INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Jingjun Liu,Haiping Zhou,Jiajie Fan,Quanjun Xiang
With photoconductor being transferred and separated, interface contact plays a crucial role in developing composites photocatalyst . In the present work, 2D crystalline g-C 3 N 4 (called as CCN) with 2D TiO 2 nanosheets (called as TO) obtained in situ oxidized single-layered Ti 3 C 2 T x MXene is designed by an electrostatic self-assembly technology. This CCN/TO nanosheets system with a few TiO 2 nanosheets distributed to the surface is not only prolonging lifetime of photoelectron but also stimulating photogenerated carriers transferred in contact interface. The electron transfer mechanism of CCN/TO is further proved by Pt photo-deposition method. Therein, the optimal CCN-TO-0.6 exhibits excellent performance of H 2 generation compared with single photocatalyst of CCN. The result shows that the crystalline g-C 3 N 4 photocatalysts introduced TiO 2 with interfacial effect favorably reduce H + to H 2 and enhance photocatalytic activity .
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 15
·2110636
·
IF 18.808
Xiao-Peng Li,Xiaofeng Li,Heguo Li,Yue Zhao,Jing Wu,Shouke Yan,Zhong-Zhen Yu
Although many solar-driven water evaporators are developed for solar steam generation, most solarthermal energy conversion materials cannot be used repeatedly for constructing solarthermal water evaporators with variable shapes and patternable surfaces. Herein, reshapable Ti 3 C 2 T x MXene/graphene oxide (GO)/polyaniline (PANI) (MGP) hybrids with variable shapes and patternable surfaces are fabricated by PANI-assisted assembly of GO and MXene for efficient solar-driven purifications of both seawater and wastewater. The variable shapes, patternable surfaces, and reusability of the plastic MGP hybrids are attributed to the strong interactions of PANI with both GO and MXene. Benefiting from the excellent solarthermal energy conversion of hydrophilic GO and MXene, the variable shapes and patternable surfaces of the MGP, and the reduced water vaporization enthalpy, the patternable MGP evaporators with flat and concave pyramid surfaces exhibit average water evaporation rates of as high as 2.89 and 3.30 kg m −2 h −1 under 1-sun irradiation, respectively. When the plastic MGP is molded to a flower-shaped evaporator, an outstanding evaporation rate of ≈3.94 kg m −2 h −1 with an exceptional evaporation efficiency of ≈135.6% is achieved under 1-sun irradiation. The reusable MGP evaporators are highly efficient in generating clean water from both seawater and wastewater with satisfactory ion rejection rates of nearly 100%.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Jingwen Dong,Shilu Luo,Senpeng Ning,Gui Yang,Duo Pan,Youxin Ji,Yuezhan Feng,Fengmei Su,Chuntai Liu
Stretchability and multifunctional heating abilities are highly desired for wearable electromagnetic interference (EMI) shielding fabrics to tackle the growing electromagnetic pollution for special crowd, such as pregnant women. Herein, we fabricated stretchable MXene-coated thermoplastic polyurethane (TPU) fabrics by simple uniaxial prestretching and spraying methods. The obtained unique wrinkled structure endowed the film with effective strain-invariant electrical conductivity and EMI shielding properties. Specifically, the prepared stretchable film with an extremely low MXene loading (0.417 mg cm–2) exhibited a stable EMI shielding effectiveness of approximately 30 dB under 50% tensile strain and durability during stretching and bending cycles. More importantly, owing to the high electrical conductivity and localized surface plasmon resonance (LSPR) effect of the MXene layer, the stretchable fabrics exhibited excellent Joule heating (up to 104 °C at a voltage of 5 V) and superior photothermal conversion abilities. Moreover, the unique wrinkled MXene-coating layer not only endows the fabrics with stretchable heat abilities but also enhances the photothermal conversion performance by increasing the light absorption area and travel path. We believe that this study offers a novel strategy for the versatile design of stretchable and multifunctional wearable shielding fabrics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Yuxuan Zhang,Zhilin Zhao,Chunyan Luo,Xinming Wu,Weixing Chen
