Journal of Materials Research and Technology-JMR&T
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2022
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IF 6.267
Yanan Deng,Yuanyuan Shen,Yao Du,Takashi Goto,Jianfeng Zhang
The development of high-performance electrode materials with a far-from-enough energy density has still been crucial for the real applications of supercapacitor technology. In this paper, the N-doped and derivatized-carbon-intercalated Ti 3 C 2 T x , abbreviated as N–Ti 3 C 2 T x /C, was firstly fabricated using ZIF-67 as an intermediate precursor. Then N–Ti 3 C 2 T x /C/CuS was prepared by further intercalation with CuS nanoparticles through a room-temperature-in-situ-reaction route. The doped pyridine N and pyrrolic N, together with derivatized carbon, optimized the surface charge distribution of Ti 3 C 2 T x with increased active sites. In addition, CuS nanoparticles were observed distributed on the surface and between layers of single/multi-layered two-dimensional N–Ti 3 C 2 T x /C nanosheets, forming a heterogeneous three-dimensional structure. Therefore, the specific capacitance of the N–Ti 3 C 2 T x /C/CuS composite at a current density of 1 A g −1 reached 1205.8 F g −1 , about 5 times that of N–Ti 3 C 2 T x /C and 2 times of CuS, also much higher than other composite reported in the literature. The energy density and power density of N–Ti 3 C 2 T x /C/CuS, as a symmetric supercapacitor electrode, are 77.22 Wh·kg −1 and 649.54 W kg −1 , respectively. More importantly, N–Ti 3 C 2 T x /C/CuS has an excellent stability after 3000 cycles, surpassing that of similar electrode materials reported in literature. This study opens a new direction for enhancing the energy density of supercapacitors with modified electrode materials through a MOF-mediated strategy.
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JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Chao Xie,Pengyu Zhang,Yi Hu,Dandan Yang,Yahui Li,Yulian Li,Jiandong Lu,Zijian Wu,Junyong He,Peidong Hong,Lingtao Kong
Engineering a catalytic and hydrophilic membrane integrated system holds significant environmental implications for fouling-resistant and efficient water purification. The heterojunction Cu 2 O/Ti 3 C 2 T x was successfully synthesized by leveraging the specific interactions between the terminal active groups of MXene and Cu 2 O, effectively addressing the limitations of the catalytic membrane’s performance due to low-dose doping, and enhancing its catalytic activity and hydrophilicity. Here we report a ultra-low Cu(I) loading that achieves ultra-high fouling-resistance and decontamination performance in a self-cleaning Cu 2 O/Ti 3 C 2 T x @PVDF catalytic membrane integrated system. The representative membrane incorporating 1.0 wt% of Cu 2 O/Ti 3 C 2 T x (denoted as M-1.0) as a PMS activator demonstrated the successful performance of long-lasting antifouling and sustainable decontamination across a wide pH range in complex water matrices. The intrinsic Cu(I)/Cu(II) redox cycles was found to be crucial for driving PMS activation and oxidative conversion. Moreover, the Cu 2 O/Ti 3 C 2 T x -functionalized membrane demonstrated enhanced hydrophilicity and fouling-resistance compared to the pristine PVDF membrane. We further investigate the transformation and ecotoxicity of tetrabromobisphenol A and its intermediates within the M-1.0/PMS membrane system, providing valuable insights into the evolutionary dynamics of TBBPA. This work offers innovative perspectives for advancing environmental purification, membrane self-cleaning, and resources utilization technologies.
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FOOD CHEMISTRY
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2022
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IF 9.231
Wei Zhong,Jin Zou,Qi Yu,Yansha Gao,Fengli Qu,Shuwu Liu,Hui Zhou,Limin Lu
The development of effective electrochemical methods for the determination of pesticide residues is highly desirable for food safety requirements. Herein, a novel electrochemical sensing strategy for indirect detection of thiabendazole (TBZ) was achieved by monitoring the anodic stripping peak signal change of media Cu 2+ induced by a significant activity difference between active Cu 2+ and inactive Cu 2+ -TBZ complexes. In this sensing system, a heterostructured Ti 3 C 2 T x -TiO 2 composite synthesized via a simple in-situ-oxidization strategy is used as the electrode material to boost the anodic stripping peak signal. After optimizing various conditions, the developed sensor presents satisfactory analytical performance for TBZ assay with a linear range from 0.3 to 100.0 nM and a limit of detection as low as 0.1 nM (S/N = 3). Furthermore, the proposed sensing platform also exhibits outstanding anti-interference, repeatability, and stability, which is effective for the determination of TBZ in fruit and water samples.
