, while Ti 3 C 2 created numerous diffusion channels for hydrogen dissolution and provided the active catalytic site to facilitate the re/dehydrogenation of Mg(BH 4 ) 2 . Graphical abstract
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高影响因子
iScience
·
2023
·
IF 5.8
Guohong Wang,Minghang Li,Jianxi Liu,Fang Ye,Laifei Cheng,Xiaomeng Fan,Xingmin Liu,Ralf Riedel
MXenes have been proven to be outstanding lossy phase of advanced electromagnetic interference (EMI) shielding materials. However, their poor tolerance to oxygen and water results in fast degradation of the pristine two-dimensional (2D) nanostructure and fading of the functional performance. Herein, in this research, natural antioxidants (e.g., melatonin, tea polyphenols, and phytic acid) were employed to protect the Ti 3 C 2 T x MXene from its degradation in order to achieve a long-term stability of the EMI shielding performance. The results showed that the synthesized composites comprised of antioxidants and Ti 3 C 2 T x exhibited a decelerating degradation rate resulting in an improved EMI shielding effective (SE) stability. The antioxidation mechanism of the applied antioxidants is discussed with respect to the nanostructure evolution of the Ti 3 C 2 T x MXene. This work contributes to the basic foundations for the further development of advanced MXenes for stable applications in the EM field.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yu Fang,Yang Cao,Bihui Tan,Qianlin Chen
Solar energy can be used as “green” energy by photocatalysis for the nitrogen fixation under the atmospheric conditions compared with the traditional energy-intensive industrial production of ammonia. However, the complex kinetics and high reaction barriers greatly hinder the development of the photocatalytic N2 reduction reaction. Herein, a BiOBr/MXene-Ti3C2 composite catalyst is prepared by the simple electrostatic adsorption and self-assembly method. The as-prepared 10 wt % BiOBr/Ti3C2 exhibits the best performance for N2 fixation to NH3 by photocatalysis. The evolution rate of NH3 is up to 234.6 μmol·g–1·h–1, which is approximately 48.8 times and 52.4 times higher than those of pure BiOBr and Ti3C2, respectively. It is found that the designed double vacancies of oxygen and titanium for BiOBr/Ti3C2 composites, with the availability of localized electrons, have the ability to adsorb and activate N2, which can be efficiently reduced to NH3 by the interfacial electrons transferred from the excited BiOBr/Ti3C2 composite. In addition, the results of in situ Fourier transform infrared show the generation of NxHy species by the continuous protonation processes. Moreover, titanium vacancy (VTi) induces a strong absorption energy for nitrogen atoms on the surface of BiOBr/Ti3C2 according to the density functional theory calculations. In particular, the P-electron feedback caused by VTi could effectively promote the weakening of the N≡N triple bond and elongate the N2 bond length by ∼31.6%. This work might provide new insights into the synergistic effect of double defects and inspiration for the rational design of catalysts by defect engineering in the field of catalytic synthesis of ammonia.
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高影响因子
INORGANIC CHEMISTRY
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2020
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IF 4.825
Guoliang Zhao,Xin Wang,Chen Xu
NH3, as one of the most massively used chemical products in the world, not only serves as the main nitrogen source of chemical fertilizers but also is considered as a promising renewable energy source. Most ammonia in industry is produced by the Haber–Bosch process under extremely high temperature and pressure conditions, which is intensively energy consuming and environmentally unfriendly. Electrocatalytic nitrogen reduction reaction (NRR) has been regarded as a promising way to produce NH3 under ambient conditions in recent years, but the research for efficient earth-abundant electrocatalysts is still highly limited. In this work, different TiO2 phases (anatase and rutile)/carbon nanocomposites with a sandwich architecture are produced by annealing MXene at different temperatures, which shows excellent electrocatalytic NRR performance. In 0.1 M Na2SO4, anatase TiO2/C composites show better NRR performance than the rutile ones, which achieve a large NH3 yield of 14.0 μg h–1 cm–2, a high Faradaic efficiency of 13.3% at −0.2 V vs a reversible hydrogen electrode, and a high electrochemical stability. The sandwich architecture of anatase TiO2 nanoparticles well-dispersed on the surface of carbon layers could increase the conductivity of TiO2 and the exposure of active sites, which could explain the improved NRR activity of anatase TiO2/C composites compared with previous work. Density functional theory calculations suggest that the energy barrier of most steps for the surface of anatase TiO2 is relatively lower than that of rutile TiO2, which could explain the better electrocatalytic NRR performance for anatase TiO2/C composites compared with the rutile ones.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Guangwen Jia,Ao Zheng,Xiao Wang,Lu Zhang,Ling Li,Chenxing Li,Yan Zhang,Lingyan Cao
The evaporation of water occurs ubiquitously on earth. Hence, smart materials that can directly convert signals generated via water stimulation into mechanical motion have attracted wide attention. However, it is still a challenge to develop novel functional materials with fast response, large scale deformation, and long-term stability for moisture-gradient actuators. Here, a flexible, conductive, layer-structured homogenous Ti 3 C 2 T X MXene-graphene oxide (MGO) film-based moisture-driven actuator and humidity sensor were fabricated. The oxygen groups and d-spacing could be effectively adjusted by MXene/GO composition ratio, thereby tuning the actuation performance. MGO 3 (MXene/GO = 3) displayed a large bending angle, and reversible deformation. And the bending speed of MGO 3 is up to 32°s −1 . Furthermore, MGO 3 actuation displayed long-term stability via suppression of MXene oxidation by the introduction of GO and showed good cycling stability. MGO 3 actuators are constructed, which could mimic the blooming of flower, lifting and carrying objects, and be used as a non-contact control switch. In addition, MGO 3 showed a linear sensitive response to humidity and excellent biocompatibility which make it suitable for respiratory monitoring. This work demonstrated that flexible, biocompatibility and conductive MGO films have broad application prospects in the fields of smart actuators, sensing devices, and biology and health care.
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DOI
高影响因子
Materials Today Communications
·
2022
·
IF 3.662
Wei Qiang,Xiao Qu,Chuntao Chen,Lei Zhang,Dongping Sun
As a photocatalyst , titanium dioxide (TiO 2 ) suffers from the wide band gap and the quick carrier recombination process, thus leading to the inefficient use of solar energy and poor catalytic performance. Herein, in this work, TiO 2 /Ti 3 C 2 heterojunctions are designed to overcome these shortcomings via growing TiO 2 in situ on the titanium element of Ti 3 C 2 MXene . The TiO 2 /Ti 3 C 2 heterojunctions not only broaden the range of light absorption , but also hugely extend the lifetime of photogenerated carriers. Besides, the anatase TiO 2 with exposed (001) facets further enhances the catalytic properties. After optimizing the amount of TiO 2 /Ti 3 C 2 heterojunctions by controlling reaction time, 20 mg catalysts can degrade 97.6% of 30 mL tetracycline solution (15 mg/L) in 90 min under visible light . Even after five cycles, the degradation ability of TiO 2 /Ti 3 C 2 only changes from 97.6% to 94.3%. This paper offers another perspective on the synthesis of efficient and stable photocatalysts.
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高影响因子
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