Interlayer ion modification of MXene is one of the effective ways to improve the pseudocapacitance performance. However, the origin of electrochemical capacitance mechanism still remains elusive due to the effect of different kinds of ion interlayer modification. In this work, interlayer modification of MXene (Ti 3 C 2 Cl 2 ) with inorganic ions (NaCl) and organic macromolecular ions (cetyl trimethyl ammonium bromide cation, CTAB) were carried out by ion ultrasonic intercalation and the electrochemical capacitance mechanism was investigated. It was found that MXene- CTAB has higher specific capacitance (258.28F g −1 Vs 225.55F g −1 ) and better cycle stability (93% retention Vs 85% retention after 3000 cycles) than MXene-NaCl. Such a large difference in electrochemical energy storage performance is mainly due to two points : (1) Organic macromolecular CTAB can effectively expand the layer spacing of MXene, which is conducive to the storage of electrolyte ions. (2) Compared with inorganic ions, organic macromolecular ions not only have redox reaction with interlayer ions of MXene, but also can adsorb counter ions in the electrolyte, thus providing additional pseudocapacitance. This work opens up a new way for the development of high-performance MXene based electrode materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
·
2021
·Vol. 19
·期 1
·1-10
·
IF 10.435
Zhu Yi-Cheng,Cai Biao,Jiang Quan,Zhang Yuan,Sha Jianjun,Xie Shaowei
Background The ratio of fPSA/tPSA in the "grey zone" of tPSA with the concentration range between 4 ng/ml and 10 ng/ml is significant for diagnosis of prostate cancer, and highly efficiency quantification of the ratio of fPSA/tPSA remain elusive mainly because of their extremely low concentration in patients' peripheral blood with high biosample complexity. Methods We presented an interdigitated spiral-based MXene-assisted organic electrochemical transistors (isMOECTs) biosensor for highly sensitive determination of fPSA/tPSA. The combination of MXene and the interdigitated multiple spiral architecture synergistically assisted the amplification of amperometric signal of biosensor with dual functionalizations of anti-tPSA and anti-fPSA. Results The ultrasensitivity of the biosensor was enhanced by tunable multiple spiral architecture and MXene nanomaterials; and the sensor exhibited improved detection limit of tPSA and fPSA down to 0.01 pg/ml and acceptable performance of selectivity, repeatability and stability. Moreover, the isMOECTs displayed area under the curve (AUC) value of 0.8138, confirming the potential applications of isMOECTs in clinics. Conclusions The merits of isMOECTs biosensor demonstrated the reliability of MXene-assisted organic electrochemical transistor biosensor with multiple interdigitated spiral for ultrasensitive quantification of fPSA/tPSA, suggesting potential current and future point-of-care testing applications. Graphical Abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CARBON
·
2021
·
IF 9.594
Pengfei Tang,Bo Yang,Rui Li,Yunchuang Wang,Xiaodong Li,Guangcheng Yang
Achieving higher energy storage and controllable energy release processes is the major research goal in solid propellants . Combustion catalysts are applied to modify the energy release behavior of solid propellants but at the expense of lowering the total energy density of the propellants owing to their non-energetic feature. Here, with ammonium perchlorate (AP) based propellant as proof-of-concept material, we demonstrate a reactive combustion catalyst strategy based on the clever use of the novel structure of Ti 3 C 2 MXene , including appropriate reactivity, high energy storage, and large specific surface area. It is found that the Ti 3 C 2 MXene could first react with AP as fuel, releasing large amount of heat and in-situ generating TiO x /C nanosheets . The resulting TiO x /C nanosheets can further catalyze the thermal decomposition of AP by accelerating both electron and proton transfer during AP decomposition. As expected, the Ti 3 C 2 MXene not only improves the pyrolysis reaction kinetics of AP based composites, but also increases the energy output of the propellants. The development of reactive catalysts with excellent catalytic activity and increased energy release provides a new strategy for the design of solid propellants.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Jie Yang,Liyuan Liu,Di Zhang,Hongli Zhang,Jianhua Ma,Jiaojiao Zheng,Chen Wang