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Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-15
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IF 12.264
Liu Siyang,Hu Fangyuan,Shao Wenlong,Zhang Wenshu,Zhang Tianpeng,Song Ce,Yao Man,Huang Hao,Jian Xigao
2D MXenes are attractive for energy storage applications because of their high electronic conductivity. However, it is still highly challenging for improving the sluggish sodium (Na)-ion transport kinetics within the MXenes interlayers. Herein, a novel nitrogen-doped Ti 3 C 2 T x MXene was synthesized by introducing the in situ polymeric sodium dicyanamide (Na-dca) to tune the complex terminations and then utilized as intercalation-type pseudocapacitive anode of Na-ion capacitors (NICs). The Na-dca can intercalate into the interlayers of Ti 3 C 2 T x nanosheets and simultaneously form sodium tricyanomelaminate (Na 3 TCM) by the catalyst-free trimerization. The as-prepared Ti 3 C 2 T x /Na 3 TCM exhibits a high N-doping of 5.6 at.% in the form of strong Ti–N bonding and stabilized triazine ring structure. Consequently, coupling Ti 3 C 2 T x /Na 3 TCM anode with different mass of activated carbon cathodes, the asymmetric MXene//carbon NICs are assembled. It is able to deliver high energy density (97.6 Wh kg −1 ), high power output (16.5 kW kg −1 ), and excellent cycling stability (≈ 82.6% capacitance retention after 8000 cycles).
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COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2022
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IF 9.463
Bihe Yuan,Congrui Qi,Hongji Tao,Runxiao Zhang,Juanjuan Zhou,Huidong Zhao,Yue Chen,Quan Fang,Fei Xiao
Multilayer porous reduced graphene oxide (RGO)-Ti 3 C 2 T X composite papers were fabricated by simple evaporation-assisted self-assembly and hydrazine hydrate vapor reduction. Ti 3 C 2 T X is embedded between RGO lamellaes through hydrogen bonds. The chemical structure and morphology of RGO-Ti 3 C 2 T X are investigated by X-ray diffraction, Fourier transform infrared spectra and scanning electron microscopy. The composite papers with excellent electromagnetic interference (EMI) shielding efficiency (SE) can be obtained by controlling the loading amount of Ti 3 C 2 T X and the mass of GO-Ti 3 C 2 T X suspension. When the Ti 3 C 2 T X content is 3 wt% and the thickness of composite is 1.46 mm, the obtained RGO composite paper presents a total EMI SE of 45.4 dB in the 8.2–12.4 GHz (X-band). Simultaneously, the RGO-Ti 3 C 2 T X composite papers maintain fire-exposure stability. The ingenious combination of fire-resistant skeleton structure and porous conductive framework provides an effective method for fabricating RGO-based superb EMI shielding materials applied in the elevated temperature field.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Weiwei Wang,Rui Huang,He Peng,Ruiting Hu,Ling Ran,Yu Tao,Li Yani,Jun Yan
The emerging aqueous Zn-ion batteries (ZIBs) with their low price and inherent safety are showing strong competitiveness in the energy storage field. In this work, layer-by-layer stacked amorphous V 2 O 5 @Ti 3 C 2 T x heterostructures anchored on three-dimensional carbon cloth (3D CC), synthesized by annealing process and subsequent in-situ electrochemical induction, are reported as high capacity and stable cathode for ZIBs . In this composite cathode, amorphous V 2 O 5 @Ti 3 C 2 T x synergistic heterostructure provides isotropic Zn 2+ migration channels and rapid electron transfer kinetics, while the 3D CC substrate can ensure that the bulk phase in the electrode material is also utilized to maximize the synergistic effect. As a result, the CC/a-V 2 O 5 @Ti 3 C 2 Ti x cathode achieves a high specific capacity of 567 mAh/g at 0.1 A/g, a satisfactory rate performance of 213 mAh/g at 10 A/g, together with a long cycle life of 96.2 % capacity retention after 2000 cycles. Ex-situ characterizations show that the CC/a-V 2 O 5 @Ti 3 C 2 T x cathode undergoes a highly reversible Zn 2+ /H + co-intercalation/deintercalation mechanism during the discharge/charging process. In addition, based on the CC/a-V 2 O 5 @Ti 3 C 2 T x cathode, the assembled flexible ZIB can operate properly under different bending degrees, showing its practicality in flexible devices. This work provides insight into the rational design of cathode materials with high Zn-storage performance.