Accompanying the rapid growth of wearable electronics, flexible pressure sensors have received great interest due to their promising application in health monitoring, human-machine interfaces, and intelligent robotics. The high sensitivity over a wide responsive range, integrated with excellent repeatability, is a crucial requirement for the fabrication of reliable pressure sensors for various wearable scenes. In this work, we developed a highly sensitive and long-life flexible pressure sensor by constructing surficial microarrayed architecture polydimethylsiloxane (PDMS) film as a substrate and Ti3C2TX MXene/bacterial cellulose (BC) hybrid as an active sensing layer. The specific surficial morphology of PDMS couples with nanointercalated structure of Ti3C2Tx MXene/BC can effectively improve the sensitivity through controlling the stress distribution and layer spacing under different levels of pressure loading. In addition, abundant spontaneous hydrogen bonds between BC and Ti3C2Tx MXene nanosheets endow the MXene coating with highly adhesive strength on the PDMS surface; hence, the cyclic stability of the pressure sensor is greatly boosted. As a result, the obtained MXene/BC/PDMS (MBP) pressure sensor delivers high sensitivity (528.87 kPa–1), fast response/recovery time (45 ms/29 ms), low detection limit (0.6 Pa), and outstanding repeatability of up to 8000 cycles. Those excellent sensing properties of the MBP sensor allow it to serve as a reliable wearable device to monitor full-range human physiological motions, and it is expected to be applied in next-generation portable electronics, such as E-skins, smart healthcare, and the Internet of Things technology.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2022
·
IF 18.027
Yuan Cao,Tie Chang,Chao Fang,Yuanyuan Zhang,Huilan Liu,Gang Zhao
The phenomena of ice formation and growth are of great importance for climate science, regenerative medicine, cryobiology, and food science. Hence, how to control ice formation and growth remains a challenge in these fields and attracts great interest from widespread researchers. Herein, the ice regulation ability of the two-dimensional MXene Ti3C2Tx in both the cooling and thawing processes is explored. Molecularly speaking, the ice growth inhibition mechanism of Ti3C2Tx MXene is ascribed to the formation of hydrogen bonds between functional groups of −O–, −OH, and −F distributed on the surface of Ti3C2Tx and ice/water molecules, which was elucidated by the molecular dynamics simulation method. In the cooling process, Ti3C2Tx can decrease the supercooling degree and inhibit the sharp edge morphology of ice crystals. Moreover, taking advantage of the outstanding photothermal conversion property of Ti3C2Tx, rapid ice melting can be achieved, thus reducing the phenomena of devitrification and ice recrystallization. Based on the ice restriction performance of Ti3C2Tx mentioned above, Ti3C2Tx is applied for cryopreservation of stem-cell-laden hydrogel constructs. The results show that Ti3C2Tx can reduce cryodamage to stem cells induced by ice injury in both the cooling and thawing processes and finally increase the cell viability from 38.4% to 80.9%. In addition, Ti3C2Tx also shows synergetic antibacterial activity under laser irradiation, thus realizing sterile cryopreservation of stem cells. Overall, this work explores the ice inhibition performance of Ti3C2Tx, elucidates the physical mechanism, and further achieves application of Ti3C2Tx in the field of cell cryopreservation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Physics
·
2023
·
IF 11.5
Xinyu Wang,Qingbo Xu,Jingchao Wang,Peng Wang,Yanyan Zhang
Cracking of conductive coatings is a primary cause of the poor durability of conductive fabrics. To address this, an Ag/MXene colloidal solution was prepared, which was stable owing to the evenly dispersed Ag particles on the MXene sheet structure. A cotton fabric sample was then coated with Ag/MXene using a dipping method, which resulted in excellent electrical conductivity. Finally, the Ag/MXene conductive coating on the polydimethylsiloxane (PDMS)-covered fabric significantly improved the conductive durability of the fabric. The finished cotton fabric exhibited excellent conductive properties, with a surface resistance of 13.9 ± 0.3 Ω/sq. In addition, the finished cotton fabric exhibited excellent mechanical durability against bending, folding, and strain. Therefore, finished cotton fabrics with excellent electrical conductivity and durability have great potential for application in wearable textiles and flexible sensors.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Qiong Ma,Xin-Pan Cui,Wen-Hui Zhou,Dong-Xing Kou,Zheng-Ji Zhou,Yue-Na Meng,Ya-Fang Qi,Sheng-Jie Yuan,Li-Tao Han,Si-Xin Wu