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ANALYTICA CHIMICA ACTA
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2024
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IF 5.7
Gangbing Zhu,Jieling Hou,Juan Xu,Jing Li,Chenxu Wang,Yinhui Yi
Background Heavy metal pollution poses a serious threat to the ecological environment. Mercury ion (Hg 2+ ) is a class of highly toxic heavy metal ions, which is bioaccumulative, difficult to breakdown, and has a significant affinity with sulfur and thiol-containing proteins, which seriously affects environmental safety and human health. Nanozyme-based sensing methods are expected to be used to detect toxic heavy metal ions. However, the application of precious metal nanozymes to develop portable sensors with simplicity, high stability, and high sensitivity has not been explored to a large extent. Results In this paper, based on MXene's unique adsorption capacity for certain precious metal ions, PtNPs/Ti 3 C 2 T X NR composites were successfully prepared by in-situ growth of Pt nanoparticles (PtNPs) on the surface of Ti 3 C 2 T X MXene nanoribbons (Ti 3 C 2 T X NR) using the hydrothermal technique. Experimental data revealed PtNPs/Ti 3 C 2 T X NR exhibited superior peroxidase-like activity, attributed to the synergistic effect of well-dispersed ultrasmall PtNPs and electron transfer effect. Hg 2+ can significantly inhibit enzyme-like activity of PtNPs/Ti 3 C 2 T X NR due to specific capture and partial in-situ reduction of PtNPs, so a colorimetric sensor was constructed for ultra-trace detection of Hg 2+ with a linear range of 0.2 nM and 400 nM. Furthermore, using the portable detecting capabilities of smartphones and hydrogel, a smartphone-assisted hydrogel sensing platform of Hg 2+ was constructed. Notably, the two-mode sensing platforms exhibited outstanding detection performance with LOD values as low as 15 pM (colorimetric) and 26 pM (hydrogel), respectively, superior to recently reported nanozyme-based Hg 2+ sensors. Significance Compared with other methods, the PtNPs/Ti 3 C 2 T X NR-based dual-mode sensor designed in this paper has superior sensitivity, high selectivity, simple operation and portability. In particular, the dual-output sensing strategy enables self-confirmation of detection results, greatly improving the reliability of the sensor, and is expected to be used for the on-site determination of trace mercury ions.
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MATERIALS & DESIGN
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2024
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IF 7.6
Zhihua Zhao,Zijie Su,Zhenli Lv,Pu Shi
The potential applications of wearable sensors in health monitoring, micro-environment detection, and advanced soft electronic noses have attracted widespread attention. However, due to the inherent limitations of traditional organic flexible substrates, simultaneously achieving excellent flexibility, high sensitivity, robustness, and breathability remains a significant challenge. Herein, using the electrospinning method, a flexible TPU substrate film was prepared, and Bi 2 S 3 /Ti 3 C 2 T x nanocomposite materials were synthesized through a simple one-step hydrothermal method. Au nanoparticles were attached to the surface of the composite material using sodium borohydride, and finally, the surface impregnation method was used to successfully prepare the Au-Bi 2 S 3 /Ti 3 C 2 T x -TPU flexible electrospun mat. The as-prepared sensor demonstrated an outstanding response of 154 % to 100 ppm NH 3 at room temperature, coupled with high selectivity, repeatability, and long-term stability. The strain properties of the sensor were also evaluated, showcasing its potential for human motion and physiological feature detection, such as breathing, swallowing, and limb movements. The study’s findings indicated that the Au-Bi 2 S 3 /Ti 3 C 2 T x -TPU electrospun mat sensor has promising applications in flexible electronics, wearable environmental monitoring devices, and human healthy monitoring.
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JOURNAL OF MEMBRANE SCIENCE
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2025
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IF 9
Qiao Liu,Bingshan Tao,Nong Xu,Qing Wang,Long Fan,Yinhua Wan
Two-dimensional (2D) MXene membranes have attracted significant attention for their high efficiency in molecule separation. In this study, an interlaminar in-situ growth strategy was employed to incorporate TpHz into the adjacent layer space between the Ti 3 C 2 T x nanosheets of the 2D Ti 3 C 2 T x membrane. In the typical synthesis process, due to the hydrophilic nature of Ti 3 C 2 T x , the aqueous phase monomer diffuses through the Ti 3 C 2 T x layers, reacts with the organic phase monomer in the top-surface and generate TpHz in-situ . Gradually, TpHz grows into the interlaminar space of the Ti 3 C 2 T x nanosheets and the interior of the membrane. Owing to the charge transfer interaction existing between the TpHz and Ti 3 C 2 T x nanosheets, the adjacent layer space between the Ti 3 C 2 T x nanosheets is broadened without compromising the structural stability of the composite membranes. Accordingly, the TpHz/Ti 3 C 2 T x composite membrane (TTCM) exhibit highly efficient molecule sieving properties and excellent structural stability, with a high pure water permeance of 986.5 L m −2 h −1 ·bar −1 and a rejection rate of over 95.0 % for anionic organic dyes. Additionally, the TpHz/Ti 3 C 2 T x layer, with the thickness of only 160 nm, in the TTCM could withstand 80 h of water and solution flushing at a flow rate of 40 L min −1 in cross-flow filtration tests, maintaining stable solution permeance of 448 L m −2 h −1 ·bar −1 and rejection rates of 95.3 % demonstrating its high structural stability and potential for expanding industrial application in molecule sieving processes.