Kesterite Cu2ZnSn(S,Se)4 (CZTSSe) has been considered as the most promising absorber material for inorganic thin-film solar cells. Among the three main interfaces in CZTSSe-based solar cells, the CZTSSe/Mo back interface plays an essential role in hole extraction as well as device performance. During the selenization process, the reaction between CZTSSe and Mo is one of the main reasons that lead to a large open circuit voltage (VOC) deficit, low short circuit current (Jsc), and fill factor. In this study, 2D Ti3C2-MXene was introduced as an intermediate layer to optimize the interface between the CZTSSe absorber layer and Mo back contact. Benefiting from the 2D Ti3C2-MXene intermediate layer, the reaction between CZTSSe and Mo was effectually suppressed, thus, significantly reducing the thickness of the detrimental Mo(S,Se)2 layer as well as interface recombination at the CZTSSe/Mo back interface. As a result, the power conversion efficiency of the champion device fabricated with the 2D Ti3C2-MXene intermediate layer was improved from 10.89 to 13.14% (active-area efficiency). This study demonstrates the potential use of the 2D Ti3C2-MXene intermediate layer for efficient CZTSSe solar cells and promotes a deeper understanding of the back interface in CZTSSe solar cells.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yihua Lv,Jingyan Tian,Zebin Chen,Jianhao Wang,Li-An Ma,Lei Zhang,Song Chen,Qianting Wang,Xiaoyun Ye
The development of high-performance microwave-absorbing materials (MAMs) to address electromagnetic (EM) pollution has become a focus of attention for researchers. The combination of MXene and heterogeneous MOF with complementary advantages can be designed into novel composites with promising microwave absorption (MWA) properties. In this paper, the M/CoNi/C series composites derived from MXene/CoNi-MOF were prepared by in situ hydrothermal-pyrolysis process. The effects of the molar ratio of Co 2+ /Ni 2+ and the addition amount of MXene on the morphology and EM parameters of the composites were investigated, and then the MWA performance and mechanisms of M/CoNi/C composites were analyzed. The results showed that the uniformly distributed CoNi and graphitic carbon in the M/CoNi/C composites formed a core–shell structure, and TiO 2 nanoparticles modified on the carbon lamellas originated from MXene. The minimum reflection loss (RL min ) value of the optimized M/Co 1 Ni 1 /C reaches −61.34 dB only at the thickness of 1.9 mm, and the effective absorption bandwidth (EAB) value is 5.2 GHz only at 1.7 mm. The RL min values in the thickness range of 1.5–3.0 mm are all less than −30 dB. The tunable microstructures, multiple interfacial polarizations, and dielectric-magnetic synergies optimize the impedance matching, which is conducive to achieving good broadband EM wave absorption performance. This paper provides a reference strategy for the design and construction of a high-performance MXene-based microwave absorber with controllable morphology and electromagnetic parameters.
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Huaijie Cao,Xiaoqing Ma,Tiange Wang,Wenhu Jia,Baolong Gong,Longling Guo,Pengzhan Xue,Chengrong Zhu,Xu Tian,YuLin Min,Qunjie Xu
Corrosion of metals leads to great economic losses and safety hazards. To address the corrosion problem of Al alloy in aggressive medium, two-dimensional (2D) graphene-like MXene composite coatings are proposed to enhance the corrosion resistance . Despite great progress, it still faces challenge to design high-performance MXene-based composite coating via a facile strategy because of the complex surface functionalization , orientation control, and the conductivity of MXene. Herein, a multilayer Ti 3 C 2 T x MXene/dodecyltrimethoxysilane (MXene/DTMS) coating is prepared by a layer-by-layer spraying method at ambient temperature to maximize the physical barrier of MXene nanosheets . As a result, the incorporation of MXene nanosheets can avoid the structural defects of silane coating after curing process, thereby improving the coating resistance and charge transfer resistance by ~11- and ~390-fold in comparison to Al counterpart, respectively. Beyond the traditionally complex surface functionalization and orientation control, the multilayer coating with complete coverage and strong physical barrier ability exhibits the high corrosion resistance with a impedance modulus of 3.74 × 10 7 Ω·cm 2 in 3.5 wt% NaCl solution. The designed coating shows promising applications in surface protection on Al alloy used in transmission cable, shafts, gears, and blades for offshore wind turbines .
✓ 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）