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Analytical Methods
·
2024
·Vol. 16
·期 24
·3867-3877
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IF 2.7
Xin Yao,Liyu Yang,Siyi Yang,Jinhui Shen,Danqun Huo,Huanbao Fa,Changjun Hou,Mei Yang
A Ti3C2Tx/MoS2/MWCNT@rGONR nanocomposite was prepared for the first time for building a sensitive electrochemical aptasening platform to simultaneously detect kanamycin (Kana) and chloramphenicol (Cap). Owing to their accordion-like structure, rich surface groups, and high charge mobility, Ti3C2Tx/MoS2/MWCNT@rGONR composites provided a spacious covalent immobilization surface and a better electrochemical aptasensing platform. The aptamers of Kana and Cap used in sensors enhance the selectivity. Furthermore, TiP, an ion exchanger, was used for loading more different metal ions functioning as labels to form a sandwich-type sensor together with Ti3C2Tx/MoS2/MWCNT@rGONR, improving the electrochemical sensitivity and obtaining a highly distinguishable signal readout. Under the optimized conditions, the sensor has good detection limits of 0.135 nmol L−1 and 0.173 nmol L−1 for Kana and Cap, respectively, at the same linearity concentration of 0.5–2500 nmol L−1. Finally, it was successfully applied for detection in milk and fish meat, and the results were compared with the standard method HPLC, indicating its great potential for food safety monitoring.
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ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Enpu Tan,Yu Liu,Chunyan Hu,Zhijia Zhu,Baojiang Liu
Moisture-enabled electricity generator (MEG) technology converts energy from the environment into green electricity by exploiting the interaction between atmospheric moisture and hydrophilic materials and has the advantages of a simple device structure, small geographical and temporal constraints, and environmental friendliness; therefore, it has great application value in serving as a power source for portable electronic devices. However, the high output performance of most MEG devices is dependent on high ambient relative humidity (RH), and current MEG technologies tend to be poorly flexible and lack wearability, which severely pose a barrier to their practical utilization. Here, we have developed a high-performance bilayer MEG with exceptional environmental adaptability and stretchability. By rationally combining Ti3C2Tx MXene-loaded cotton knitted fabrics (MC) and a stretchable double-network ionic hydrogel (IH) to form the MXene/cotton-ionic hydrogel MEG (MCIH-MEG), the MCIH-MEG with 230% stretchable capacity can continuously provide an open-circuit voltage (Voc) of 0.5 V and a short-circuit current (Isc) of 50 μA, which stem from the continuous water evaporation within the device and fast capillary water flow on MXene nanosheets, as well as redox reactions at the electrodes, which can achieve good electrical performance across a wide range of temperatures (0–80 °C) and RH levels (20–95%). Due to its flexibility, stable electrical output, and sensitivity to external stimuli, MCIH-MEG can be employed in the fabrication of self-powered sensors to detect simple weight changes or even complex gesture changes and in the construction of self-powered smart masks for respiratory monitoring.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Haojie Zeng,Qi Wang,Dingyu Xing,Jiajia Yuan,Feiyun Sun
To solve the freshwater dilemma, photothermal membrane distillation (PMD) has become a promising and sustainable method for desalination and wastewater purification. Ti 3 C 2 T x has attracted much attention in the field of Janus PMD membrane preparation due to its hydrophilic surface and high photothermal conversion efficiency. However, the shortcomings of easy stacking and surface light reflection limit its application. In this work, electrostatic adsorption self-assembly between Ti 3 C 2 T x and UiO-66-NH 2 by pH adjusting is designed, and the Ag-modified Ti 3 C 2 T x aims to significantly improve the photothermal conversion efficiency-Ag@Ti 3 C 2 T x /UiO-66-NH 2 membrane. Compared to the origin Ti 3 C 2 T x membrane, the photothermal layer containing UiO-66-NH 2 contributes to the unimpeded transport of water, and this 3D photothermal layer structure can maximize the capture and absorption of light, which contributes to enhanced high light absorption, photothermal conversion ability and more efficient mass transfer. Thus, a consistently high vapor flux of 1.13 kg/m 2 h and photothermal efficiency over 77.3 % were synchronously obtained, under one solar irradiation. Specifically, Ag@Ti 3 C 2 T x /UiO-66-NH 2 membrane meanwhile exhibits commendable water permeate production and high stability in anti-scaling tests, as well as reliable physical stability, which offers great application potential in PMD process. Our work provides a novel strategy for constructing PMD membrane with stably enhanced mass transfer and photothermal properties to satisfy real application.
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危险品化学品经营许可证（带存储）